| 含微裂纹岩石的损伤本构模型 |
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| 引用本文： | 李长春,陈良森,李光霞. 含微裂纹岩石的损伤本构模型[J]. 华中科技大学学报(自然科学版), 1990, 0(5) |
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| 作者姓名： | 李长春 陈良森 李光霞 |
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| 作者单位： | 华中理工大学力学系(李长春，陈良森)，华中理工大学力学系(李光霞) |
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| 摘 要： | 岩石中含有许多微裂纹和微空隙,其变形的非线性特征主要是由于这些微裂纹和微空隙闭合、张开和扩展的结果。本文根据损伤理论和有效模量法,考虑这些微缺陷的影响,建立损伤本构方程和损伤演变方程,并将其应用于根据岩石含空隙度不同所提出的三种模型。结果表明,理论曲线和实验曲线吻合。
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| 关 键 词： | 岩石 裂纹 损伤 本构模型 |
Damage Constitutive Models for Rocks with Micro-Cracks |
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| Li Changchun Chen Liangsen Li Guangxia. Damage Constitutive Models for Rocks with Micro-Cracks[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 1990, 0(5) |
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| Authors: | Li Changchun Chen Liangsen Li Guangxia |
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| Affiliation: | Li Changchun Chen Liangsen Li Guangxia |
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| Abstract: | In a rock there are a lot of microcracks and microvoids, whose closing, opening and growth bring about the nonlinearity of its deformation. By taking into account the effect of the micro-defects, a constitutive relation and damage evolution equations have been developed based on damage mechanics and with the effective modules method. These equations have been applied to three models proposed according to the different porosities of the rocks. The theoretical curves are in good agreement with experimental ones. |
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| Keywords: | Rock Cracks Damage Constitutive model |
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