Ace 402 lec 13 max stress unsymetric
0 likes44 views
This document discusses analyzing stresses on an unsymmetrical tapered fuselage structure due to applied loads. It provides an example problem to determine stringer stresses and forces at two stations, section 0 and section 30, given loads applied at station 150. The solution strategy is outlined, which involves using the general bending stresses equation and calculating the centroid position with respect to the Z and Y axes. Steps are shown for calculating stresses at each section.
1 of 13
Recommended
Design equation for static load
Design equation for static loadVijay Kumar Jadon
油
1. The document discusses the development of design equations for machine members.
2. Maximum induced stress at any point in a loaded machine member must be less than or equal to the design stress. Maximum deformation must also be less than the maximum permissible value.
3. Developing design equations requires identifying the point of maximum stress and considering how loads are transferred between members in an assembly.Ace 402 lec 6 ultimate bending 
Ace 402 lec 6 ultimate bending Dr Mohamed Elfarran
油
The document discusses the design of aircraft fuselages. It notes that fuselages must house passengers and luggage with proper strength and light weight. Fuselages experience both distributed and concentrated loads from various sources. A circular cross-section is commonly used as it efficiently handles these loads. Fuselage structures typically consist of a thin-walled tube with transverse frames, stringers, and cutouts. The document provides an example problem calculating the ultimate bending strength of a circular fuselage cross-section made of aluminum with stringers of different sizes. It considers linear and nonlinear stress distributions to determine the maximum moment the fuselage can withstand before failure.Ace 402 Airframe Design and Construction lec 8
Ace 402 Airframe Design and Construction lec 8Dr Mohamed Elfarran
油
1. The document describes the typical wing structure arrangement and considerations for designing the wing structure of an aircraft. It includes two common arrangements: the integral type with internal webs and the distributed flange type with stringers attached to the skin.
2. An example problem is presented to analyze the stresses on a wing section subjected to bending. The solution involves calculating the effective areas and moments of inertia of the different components to determine the stress distribution and margin of safety.
3. Additional sections discuss analyzing the stresses on a tapered wing, including examples of the stringer arrangements and effectiveness for the upper and lower stringers of a wing section.Simple machines
Simple machinesRosmijames1
油
Machines are tools that use energy to perform tasks. Simple machines include levers, which rotate around a fixed point called a fulcrum. Levers can be classified as first, second, or third order depending on the position of the load, effort, and fulcrum. The mechanical advantage of a lever depends on the relative distances of the load and effort from the fulcrum, with second order levers providing the greatest mechanical advantage.Ace 402 Airframe Design and Construction lec 10
Ace 402 Airframe Design and Construction lec 10Dr Mohamed Elfarran
油
Shear lag results from sheet panel shear stresses that cause some stringers to resist fewer axial loads than calculated using beam theory. Shear lag is significant for cutouts, abrupt changes in area, and large changes in external loads. Shear lag effectiveness (Ksl) represents the shear lag effect and can be measured from load curves or calculated as the ratio of effective to actual area. Shear lag due to abrupt area changes is also calculated using Ksl.Torsion
TorsionBHARAT BANSAL
油
Torsion refers to the twisting of a shaft when a torque or twisting moment acts on it. The angle of twist is defined as the angle through which the shaft's cross section rotates due to the torque. Torque causes rotation, while torsion is the effect produced by torque. Torsion occurs in a shaft when it is subjected to two equal and opposite twisting moments, known as pure torsion. The torsion equation relates the angle of twist in a shaft to the applied torque based on certain assumptions about the shaft's material properties and dimensions. Power can be transmitted through a rotating shaft by applying torque that causes torsion.Ace 402 Airframe Design and Construction lec 12
Ace 402 Airframe Design and Construction lec 12Dr Mohamed Elfarran
油
The document discusses analyzing the stresses and deflections in aerospace shell beam structures like aircraft wings and space habitats. It presents an approach to idealize the cross-section into parts that carry extensional stress from bending and axial loads versus parts that carry shear stress from shear loads and torques. Joint equilibrium equations are developed and the problem is broken into "pure shear" and "pure torsion" cases that are then summed using superposition. Deflections are also analyzed by summing contributions from bending, shearing, and torsion.Ace 402 Airframe Design and Construction lec 9
Ace 402 Airframe Design and Construction lec 9Dr Mohamed Elfarran
油
This document discusses shear lag, which occurs when sheet panels experience shear stresses that cause some stringers to resist less axial load than calculated using beam theory. Shear lag is significant for structures with cutouts, abrupt changes in area, or large changes in external loads. The effectiveness of stringers in resisting load decreases within a triangular region near a cutout. Shear lag can be accounted for using an effectiveness factor that is calculated based on the ratio of effective to actual cross-sectional areas.Ace 402 lec 4 buckling 
Ace 402 lec 4 buckling Dr Mohamed Elfarran
油
- The fuselage skin consists of curved sheet panels that can buckle if no stiffeners are present. Stiffener elements are needed to calculate and compare the buckling loads to the aircraft's ultimate loads.
- Buckling of aircraft structures like fuselage skins must be analyzed and prevented. Curved sheets and cylinders can buckle under compression, bending, shear, torsion and combined loads. Internal pressure increases the buckling strength.
