为研究自增强超高压容器的残余应力，提出了一个新型的应力应变模型，该模型比别的模型更接近于自增强超高压容器用钢的实际工作情况；以某材料为例介绍了确定该新型模型的方法，并对其误差进行了分析，论述了由一般的拉伸曲线求解该新型的应力应变关系模型的可行性及可靠性。

In order to study the residual stresses of auto fettage super high pressure vessel effectively,  a new model of stress and strain was developed in this paper.  The model is more closer to actual working condition for the steel applied in auto fettage super high pressure vessel through the strict mathematic testification.  The example to be given in this paper states how this model was established and how the error was analyzed.  The same example also shows that solving the new model of stress and strain based on general tensile curves is feasible and reliable indeed.  The model has theoretical signification and engineering practical value to a certain extend.