岩土材料弹塑性正交异性损伤耦合本构理论

沈新普; 泽农·慕容子; 徐秉业

岩土材料弹塑性正交异性损伤耦合本构理论

1.
沈阳工业大学建筑工程系, 沈阳110023;
2.
波兰科学院基础技术所, 波兰华沙;
3.
清华大学工程力学系, 北京100084

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(1999363)

详细信息

作者简介:
沈新普(1963- ),男,河北清河人,教授,博士.

中图分类号: O342
计量
- 文章访问数: 1925
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- 被引次数: 0
出版历程
- 收稿日期: 2000-08-19
- 修回日期: 2001-04-08
- 刊出日期: 2001-09-15

Constitutive Theory of Plasticity Coupled With Orthotropic Damage for Geomaterials

1.
Department of Architectural Engineering, Shenyang University of Technology, Shenyang 110023, P R China;
2.
IFTR, Polish Academy of Sciences, Warsaw 00-049, Poland;
3.
Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P R China

摘要

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条件中。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。
- 损伤 /
- 塑性 /
- 耦合 /
- 扩容 /
- 岩土材料
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 isintroduced 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.
- damage /
- plasticity /
- coupling /
- dilatancy /
- geomaterial

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参考文献(14)

[1]	Lemaitre J. A Course on Damage Mechanics. 2nd ed[M]. Berlin: Springer, 1990.
[2]	Hansen N R,Schreyer H L. A thermodynamically consistent framework for theories of elastoplasticity coupled with damage [J]. Int J Solids Structures, 1994, 31(2):359-389.
[3]	Hayakawa K,Murakami S. Thermodynamic modeling of elastic-plastic damage and experimental validation of damage potential [J]. Int J Dama Mech, 1997, 6(2):333-363.
[4]	Mariotti de Sciarra F. A new variational theory and a computational algorithm for coupled elastoplastic damage models [J]. Int J Solids Structures, 1997, 34(9):1761-1796.
[5]	Basista M,Gross D. The sliding crack model of brittle deformation: an internal variable approach [J]. Int J Solids Structures, 1998, 35(3): 487-509.
[6]	Dragon A,Halm D. A mesocrack damage and friction coupled model for brittle materials [A]. In: Voyiadjis G Z, Ju J W, Chaboche J L Eds. Damage Mechanics in Engineering Materials[C]. Amsterdam: Elsevier Science, 1998, 321-336.
[7]	Meschke G, Lackner R,Mang H A. An anisotropic elastoplastic-damage model for plain concrete [J]. Int J Numer Mech Engng, 1998, 42(3): 703-727.
[8]	Yazdani S,Karnawat S. A constitutive theory for brittle solids with application to concrete [J]. Int J Dama Mech, 1996, 5(1): 93-110.
[9]	Vutukuri V S, Lama R D, Saluja S S. Handbook on Mechanical Properties of Rocks[M]. Vol.1. Berlin: Trans Tech Publisher, 1974.
[10]	Duveau G, Shao J F. A modified single plane of weakness theory for the failure of highly stratified rocks [J]. Int J Rock Mech Min Sci, 1998, 35(6): 807-813.
[11]	Hoek E,Brown E T. Practical estimation of rock mass strength [J]. Int J Rock Mech Min Sci, 1997, 34(8), 1165-1186.
[12]	Muller D, Kratochvil J,Berveiller M. Nonlocal versus local elastoplastic behavior of heterogeneous materials [J]. Int J Plasticity, 1993, 9(3): 633-645.
[13]	Rice J R. Inelastic constitutive relations for solids: an internal variable theory and its applicatin to metal plasticity [J]. J Mech Phys Solids,1971, 19(2): 433-455.
[14]	Swoboda G, Shen X P, Rosas L. Damage model for jointed rock mass and its application to tunneling [J]. Computer and Geotechnics, 1998, 22(3/4): 183-203.