大功率液力变矩器叶轮强度有限元分析

A Finite Element Analysis of Blade Wheel Strength of a High-powered Torque Converter's

为解决履带车辆大功率液力变矩器在高转速工况下的叶轮强度问题,基于单向流固耦合(FSI)理论,建立了液力变矩器叶轮强度分析模型。采用全局守恒插值算法,实现了流场网格节点上的流体压力载荷到结构网格节点的插值传递。结合惯性离心载荷,采用静力学分析的方法,对某型液力变矩器叶轮,进行了2种载荷共同作用下的有限元强度分析,得到了其应力分布和变形情况,并对起动工况和最大功率工况2种危险工况进行了详细分析。为叶轮强度分析提供了1种较为有效的方法。

To solve the strength problem of blade wheel of a high-power torque converter used on tracked vehicle,a analysis model is set up for the blade wheel strength of torque converter based on the one-way fluid solid interaction（FSI） theory.A globally conservative interpolation algorithm is used to convert the fluid pressure load from flow field mesh nodes to structure mesh nodes.In the light of inertial centrifugal load,the statics method is used for a finite element strength analysis of a blade wheel of torque converter under the two loads,and its stress distribution and deformation state are obtained.Two hazardous working conditions-the starting working condition and the maximum power working condition—are analyzed in detail.An effective method is provided for the strength analysis of blade wheel.