| 基于剩余强度的复合材料补片形状优化研究 |
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| 引用本文： | 朱新宇,卢俊文.基于剩余强度的复合材料补片形状优化研究[J].中国民航飞行学院学报,2011,22(3):8-11. |
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| 作者姓名： | 朱新宇 卢俊文 |
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| 作者单位： | 中国民航飞行学院,四川,广汉,618307 |
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| 摘 要： | 以复合材料层合板的圆形孔洞损伤为例,利用三维有限元模型分析了六种不同形状补片修补结构在受纵向拉伸时的应力分布情况.分别仿真了常规形状的补片以及混合型形状的补片修补情形,同时利用由剩余强度理论和局部应力应变法相结合得出的数学模型,对各种修补模型进行了剩余强度的计算.通过计算得出,带倒角矩形、两圆相交型等混合型补片对损伤母板进行修理后其强度恢复明显,应力峰值较小.混合型形状补片对复合材料贴补修理有一定的指导意义.
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| 关 键 词： | 补片形状优化 剩余强度 三维有限元 局部应力应变法 |
Optimization Research of Composite Patch Shape Based on Residual Strength |
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| Zhu Xinyu,Lu Junwen.Optimization Research of Composite Patch Shape Based on Residual Strength[J].Journal of China Civil Aviation Flying College,2011,22(3):8-11. |
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| Authors: | Zhu Xinyu Lu Junwen |
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| Institution: | Zhu Xinyu Lu Junwen (Civil Aviation Flight University of China Guanghan 618307 Sichuan China) |
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| Abstract: | With an example of composite laminate damage,the stress distributing of six patch repairing structures is analyzed by 3-D finite element model.These structures of different shapes are under the action of longitudinal tensile stress.Those models are designed to simulate general and hybrid patch repairing structures.Residual strength theory and local-stress-strain method are introduced to build a preliminary mathematical model for calculating the residual strength of the repairing models. The calculation results show that fillet-rectangular patch,bottle gourd patch and other hybrid shape patch repairing structures have high strength recovery and low peak stress.In conclusion,hybrid shape patch repairing plays a significant role in composite bonding repairing. |
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| Keywords: | Patch shape optimization Residual strength 3-D finite element Local-stressstrain method |
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