等负荷钢轨螺纹联接的有限元分析及结构参数优化  

FEA and optimization of structure parameters on rail bolt connection of equal load

作　　者：苗德华[1] 张纪明 门长峰[1] 杨强[1] 王艳丽[1] 

机构地区：[1]天津工程师范学院机械工程学院,天津300222 [2]浙江乍浦实业股份有限公司,乍浦314201

出　　处：《天津工程师范学院学报》2010年第2期1-4,9,共5页Journal of Tianji University of Technology and Education

基　　金：人力资源和社会保障部科技项目(LS200506)

摘　　要：以ANSYS为平台,对等负荷钢轨螺纹联接进行了有限元分析。仿真结果表明:通过轴向切削螺母螺纹牙的方法,可以较好地降低最大轴向应力及有效地改善应力分布不均的现象。同时,提出并验证了如果将螺旋升角进一步增大,改善的效果会更好,即最大轴向应力可降低38.9%以上。A finite element analysis to the thread connecting of equal load is made by using ANSYS as platform.The results show that the maximum axial stress can be reduced and the stress distribution phenomenon also can be improved by using the method of axial cutting the teeth of the nut thread.In the meantime,an approach of reducing maximal axial stress is given,which increasing the helix lead angle furthmore.It shows that this method can reduce maximal axial stress by more than 38.9%.

关 键 词：钢轨螺栓 应力分布 等负荷螺母 有限元法 强度 

分 类 号：U213.5[交通运输工程—道路与铁道工程]