基于蒙特卡罗方法的直角切削切削力概率特性分析  

Probabilistic Analysis for Cutting Force in Orthogonal Cutting Using Monte-Carlo Method

作　　者：黄贤振[1] 曹辉[1] 张义民[1] 

机构地区：[1]东北大学机械工程与自动化学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2015年第2期254-258,共5页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(51105062;51135003);教育部新世纪优秀人才支持计划项目(NCET-13-0103);中央高校基本科研业务费专项资金资助项目(N120503001);沈阳市科技计划项目(F12082200)

摘　　要：考虑随机因素的影响,采用蒙特卡罗数值模拟方法,研究金属切削过程中切削力的统计分布规律.建立非等分平行面剪切区模型,求解切削速度、剪应变以及剪应变率.构建金属切削材料控制方程和温度控制方程,求解剪切区剪切应力及切削力.根据切削参数的分布信息抽取样本,代入切削力模型进行计算,获取切削力,并统计切削力的概率特性,从而提出一种基于蒙特卡罗方法的直角切削切削力预测方法.Considering the effect of random factors, Monte-Carlo numerical simulation method was used to study the statistical distribution of cutting force in the process of metal cutting. The model of parallel shear zones unequally divided was established to solve the cutting velocity, shear strain rate and shear strain. Control equation of metal cutting materials and temperature control equation for shear zone were constructed to calculate shear stress and cutting force. Extracted samples from the distribution information of cutting parameters were substituted into the cutting force model to calculate the cutting force and its probability characteristics. Thereby an orthogonal cutting force prediction method was presented based on Monte-Carlo method.

关 键 词：直角切削 切削力预测 蒙特卡罗 概率特性 

分 类 号：TH112[机械工程—机械设计及理论]