- Design examples are provided to calculate buckling loads of circular cylinders and curved-stiffened sheets under various loading conditions and determine if panels would buckle. Buckling analysis ensures the structure can withstand required loads.Lec8 buckling v2_1
Lec8 buckling v2_1Mahdi Damghani
油
Buckling of aerospace structures at university of the west of england by Dr. Mahdi Damghani and Dr. Christopher HarrisonAce 402 lec 8 max stress
Ace 402 lec 8 max stressDr Mohamed Elfarran
油
This document discusses calculating the ultimate bending strength of a fuselage structure. It provides an example problem of determining stresses in the stringers and skin of a fuselage cross-section due to an applied bending moment. The solution involves iteratively calculating the neutral axis position and effective area through trial and error, starting with an initial assumption that all materials are effective in tension. The results of the first trial are then used to refine the model for a second trial. Comparing the results shows an error of 14% in the neutral axis position between the first and second trials.Shaft subjected to bending moment only
Shaft subjected to bending moment onlyabdul ahad noohani
油
1) The document discusses the design of shafts subjected to different loading conditions including bending, torsion, combined bending and torsion, fluctuating loads, and axial loads.
2) Formulas are provided to calculate the equivalent bending moment and equivalent twisting moment for shafts under various loading conditions.
3) Examples are presented to demonstrate how to use the formulas and determine the necessary shaft diameter based on allowable stresses.Shaft subjected to bending moment only (2)
Shaft subjected to bending moment only (2)abdul ahad noohani
油
1) The document discusses the design of shafts subjected to different loading conditions including bending, torsion, combined bending and torsion, fluctuating loads, and axial loads.
2) Formulas are provided to calculate the equivalent bending moment and equivalent twisting moment for shafts under various loading conditions.
3) Examples are presented to demonstrate how to use the formulas and determine the necessary shaft diameter based on allowable stresses.DESIGN OF SOLID TRANSMISSION SHAFT
DESIGN OF SOLID TRANSMISSION SHAFTAnimesh Bhattacharya
油
The document discusses transmission shafts and their design. It defines a transmission shaft as a rotating element that supports transmission elements like gears and transmits power. Stepped shafts are commonly used, with maximum diameter in the middle and minimum at the ends. Shaft material is typically carbon steel. Design considers strength based on stresses from loads, torsional rigidity based on permissible twist, and ASME code factors for shock/fatigue. Equivalent moment concepts are introduced for combined loading conditions.Mpe 209 lec 11 springs 
Mpe 209 lec 11 springs Dr Mohamed Elfarran
油
This document provides an overview of helical spring design and analysis. It discusses stresses in helical springs, deflection calculations, compression spring types, stability, materials selection, static design considerations, critical frequencies, and examples. The chapters cover key topics like curvature effects, stresses from torsion and shear, deflection-force relationships, buckling analysis, material properties, recommended design ranges, and the wave equation for vibrational frequency.MEP 209: Design of Machine elements LEC 11
MEP 209: Design of Machine elements LEC 11Dr Mohamed Elfarran
油
This document provides an overview of spring design and analysis. It discusses various types of springs including compression springs, extension springs, and torsion springs. It covers topics such as stresses in springs, deflection calculations, stability, materials selection, design considerations, fatigue loading, and critical frequencies. The document is presented in a series of slides intended for a lecture on spring design.UNIT 4 Energy storing elements and Engine components.pptx
UNIT 4 Energy storing elements and Engine components.pptxCharunnath S V
油
This document discusses various energy storing elements and engine components. It describes springs, including helical springs, leaf springs, Belleville springs, and concentric springs. It discusses the material, design, and stresses in helical springs. It also covers flywheels, connecting rods, and crankshafts as key engine components that help store and transmit energy within an engine.Stress life approach
Stress life approachRudresh M
油
The document discusses steps involved in developing S-N curves to characterize fatigue life of materials. It describes testing various stress levels on specimen groups and recording the cycle count at failure. The data is then plotted on a stress vs log life graph to develop the S-N curve. It also discusses factors that influence fatigue behavior like microstructure, size effects, surface finish and mean stress effects. Different models used to represent S-N curves in approximations are presented, including the tri-slope and Basquin models. Equations for determining allowable stress levels for a given fatigue life are also provided.
8 principal stresses
8 principal stressesMohamed Yaser
油
This document discusses determining principle stresses from combined loadings on structural members. It introduces the concepts of principle stresses and maximum shear stress. Sample problems demonstrate calculating internal forces, normal stresses, shear stresses, and using these to find principle stresses and orientation of principle planes. The document emphasizes that superposition of stresses from different load components can be used if applicability conditions are met.2nd codition of equilibrium
2nd codition of equilibriumNestor Enriquez
油
The document discusses rotational equilibrium as the second condition of equilibrium for objects under the influence of forces. It defines key terms like moment arm, torque, and explains that for an object to be in rotational equilibrium, the sum of all torques about any axis must be zero. It provides examples calculating torque using the equation torque = force x moment arm, and illustrates applying the first and second conditions of equilibrium to solve for unknown forces on an object.
Design equation for static load
Design equation for static loadVijay Kumar Jadon
油
1. The document discusses developing design equations for machine members by identifying points of maximum induced stress and ensuring stress does not exceed design stress.
2. Methods are presented for determining maximum stress, required cross-section, and maximum deformation of loaded members.
