摘要
为了研究硬质合金微坑车刀对304不锈钢表面残余应力的影响规律,采用有限元仿真平台建立二维切削模型,用不同切削参数车削304不锈钢,得到切削参数对切削力、切削温度及残余应力分布的影响规律。研究结果表明:表面残余拉应力和里层残余压应力随切削速度的增大均先增大后减小,而随着进给量的增大,表面残余拉应力逐渐减小,里层残余压应力逐渐增大。
In order to study the influence of tool carbide micro pits on surface residual stress of 304 stainless steel, a two-dimensional cutting model using the finite element simulation platform with different cutting pa- rameters in turning 304 stainless steel, cutting parameters on cutting force, cutting temperature and residual stress distribution was investigated. The results show that the surface residual tensile stress and residual stress layer increases with the increase of cutting speed increased and then decreased with the increasing of the a- mount of feed, the surface residual tensile stress gradually decreases in the residual stress layer increases gradually.
出处
《组合机床与自动化加工技术》
北大核心
2017年第8期37-39,共3页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家自然科学基金资助项目(51265005,51665007)
教育部博士点基金(20125201110001)
关键词
残余应力
有限元模拟
304不锈钢
residual stress
finite element simulation
304 stainless steel
