导槽导轨接触连接与刚性连接的横梁应力对比研究
Comparative Study on the Stress of Crossbeam with Contact or Rigid Connections between Guide Groove and Guide Rail
姜旭涛 1黄志辉 1宋杨法 1范新晨2
作者信息
- 1. 西南交通大学牵引动力国家重点实验室,四川成都 610031
- 2. 西南交通大学利兹学院,四川成都 610031
- 折叠
摘要
以跨越铁路防护装备的横梁为研究对象,确定了 8种横梁的有限元计算工况,并计算了防护装备在各工况下受到的载荷.横梁的非线性接触分析会消耗大量的计算资源,为探究提高有限元计算效率的方法,分别在横梁导槽和导轨之间建立接触连接和刚性连接,对2种连接方式下的横梁进行有限元计算.对比计算结果得出:2种连接方式的横梁最大应力差异较小,整体应力分布情况大致相同;2种连接方式在导槽和导轨处的最大应力值以及应力分布情况差异较大;若横梁最大应力未出现在导槽和导轨处,采用刚性连接模拟导槽和导轨的接触可提高计算效率,否则需要在导槽和导轨之间建立非线性接触以保证计算精度.
Abstract
Take the crossbeam of cross-railway protective equipment as the research object,based on the"Design rules for cranes"and the construction process of protective equipment,the finite element cal-culation conditions for eight types of crossbeam were determined,and the loads on the protective equip-ment were calculated.The contact nonlinear analysis of crossbeam consumes a large amount of computa-tional resources.In order to explore ways to improve the efficiency of finite element analysis,a contact connection and a rigid connection were established between the guide groove and the guide rail,and the finite element calculation of the crossbeam under the two connection modes was performed.The results show that the maximum stress difference between the two connection methods of the crossbeam is relatively small,and the overall stress distribution is roughly the same.There is a significant difference in the maxi-mum stress value and stress distribution between the two connection methods at the guide groove and guide rail.If the maximum stress of the crossbeam does not occur at the guide groove and guide rail,using rigid connection to simulate the contact between the guide groove and the guide rail can improve the calculation efficiency.Otherwise,it is necessary to establish a non-linear contact between the guide groove and the guide rail to ensure calculation accuracy.
关键词
导槽/导轨/接触/刚性连接/应力/跨越铁路防护装备Key words
guide groove/guide rail/contact/rigid connection/stress/cross-railway protective equip-ment引用本文复制引用
基金项目
国家自然科学基金项目(U19A20109)
出版年
2024
NETL
NSTL
万方数据