3. Several cases are described for developing design equations, including needing support reactions, load effects at points of interest, and understanding load transfer between assembly members.Fatigue testing 
Fatigue testing Ahmed Abdullah
油
Fatigue is the weakening of a material caused by fluctuating stresses that occurs even at stress levels below the material's tensile strength. It happens in three stages: crack initiation, crack propagation, and final fracture. Fatigue life refers to the total number of cycles a material can withstand before failure. Fatigue strength is the stress level that causes failure after a given number of cycles. Endurance limit is the maximum stress that does not cause failure even after an infinite number of cycles. Fatigue testing determines the fatigue life and failure location of a specimen under repeated stressing to help prevent mechanical failures.Project for Design of a Signboard Column
Project for Design of a Signboard ColumnMANISH JANGIR
油
Our project report investigates the characteristics or more specifically design of a column on which a signboard is to be installed at the gate of IIT ROORKEE. It is a detailed design report for the column with preliminary calculations, materials selection, solid geometry, stress analysis and cost estimation. In order to design the column we have considered drag force of air on the signboard, weight of the signboard and different materials for making the most optimum design of the column such that it supports the weight of the signboard and the drag force on the signboard due to air. Length of the column (5m), dimensions of the signboard (4m*2m*0.05m) and dead load of the assembly (50kg) is given. For designing the column we have used the data given to calculate the forces on the column. Also, we have used software tools like SOLIDWORKS 2014 EDITION for designing the pole and ANSYS 2015 EDITION for the analysis of the column after application of the calculated forces. Finally we have summarized the conclusions of analysis by using ANSYS which includes the material to be used and the design specifications of the pole.
Friction devices-notes-tom-11
Friction devices-notes-tom-11md neshat
油
This document discusses various types of brakes and dynamometers. It provides definitions of a brake, dynamometer, self-energizing brake, and self-locking brake. It describes absorption and transmission dynamometers. Prony brake, belt transmission, and torsion dynamometers are explained. Expressions are derived for braking torque in shoe brakes, band brakes, and drum brakes. Distinctions between simple and differential band brakes are outlined.Unit 2 Shafts and Coupling.pptx
Unit 2 Shafts and Coupling.pptxCharunnath S V
油
1. The document describes a horizontal shaft supported by bearings at each end that carries two gears.
2. Gears C and D are located 250mm and 400mm from their respective bearings and have pitch diameters of 600mm and 200mm.
3. The shaft transmits 20kW of power at 120rpm, delivered at gear C and taken out at gear D, with vertical tooth pressures on each gear.
4. The question asks to determine the shaft diameter if the working stresses are 100MPa in tension and 56MPa in shear.
SCRUM Day 1 Rev03.pdf
SCRUM Day 1 Rev03.pdfDr Mohamed Elfarran
油
The document discusses project management methodologies, specifically comparing traditional waterfall and agile approaches. It provides details on waterfall, including its sequential phases of requirements, design, implementation, and test. Agile methodologies are described as iterative with short development cycles. The Scrum framework is then explained in depth, covering its roles of Product Owner, Scrum Master, and team, along with artifacts like the Product Backlog, Sprint Backlog, and burndown chart. Key Scrum meetings like the Sprint Planning, daily standup, and Sprint Review meetings are also outlined.Project Management Day 5 Risk R02.pdf
Project Management Day 5 Risk R02.pdfDr Mohamed Elfarran
油
The document discusses project risk management over 7 days. Day 5 focuses on project risk management and includes discussions of identifying risks, qualitative and quantitative risk analysis, and planning risk responses. Key topics covered are the importance of risk management, types of risks, tools for risk identification like brainstorming, risk breakdown structures, and risk registers to document risks.More Related Content
Similar to Ace 402 lec 13 max stress unsymetric (20)
Ace 402 lec 4 buckling
Ace 402 lec 4 buckling Dr Mohamed Elfarran
油
- The fuselage skin consists of curved sheet panels that can buckle if no stiffeners are present. Stiffener elements are needed to calculate and compare the buckling loads to the aircraft's ultimate loads.
- Buckling of aircraft structures like fuselage skins must be analyzed and prevented. Curved sheets and cylinders can buckle under compression, bending, shear, torsion and combined loads. Internal pressure increases the buckling strength.
- Design examples are provided to calculate buckling loads of circular cylinders and curved-stiffened sheets under various loading conditions and determine if panels would buckle. Buckling analysis ensures the structure can withstand required loads.Lec8 buckling v2_1
Lec8 buckling v2_1Mahdi Damghani
油
Buckling of aerospace structures at university of the west of england by Dr. Mahdi Damghani and Dr. Christopher HarrisonAce 402 lec 8 max stress
Ace 402 lec 8 max stressDr Mohamed Elfarran
油
This document discusses calculating the ultimate bending strength of a fuselage structure. It provides an example problem of determining stresses in the stringers and skin of a fuselage cross-section due to an applied bending moment. The solution involves iteratively calculating the neutral axis position and effective area through trial and error, starting with an initial assumption that all materials are effective in tension. The results of the first trial are then used to refine the model for a second trial. Comparing the results shows an error of 14% in the neutral axis position between the first and second trials.Shaft subjected to bending moment only
Shaft subjected to bending moment onlyabdul ahad noohani
油
1) The document discusses the design of shafts subjected to different loading conditions including bending, torsion, combined bending and torsion, fluctuating loads, and axial loads.
2) Formulas are provided to calculate the equivalent bending moment and equivalent twisting moment for shafts under various loading conditions.
