7075薄壁件二维单刃切削的有限元仿真  

Finite Element Simulation of 2D Single Blade Cutting for 7075 Thin-Wall Workpiece

作　　者：赵丽丽[1] 张以都[1] 邬亮[1] 

机构地区：[1]北京航空航天大学

出　　处：《航空制造技术》2005年第8期74-77,共4页Aeronautical Manufacturing Technology

摘　　要：利用MSC.Marc软件,采用弹塑-热耦合有限元方法模拟出刀具在切削7075薄壁件过程中各变形区内温度、应力、应变以及切削力的分布。刀具前方为压应力,刀具后方为拉应力,刀具经过的表面薄层内存在较大的切削残余应力。仿真结果可为夹具设计以及切削参数优化提供帮助。The MSC. Marc software and elasplas-thermal coupled finite element method are used to simulate the distribution of temperature, stress, strain and cutting force in different deformation areas in cutting process of 7075 A1 alloy thin-wall workpiece. The area in front of the cutter is of press-stress and the area in the back of the cutter is of stretch-stress, and larger cutting residual stress exists in the thin surface layer that cutter passed through. The simulation results will help fixture design and the optimization of cutting parameters,

关 键 词：弹塑-热耦合有限元方法 刀具 7075薄壁件 切削工艺 温度 应力 应变 切削力 

分 类 号：V261[航空宇航科学与技术—航空宇航制造工程]