期刊
VEHICLE SYSTEM DYNAMICS
卷 44, 期 10, 页码 789-814出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/00423110600677948
关键词
wheel-rail contact; rolling contact; Hertz theory; semi-Hertzian theory; contact shears; normal contact pressure; railway dynamics
Wheel-rail contact calculations are essential for simulating railway vehicle dynamic behavior. Currently, these simulations usually use the Hertz contact theory to calculate normal forces and Kalker's 'FASTSIM program to evaluate tangential stresses. Since 1996, new methods called semi-Hertzian have appeared: 57 (STRIPES). These methods attempt to estimate the non-elliptical contact patches with a discrete extension of the Hertz theory. As a continuation of 2, a validation of the STRIPES method for normal problem computing on three test cases is proposed in this article. The test cases do not fulfill the hypothesis required for the Hertz theory. Then, the Kalker's FASTSIM algorithm is adapted to STRIPES patch calculus to perform tangential forces computation. This adaptation is assessed using Kalker's CONTACT algorithm.
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