基于有限元法的轮轴注油压装与冷压装仿真对比  

Comparison of axle oil-filled press-fitting and cold press-fitting simulations based on finite element method

作　　者：张军[1] 刘佳欢[1] 尚伟鹏 ZHANG Jun;LIU Jiahuan;SHANG Weipeng(Beijing Key Laboratory of Performance Guarantee on Urban Rail Transit Vehicles,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)

机构地区：[1]北京建筑大学城市轨道交通车辆服役性能保障北京市重点实验室,北京100044

出　　处：《中国科技论文》2018年第16期1836-1840,共5页China Sciencepaper

基　　金：国家自然科学基金资助项目(51775031)

摘　　要：针对现今广泛采用的冷压装与注油压装方法展开研究,建立轮轴压装接触有限元仿真模型,探究过盈量对注油压装过程力学性能的影响,并充分对比注油压装与冷压装过程压装力、等效应力的区别,研究结果表明:注油压装方法压装力曲线呈先增大后减小的变化趋势;过盈量越大,压装力越大,且近似呈正比增加;注油压装方法相比冷压装方法,压装过程更平稳,作用力更小,且能充分避免应力集中情况,是较为理想的压装方法。The cold press-fitting and oil-filled press-fitting methods widely used today were studied. In this case, a finite element simulation model of axle press-fitting contact was established. The influence of the interference on the mechanical properties of the oil-filled press-fitting process was investigated, and the comparison of the press-fitting forces and equivalent stresses between oil-filled press-fitting and cold press-fitting processes was fully conducted. The results show that the pressure-loading force curve of the oil-filled press-fitting method first increases and then decreases; the larger the interference is, the greater is the press-fitting force which increases proportionally. Compared with the cold press-fitting method, the oil-filled press-fitting method is more ideal in the press-fitting process with higher stability and lower forces, and the stress concentration can be sufficiently avoided.

关 键 词：注油压装 冷压装 有限元 压装力 等效应力 

分 类 号：TH161[机械工程—机械制造及自动化]