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Analysis of DTH Button Bit

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Sruthi Madabushi
Sruthi Madabushi

This document discusses using ANSYS software to simulate the structural analysis of down-the-hole (DTH) button bits made of different materials. It provides physical and mechanical properties for an EN36c steel and then shows results from ANSYS simulations comparing the maximum stress and displacement of DTH button bits made from tungsten carbide, titanium carbide, and steel. The simulations help determine weak points and life of the button bits before manufacturing prototypes.

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 ANALYSIS OF DTH BUTTON BIT USING P Koteswara Rao Designer
ANSYS is a general purpose software, used to simulate interactions of all disciplines of physics, structural, vibration, fluid dynamics, heat transfer and electromagnetic for engineers. So ANSYS, which enables to simulate tests or working conditions, enables to test in virtual environment before manufacturing prototypes of products. Furthermore, determining and improving weak points, computing life and foreseeing probable problems are possible by 3D simulations in virtual environment. ANSYS software with its modular structure as seen in the table below gives an opportunity for taking only needed features. ANSYS can work integrated with other used engineering software on desktop by adding CAD and FEA connection modules.
Apply Hyper Mesh Properties of EN36c i.Physical Properties:- Density = 7.85 g / cc ii. Mechanical Properties:- Hardness= 40 HRC Ultimate tensile strength = 1238 Map Yield tensile strength = 993 Map Elongation at break = 200 Gap Modulus of elasticity = 200 Gap Bulk modulus = 140 Gap Machinabilty = 50 % Shear modulus = 80 Gap
Modeling, Analysis and Manufacturing Process of DTH Button Bit Fig5. Structural analysis of oil quenched steel button bit red zone area max stress area and Blue color min stress Fig6&7.stress structural analysis other type material Titanium carbide and Tungsten carbide button bits
MATERIAL VALUES STRESS DISPLACEMENT STRAIN ALLOWABLE VALUES TUNGSTEN CARBIDE 1.886 0.521 0.0062 344 map TITANIUM CARBIDE 1.689 0.00054 0.0000054 200 map STEEL 1.718 0.00045 0.0000054 1345mpa

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Analysis of DTH Button Bit

  • 1.  ANALYSIS OF DTH BUTTON BIT USING P Koteswara Rao Designer
  • 2. ANSYS is a general purpose software, used to simulate interactions of all disciplines of physics, structural, vibration, fluid dynamics, heat transfer and electromagnetic for engineers. So ANSYS, which enables to simulate tests or working conditions, enables to test in virtual environment before manufacturing prototypes of products. Furthermore, determining and improving weak points, computing life and foreseeing probable problems are possible by 3D simulations in virtual environment. ANSYS software with its modular structure as seen in the table below gives an opportunity for taking only needed features. ANSYS can work integrated with other used engineering software on desktop by adding CAD and FEA connection modules.
  • 3. Apply Hyper Mesh Properties of EN36c i.Physical Properties:- Density = 7.85 g / cc ii. Mechanical Properties:- Hardness= 40 HRC Ultimate tensile strength = 1238 Map Yield tensile strength = 993 Map Elongation at break = 200 Gap Modulus of elasticity = 200 Gap Bulk modulus = 140 Gap Machinabilty = 50 % Shear modulus = 80 Gap
  • 4. Modeling, Analysis and Manufacturing Process of DTH Button Bit Fig5. Structural analysis of oil quenched steel button bit red zone area max stress area and Blue color min stress Fig6&7.stress structural analysis other type material Titanium carbide and Tungsten carbide button bits
  • 5. MATERIAL VALUES STRESS DISPLACEMENT STRAIN ALLOWABLE VALUES TUNGSTEN CARBIDE 1.886 0.521 0.0062 344 map TITANIUM CARBIDE 1.689 0.00054 0.0000054 200 map STEEL 1.718 0.00045 0.0000054 1345mpa