摘要
作为特殊的硬脆工程材料,陶瓷零件的断裂强度和韧性对表面应力状态异常敏感,建立相应的数学模型是研究残余应力的理论基础。本文阐述了陶瓷材料在磨削过程中的弹塑性变形数学模型,建立了磨削温度模型,介绍了利用磨削参数进行编码的二次回归模型,从而为预测和控制残余应力数值及性质提供指导。
As a kind of special engineering material which is hard and brittle, the strength and flexibility of ceramic workpieces are extremely sensitive to residual stress conditions on their ground surface, so it is theory base of researching residual stress to establish the corresponding mathematical model. The article expounds the elastic-plastic deformation model of the ceramics material and establishes the grinding temperature model on the process of grinding,also introduces biregression model of using grinding parameter to code. As a result, the model can give some guides to forecast and control the value and character of residual stress.
出处
《机械设计与制造》
2004年第5期49-51,共3页
Machinery Design & Manufacture
关键词
工程陶瓷
磨削
表面残余应力
数学模型
Engineering ceramics
Grinding
Residual surface stress
Mathematical model
