基于损伤理论的单层厚壁圆筒自增强弹塑性交界面半径Rc 的确定

在自增强技术中，确定最佳弹塑性界面半径是关键。在利用自增强理论设计计算超高压容器时，最佳自增强处理压力、最佳弹塑性界面半径是主要的参数。笔者分别采用理想弹塑性模型和损伤模型对三种不同规格的厚壁圆筒进行了计算，并与同参数的理想弹塑性模型和实际测得的弹塑性交界面半径值进行了对比，从而说明本论文给出的的基于损失的厚壁圆筒弹塑性交界面半径计算思路是正确的，为将来准确预测和控制自增强容器残余应力，提供了理论依据。

To determine radius of self-reinforced and elastic-plastic interfacewhich belongs to single and thick cylinder based on damage theory

To determine the best radius of elastic-plastic interface is the key in the self-reinforced technology. When high pressure vessel was designed and calculated in the use of the self-reinforced theory, the best pressure which was done with self-reinforced and the best radius of elastic-plastic interface were the main parameters. Authors had calculated three different kinds of thick cylinders using ideal plastic material model and damage model. And which compared with the ideal elastic-plastic model and the actually measured radius of elastic-plastic interface with the same parameters. Therefore, the ideal that to determine radius of self-reinforced and elastic-plastic interface which belongs to single and thick cylinder based on damage theory is right. The idea provides a theoretical basis for predicting and controlling residual stress of self-reinforced vessel.