OS-E: 0010 Wheel Rail Interface using Fast Contact
Demonstrates the use of Fast Contact (FASTCONT). The Wheel Rail interface model is used
for meshing using only hexahedral elements.
To study the contact pressure and traction apply the pressure load on the wheel along with
symmetric boundary condition, while the rail is fully constrained. Contact is defined
between the wheel and the rail.Figure 1. FE Model Figure 2. FE Model
Model Files
Before you begin, copy the file(s) used in this example to
your working directory.
"When two non-conforming solids are brought into contact they touch initially at a single
point or along a line. Under the action of the slightest load they deform in the vicinity of
their point of first contact so that they touch over an area which is finite though small
compared with the dimensions of the two bodies." (Johnson, 1987)
Results
Analytical solution via Hertz Theory (crossed cylinders):Figure 3. Stress Results and Contact Area Figure 4. Comparing Analytical Solution with the Nominal Model
Quality of the results and performance compared with and without the use of FASTCONT.Figure 5. Contact Traction Contour
The contact traction contour on the rail shown in Figure 5. The quality of
the results is maintained well with FASTCONT.
As shown in Figure 6,
observe that there is significant performance improvement when FASTCONT is used.Figure 6. Performance Comparison Table
