| 岩土材料弹塑性正交异性损伤耦合本构理论 |
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| 引用本文： | 沈新普,徐秉业.岩土材料弹塑性正交异性损伤耦合本构理论[J].应用数学和力学,2001,22(9):927-933. |
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| 作者姓名： | 沈新普 徐秉业 |
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| 作者单位： | 沈阳工业大学建筑工程系沈阳 110023 |
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| 基金项目： | 国家教育部留学归国人员科研启动基金资助课题(1999
363) |
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| 摘 要： | 在不可逆热力学框架内建立了岩土材料的正交异性损伤塑性耦合宏观唯象本构理论。主要结果有：1）给出了耦合的塑性和损伤的演化律；2）从对含裂纹单元的细观分析入手，通过均匀化（Homogenization）处理，将损伤引入到Mohr-Coulomb条件下，模型同时考虑了损伤对剪切强度及摩擦角的影响，扩容现象则通过损伤应变来计算。
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| 关 键 词： | 损伤 塑性 耦合 岩土材料 弹塑性 正交异性 本构理论 |
| 文章编号： | 10000887(2001)09092707 |
| 修稿时间： | 2000年8月19日 |
Constitutive Theory of Plasticity Coupled With Orthotropic Damage for
Geomaterials |
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| SHEN Xin_pu ,Zenon Mroz ,XU Bing_ye.Constitutive Theory of Plasticity Coupled With Orthotropic Damage for
Geomaterials[J].Applied Mathematics and Mechanics,2001,22(9):927-933. |
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| Authors: | SHEN Xin_pu Zenon Mroz XU Bing_ye |
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| Institution: | SHEN Xin_pu 1,Zenon Mroz 2,XU Bing_ye 3 |
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| Abstract: | Constitutive theory of plasticity coupled with orthotropic damage for geomaterials was established in the framework of irreversible thermodynamics. Prime results include: 1) evolution laws are presented for coupled evolution of plasticity and orthotropic damage; 2) the orthotropic damage tensor is introduced into the Mohr_Coulomb criterion through homogenization. Both the degradation of shear strength and degradation of friction angle caused by damage are included in this model. The dilatancy is calculated with the so_called damage strain. |
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| Keywords: | damage plasticity coupling dilatancy geomaterial |
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