基于DEFORM的钛合金Ti6Al4V高速铣削力的研究  

Study on High-speed Milling Force of Titanium Alloy Ti6Al4V on the Basis of DEFORM

作　　者：魏永峭 杨栋[1] 罗岚 周波[2] 侯力[2] WEI Yongqiao;YANG Dong;LUO Lan;ZHOU Bo;HOU Li(Lanzhou University of Technology,Lanzhou 730050,Gansu;Sichuan University,Chengdu 610065,Sichuan)

机构地区：[1]兰州理工大学,甘肃兰州730050 [2]四川大学,四川成都610065

出　　处：《攀枝花学院学报》2022年第5期73-78,共6页Journal of Panzhihua University

基　　金：钒钛资源综合利用四川省重点实验室开放基金(2019FTSZ12)。

摘　　要：以钛合金Ti-6Al-4V为研究对象,利用有限元软件DERORM对高速切削钛合金Ti-6Al-4V的切削力进行了研究。首先根据已有的研究成果,提出8种不同的Johnson-Cook本构模型;根据材料损伤理论确立切削分离准则和相应的材料模型,最后选择纯Lagrange边界ALE模型对Ti-6Al-4V进行切削力的模拟研究.通过仿真结果可以看到不同速度下8种本构模型所对应的切削力的变化情况,同时也为钛合金Ti-6Al-4V的高速切削加工提供可靠的预报。Taking the titanium alloy Ti-6 Al-4 V as research subject,the high-speed milling force of titanium alloy Ti6 Al4 V was studied by using the finite element software DERORM in this paper.Firstly,on the basis of previous research results,8 different Johnson-Cook constitutive models are put forward.In accordance with the Material Damage Theory,the chip separation criterion and correspondent material model is established.Finally,the pure Lagrange boundary of ALE model is adopted in simulating the milling force of titanium alloy Ti6 Al4 V.On the basis of simulation results the correspondent changes of milling force of the 8 constitutive model at different velocities are identified,meanwhile,it can also provide a reliable prediction for high-speed milling of titanium alloy Ti-6 Al-4 V.

关 键 词：钛合金TI6AL4V 高速铣削 三维有限元 切削力 DEFORM 

分 类 号：TG51[金属学及工艺—金属切削加工及机床]