3) Examples are presented to demonstrate how to use the formulas and determine the necessary shaft diameter based on allowable stresses.Shaft subjected to bending moment only (2)
Shaft subjected to bending moment only (2)abdul ahad noohani
油
1) The document discusses the design of shafts subjected to different loading conditions including bending, torsion, combined bending and torsion, fluctuating loads, and axial loads.
2) Formulas are provided to calculate the equivalent bending moment and equivalent twisting moment for shafts under various loading conditions.
3) Examples are presented to demonstrate how to use the formulas and determine the necessary shaft diameter based on allowable stresses.DESIGN OF SOLID TRANSMISSION SHAFT
DESIGN OF SOLID TRANSMISSION SHAFTAnimesh Bhattacharya
油
The document discusses transmission shafts and their design. It defines a transmission shaft as a rotating element that supports transmission elements like gears and transmits power. Stepped shafts are commonly used, with maximum diameter in the middle and minimum at the ends. Shaft material is typically carbon steel. Design considers strength based on stresses from loads, torsional rigidity based on permissible twist, and ASME code factors for shock/fatigue. Equivalent moment concepts are introduced for combined loading conditions.Mpe 209 lec 11 springs
Mpe 209 lec 11 springs Dr Mohamed Elfarran
油
This document provides an overview of helical spring design and analysis. It discusses stresses in helical springs, deflection calculations, compression spring types, stability, materials selection, static design considerations, critical frequencies, and examples. The chapters cover key topics like curvature effects, stresses from torsion and shear, deflection-force relationships, buckling analysis, material properties, recommended design ranges, and the wave equation for vibrational frequency.MEP 209: Design of Machine elements LEC 11
MEP 209: Design of Machine elements LEC 11Dr Mohamed Elfarran
油
This document provides an overview of spring design and analysis. It discusses various types of springs including compression springs, extension springs, and torsion springs. It covers topics such as stresses in springs, deflection calculations, stability, materials selection, design considerations, fatigue loading, and critical frequencies. The document is presented in a series of slides intended for a lecture on spring design.UNIT 4 Energy storing elements and Engine components.pptx
UNIT 4 Energy storing elements and Engine components.pptxCharunnath S V
油
This document discusses various energy storing elements and engine components. It describes springs, including helical springs, leaf springs, Belleville springs, and concentric springs. It discusses the material, design, and stresses in helical springs. It also covers flywheels, connecting rods, and crankshafts as key engine components that help store and transmit energy within an engine.Stress life approach
Stress life approachRudresh M
油
The document discusses steps involved in developing S-N curves to characterize fatigue life of materials. It describes testing various stress levels on specimen groups and recording the cycle count at failure. The data is then plotted on a stress vs log life graph to develop the S-N curve. It also discusses factors that influence fatigue behavior like microstructure, size effects, surface finish and mean stress effects. Different models used to represent S-N curves in approximations are presented, including the tri-slope and Basquin models. Equations for determining allowable stress levels for a given fatigue life are also provided.8 principal stresses
8 principal stressesMohamed Yaser
油
This document discusses determining principle stresses from combined loadings on structural members. It introduces the concepts of principle stresses and maximum shear stress. Sample problems demonstrate calculating internal forces, normal stresses, shear stresses, and using these to find principle stresses and orientation of principle planes. The document emphasizes that superposition of stresses from different load components can be used if applicability conditions are met.2nd codition of equilibrium
2nd codition of equilibriumNestor Enriquez
油
The document discusses rotational equilibrium as the second condition of equilibrium for objects under the influence of forces. It defines key terms like moment arm, torque, and explains that for an object to be in rotational equilibrium, the sum of all torques about any axis must be zero. It provides examples calculating torque using the equation torque = force x moment arm, and illustrates applying the first and second conditions of equilibrium to solve for unknown forces on an object.Design equation for static load
Design equation for static loadVijay Kumar Jadon
油
1. The document discusses developing design equations for machine members by identifying points of maximum induced stress and ensuring stress does not exceed design stress.
2. Methods are presented for determining maximum stress, required cross-section, and maximum deformation of loaded members.
3. Several cases are described for developing design equations, including needing support reactions, load effects at points of interest, and understanding load transfer between assembly members.Fatigue testing
Fatigue testing Ahmed Abdullah
油
Fatigue is the weakening of a material caused by fluctuating stresses that occurs even at stress levels below the material's tensile strength. It happens in three stages: crack initiation, crack propagation, and final fracture. Fatigue life refers to the total number of cycles a material can withstand before failure. Fatigue strength is the stress level that causes failure after a given number of cycles. Endurance limit is the maximum stress that does not cause failure even after an infinite number of cycles. Fatigue testing determines the fatigue life and failure location of a specimen under repeated stressing to help prevent mechanical failures.Project for Design of a Signboard Column
Project for Design of a Signboard ColumnMANISH JANGIR
油
Our project report investigates the characteristics or more specifically design of a column on which a signboard is to be installed at the gate of IIT ROORKEE. It is a detailed design report for the column with preliminary calculations, materials selection, solid geometry, stress analysis and cost estimation. In order to design the column we have considered drag force of air on the signboard, weight of the signboard and different materials for making the most optimum design of the column such that it supports the weight of the signboard and the drag force on the signboard due to air. Length of the column (5m), dimensions of the signboard (4m*2m*0.05m) and dead load of the assembly (50kg) is given. For designing the column we have used the data given to calculate the forces on the column. Also, we have used software tools like SOLIDWORKS 2014 EDITION for designing the pole and ANSYS 2015 EDITION for the analysis of the column after application of the calculated forces. Finally we have summarized the conclusions of analysis by using ANSYS which includes the material to be used and the design specifications of the pole.
