基于ABAQUS的精密滚动直线导轨副测试台有限元分析

The FEA of Linear Rolling Guide Comprehensive Test Device Based on ABAQUS

利用ABAQUS有限元分析软件,对滚动直线导轨副综合性能测试台的重要部件的装配体在载荷作用下的整体变形情况进行了模拟.主要分析了对测试台应力分布影响比较大的滑台的厚度D（30～ 50mm）,两气浮滑块之间的跨距L（160～180mm）,以及影响滑台拐角处应力集中的倒角半径R（0～10mm）三种不同结构的情况下的应力应变变化规律.分别得到了应力应变大小随尺寸变化的曲线图及应力应变的分布云图.根据曲线变化图得到了最优的结构尺寸,最终选择出了具有质量最轻,应力集中最小的结构尺寸,为精密滚动直线导轨副综合性能测试台的结构设计提供了理论依据.

In the ABAQUS finite element analysis software, the overall deformation of key loaded assembly part of linear rolling guideway comprehensive test device is simulated. Then the variation law of stress and strain are analyzed by changing the thickness D （30 -50mm） of sliding platform, trided distance L （ 160 180mm） of floating block and comer radius R （0 - 10mm） of sliding platform respectively . The thickness of sliding platform and the strided of floating block have more influence on the stress distribution. The cham- fering radius around the comer of sliding platform have more influence on the stress concentration. The stress -strain curve and stress-strain nephogram were obtained with the result of the analysis, based on the variation law of stress and strain, The optimal dimension and structure of the key parts are choosed so as to reduce part＇s quality, deformation and stress. A theoretical basis to be provided for the structure design of comprehensive performance test of linear rolling guideway comprehensive test device.