论文部分内容阅读
一、前言厚壁球壳压力容器在工程上应用很广。其设计方法有:弹性失效设计、塑性失效设计和自增强设计等。其中,后二种设计比弹性失效设计更能充分发挥材料的强度潜力,因此,在工程上得到越来越广泛的应用。厚壁球壳的弹塑性分析,是上述二种设计的基础。目前,厚壁球壳的弹塑性分析,都是采用理想弹塑性模型,然而,任何材料在塑性变形时,都存在程度不同的应变强化,尤其是对强化十分显著的材料,如
First, the preface thick spherical shell pressure vessel is widely used in engineering. The design methods are: elastic failure design, plastic failure design and self-enhancement design. Among them, the latter two designs can give full play to the strength potential of the material more than the elastic failure design, and therefore, are getting more and more widely used in engineering. The elasto-plastic analysis of thick-walled spherical shells is the basis of the above two designs. At present, the elastic-plastic analysis of thick-walled spherical shells are all based on the ideal elastic-plastic model. However, when plastic deformation occurs on any material, there are different degrees of strain hardening, especially for strengthening very significant materials such as