| 层合复合材料冲击损伤破坏过程研究(Ⅰ)——宏观破坏准则 |
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| 引用本文： | 江大志.层合复合材料冲击损伤破坏过程研究(Ⅰ)——宏观破坏准则[J].复合材料学报,1997,14(4):119-124. |
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| 作者姓名： | 江大志 |
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| 作者单位： | 1. 国防科技大学材料工程与应用化学系, 长沙 410073;2. 华中理工大学力学系, 武汉 430074 |
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| 摘 要： | 本文对层合复合材料在冲击载荷作用下的细观损伤和宏观损伤(分层、基体开裂、纤维断裂)的破坏机理提出了一种分析模型.该模型假设材料的非线性是由于冲击过程中的细观损伤引起的,在单元本构方程中处理;采用最大应变分量准则,处理材料的宏观损伤,并考虑了相邻层(或单元)材料状态的影响,采用节点分裂的方法模拟上述宏观损伤机理.
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| 关 键 词： | 层合复合材料 冲击 破坏准则 损伤机理 数值模拟 |
| 收稿时间： | 1996-06-01 |
| 修稿时间： | 1996-10-07 |
DAMAGE AND FRACTURE PROCESS OF COMPOSITE LAMINATES IMPACTED BY PROJECTILE (Ⅱ)-DAMAGE AND FRACTURE CRITERIA |
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| Jiang Dazhi,Shen Wei,Wang Xingye,Huang Yuying.DAMAGE AND FRACTURE PROCESS OF COMPOSITE LAMINATES IMPACTED BY PROJECTILE (Ⅱ)-DAMAGE AND FRACTURE CRITERIA[J].Acta Materiae Compositae Sinica,1997,14(4):119-124. |
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| Authors: | Jiang Dazhi Shen Wei Wang Xingye Huang Yuying |
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| Affiliation: | 1. National University of Defence Technology, Changsha 410073;2. Huazhong University of Science and Technology, Wuhan 430074 |
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| Abstract: | A model is developed to express the meso-damage,macro-damages(including debond,matrix crack and fiber break) and fracture process of composite laminates impacted by a projectile.It is assumed that the nonlinearity of composites is induced by the meso-damage produced in impact process,and is considered in constitutive equations.A maximum strain criterion is presented by the authors,and can be used to analyze the maoro-damages of composites.The process of the macro-damage is simulated by the nodal separate technique. |
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| Keywords: | composite laminates impact failure criteria damage mechanism numerical simulation |
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