Friction devices-notes-tom-11
Friction devices-notes-tom-11md neshat
油
This document discusses various types of brakes and dynamometers. It provides definitions of a brake, dynamometer, self-energizing brake, and self-locking brake. It describes absorption and transmission dynamometers. Prony brake, belt transmission, and torsion dynamometers are explained. Expressions are derived for braking torque in shoe brakes, band brakes, and drum brakes. Distinctions between simple and differential band brakes are outlined.Unit 2 Shafts and Coupling.pptx
Unit 2 Shafts and Coupling.pptxCharunnath S V
油
1. The document describes a horizontal shaft supported by bearings at each end that carries two gears.
2. Gears C and D are located 250mm and 400mm from their respective bearings and have pitch diameters of 600mm and 200mm.
3. The shaft transmits 20kW of power at 120rpm, delivered at gear C and taken out at gear D, with vertical tooth pressures on each gear.
4. The question asks to determine the shaft diameter if the working stresses are 100MPa in tension and 56MPa in shear.More from Dr Mohamed Elfarran (20)
SCRUM Day 1 Rev03.pdf
SCRUM Day 1 Rev03.pdfDr Mohamed Elfarran
油
The document discusses project management methodologies, specifically comparing traditional waterfall and agile approaches. It provides details on waterfall, including its sequential phases of requirements, design, implementation, and test. Agile methodologies are described as iterative with short development cycles. The Scrum framework is then explained in depth, covering its roles of Product Owner, Scrum Master, and team, along with artifacts like the Product Backlog, Sprint Backlog, and burndown chart. Key Scrum meetings like the Sprint Planning, daily standup, and Sprint Review meetings are also outlined.Project Management Day 5 Risk R02.pdf
Project Management Day 5 Risk R02.pdfDr Mohamed Elfarran
油
The document discusses project risk management over 7 days. Day 5 focuses on project risk management and includes discussions of identifying risks, qualitative and quantitative risk analysis, and planning risk responses. Key topics covered are the importance of risk management, types of risks, tools for risk identification like brainstorming, risk breakdown structures, and risk registers to document risks.Project Management Day 4 Cost R02.pdf
Project Management Day 4 Cost R02.pdfDr Mohamed Elfarran
油
The document provides an outline for a project management course. It includes details on the topics that will be covered each day, including project integration management, scope management, schedule management, cost management, risk management, and Scrum. The focus of the specific section summarized is on project cost management. It defines key processes involved in project cost management like planning, estimating, budgeting, controlling, and managing costs. Formulas for earned value management are also provided to measure project performance and forecast estimates.Day 3 Schedule R02.pdf
Day 3 Schedule R02.pdfDr Mohamed Elfarran
油
The document discusses project schedule management processes including plan schedule management, define activities, sequence activities, estimate activity resources, and estimate activity durations. It provides details on each process, including inputs, tools and techniques, and outputs. The key steps are decomposing work into activities, defining relationships between activities, estimating resource needs and duration of each activity, and developing a project schedule network diagram.Day 1 Framework R03.pdf
Day 1 Framework R03.pdfDr Mohamed Elfarran
油
The document outlines a 7-day project management training course. Day 1 covers an introduction to project integration management. Later days cover additional topics like scope, schedule, cost, risk management and Scrum. The course aims to help participants understand key project management principles, processes, knowledge areas and the role of the project manager. It emphasizes the importance of integrating all project efforts, balancing scope, time and cost constraints, and addressing stakeholder needs.Day 2 Scope R02.pdf
Day 2 Scope R02.pdfDr Mohamed Elfarran
油
The document outlines the course schedule for a 7-day project management training. Day 2 focuses on project scope management. It defines key scope management terms and processes. The presentation covers planning scope management, collecting requirements, defining the scope statement, creating the work breakdown structure (WBS), and validating scope. Tools for collecting requirements and creating the WBS are also discussed.how to write a business plan
how to write a business planDr Mohamed Elfarran
油
This document provides guidance on writing a business plan. It explains that a business plan clarifies the feasibility of a business idea by evaluating the potential market, management team, and profitability. It also communicates the idea to investors and provides the basis for securing financing. The document outlines the typical sections of a business plan, including executive summary, business description, products/services, sales and marketing plan, operations plan, and financial projections. It emphasizes that a well-written business plan is important for gaining investor confidence and improving the chances of business success.Industry 4.0 and Cyber physical systems Intro
Industry 4.0 and Cyber physical systems IntroDr Mohamed Elfarran
油
This document appears to be a presentation about cyber-physical systems and Industry 4.0. It includes definitions of cyber-physical systems and Industry 4.0, examples of companies implementing Industry 4.0 solutions, discussions of the Internet of Things, impacts of new technologies on the economy, business, society and individuals, and slides on various related topics without titles like applications, history, and use cases. The presentation touches on many aspects of emerging digital technologies and their integration with physical systems and processes.Ace 402 lec 12 fueslage shear flow
Ace 402 lec 12 fueslage shear flowDr Mohamed Elfarran
油
