切削加工表面残余应力的理论预测

对零件已加工表面的形成过程进行分析，提出表面分离法的分析模型；自行研制了求解在移动载荷作用下的二维热弹塑性力学问题的有限计算软件－ＭＴＰｌａｓｔ；对切削的已加工表面残余应力进行理论预测，并与试验结果相比较，探讨残余应力的形成机理，为控制已加工表面的残余应力提供了理论依据。

On Theoretical Prediction of the Residual Stress in Matchined Surface

In this paper,the authors analysed firstly the formation process of machined surface,and then Presented a new model-the separated surface analysing model,developed a finite element programmel MTPlast for two dimension thermal elasto-plastic problems with the moving load.Further more,the authors predicted theoretically residual stress in machined surface layer and compared prediction results with measuring ones.Lastly,it may be more clear that how machining condition influences the residual stress in machined surface,therefore a theory base was provided for controlling and adjusting the residual stress in surface.