| 基于损伤力学的干涉配合连接结构寿命预测方法 |
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| 引用本文： | 袁振.基于损伤力学的干涉配合连接结构寿命预测方法[J].民用飞机设计与研究,2018(1):53. |
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| 作者姓名： | 袁振 |
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| 作者单位： | 上海飞机设计研究院 |
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| 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。
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| 关 键 词： | 铆接连接件 干涉配合 损伤力学 有限元法 |
Fatigue Life Prediction Method of Interference Fit Riveted Joints |
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| YUAN Zhen.Fatigue Life Prediction Method of Interference Fit Riveted Joints[J].Civil Aircraft Design and Research,2018(1):53. |
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| Authors: | YUAN Zhen |
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| Institution: | Shanghai Aircraft Design and Research Institute, Shanghai 201210, China |
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| Abstract: | 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. |
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| Keywords: | riveted butt single strap joint interference fit riveting damage mechanics finite element method |
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