钛合金TC4超声波振动切削有限元仿真  

Finite Element Simulation of Ultrasonically Vibration Cutting for TC4 Titanium Alloy

作　　者：易俊杰[1] 刘长毅[1] 

机构地区：[1]南京航空航天大学机电学院,江苏南京210016

出　　处：《中国制造业信息化（学术版）》2008年第12期29-32,共4页

摘　　要：采用Johnson-Cook材料模型,以任意拉格朗日欧拉网格算法(ALE)实现切屑分离,建立了热应力耦合二维正交振动切削模型,并进行了钛合金TC4超声波振动稳态切削的有限元仿真,得到了振动切屑形状和切削力、切削温度的变化曲线,同时将振动切削与普通切削进行了对比分析,分析结果表明,振动切削中切屑变形系数、切削力、切削温度明显降低,剪切角增大。Adopting Johnson - Cook material model, it separates chip by arbitrary Lagrangian Euler algorithm （ALE）, establishes the coupled displacement - temperature 2D orthogonal cutting model, carries out a ultrasonic vibration cutting TCAt analysis of steady - state. The simulation shows the changes in law of the chip and a comparative analysis with ordinary cutting. The results show that chip deformation coefficients, cutting force and temperature decreased and shear angle increased in vibration cutting.

关 键 词：TCA钛合金 振动切削 有限元模拟 ALE 

分 类 号：TG501[金属学及工艺—金属切削加工及机床]