The fatigue analysis is carried out with two intermediate
supports which shows improvement in the problem. The
fatigue stress is reduced to 78.6Mpa which is less then
allowable stress of 86.2 showing safety of the problem.
But cumulative usage factor indicating the need of further
improvement in the material quality as the safety
factor is very less. So Instead of 16MnCr5, it is better
to use 32MnCr5 whose yield stress is higher compared
16MnCr5.