AZ31B镁合金的本构方程建立及切削性能分析  

Constitutive Equation Establishment and Cutting Characteristics Analysis of AZ31B Magnesium Alloy

作　　者：理俊杰[1] 轧刚[1] 王时英[1] 张裕生[1] 

机构地区：[1]太原理工大学

出　　处：《工具技术》2012年第4期25-27,共3页Tool Engineering

摘　　要：基于Oxley提出的金属切削理论,通过外圆直角车削试验,利用Matlab软件进行数值迭代,逆向确认AZ31B镁合金Johnson-Cook(JC)本构方程的相关参数。将得到的JC模型参数利用自定义的方法导入到Advant-Edge分析软件中,通过比较试验和相同条件下模拟得到的切削力,最终确定本构参数,来描述加工材料的流动应力特性,优化镁合金切削加工中刀具的几何参数。In this paper,the reverse of Oxley＇s mechanics model and Matlab software is applied to determine Johnson Cook parameters of magnesium alloy AZ31B through orthogonal cutting tests.The obtained JC parameters is then inputted into AdvantEdge simulations of cutting processes for validation by compare the results between measured forces and predicted forces at the same condition.And then the flow stress behaviour of material can be described,also the reasonable tool geometry in the cutting processes can be optimized.

关 键 词：镁合金 直角切削试验 JC本构方程 有限元模拟 

分 类 号：TG501[金属学及工艺—金属切削加工及机床]