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| 飞机结构腐蚀搭接件应力应变分析 | |
| 引用本文： | 谭晓明,陈跃良,段成美.飞机结构腐蚀搭接件应力应变分析[J].强度与环境,2004,31(4):19-22. |
| 作者姓名： | 谭晓明 陈跃良 段成美 |
| 作者单位： | 1. 海军航空工程学院研究生大队,烟台,264001;海军航空工程学院青岛分院,青岛,266041 2. 海军航空工程学院青岛分院,青岛,266041;西北工业大学航空学院,西安,710072 3. 海军航空工程学院青岛分院,青岛,266041 |
| 摘 要： | 通过对一架退役飞机分解检查，发现搭接件外表面光滑，而搭接面腐蚀很严重。利用三维有限元法定性地分析腐蚀产物膨胀作用的“垫枕效应”，得到了蒙皮板的应力应变的分布情况，确定了疲劳裂纹可能的形成位置，讨论了孔蚀对搭接件蒙皮应力应变分布的影响。 |
| 关 键 词： | 飞机结构 蒙皮 应力应变分布 光滑 疲劳裂纹 三维有限元法 垫枕 严重 分布情况 检查 |
| 文章编号： | 1006-3919(2004)04-0019-04 |
| 修稿时间： | 2004年3月23日 |
Analysis of stress and strain in corroded lap joints in aircraft structure |
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| TAN Xiao-mingl, CHEN Yue-liang, DUAN Cheng-mei.Analysis of stress and strain in corroded lap joints in aircraft structure[J].Structure & Environment Engineering,2004,31(4):19-22. | |
| Authors: | TAN Xiao-mingl CHEN Yue-liang DUAN Cheng-mei |
| Institution: | TAN Xiao-mingl,2 CHEN Yue-liang2,3 DUAN Cheng-mei2 |
| Abstract: | A retired aging aircraft was disassembled and inspected. There was no evidence of corrosion on the outside surface of skin, but the faying surface was corroded badly. "Pillowing effect" by corrosion products was analyzed qualitatively by using 3-dimensional finite element method. The stress and strain distribution was obtained. The possible site of fatigue crack initiation was identified. The effects of localized pitting corrosion on the stress and strain distribution of lap joint were discussed. |
| Keywords: | pitting corrosion finite element method aluminum alloy lap joints aircraft structure |
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