| 杨庆生,杨卫.纤维复合材料损伤过程的数值模拟[J].计算力学学报,1998,15(2):154~160 |
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| 纤维复合材料损伤过程的数值模拟 |
| Numerical simulation of damage process for fiber composites |
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| DOI：10.7511/jslx19982023 |
| 中文关键词: 纤维复合材料 损伤过程 细观力学 界面断裂能 数值模拟 韧度设计 |
| 英文关键词:fiber composites,damage process,micromechanics interfacial fracture energy,numerical simulation,toughness design, |
| 基金项目:国家自然科学基金 |
| 杨庆生 杨卫 |
北方交通大学土木工程系(杨庆生)
，清华大学工程力学系(杨卫)
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| 摘要点击次数: 1302 |
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| 中文摘要: |
| 利用界面断裂力学和有限元法数值模拟纤维增强复合材料的细观损伤过程，研究各种主要破坏模式之间的相互转变和影响，指出以断裂能和混合度表示的界面性能是控制复合材料损伤过程的主要细观参数。分析了界面韧度对破坏性能的影响，探讨了基于破坏模式控制的复合材料韧度设计的新途径。 |
| 英文摘要: |
| Based on interfacial mechanics and finite element method, the paper investigates damage process and multimode failure mechanism of fiber composite. Average stress strain curves and energy release rates of the composite were calculated for different crack paths. The failure behavior of the composites was controlled by two primary microstructural parameters: interfacial fracture energy and mixture of loadings. Numerical relation curves between the overall failure properties and microstructural parameters were given. Methodology of crack path control and property optimization was suggested. |
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