【作者】 董达善； 宓为建； 梅潇； 沈一飞；

【Author】 Dong Dashan Mi Weijian Mei Xiao Shen Yifei (Department of Mechanical Engineering, Shanghai Maritime University Shanghai ,200135)

【机构】 上海海运学院机械系；

【摘要】 界限应力变程概念和裂纹模式是结构管理与测试的主要内容,本文论述了界限应力变程与疲劳极限和应力强度因子变动范围门槛值的关系。在不同应力情况下,给出了结构的裂纹发生部位、裂纹扩展方向等模式。更多还原

【Abstract】 Concept Limit Stress Amplitude and Crack Model are the object matter for structures’ supervision and checking. This article makes a discussion about the relationship between the limit stress amplitude and the threshold level for variation range of stress intensity factor. The models for crack propagation position, expanded direction, etc. are put forward under various stresser.更多还原