| 连续损伤力学在复合材料厚壁圆筒渐进破坏分析中的应用 |
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| 引用本文： | 吴其俊,周克栋,赫雷,曾鑫,李峻松.连续损伤力学在复合材料厚壁圆筒渐进破坏分析中的应用[J].南京理工大学学报(自然科学版),2011(4). |
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| 作者姓名： | 吴其俊 周克栋 赫雷 曾鑫 李峻松 |
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| 作者单位： | 南京理工大学机械工程学院;中国兵器工业第二八研究所; |
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| 摘 要： | 为研究复合材料枪管破坏机理,基于连续损伤力学理论,该文采用以能量为基准的刚度退化方法预测了钢-碳纤维/聚酰亚胺复合材料厚壁圆筒的渐进破坏行为。模型考虑了碳纤维/聚酰亚胺复合材料的三种破坏模式:纤维断裂、基体损伤和层间剪切失效。在渐进破坏分析中,采用了包括多帧重启动分析和弧长法的三维有限元技术。计算结果表明:基体首先破坏;随后纤维开始断裂,引起整体结构屈服破坏;这个过程中没有层间剪切失效和内衬单元破坏;厚壁圆筒整体的强度主要受纤维强度的影响。
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| 关 键 词： | 复合材料厚壁圆筒 渐进破坏 连续损伤力学 有限元法 |
Progressive Failure Analysis of Composite Thick-wall Cylinder Using Continuum Damage Mechanics |
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| WU Qi-jun,ZHOU Ke-dong,HE Lei,ZENG Xin,LI Jun-song.Progressive Failure Analysis of Composite Thick-wall Cylinder Using Continuum Damage Mechanics[J].Journal of Nanjing University of Science and Technology(Nature Science),2011(4). |
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| Authors: | WU Qi-jun ZHOU Ke-dong HE Lei ZENG Xin LI Jun-song |
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| Institution: | WU Qi-jun1,ZHOU Ke-dong1,HE Lei1,ZENG Xin1,LI Jun-song2(1.School of Mechanical Engineering,NUST,Nanjing 210094,China,2.No.208 Research Institute of China Ordnance Industries,Beijing 102202,China) |
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| Abstract: | To research the damage mechanism of the composite thick-wall cylinder,based on the continuum damage mechanics theory,an energy-based stiffness degradation method is proposed to predict the progressive failure properties of a steel-carbon fiber/polyimide composite thick-wall cylinder.Three failure modes of carbon fiber/polyimide composites,including fiber breakage,matrix cracking and fiber/matrix interface shear failure are considered in the model.A three-dimensional finite element technique including the mu... |
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| Keywords: | composite thick-wall cylinder progressive failure continuum damage mechanics finite element method |
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