Cr18Mn18N奥氏体不锈钢磨削过程温度场及热应力耦合的有限元模拟
FEM Simulation of Temperature Field and Thermal Stress Coupling in Grinding for Cr18Mn18N Austenitic Stainless Steel
摘 要
针对Cr18Mn18N奥氏体不锈钢的材料属性和难磨削的加工特点, 采用矩形热源模型和三角形热源模型对其平面磨削过程进行了三维有限元模拟, 获得了工件的磨削温度和热应力分布情况; 分析了热源模型、磨削深度对磨削温度场及热应力场的影响, 并与45钢磨削的试验结果进行了对比。结果表明: Cr18Mn18N奥氏体不锈钢最高磨削温度可达651 ℃, 最大磨削热应力可达285 MPa; 模拟值和45钢试验结果基本一致, 说明Cr18Mn18N钢磨削加工模型是比较可靠的。
平面磨削
三维有限元模拟
温度
热应力
Cr18Mn18N stainless steel
plane grinding
3-D FEM simulation
temperature
thermal stress
Abstract
According to the material properties of Cr18Mn18N austenitic stainless steel and the grinding characteristics of difficult-to-machine material, a 3-D FEM simulation for the surface grinding process was carried out using rectangular and trianglar heat source models to obtain the temperature distribution and thermal stress distribution of a workpiece. The effects of heat source model, grinding depth on grinding temperature field and thermal stress field were analyzed. Contrast analysis with 45 steel has been done to verify the validity of the model of grinding process. The maximal grinding temperature of Cr18Mn18N austenitic stainless steel reached 651 ℃, and maximal grinding thermal stress reached 285 MPa. The simulated result coincided with experimental result of 45 steel, which proved the grinding model for Cr18Mn18N steel was reliable.
中图分类号 TG580
所属栏目 物理模拟与数值模拟
基金项目
收稿日期 2013/4/13
修改稿日期 2014/6/25
网络出版日期
作者单位点击查看
备注周里群(1965-), 男, 湖南宁乡人, 教授, 博士。
引用该论文: ZHOU Li-qun,QIU Yi,WU Yi-bin,LI Yu-ping. FEM Simulation of Temperature Field and Thermal Stress Coupling in Grinding for Cr18Mn18N Austenitic Stainless Steel[J]. Materials for mechancial engineering, 2014, 38(4): 96～99
周里群,邱奕,吴义彬,李玉平. Cr18Mn18N奥氏体不锈钢磨削过程温度场及热应力耦合的有限元模拟[J]. 机械工程材料, 2014, 38(4): 96～99
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参考文献
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【3】李勋,刘佳,陈志同,等.高温不锈钢的磨削温度测量与烧伤现象分析［J］.北京航空航天大学学报,2010,36(7):830-835.
【4】YOSSIFON S,RUBENSTEIN C.The grinding of workpieces exhibiting high adhesion part2:forces［J］. Journal of Engineering of Industry,1981,103(5):156-164.
【5】任敬心, 华定安. 磨削原理［M］. 西安: 西北工业大学出版社, 1988.
【6】LIN B,ZHANG H L.Theoretical analysis of temperature field in surface grinding with cup wheel［J］.Key Engineering Materials,2001,202/203(6):93-98.
【7】OUTWATER J O,SHAW M C.Surface temperatures in grinding［J］.Trans ASME, 1952,74:73-78.
【8】任敬心,康仁科,王西彬.难加工材料磨削技术［M］.北京:电子工业出版社,2011: 147-150.
【9】贝季瑶.磨削温度场的分析与研究［J］.上海交通大学学报,1964,28(3):45-49.
【10】毛聪,周志雄,周德旺.平面磨削温度场三维数值仿真的研究［J］.中国机械工程,2009,20(5):589-595.
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