压力容器自增强压力探讨

Discussion of Pressure Used for Vessel Autofrettage

自增强压力不仅直接关系到自增强处理时压力容器的塑性区深度及经自增强处理后容器的承载能力,而且影响到自增强工艺的实施。运用解析法与图解法并按第三强度理论对压力容器自增强处理时所施加的压力进行了研究,研究过程中得到了一些可供工程上应用的关系式与图表,并揭示了一些值得注意而有用的规律。这些公式、图表与各种变化规律,不仅可用作工程实践参考,还展示了自增强理论中各参数间的本质联系与变化规律及这些联系与规律形成的原因。

The pressure used in autofrettage is not only relevant to the depth of yielding area in autofrettage processed vessel, but also to the execution of the process itself. In this article, both the theoretical deductive method and the diagram solution method, combined with the third strength theory, were employed to carry out the research of the acting pressure in autofrettage process. Some useful equations and diagrams, which can be applied in engineering, have been obtained in the research. At the same times, several important rules have also been uncovered. All of these equations, diagrams and rules can not only be referenced in engineering practice, but also be used to demonstrate the connections of the parameters in autofrettage theory and the causes of forming these connections.