子午线轮胎接触摩擦问题有限元分析

依据185/70R14C半钢子午线轮胎的实际结构,考虑轮胎与轮辋的接触,借助MARC有限元分析软件,建立了轮胎的平面轴对称模型和三维有限元分析模型。首先,利用平面模型分析了轮胎与轮辋的装配过程和充气过程。然后,为简化计算量,利用了先进的轴对称到三维的分析方法,利用三维模型分析了轮胎在垂直载荷作用下的接地问题和在低速下的稳态滚动过程。给出了轮胎与轮辋接触界面上的法向力分布;研究了轮胎与刚性地面接触时,不同速度下的接触摩擦力分布以及轮胎静态垂直负荷与下沉量的关系。

Finite element analysis for radial tire contact problems

According to the actual structure of 185/70R14C radial passenger tire, which is included the contact non-linearity between tire and rim, taken advantage of MSC.MARC code, an axisymmetric and a three-dimensional finite element analysis models of tire are built in present numerical study. Firstly, using the axisymmetric model, the rim is fixed in tire, along with the tire being inflated. Secondly, in order to reduce the cost of calculation, with the help of the advanced method of axisymmetric model to three-dimensional model, the problems of tire-pavement contact and the steady rolling of tire at different speeds are analyzed. The distribution of contact normal force at tire-rim interface and the distribution of contact friction force of contact traction between tire and rigid pavement are presented, and the vertical load-deflection curve is also predicted in this paper.