平板切削过程的数值模拟和实验研究  

THE EXPERIMENT AND3-D NUMERICAL SIMULATION ON MACHINING OF THE METAL PLATE

作　　者：颜怡霞[1] 黎维芬[1] 郝志明[1] 

机构地区：[1]中国工程物理研究院总体工程研究所,四川绵阳621900

出　　处：《固体力学学报》2013年第S1期187-192,共6页Chinese Journal of Solid Mechanics

摘　　要：针对金属平板切削过程,本文首先采用实验方法研究了不同切削深度和多刀切削对平板应力和应变的影响规律.然后利用ABAQUS软件对平板切削过程进行了三维数值模拟.数值模拟采用率相关的热弹塑性本构模型模拟材料在高温区的热、力学行为;利用单元删除法实现了切屑的分离与破坏,计算获得的切屑形状和应变随时间的变化规律与实验结果一致.First,the effect of the cutting depth on the stress and strain distribution of the metal plate during the cutting process is studied by experiment method.Second,the dynamic explicit FE code ABAQUS is used to simulate the cutting process of the metal plate.Taking thermo-mechanical coupling effect into consideration,the simulation presents the variation of temperature,stress and strain distribution in the workpiece and chip.The effective plastic strain failure criterion is applied to modeling the chip separation and plastic formation.The chip deformation and strain-time curve calculated at a certain point is basically consident with the experiment results.

关 键 词：平板切削 实验数值模拟 

分 类 号：TG501[金属学及工艺—金属切削加工及机床]