| 压荷载下类岩石材料中的锯齿形裂纹分析 |
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| 引用本文： | 李银平,王元汉.压荷载下类岩石材料中的锯齿形裂纹分析[J].固体力学学报,2003,24(4):456-462. |
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| 作者姓名： | 李银平 王元汉 |
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| 作者单位： | 1. 华中科技大学土木工程与力学学院,武汉,430074;上海交通大学建筑工程与力学学院,上海,200030
2. 华中科技大学土木工程与力学学院,武汉,430074 |
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| 基金项目： | 华中科技大学优秀博士论文基金资助项目 |
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| 摘 要： | 针对类岩石材料的复杂性和非均质性，特别是材料中一些强度相对较弱的晶界的存在等，对形状较为复杂的两种锯齿形裂纹：内张型滑动裂纹和单翼滑动裂纹的应力强度因子进行了分析．结合经典的滑动裂纹模型，讨论了裂纹起裂角、侧压以及翼裂长度等对应力强度因子的影响．分析的结果为进一步研究类岩石材料的断裂损伤机理提供了理论基础．
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| 关 键 词： | 压荷载 类岩石材料 锯齿形裂纹 应力强度因子 内张型滑动裂纹 外张型滑动裂纹 单翼滑动裂纹 |
| 修稿时间： | 2002年4月4日 |
ANALYSIS OF ZIGZAG CRACKS IN ROCK-LIKE MATERIALS UNDER COMPRESSION |
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| Li Yinping , Wang Yuanhan.ANALYSIS OF ZIGZAG CRACKS IN ROCK-LIKE MATERIALS UNDER COMPRESSION[J].Acta Mechnica Solida Sinica,2003,24(4):456-462. |
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| Authors: | Li Yinping Wang Yuanhan |
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| Affiliation: | Li Yinping 1,2 Wang Yuanhan1 |
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| Abstract: | Considering the complexity and inhomogeneity of rock-like materials,especially the presence of some interfaces of weak strength between mineral grains,an analysis on two type of zigzag cracks,namely,the inner-open silding crack(IOSC) and the single-wing sliding crack (SWSC),are presented.Compared with the classical sliding crack model,the influences on the SIFs due to the angle of wing crack with respect to the main crack,the length of wing crack and the presence of confining pressure are discussed in detail.The present model and results are expected to provide a basic for the further study on damage and fracture mechanism of rock-like materials.; |
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| Keywords: | rock-like materials zigzag crack stress intensity factors sliding crack model |
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