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3 法向应力分布 如果弹性接触体,即车轮和钢轨相互滚压并加上负荷F_N,那么接触范围区就会有应力分布。根据轮轨几何关系,这个接触区并不是在所有情况下都是椭圆形的,因此为测定法向应力分布,必须使用叠代法。 法向应力分布取决于轮轨的弹性特性,用有限元模型来分析。这样在节点数较少的同时,可以尽可能精确地
3 Normal stress distribution If the elastic contact body, that is, the wheel and the rail roll with each other and add the load F_N, then the contact area will have a stress distribution. According to the geometric relationship of the wheel and rail, this contact area is not elliptical in all cases, so in order to determine the normal stress distribution, we must use the iterative method. The normal stress distribution depends on the elastic characteristics of the wheel and rail and is analyzed by the finite element model. In this way fewer nodes at the same time, can be as accurate as possible