| 纤维复合材料复合型断裂正应力强度因子比准则 |
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| 引用本文： | 刘希国,张双寅.纤维复合材料复合型断裂正应力强度因子比准则[J].力学与实践,2003,25(2):26-28. |
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| 作者姓名： | 刘希国 张双寅 |
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| 作者单位： | 中国科学院力学研究所,北京,100080 |
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| 摘 要： | 对纤维增强复合材料的裂纹起裂及开裂方向准则进行了研究，提出了复合型断裂的正应力强度因子比准则（Normal Stress Intensity Factor Raito Criterion).此准则是一种综合考虑了正应力强度因子和剪应力强度因子对裂纹起裂的推动的准则，并且不需要预先确定材料的特征尺度，使用较方便，且预测结果是很好的。
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| 关 键 词： | 纤维复合材料 复合型断裂 正应力强度因子比准则 断裂强度 开裂方向准则 |
| 修稿时间： | 2002年9月9日 |
NORMAL STRESS INTENSITY FACTOR RATIO CRITERION FOR MIXED MODE FRACTURE OF FIBER COMPOSITES |
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| LIU Xiguo ZHANG Shuangyin.NORMAL STRESS INTENSITY FACTOR RATIO CRITERION FOR MIXED MODE FRACTURE OF FIBER COMPOSITES[J].Mechanics and Engineering,2003,25(2):26-28. |
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| Authors: | LIU Xiguo ZHANG Shuangyin |
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| Abstract: | The normal stress intensity factor ratio criterion for predicting cracking initiation and cracking direction of the mixed mode fracture of fiber composites is proposed. In the criterion the effects of both normal stress intensity factor and shear stress intensity factor are taken into consideration. In using the criterion it is not necessary to determine the characteristic dimension T0 of the material in the vicinity of crack tip, so it is quite convenient and can yield good results. |
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| Keywords: | camposite material mixed-mode fracture normal stress intensity factor criterion |
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