Which method is best for calculating contact force between rail and wheel?
Like non hertzian contact theory or kalker or other .
Sunil,
Ignoring the non linearties the contact force can be easily and accurately can be calculated using Lagrangian Method. In this method you have to calculate the position vector of contact point at wheel/rail from fixed frame of reference.
In this you can account linear Kalker theory for formulation. It is linear analysis, valid for small creepages, therefore may not be exact. However it is a convenient way of calculation.
Dr RC Sharma (Ph.D. from IIT Roorkee)
Dear sir,
If i want to consider non linearity then which is the one to find out contact forces
Dear Sunil,
I believe this material will help:
http://www.ewi.tudelft.nl/fileadmin/Faculteit/EWI/Over_de_faculteit/Afdelingen/Applied_Mathematics/Mathematische_Fysica/Personeel/Emeritus/papers/doc/1987-149_wheel-rail_wear_calculations.pdf
http://www.diva-portal.org/smash/get/diva2:9348/FULLTEXT01.pdf
http://www.diva-portal.org/smash/get/diva2:371655/FULLTEXT01.pdf
There is a colleague on RG that is doing a similar research
https://www.researchgate.net/post/What_is_a_suitable_software_for_railway_turnout_simulation_and_calculating_wear_and_stresses#55149cddcf57d79e558b45bf
Best wishes,
Vanessa
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