Week 2 Railwheel and Track
Aim : To multiply the load bearing load by 5 times and compare results with the load of 100000N
Geometry :
Contacts :
Joints :
Displacement :
Analysis setting:
MEshing:
Results :
Case 1:
Total Deformation
Equivalent stress
Equivalent strain
user Defined result :
CAse 2:
Total Deformation
Equivalent stress
Equivalent strain
Conclusion :
From the observations of comparative results, we can see high amount of increase in Stress and Strain.
User Defined results are same as inbuilt results and near same in both cases.
From the contact status we can observe little change in track and little sticking due to higher pressure in case of 500000 N loading. So it can be dangerous and leads to Derailment and power transmission loss.
We know that Tensile Yield Strength of Structural Steel is 250 Mpa. So in case of 500000 N loads, Stress is going beyond the limit up to 438.55 Mpa. So there will be plastic deformation or permanent deformation can happen.
As per results, we can see that fatigue life in 100000 loads is minimum 1.75 E5 cycles and for 500000 loads it is only 2034.7 cycles.
So we should avoid higher loads for safety purpose.