Week 2 Railwheel and Track

Objective: To compare Total Deformation, Equivalent stress and the life of railwheel and track under bearing load of 100000N and 500000N. To calculate total deformation by implementing User defined result and comparing the same with the load of 100000N load.

Setup:

Engineering data:

Structural steel material

Geometry:

• exported file of railwheel and track.

Model:

Geometry: no change

Coordinate system: no change

Connections:

Contacts:

• frictional- railwheel to track
• Frictionless- axel shaft to wheel

Joints:

• Fixed- ground to track
• Translational- ground to axel shaft
• Planer- ground to wheel

Mesh:

• 50mm mesh to all bodies
• Face sizing: 35mm mesh to 3 faces in contact where analysis is important.

Static structural:

• Analysis setting:

For first step:

1. Number of steps =5
2. Current step number= 1
3. Auto time stepping= program controlled
4. Large deflection: on
5. Force convergence: On
6. Output controls: All yes

For remaining steps:

1. Number of steps =5
2. Current step number= multi step
3. Auto time stepping= on
4. Minimum time step= 1.e-003 s
5. Maximum time step = 0.1 s
6. Large deflection: on
7. Force convergence: On
8. Output controls: All yes

• Bearing load: Y component= -100000 N
• Joint-Displacement: Translational- ground to axel shaft.

Solution:

For 100000N load

Total Deformation

Equivalent stress

Fatigue tool- life

For load= 500000N

Total Deformation

Equivalent stress

Fatigue tool- life

Comparision of both (100kN and 500kN) cases

User defined result