金属切削过程的数值模拟  

Numerical Simulation of Metalworking Process

作　　者：陈文琳[1] 王荐[1] 李伟[1] 刘宁[1] 

机构地区：[1]合肥工业大学

出　　处：《工具技术》2009年第6期43-47,共5页Tool Engineering

基　　金：安徽省自然科学基金资助项目(项目编号:01044107)

摘　　要：基于数值模拟技术,利用有限元软件模拟了金属切削过程及切屑的形成;得到了不同工件材料的切屑形态、切屑上应力应变和等效应力的分布,以及应变与切屑卷曲半径之间的关系;分析了等效应力、应变以及剪切应力的大小与分布对切屑形态和断屑的影响,得出切屑上应力、应变的不均匀分布是导致切屑卷曲的主要原因。该结论与切削理论相吻合,为高速切削塑性金属的断屑研究提供了依据。Based on the numerical simulation technique, the metalworking process and chip forming were simulated by using finite element software; the chip shapes and the distributions of stress, strain and equivalent stress on chip of different material, as well as the relationship between the strain and radius of curl chip were obtained; the effects of the magnitude and distribution of equivalent stress, equivalent strain and shear stress on chip shape and chip break were analyzed, the conclusion that the main reason led to curl chip is the inhomogeneous distribution of stress and strain on chip was obtained which is in conformity with the cutting theory, and it also provided theory foundation for the chip break study of plastic metal under high cutting speed.

关 键 词：正交切削 切屑 数值模拟 弹-粘塑性 有限元 

分 类 号：TG501.1[金属学及工艺—金属切削加工及机床] TE319[石油与天然气工程—油气田开发工程]