This document discusses shear flow in aircraft structural design. It covers governing equations for shear flow calculations, case studies of shear flow in aircraft fuselages, and methods for calculating moments of inertia and shear flow. The document is a lecture on shear flow given by Dr. Mohamed Elfarran of Cairo University's Aerospace Engineering Department.Ace 402 lec 7 unsymmetrical 
Ace 402 lec 7 unsymmetrical Dr Mohamed Elfarran
油
The document discusses analyzing the ultimate bending strength of an aircraft fuselage structure. It provides an example problem to calculate the ultimate bending moment of a fuselage cross section considering shear lag and inter-rivet buckling effects. The solution involves determining the effective area of structural elements through an iterative process accounting for stresses, strains, and shear lag factors. The example provides details of the fuselage geometry, materials, and step-by-step working to arrive at the ultimate bending moment and stringer forces.Ace 402 lec 12 fueslage shear flow2
Ace 402 lec 12 fueslage shear flow2Dr Mohamed Elfarran
油
The document discusses three cases of aircraft structural loading and the resulting stresses: 1) Pressurization of the fuselage shell, which induces longitudinal and circumferential stresses that depend on the material properties and geometry, 2) Torsional loading of the fuselage shell, which causes shear stresses proportional to the applied torque and cross-sectional properties, and 3) Bending loads on wing spars, which are resisted by shear stresses in the spar webs and normal stresses in the spar caps that depend on the bending moment and section properties.Ace 402 lec 3 bending
Ace 402 lec 3 bendingDr Mohamed Elfarran
油
This document discusses material properties and bending stresses. It defines key terms like modulus of elasticity, Poisson's ratio, yield stress, and ultimate tensile stress. It explains that plane sections remain plane after bending but rotate, and that the neutral axis experiences no deformation or stress. The location of the neutral axis depends on the material properties and loading conditions. Equations are provided to calculate bending stresses based on the neutral axis location and applied moment. An example problem calculates bending stresses at different points on an airplanes wing. The document also notes that for very high loads above the elastic range, stresses become nonlinear and the neutral axis must be determined through trial and error.Ace 402 lec 1&2
Ace 402 lec 1&2Dr Mohamed Elfarran
油
The document outlines a lecture on fuselage structural design. It discusses iterative methods for calculating effective width and radius of gyration of thin-walled structures. It also covers loads acting on the fuselage, fuselage structure components like stringers and frames, and examples of analyzing stresses in circular fuselage sections. The document concludes by mentioning that stress analysis of wings will be covered next.Ace 402 lec 5 effective
Ace 402 lec 5 effectiveDr Mohamed Elfarran
油
This document discusses effective sheet width and inter-rivet buckling in aerospace structures. It explains that stringers stiffen wing and fuselage skins, and skins provide stiffness to stringers even when buckling. An effective width calculation accounts for this effect. The document also describes how inter-rivet buckling can occur if rivet spacing is too long, and provides equations to calculate the effective rivet spacing to prevent this issue.Mpe 209 lec 9 Pressized Vessels 
Mpe 209 lec 9 Pressized Vessels Dr Mohamed Elfarran
油
1. The document discusses stresses in thin-walled and thick-walled cylinders. For thin-walled cylinders, the stress is assumed to be uniform throughout the wall. For thick-walled cylinders, the stresses depend on the radius and include circumferential (hoop), radial, and longitudinal stresses.
2. Internally pressurized thick-walled cylinders experience maximum hoop stress and compressive radial stress at the inner surface. The hoop stress decreases and radial stress increases towards zero at the outer surface. Longitudinal stress is uniform across the wall.
3. Externally pressurized thick-walled cylinders experience minimum hoop stress and compressive radial stress at the outer surfaceMpe 209 lec gear Design
Mpe 209 lec gear DesignDr Mohamed Elfarran
油
This document provides an overview of various gear types and gear terminology. It discusses spur gears, helical gears, bevel gears, worm gears, and compares their basic configurations. Key gear concepts covered include involute tooth profiles, conjugate action, pressure angle, pitch circle, circular pitch, diametral pitch, addendum, dedendum, interference, contact ratio, and gear forming/cutting methods. Standard tooth systems and proportions are also presented in tables.Mpe 209 lec 10 screw fastners
Mpe 209 lec 10 screw fastnersDr Mohamed Elfarran
油
This document discusses threaded fasteners and screw threads. It defines common screw thread parameters like pitch, major diameter, and thread angle. It describes metric and unified screw thread standards. It also discusses power screws, different types of threaded fasteners, and how to select the proper fastener for an application based on required load and functional parameters.Ace 402 Airframe Design and Construction lec 13
Ace 402 Airframe Design and Construction lec 13Dr Mohamed Elfarran
油
The document discusses shear flow analysis of cantilevered wings. It presents equilibrium equations for 1-cell and 2-cell cantilevered wing models. Tables show shear flow analysis results for a 2-cell cantilevered wing with properties such as shear, bending moment, and torque calculated at each cell. Shear correction factors are also discussed.MEP 209: Design of Machine elements LEC 3
MEP 209: Design of Machine elements LEC 3Dr Mohamed Elfarran
油
This document outlines material properties testing methods and concepts. It discusses tensile testing to determine material strengths, stress-strain diagrams, elastic modulus, resilience, toughness, statistical variation in properties, effects of temperature and cold working. It also summarizes material classes including metals, plastics, composites and provides examples of common materials like steels, aluminum, titanium, polymers. Key material properties like strengths, moduli and factors affecting properties are defined.MEP 209: Design of Machine elements LEC 5
