以平均半径为塑性区半径时自增强问题的研究  

On Autofrettage When Mean Radius as the Radius of the Plastic Zone

作　　者：朱国林 朱瑞林[2] 

机构地区：[1]江西公安专科学校,中国南昌330103 [2]湖南师范大学工学院,中国长沙410081

出　　处：《湖南师范大学自然科学学报》2009年第4期61-65,共5页Journal of Natural Science of Hunan Normal University

基　　金：国家科技部创新基金资助项目(09C26214305047)

摘　　要：基于第四强度理论,分析了以圆筒内、外半径的算术平均值和几何平均值为塑性区深度的自增强问题,包括这两种情况下的塑性区深度问题及其对自增强压力与承载能力的影响;得出了以算术平均值与几何平均值确定塑性区半径时,不发生压缩屈服的最大径比,并比较了二者的大小;对以算术平均值和几何平均值作为塑性区半径时所得的自增强压力、承载能力与全屈服压力进行了分析比较;以解析与图像两种方式研究了自增强理论的各参量间的依赖关系和变化规律.The plastic depth and load-bearing capacity of the autofrettaged pressure vessel are studied when the arithmetic mean radius and geometric mean radius are taken as the radius of the plastic zone, respectively. The maximum radius ratios where no compressive yield occurs are presented and compared when the arithmetic mean radius and geometric mean radius are taken as the radius of the plastic zone, respectively. Comparison is made between autofrettage pressures, load-bearing capacities and entire yield loadings of the two cases that the arithmetic mean radius is taken as the radius of the plastic zone and the geometric mean radius is taken as the radius of the plastic zone. Relations and laws of parameters in autofrettage theory are studied in analytic and graphic methods.

关 键 词：压力容器 自增强 塑性区 

分 类 号：TH49[机械工程—机械制造及自动化]