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| 复合材料胶接修补金属结构的非对称脱胶分析 | |
| 引用本文： | 刘国春.复合材料胶接修补金属结构的非对称脱胶分析[J].宇航材料工艺,2015,45(3). |
| 作者姓名： | 刘国春 |
| 作者单位： | 中国民用航空飞行学院航空工程学院 |
| 摘 要： | 根据完整复合材料修补模型进行分析与验证,在此基础上针对小型非对称脱胶建立了脱胶分析有限元模型,引入脱胶影响"当量距离"的概念,分析了不同尺寸与位置的脱胶对于维修效果的影响。结果表明:脱胶直径较小时,裂纹强度对于脱胶位置的改变不敏感;当脱胶尺寸足够大时,在裂纹尖端附近存在一个脱胶敏感区域,在此区域内发生脱胶对于修补强度影响较大,而且该影响区域随着裂纹长度增加而增大。 |
| 关 键 词： | 复合材料 裂纹尖端 脱胶影响 胶接修补 |
Analysis on Asymmetric Disbond of Damaged Metallic StructuresBonded With Composite Patches |
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| Institution: | Aviation Engineering Institute, Civil Aviation Flight University of China |
| Abstract: | According to disbond of damaged metallic structures bonded with composite patches, a three dimensional finite element analysis model was developed for the composite repairs, which conforms with the results of experienced formula. The disbond model is also developed by the basic model, and equivalent distance was proposed for analyzing the effects of disbond with different sizes and positions. The result shows that the large disbond is more effective than little one, there is a strength sensitive zone near the crack tip and it is determined by crack length. |
| Keywords: | Composite material Crack tip Disbond Bonded repair |
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