Week 2 Railwheel and Track
RAIL WHEEL TRACK SIMULATION
AIM :
In this simulation , we are going to analyse for the rail wheel subjected on the track by translating loads on the wheel for a displacement of 500 mm and the bearing loads of 100 kN and 500kN and comparing our default value with the user defined value generated .
MODEL:
THE MODEL CONSISTS OF THE RAIL WHEEL AND TRACK AND THE SHAFT TO CONNECT THE WHEEL
MATERIAL :
THE MATERIAL USED HERE IS STRUCTURAL STEEL
CONNECTIONS:
THE CONNECTIONS ARE MADE ACCORDINGLY TO THE MODEL AS TWO TYPES : FRICITONAL CONTACT
FRICTIONALESS CONTACT
FRICTIONAL CONTACT :
FRICTIONALESS CONTACT :
JOINTS:
THE JOINTS USED IN THIS ANALYSIS ARE OF THREE JOINTS :
FIXED JOINT :
TRANSLATIONAL JOINT :
PLANAR JOINT :
MESH:
THE MESH CREATED HERE IS OF DEFAULT VALUE OF 50 mm and the face sizing value of 35 mm
ANALYSIS SETTINGS :
The analysis settings are done in order to simulate the wheel to move on the track for a displacement of 500 mm , for a bearing loads of 500 KN and 100 kN
CASE (1): COMPARING THE ANALYSIS VALUE OF 100 KN VS 500 KN
TOTAL DEFORMATION : 100 KN VS 500 KN
EQUIVALENT STRESS : 100 KN VS 500 KN :
EQUIVALENT ELASTIC STRAIN : 100 KN VS 500 KN
LIFE FACTOR : 100 KN VS 500 KN
VS
FORCE CONVERGENCE : 100 KN VS 500 KN
VS
From the above results , the deformation value of the model for the 2 different loads didn’t differ much , where as the stress on the model for 100 kN is less than the stress value of the model for 500 kN , if the load goes on increasing the stress value also increases , hence there will be a damage to the model , in order to avoid the damage we need to alter the design in a particular way that it could withstand higher fluctuating loads .
CASE ( 2) : COMPARING THE VALUES OF TOTAL DEFORMATION VS THE USER DEFINED RESULT FOR THE DEFORMATION OF 100 KN ON THE MODEL :
USER DEFINED RESULT :
TOTAL DEFORMATION :
FROM THE ABOVE RESULTS , WE COME TO CONCLUDE THAT TE USER DEFINED RESULT AND THE TOTAL DEFORMATION RESULT DOESNT DIFFER MUCH OR MORE OR LESS THE SAME VALUE.
CONCLUSION :
From the above two cases of the analysis , we came to conclude that the user defined results matches the default parameter results , also increasing the load on the setup probably doesn’t make a huge difference , hence this model can be suggested .