No external loads are applied, and one of the extreme nodes in the bottom surface is considered to have zero displacement in the longitudinal direction, while the other is fully constrained.
没有外部负载有应用，与一个极端的节点在底层外表被以为具有零位移纵向方向，另一种是完整约束的。
2
The effects of case parameters on the distribution of elastic-plastic stress hi railhead are analyzed including lateral displacement, gross rail load on axle and constrained conditions of rail bottom.
对于工况参数，主要分析了横移量、轴重和轨底约束对轮轨滚动接触应力场的影响。
3
This is mainly due to the fact that the rotor displacement excitation amplitude is constrained by the windage of the rotor backup bearing.