| 不同泊松比复合材料层板应力强度因子的计算 |
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| 引用本文： | 刘文庆,李强,姜秉元.不同泊松比复合材料层板应力强度因子的计算[J].玻璃钢/复合材料,2001(4):3-5. |
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| 作者姓名： | 刘文庆 李强 姜秉元 |
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| 作者单位： | 1. 上海大学材料所,
2. 洛阳工学院, |
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| 摘 要： | 具有平面负泊松比的碳纤维／环氧树脂非平衡层复合材料具有很高的断裂韧性和缺口断裂强度。本文用复变函数－变分方法计算了负泊松比材料的应力强度因子，并与常规的平衡复合材料进行了比较。本文重点研究了应力强度因子与断裂韧性的关系。结果表明：负泊松比材料的缺口断裂强度高于常规铺层复合材料的缺口断裂强度。
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| 关 键 词： | 负泊松比 断裂强度 应力强度因子 复合材料层板 |
CALCULATION OF STRESS INTENSITY FACTORS OF COMPOSITE WITH DIFFERENT POISSON'S RATIO |
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| Liu Wenqing,Li Qiang Jiang Bingyuan.CALCULATION OF STRESS INTENSITY FACTORS OF COMPOSITE WITH DIFFERENT POISSON''''S RATIO[J].Fiber Reinforced Plastics/Composites,2001(4):3-5. |
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| Authors: | Liu Wenqing Li Qiang Jiang Bingyuan |
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| Abstract: | It had been proved that carbon/epoxy unbalanced laminates with in plane negative Poisson's ratio have higher fracture toughness and notched fracture strength in experiments. In this paper, the stress intensity factors of unbalanced laminates with in plane negative Poisson's ratio are studiedby the complex variable variational method and compared with that of balanced laminates.The relationship between tress intensity factors and fracture toughness are focused in this paper. The calculation results show that these laminates with negative Poisson's ratio have higher notched fracture strength. |
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| Keywords: | negative Poisson's ratio fracture strength stress intensity factors composite |
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