| 考虑孔隙变形的孔隙介质本构关系初探 |
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| 引用本文： | 邵龙潭,孙益振.考虑孔隙变形的孔隙介质本构关系初探[J].岩土力学,2006,27(4):561-565. |
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| 作者姓名： | 邵龙潭 孙益振 |
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| 作者单位： | 大连理工大学 工程力学系工业装备结构分析国家重点实验室，大连 116024 |
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| 基金项目： | 教育部高校骨干教师资助计划;教育部留学回国人员科研启动基金 |
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| 摘 要： | 孔隙存在是孔隙介质材料结构的本质特征，它决定了孔隙介质的本构关系呈现更为复杂的性质。首先给出了孔隙介质的视应力、视应变、骨架实际应力和骨架实际应变的定义，并在理想孔隙介质的物质模型假定下讨论了理想孔隙介质的本构关系，表明即使孔隙介质的骨架结构满足虎克弹性体本构关系的假定，即假定骨架的实际应力与实际应变之间呈现线性关系，但由于孔隙的存在，孔隙介质的视应力与视应变之间还是呈现非线性，说明应力与变形之间的非线性是孔隙介质的固有特性。
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| 关 键 词： | 孔隙介质 实际应力 实际应变 视应力 视应变 本构关系 |
| 文章编号： | 1000-7598-（2006）04-0561-05 |
| 收稿时间： | 2004-08-30 |
| 修稿时间： | 2004-12-03 |
Primary study of stress-strain constitutive relation for porous media |
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| SHAO Long-tan,SUN Yi-zhen.Primary study of stress-strain constitutive relation for porous media[J].Rock and Soil Mechanics,2006,27(4):561-565. |
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| Authors: | SHAO Long-tan SUN Yi-zhen |
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| Institution: | Stake Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | The existing of voids is the character of the porous media, which determine the constitution relation of porous media will be more complicated. A model of ideal porous media is presented. The apparent stress and apparent strain, actual stress and actual strain of skeleton for porous medium are defined. A discussion of the stress-strain relationship of the ideal porous medium suggests that although skeleton structure could be satisfied with the hypothesis of stress-strain linear elastic, the relationship between apparent stress and apparent strains remains nonlinear character. The nonlinear relation of stress and strain is the character of porous media. |
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| Keywords: | porous media actual stress actual strain apparent stress apparent strain constitutive relation |
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