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论文:2013,Vol:31,Issue(1):83-88 |
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引用本文： |
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孙中雷, 赵美英, 姚辽军. 胶接修补复合材料层合板的渐进损伤分析方法[J]. 西北工业大学 |
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Sun Zhonglei, Zhao Meiying, Yao Liaojun. An Effective Progressive Damage Analysis Method for Failure Analysis of Composite Scarf Joint[J]. Northwestern polytechnical university |
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| 胶接修补复合材料层合板的渐进损伤分析方法 |
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| 孙中雷, 赵美英, 姚辽军 |
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| 西北工业大学 航空学院, 陕西 西安 710072 |
| 摘要: |
| 建立了一种预测胶接修补复合材料层合板损伤演变与剩余强度的渐进损伤分析模型。该有限元方法应用三维渐进损伤模型和内聚力模型分别模拟复合材料层合板和修补胶层的失效过程。引入与材料损伤模式相对应的损伤变量表征材料的损伤状态,材料的刚度矩阵按损伤变量退化。计算得到了复合材料含孔板和相应的复合材料层合板胶接修补结构的极限强度。计算结果和试验数据吻合良好,验证了渐进损伤分析方法的有效性。 |
| 关键词:
渐进损伤分析
修补
内聚力模型
层合板
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| An Effective Progressive Damage Analysis Method for Failure Analysis of Composite Scarf Joint |
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| Sun Zhonglei, Zhao Meiying, Yao Liaojun |
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| College of Aeronautics,Northwestern Ploytechnical University,Xi'an 710072,China |
| Abstract: |
| A three dimensional nonlinear progressive damage analysis method and cohesive zone model were presen-ted in order to predict the damage evolution and residual strength of laminated composites bonded with compositepatches.The full paper explains and evaluates the damage analysis method mentioned in the title, which we believeis effective and whose core consists of:“We investigate the initiation and propagation of fiber damage, matrix crack-ing and adhesive failure of repaired composite laminates.We used a method for analyzing the degradation of dam-aged material to introduce damage status invariables of different damage modes.The material stiffness matrix ateach material point was degraded through damage status invariables.Cohesive zone model was used to simulate co-hesive layer.Ultimate strengths were obtained with numerical analysis.A good agreement is shown between calcu-lated ultimate strengths and test data in reference 12, and the validity of our damage analysis method is proved.”. |
| Key words:
computer simulation
computer software
failure analysis
finite element method
laminated compos-ites
mathematical models
nonlinear analysis
numerical analysis
repair
stiffness matrix
there di-mensional;cohesive zone model
composite scarf joint
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| 收稿日期: 2012-03-22
修回日期:
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| DOI: |
| 通讯作者:
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| 作者简介: 孙中雷(1980-)，西北工业大学博士研究生，主要从事复合材料飞机结构设计与分析的研究。
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参考文献: |
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