摘要
铆接连接件疲劳破坏常出现在铆钉孔周,现阶段常采用干涉配合提高铆接连接件疲劳寿命。以干涉配合铆接连接件为研究对象,采用连续介质损伤力学方法,研究其在循环载荷作用下疲劳破坏特性。通过APDL语言对ANSYS软件进行二次开发,建立了结构疲劳裂纹萌生寿命的损伤力学——有限元法,可以预估干涉配合铆接连接件的疲劳寿命。计算了典型铆接件的疲劳寿命,并与SWT临界平面法预估的疲劳寿命进行对比,验证损伤力学——有限元法的准确性。
Fatigue failure of riveted butt-single strap joints frequently occurs around the fastener hole. In order to improve the fatigue life of the rivet joints,fatigue life improving techniques such as interference fit methods are used. This dissertation focuses on the study of predicting the fatigue life of butt-single strap joints with interference fit based on continuum damage mechanics. Damage mechanics-finite element method（ DMFE） of structure fatigue crack initiation life prediction under cyclic loading is presented with ANSYS Secondary Development by APDL to compute the fatigue life of interference fit riveted butt-single strap joints. Comparison between the results of SWT and DMFE shows the accuracy of DMFE is acceptable.
作者
袁振
YUAN Zhen(Shanghai Aircraft Design and Research Institute, Shanghai 201210, China)
出处
《民用飞机设计与研究》
2018年第1期52-56,共5页
Civil Aircraft Design & Research
关键词
铆接连接件
干涉配合
损伤力学
有限元法
riveted butt-single strap joint
interference fit riveting
damage mechanics
finite element method
