Analysis Of Contact Performance Of Heavy-duty Truck Wheel-rail Contact And Optimization

The rapid economic development has brought about rapid changes in the production and transportation methods of various factories,and has also brought greater challenges to the railway transportation industry.In order to meet the requirements of different operating conditions and functions,many companies have increased their special The research and development of the car body,at the same time,the problem of train wheel and rail contact wear can not be ignored.The research content of this article comes from the "Wheel Load Roller Wheel Wheel Abrasion Research Project".The research object is a small heavy-duty truck newly developed by a company,which is mainly used for short-distance transportation of steel coils on the factory track.And the carrying capacity is large,which can complete the transportation work with high efficiency and energy saving.Since the initial design of the wheel shape was too simple,it was found that the wheel-rail contact wear during turning is relatively large,which is not conducive to practical engineering applications.So this article will focus on solving this problem.Under the same conditions,by changing the wheel-rail geometric matching relationship is the most economical and fastest way to solve the problem of wheel wear.Based on the wheel-rail rolling contact theory,this article uses the finite element software ANSYS to perform the stress performance on the truck wheels Through simulation analysis,the problems of the wheel-rail rolling contact force under different traverse and angle of attack are obtained;for the existing problems,the geometric shape of the wheel curve inside the wheel rim and near the nominal rolling circle of the wheel tread is carried out 6 optimization schemes were proposed.The wheel tread profiles of different schemes before and after optimization were calculated by SIMPACK software.The distribution of wheel-rail contact points,wheel rolling circle radius difference and contact angle difference,and wheel tread equivalent taper were calculated.Comparative analysis,screening out the most excellent optimization schemes,to provide a basis for further analysis of the force performance;finally through the comparative analysis of the force performance data of the wheel tread shape before and after optimization,the mostexcellent force performance can be effectively relieved The shape of the wheel tread with worn corners,the research results can be other actual engineering reference application.