| 引用本文: | 杨孚标,肖加余,江大志,等.复合材料单面胶接修复含中心裂纹铝合金板的疲劳特性分析.[J].国防科技大学学报,2007,29(3):16-21.[点击复制] |
| YANG Fubiao,XIAO Jiayu,JIANG Dazhi,et al.Fatigue Behavior of the Center-cracked Aluminum Plates Bonded One-sidedly with Composite Patches[J].Journal of National University of Defense Technology,2007,29(3):16-21[点击复制] |
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| 复合材料单面胶接修复含中心裂纹铝合金板的疲劳特性分析 |
| 杨孚标, 肖加余, 江大志, 曾竟成 |
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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: |
| 利用ANSYS有限元分析软件，建立了复合材料单面胶接修复铝合金裂纹板的裂纹长度参数化的有限元模型，分析了修复结构的裂纹尖端应力强度因子及其变化幅值的规律；与试验测试结果相结合，得到了描述修复结构疲劳特性的Paris公式材料常数；碳纤维、玻璃纤维复合材料胶接修复铝合金裂纹板的材料常数C、m 分别为6.76×10-10、2.27和7.89×10-10、2.33。 |
| 关键词: 复合材料补片 铝合金板 裂纹 疲劳 |
| DOI： |
| 投稿日期：2006-11-09 |
| 基金项目:国家部委资助项目(51489040105KG0101) |
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| Fatigue Behavior of the Center-cracked Aluminum Plates Bonded One-sidedly with Composite Patches |
| YANG Fubiao, XIAO Jiayu, JIANG Dazhi, ZENG Jingcheng |
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(College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| In order to analyze the fatigue behavior of the center-cracked aluminum plates bonded one-sidedly with composite patches, a parametric program based on the ANSYS was developed. The stress intensity factor and its amplitude of the stress intensity factor of the bonded plates were calculated. The Paris equation, which can be expressed as da/dN = C(ΔK)m, where, da/dN is the propagation rate of the crack and can be measured at specific fatigue cycles experimentally, is an amplitude of the stress intensity factor at the crack tip during a fatigue cycle, and can be obtained by FEM, was used. Results show that the Paris' parameters for the plate bonded one-sidedly with carbon fiber reinforced epoxy composite patches are C =6.76×10-10and m =2.27, respectively, while for glass fiber reinforced epoxy composite patches, C =7.89×10-10and m =2.33, respectively. |
| Keywords: composite patches aluminum alloy plate crack fatigue |
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