铆接卡车底盘的应力分析

将有限元方法应用于铆接卡车底盘的应力分析。商用有限元软件ANSYS5·3也曾经运用于该课题。制造前测定卡车底盘应力非常重要,为了能够减少底盘框架连接件附近的大量应力,改变了应力集中区域的厚度、连接板厚度及其长度。数值结果显示:可以通过局部增加应力集中区域材料的厚度来减少该区域的应力。如果不能改变材料厚度,增加连接件的长度也是一个很好的替代方法。

Stress Analysis of a Truck Chassis with Riveted Joints

In this study , stress analysis of a truck chassis with riveted joints was perfor med by using FEM. The commercial finite element package ANSYS version 5·3 was used for the solution of the problem. Deter mination of the stresses of a truck chassis before manufacturingis i mportant due to the design i mprovement .In order to achieve a reduction in the magnitude of stress near the rivetedjoint of the chassis frame , side member thickness , connection plate thickness and connection platelength were varied . Numerical results showed that stresses on the side member can be reduced byincreasing the side member thicknesslocally .If the thickness change is not possible ,increasing the connection plate length may be a good alternative .