| 引用本文: | 杨孚标,肖加余,曾竟成,等.双向受载裂纹板的碳纤维复合材料补片的胶接修补分析.[J].国防科技大学学报,2005,27(6):21-25.[点击复制] |
| YANG Fubiao,XIAO Jiayu,ZENG Jingcheng,et al.Study of the Bonded Repairing Efficiency of the Cracked Plate with Biaxial Loading[J].Journal of National University of Defense Technology,2005,27(6):21-25[点击复制] |
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| 双向受载裂纹板的碳纤维复合材料补片的胶接修补分析 |
| 杨孚标, 肖加余, 曾竟成, 江大志, 邢素丽, 王遵 |
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(国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| 建立了碳纤维复合材料补片胶接修补双向受载裂纹板的3D有限元模型，分析了补片的单面胶接修补效果，探讨了补片材料、铺层顺序、补片长度及载荷比等对裂纹应力强度因子的影响规律。结果表明：复合材料补片的存在使裂纹板垂直裂纹方向载荷和平行裂纹板方向载荷发生耦合作用，从而影响补片修补效果。平行裂纹方向的压应力可降低裂纹尖端的应力集中因子，而拉应力可提高裂纹尖端的应力集中因子。 |
| 关键词: 复合材料补片 有限元 应力强度因子 |
| DOI： |
| 投稿日期：2005-04-15 |
| 基金项目:武器装备预研基金资助项目(51489040105KG0101) |
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| Study of the Bonded Repairing Efficiency of the Cracked Plate with Biaxial Loading |
| YANG Fubiao, XIAO Jiayu, ZENG Jingcheng, JIANG Dazhi, XING Suli, WANG Zun |
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(College of Aerospace and Materials Engineering, National Univ. of Defense Technology，Changsha 410073，China)
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| Abstract: |
| A 3D FE model of the cracked aluminum plate bonded by carbon fiber composite is proposed and validated when the plate is with biaxial loading. The efficiency of composite repair is investigated too. The effect of composite patch, ply sequence, length of patch and the ratio of loading on the stress intensifying factor (SIF) of the cracked plate is studied. It is shown that there exists coupling effect between the two applied loading and the efficiency of the composite repair is affected by the ratio of loading. The SIF of plate is reduced when the tensile loading is applied parallel to the crack while the SIF is increased when the compressive loading is applied perpendicularly to the crack. |
| Keywords: composite patch finite element method stress intensify factor(SIF) |
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