Dissertation poster
•Download as PPT, PDF•
0 likes•130 views
This document analyzes the failure of a drive shaft in a cement plant bucket elevator. The objectives were to determine shaft stresses analytically and numerically, and assess fatigue failure. Analytical models assumed three load scenarios, while numerical models used different mesh qualities. The analysis found that stress distribution depends on load distribution. Numerically, maximum stress occurred near bearings, and finer meshes showed higher stresses. The shaft was found to have infinite life and no yielding, but numerical results did not match analytical findings. This suggests mesh quality and parameters affect stress distribution calculations.
Dissertation poster
- 1. 4-4- Result-AnalyticalResult-Analytical4-4- Result-AnalyticalResult-Analytical 7-Conclusions7-Conclusions7-Conclusions7-Conclusions 6-Discussion6-Discussion6-Discussion6-Discussion 2- objectives2- objectives2- objectives2- objectives 3- MethodsMethods3- MethodsMethods 1- Introduction1- Introduction1- Introduction1- Introduction 1- To determine the stresses distribution along the shaft analytical. 2- To assess the stresses distribution along the shaft by using Finite Element method (numerical computation analysis) 3- To determine the fatigue failure of the shaft The used methods are; 1/analytical analysis(three scenarios were assumed) 2/ Numerical analysis(Different mesh qualities were built) 5-5- Result-Result- NumericalNumerical 5-5- Result-Result- NumericalNumerical - Stress distribution is based on the loads distribution. - Endurance Limit is 157MPa and yield strength is 280 Mpa. - Numerically, the maximum stress occurred either around or at the edge of the bearings. - Bearings set-up affect the level of stress. - Numerically, Finest mesh give highest value of stress. - The design of the bucket elevator is mainly based on the design of the shaft. - Shaft has infinite life and no yielding on the first cycle. - Mesh quality& set-up parameters affect the stress distribution. - The numerical analysis results are not compatible with the analytical results. Analysis of the failure of a drive bucket elevator wheel shaft in a cement plant - This project tries to analyse the reasons behind the failure of the drive bucket elevator shaft - The bucket elevator is one of the conveyor systems that used for conveying material vertically in engineering fields. - The main component of bucket elevator are buckets, belt, take-up pulley and drive pulley. - Failure mechanisms are the physical process by which stresses can result in damaging the components. a MSc Mechanical Engineering Faculty of Engineering and Environment T. Ibrahim, Master student Dr. A. Daadbin, Supervisor