MEP 209: Design of Machine elements LEC 5Dr Mohamed Elfarran
油
Fatigue Introduction Fatigue Life Methods
Stress-based Approach Strain-based Approach Linear Elastic Fracture Mechanics
Endurance Limit and Fatigue Strength Characterizing Fluctuating Stresses Fatigue Failure Criteria for Fluctuating Stresses Combination of Loading ModesRecently uploaded (20)
Von karman Equation full derivation .pdf
Von karman Equation full derivation .pdfEr. Gurmeet Singh
油
Von karman Equation full derivation
By Er. GURMEET SINGH
G.C.E.T JAMMU
Contact: gurmeet.b.tech@gmail.com
M.tech Transportation Engineering ESIT135 Problem Solving Using Python Notes of Unit-1 and Unit-2
ESIT135 Problem Solving Using Python Notes of Unit-1 and Unit-2prasadmutkule1
油
ESIT135 Problem Solving Using Python Notes of Unit-1 and Unit-2Failover System in Cloud Computing System
Failover System in Cloud Computing SystemHitesh Mohapatra
油
Uses established clustering technologies for redundancy
Boosts availability and reliability of IT resources
Automatically transitions to standby instances when active resources become unavailable
Protects mission-critical software and reusable services from single points of failure
Can cover multiple geographical areas
Hosts redundant implementations of the same IT resource at each location
Relies on resource replication for monitoring defects and unavailability conditions惠悋惡 悋惠悋惶 悋悋愆悋悧 愆悛惠 悋悽惘愕悋悸
惠悋惡 悋惠悋惶 悋悋愆悋悧 愆悛惠 悋悽惘愕悋悸o774656624
油
-Zuf辰lligurl zu
peut 辿lus silly mais les mes ishaute quils le aurais sans Les 辿tablis qui
des Louis de belle accueillis sell puss p竪re peut olds sects it's all辿tells peutall asplait suite
Il -12 ) pas cause subit lequel euros le en as d辿taill辿 de till
PILONI balo -2
ispeulit Mais anglais appareils guilt gens ils en anglais glory pile le vous pr竪s
... still que y pais vida Los play qu辿tej坦n Less via Leal su abuelos l叩stimaall) isa las
des audit elleguilt disons s'il souhait sous sirs vous lucius atoutes pouvait lets pas
il taille glacis Lieu daily qui les jeutaille pas bill Luc jean 辿cumait il taille Lacis just -Zuf辰lligurl zu
peut 辿lus silly mais les mes ishaute quils le aurais sans Les 辿tablis qui
des Louis de belle accueillis sell puss p竪re peut olds sects it's all辿tells peutall asplait suite
Il -12 ) pas cause subit lequel euros le en as d辿taill辿 de till
PILONI balo -2
ispeulit Mais anglais appareils guilt gens ils en anglais glory pile le vous pr竪s
... still que y pais vida Los play qu辿tej坦n Less via Leal su abuelos l叩stimaall) isa las
des audit elleguilt disons s'il souhait sous sirs vous lucius atoutes pouvait lets pas
il taille glacis Lieu daily qui les jeutaille pas bill Luc jean 辿cumait il taille Lacis just-Zuf辰lligurl zu
peut 辿lus silly mais les mes ishaute quils le aurais sans Les 辿tablis qui
des Louis de belle accueillis sell puss p竪re peut olds sects it's all辿tells peutall asplait suite
Il -12 ) pas cause subit lequel euros le en as d辿taill辿 de till
PILONI balo -2
ispeulit Mais anglais appareils guilt gens ils en anglais glory pile le vous pr竪s
... still que y pais vida Los play qu辿tej坦n Less via Leal su abuelos l叩stimaall) isa las
des audit elleguilt disons s'il souhait sous sirs vous lucius atoutes pouvait lets pas
il taille glacis Lieu daily qui les jeutaille pas bill Luc jean 辿cumait il taille Lacis just -Zuf辰lligurl zu
peut 辿lus silly mais les mes ishaute quils le aurais sans Les 辿tablis qui
des Louis de belle accueillis sell puss p竪re peut olds sects it's all辿tells peutall asplait suite
Il -12 ) pas cause subit lequel euros le en as d辿taill辿 de till
PILONI balo -2
ispeulit Mais anglais appareils guilt gens ils en anglais glory pile le vous pr竪s
... still que y pais vida Los play qu辿tej坦n Less via Leal su abuelos l叩stimaall) isa las
des audit elleguilt disons s'il souhait sous sirs vous lucius atoutes pouvait lets pas
il taille glacis Lieu daily qui les jeutaille pas bill Luc jean 辿cumait il taille Lacis just-Zuf辰lligurl zu
peut 辿lus silly mais les mes ishaute quils le aurais sans Les 辿tablis qui
des Louis de belle accueillis sell puss p竪re peut olds sects it's all辿tells peutall asplait suite
Il -12 ) pas cause subit lequel euros le en as d辿taill辿 de till
PILONI balo -2
ispeulit Mais anglais appareils guilt gens ils en anglais glory pile le vous pr竪s
... still que y pais vida Los play qu辿tej坦n Less via Leal su abuelos l叩stimaall) isa las
des audit elleguilt disons s'il souhait sous sirs vous lucius atoutes pouvait letsAI-Powered Power Converter Design Workflow.pdf
AI-Powered Power Converter Design Workflow.pdfAleksandr Terlo
油
Blending human expertise with AI-driven optimization for efficient power converter design.AO Star Algorithm in Artificial Intellligence
AO Star Algorithm in Artificial Intellligencevipulkondekar
油
AO Star Algorithm in Artificial IntellligenceMachine Vision lecture notes for Unit 3.ppt
Machine Vision lecture notes for Unit 3.pptSATHISHKUMARSD1
油
This is the document related to machine vision subject for final year mechatronics students.ESIT135 Problem Solving Using Python Notes of Unit-2 and Unit-3
ESIT135 Problem Solving Using Python Notes of Unit-2 and Unit-3prasadmutkule1
油
ESIT135 Problem Solving Using Python Notes of Unit-2 and Unit-3IoT-based-Electrical-Motor-Fault-Detection-System.pptx
IoT-based-Electrical-Motor-Fault-Detection-System.pptxatharvapardeshi03
油
IoT-based-Electrical-Motor-Fault-Detection-System.pptx
AIR FILTER system in internal combustion engine system.ppt
AIR FILTER system in internal combustion engine system.pptthisisparthipan1
油
air filter system in ic engine Improving Surgical Robot Performance Through Seal Design.pdf
Improving Surgical Robot Performance Through Seal Design.pdfBSEmarketing
油
Ever wonder how something as "simple" as a seal can impact surgical robot accuracy and reliability? Take quick a spin through this informative deck today, and use what you've learned to build a better robot tomorrow.
