A 2D Cosserat finite element based on a damage-plastic model for brittle materials

被引：30
作者：
Addessi, Daniela [1 ]
机构：
[1] Univ Roma Sapienza, Dipartimento Ingn Strutturale & Geotecn, I-00184 Rome, Italy
来源：
COMPUTERS & STRUCTURES | 2014年 / 135卷
关键词：
Damage; Plasticity; Cosserat continuum; Finite element; NONLOCAL DAMAGE; CONCRETE; CONTINUUM; MASONRY; BEHAVIOR;
D O I：
10.1016/j.compstruc.2014.01.003
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
A 2D Cosserat model with a damage-plastic isotropic constitutive law for brittle-like materials is presented. Different damaging mechanisms in tension and compression are considered. The plastic flow is described by introducing a suitable yield function and evolution laws in terms of effective stresses. Small strain and displacement assumptions hold. A 4-node finite element is formulated with three degrees-of-freedom for each node and a predictor-corrector procedure is used to solve the damage-plastic evolutionary problem. The lateral response of walls under monotonic and cyclic horizontal actions is analyzed and a satisfactory description of the global response curves and damaging mechanisms is obtained. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：20 / 31
页数：12
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