Microplane constitutive model for porous isotropic rocks

被引:34
|
作者
Bazant, ZP [1 ]
Zi, GS [1 ]
机构
[1] Northwestern Univ, Dept Civil Engn, Evanston, IL 60208 USA
关键词
microplane model; porous rock; plasticity; fracturing; material modelling; finite elements;
D O I
10.1002/nag.261
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
The paper deals with constitutive modelling of contiguous rock located between rock joints. A fully explicit kinematically constrained microplane-type constitutive model for hardening and softening non-linear triaxial behaviour of isotropic porous rock is developed. The microplane framework, in which the constitutive relation is expressed in terms of stress and strain vectors rather than tensors, makes it possible to model various microstructural physical mechanisms associated with oriented internal surfaces, such as cracking, slip, friction and splitting of a particular orientation. Formulation of the constitutive relation is facilitated by the fact that it is decoupled from the tensorial invariance restrictions, which are satisfied automatically. In its basic features, the present model is similar to the recently developed microplane model M4 for concrete, but there are significant improvements and modifications. They include a realistic simulation of (1) the effects of pore collapse on the volume changes during triaxial loading and on the reduction of frictional strength, (2) recovery of frictional strength during shearing, and (3) the shear-enhanced compaction in triaxial tests, manifested by a deviation from the hydrostatic stress-strain curve. The model is calibrated by optimal fitting of extensive triaxial test data for Salem limestone, and good fits are demonstrated. Although these data do not cover the entire range of behaviour, credence in broad capabilities of the model is lend by its similarity to model M4 for concrete-an artificial rock. The model is intended for large explicit finite-element programs. Copyright (C) 2002 John Wiley Sons, Ltd.
引用
收藏
页码:25 / 47
页数:23
相关论文
共 50 条
  • [11] Hyperelastic anisotropic microplane constitutive model for annulus fibrosus
    Caner, Ferhun C.
    Guo, Zaoyang
    Moran, Brian
    Bazant, Zdenek P.
    Carol, Ignacio
    JOURNAL OF BIOMECHANICAL ENGINEERING-TRANSACTIONS OF THE ASME, 2007, 129 (05): : 632 - 641
  • [12] Elastic-plastic microplane constitutive model of concrete
    Jia, Ming-Xiao
    Zhendong yu Chongji/Journal of Vibration and Shock, 2012, 31 (10): : 123 - 127
  • [13] A homogenization-based constitutive model for isotropic viscoplastic porous media
    Danas, K.
    Idiart, M. I.
    Castaneda, P. Ponte
    INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 2008, 45 (11-12) : 3392 - 3409
  • [14] Microplane constitutive model and computational framework for blood vessel tissue
    Caner, Ferhun C.
    Carol, Ignacio
    JOURNAL OF BIOMECHANICAL ENGINEERING-TRANSACTIONS OF THE ASME, 2006, 128 (03): : 419 - 427
  • [15] A NEW CONCEPT OF CONCRETE CONSTITUTIVE MODEL: THE FRACTAL-MICROPLANE MODEL
    Wu, Hanliang
    Wang, Yuanfeng
    PROCEEDINGS OF THE TWELFTH INTERNATIONAL SYMPOSIUM ON STRUCTURAL ENGINEERING, VOLS I AND II, 2012, : 1286 - 1291
  • [16] Numerical implementation of the microplane constitutive model for shape memory alloys
    Karamooz-Ravari, M. R.
    Shahriari, B.
    PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS, 2019, 233 (06) : 1117 - 1133
  • [17] Short- and long-term constitutive model for porous rocks
    Grgic, D.
    Homand, F.
    Hoxha, D.
    EUROCK 2006 MULTIPHYSICS COUPLING AND LONG TERM BEHAVIOUR IN ROCK MECHANICS, 2006, : 281 - +
  • [18] AN IMPROVED METHOD TO CALCULATE THE DIRECTION AND WEIGHT IN MICROPLANE CONSTITUTIVE MODEL
    Wei, Cheng
    Jia, Ming-Xiao
    Wang, Jun-Jie
    PROCEEDINGS OF THE ELEVENTH INTERNATIONAL SYMPOSIUM ON STRUCTURAL ENGINEERING, VOL I AND II, 2010, : 1691 - 1699
  • [19] Microplane model of cylindrical geometry for transversely isotropic polymer composites
    Sabounchi, Saeed
    Caner, Ferhun C.
    COMPUTERS & STRUCTURES, 2022, 268
  • [20] CONSTITUTIVE MODEL FOR ROCKS
    DESAI, CS
    SALAMI, MR
    JOURNAL OF GEOTECHNICAL ENGINEERING-ASCE, 1987, 113 (05): : 407 - 423