INVESTIGATION OF PUEA IN COGNITIVE RADIO NETWORKS USING ENERGY DETECTION IN D...
INVESTIGATION OF PUEA IN COGNITIVE RADIO NETWORKS USING ENERGY DETECTION IN D...csijjournal
油
Primary User Emulation Attack (PUEA) is one of the major threats to the spectrum sensing in cognitive
radio networks. This paper studies the PUEA using energy detection that is based on the energy of the
received signal. It discusses the impact of increasing the number of attackers on the performance of
secondary user. Moreover, studying how the malicious user can emulate the Primary User (PU) signal is
made. This is the first analytical method to study PUEA under a different number of attackers. The
detection of the PUEA increases with increasing the number of attackers and decreases when changing the
channel from lognormal to Rayleigh fading.Renewable-Energy-Powering-Mozambiques-Economic-Growth.pptx
Renewable-Energy-Powering-Mozambiques-Economic-Growth.pptxRofino Licuco
油
Mozambique, a country with vast natural resources and immense potential, nevertheless faces several economic challenges, including high unemployment, limited access to energy, and an unstable power supply. Underdeveloped infrastructure has slowed the growth of industry and hampered peoples entrepreneurial ambitions, leaving many regions in the darkliterally and figuratively.
https://www.rofinolicuco.net/blog/how-renewable-energy-can-help-mozambique-grow-its-economyTASK-DECOMPOSITION BASED ANOMALY DETECTION OF MASSIVE AND HIGH-VOLATILITY SES...
TASK-DECOMPOSITION BASED ANOMALY DETECTION OF MASSIVE AND HIGH-VOLATILITY SES...samueljackson3773
油
The Science Information Network (SINET) is a Japanese academic backbone network for more than 800
universities and research institutions. The characteristic of SINET traffic is that it is enormous and highly
variable
Design of cannal by Kennedy Theory full problem solved
Design of cannal by Kennedy Theory full problem solvedEr. Gurmeet Singh
油
Design of cannal by Kennedy Theory
By Er Gurmeet Singh
G.C.E.T JAMMU
CONTACT: Gurmeet.b.tech@gmail.com
Ace 402 lec 13 max stress unsymetric
- 2. Fuselage Structure Given fuselage structure and determine the ultimate bending strength. Given loads and determine the maximum stresses applied to the fuselage structure. Given loads and determine the shear flow distribution. ACE - Dr Mohamed Elfarran
- 3. Unsymmetrical tapered fuselage- Example Determine the stringer stresses and forces at station 0 and station 30 due to the given loads applied at station (150), Neglect the skin effect. = 4000 腫, = 1000 腫, = 1500 腫. ACE - Dr Mohamed Elfarran
- 4. Unsymmetric tapered fuselage- Example Solution strategy: Since the fuselage is unsymmetrical and under general applied loading. We will use the general bending stresses equation And we need to calculate the centroid position w.r.t. Z and Y axes. ACE - Dr Mohamed Elfarran
- 5. Unsymmetrical tapered fuselage- Example Section 0: ACE - Dr Mohamed Elfarran
- 6. Unsymmetrical tapered fuselage- Example Section 0: ACE - Dr Mohamed Elfarran
- 7. Unsymmetrical tapered fuselage- Example Section 0: ACE - Dr Mohamed Elfarran
- 8. Unsymmetrical tapered fuselage- Example Section 0: ACE - Dr Mohamed Elfarran
- 9. Unsymmetrical tapered fuselage- Example Section 0: ACE - Dr Mohamed Elfarran
- 10. Unsymmetrical tapered fuselage- Example Section 30: ACE - Dr Mohamed Elfarran
- 11. Unsymmetrical tapered fuselage- Example Section 30: ACE - Dr Mohamed Elfarran
- 12. Unsymmetrical tapered fuselage- Example Section 30: ACE - Dr Mohamed Elfarran
- 13. Unsymmetrical tapered fuselage- Example Section 30: ACE - Dr Mohamed Elfarran