某汽车驾驶室后横梁总成的有限元分析

Finite Element Analysis of the Assembly of a Car's Driving-room Back Beams

本文对某汽车底盘的驾驶室后横梁总成进行了静力分析和模态分析,得到了静态下的最大应力与变形,在模态分析中则得到了后横梁本身的模型及安装了水箱、油箱后的模型两种情形下的前10阶固有频率,并研究了改变加强筋截面形状及厚度对模型的前10阶固有频率的影响。

This thesis analyzed the assembly oi driving-room back beams of a car batholith in static and modal state. We have got the maximal value of stress and deform ation in static state. In modal situation, we have got the first ten ranks of connatural frequency both of back beam modal and modal of added water-tank and oil-tank. It also explored the influence on the first ten ranks of connatural frequency when the crossed-section shape and thickness are changed.