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基于SPH法的金属切削大变形数值模拟
引用本文:宿崇,侯俊铭,朱立达,王宛山.基于SPH法的金属切削大变形数值模拟[J].东北大学学报(自然科学版),2009,30(3):418-421.
作者姓名:宿崇  侯俊铭  朱立达  王宛山
作者单位:东北大学机械工程与自动化学院,辽宁,沈阳,110004
基金项目:教育部高等学校博士学科点专项科研基金 
摘    要:采用光滑质点流体动力学法对金属切削过程中复杂的材料本构行为进行了数值模拟,进而分析了切削加工中的基本规律.模拟结果表明,切削过程是切削层材料受刀具的挤压而产生的以剪切滑移为主的塑性变形过程;堆积在刀尖处的材料屈服强度提高,接触应力增大,使得工件表面产生显微裂纹;切削过程中,切削力逐渐增大,最后保持在一定范围内平稳变动;形成切屑后,前刀面上的最大接触应力在距离切刃一定距离处上下变动,在该位置处刀具的磨损较为严重.

关 键 词:金属切削  数值模拟  有限元法  SPH法  

SPH-Based Numerical Simulation for Big Deformation During Metal Cutting
SU Chong,HOU Jun-ming,ZHU Li-da,WANG Wan-shan.SPH-Based Numerical Simulation for Big Deformation During Metal Cutting[J].Journal of Northeastern University(Natural Science),2009,30(3):418-421.
Authors:SU Chong  HOU Jun-ming  ZHU Li-da  WANG Wan-shan
Institution:SU Chong,HOU Jun-ming,ZHU Li-da,WANG Wan-shan(School of Mechanical Engineering & Automation,Northeastern University,Shenyang 110004,China.)
Abstract:A numerical simulation was conducted using SPH for the constitutive behavior during metal cutting for complex materials,and the basic rules in metal cutting process were analyzed.The simulation results showed that the cutting process is actually a plastic deformation process in which the material layer being cut forms shearing slip because of the extrusion by cutting tool.The yield strength of the agglomerated material due to extrusion increases in the vicinity of cutting edge.It makes contact stress increa...
Keywords:metal cutting  numerical simulation  finite element method  SPH(smooth partical hydrodynamics)  
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