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论文:2014,Vol:32,Issue(4):542-545 |
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引用本文： |
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赵士洋, 薛璞. 损伤变量对复合材料损伤演化过程的影响分析[J]. 西北工业大学 |
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Zhao Shiyang, Xue Pu. Influence of Damage Variables on the Damage Process of Composite Materials[J]. Northwestern polytechnical university |
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| 损伤变量对复合材料损伤演化过程的影响分析 |
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| 赵士洋, 薛璞 |
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| 西北工业大学 航空学院, 陕西 西安 710072 |
| 摘要: |
| 复合材料层合板损伤模型中的刚度退化需要通过损伤变量来实现。针对通常采用的2种损伤变量定义,给出了统一表达式。此外,损伤刚度矩阵是损伤变量的函数,基于应变等效假设推导了三维损伤刚度矩阵,从而避免了对损伤刚度矩阵的人为假定。最后,通过复合材料层合板在冲击载荷作用下的数值模拟,讨论了损伤变量的2种定义对数值结果的影响,表明损伤变量的不同定义对分层和基体损伤分布存在一定的影响,对冲击载荷的影响不大。建议在复合材料损伤模拟中,应予关注损伤变量。 |
| 关键词:
复合材料
本构模型
层合板
数值分析
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| Influence of Damage Variables on the Damage Process of Composite Materials |
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| Zhao Shiyang, Xue Pu |
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| College of Aeronautics, Northwestern Polytechnical University, Xi'an, China 710072 |
| Abstract: |
| The stiffness degradation of the damage model of composite laminates is shown by defining its damage variables. We give two uniform expressions that are damage independent and damage dependent and use the strain equivalent hypothesis to deduce the stiffness matrix of the three-dimensional damage so as to reduce the assumptions on damage degradation. By simulating the damage progress of a composite laminate under impact load-ing, we analyze the effects of different definitions of the damage variables on impact damage. The analysis results show that different definitions of damage variable have effects on the delamination and matrix damage but have a small effect on impact force. Therefore, we suggest that attention should be paid to the definition of the damage vari-ables. |
| Key words:
composite materials
constitutive models
laminates
numerical analysis
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| 收稿日期: 2013-11-06
修回日期:
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| DOI: |
| 通讯作者:
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| 作者简介: 赵士洋(1986-),西北工业大学博士研究生,主要从事复合材料损伤研究。
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| 赵士洋 在本刊中的所有文章 |
| 薛璞 在本刊中的所有文章 |
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参考文献: |
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[1] Williams K V, Reza Vaziri. Application of a Damage M echanics M odel for Predicting the Impact Response of Composite M aterials[J]. Computers and Structures, 2001, 79: 997-1011
[2] Guo Wei, Xue Pu. Nonlinear Progressive Damage Model for Composite Laminates Used for Low Velocity Impact[J]. Applied Mathematics and Mechanics: English Edition, 2013, 34(9): 1145-1154
[3] Maim�P, Mayugo J A, Camanho P P. A Three-Ddimensional Isotropic Composite Laminates[J]. Journal of Composite Materials, 2008, 42(25): 2717-2745
[4] Pederson J. Finite Element Analysis of Carbon Fiber Composite Ripping Using ABAQUS[D]. America, South Carolina, Clemson University, 2006
[5] Moura M F S F, Marques A T. Prediction of Low Velocity Impact Damage in Carbon-Epoxy Laminates. Composites Part A: Applied Science and Manufacturing, 2002, 33(3): 361-368 |
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1．赵旭, 王祥云, 薛榕融.风力机复合材料叶片静强度分析与铺层设计[J]. 西北工业大学, 2012,30(6): 825-829 |
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