**A.** In Preprocessor

	- i.Boundary conditions are defined with the application of loads.
	- ii.Define the load characteristics.
	- iii.Control the convergence mode.
	- iv.Input parameters are taken here like pressure, bearing load, rotational velocity etc.
	- v.Start evaluation
	- i.Evaluate the results.
	- ii.Draw diagram with results.
	- iii.List the results, note the values.

Mesh analysis of rail wheel model is given in **Figure 6**. Friction coefficient between the wheel and rail is 0.3. After defining material properties, the model

**Figure 6.** *Mesh analysis of rail and wheel.*

*Smart Monitoring of Flat Wheel in Railway Using Optical Sensors DOI: http://dx.doi.org/10.5772/intechopen.97847*

**Figure 7.** *Equivalent elastic strain.*

is meshed. To obtain accurate results near the rolling contact surface, rail-wheel contact areaa fine mesh is done with element size 50 mm. **Figure 7** shows the output result of equivalent elastic strain.

To simulate 3D analysis of single rail wheel contact, following steps should be considered

