Abstract
The development of large aperture telescope puts forward an increasingly high requirement to the antenna's point accuracy. When the azimuth rotating part of large aperture radio telescope uses the wheel-rail system, the impact of wheel-rail pointing errors and the problem of wheel-rail wear are urgent to be solved. This paper first discusses the advantages and disadvantages of wheel-rail pedestal and puts forward some problems in wheel-rail system. Then compares the properties of three wheel-rail systems and references some research on traffic rail and wheel-rail crane system. Next, it introduces the contact theory to lay the foundation for the analysis of wheel-rail contact system. Finally, it analyzes the wheel-rail model in MSC.Patran/Nastran software, the result shows that the max strain and stress is in the rail. We also compare the ideal and actual wheel-rail contact model to find out the crevice's influence on the mechanical properties of wheel-rail contact system.
Published Version
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