A discrete approach for modeling damage and failure in anisotropic cohesive brittle materials
A discrete approach for modeling damage and failure in anisotropic cohesive brittle materials
复制标题
各向异性粘性脆性材料损伤和失效建模的离散方法
DOI：
10.1016/j.engfracmech.2016.01.012
复制
发表时间：
2016-04
影响因子：
5.4
通讯作者：
CB Zhou
中科院分区：
文献类型：
--
作者：
C Yao;QH Jiang;JF Shao;CB Zhou
本文提出了各向异性粘性脆性材料损伤和失效的数值研究。提出了一种扩展刚性块弹簧法（RBSM）。脆性材料的代表性单元体积 (REV) 的特征是刚性块的各向异性 Voronoi 组装。宏观力学行为与块体之间界面的变形和破坏有关。每个界面的机械行为通过其弹性刚度、拉伸强度和剪切强度来描述。界面的局部弹性刚度可以与材料的宏观弹性特性相关。考虑了接口的两种失效过程。当法向应力达到拉伸强度时，就会发生拉伸破坏。剪切破坏通过局部法向应力和剪切应力的非线性准则来描述。该方法适用于表现出横观各向同性行为的典型粘土岩。给出了数值模拟并与实验数据进行了比较。
This paper presents a numerical study of damage and failure in anisotropic cohesive brittle materials. An extended rigid block spring method (RBSM) is proposed. The representative elementary volume (REV) of brittle materials is characterized by an anisotropic Voronoi assembly of rigid blocks. The macroscopic mechanical behavior is related to the deformation and failure of interfaces between blocks. The mechanical behavior of each interface is described by its elastic stiffness, tensile strength and shear strength. The local elastic stiffness of interface can be related to the macroscopic elastic properties of material. Two failure processes of interface are considered. The tensile failure occurs when the normal stress reaches the tensile strength. The shear failure is described by a nonlinear criterion in terms of the local normal and shear stresses. The proposed method is applied to a typical clayey rock which exhibits a transversely isotropic behavior. Numerical simulations are presented and compared with experimental data.
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影响因子：
1.1
作者：
FORTUNE, S
通讯作者：
FORTUNE, S
影响因子：
2
作者：
K. Nagai;Yasuhiko Sato;T. Ueda
通讯作者：
K. Nagai;Yasuhiko Sato;T. Ueda
影响因子：
5.3
作者：
Scholtes, Luc;Donze, Frederic-Victor;Khanal, Manoj
通讯作者：
Khanal, Manoj
DOI：
10.1016/j.ijrmms.2012.01.001
发表时间：
2012-04
影响因子：
7.2
作者：
S. Hedan;P. Cosenza;V. Valle;Patrick Dudoignon;A. Fauchille;J. Cabrera
通讯作者：
S. Hedan;P. Cosenza;V. Valle;Patrick Dudoignon;A. Fauchille;J. Cabrera
影响因子：
3.3
作者：
Hentz, S;Daudeville, L;Donzé, FV
通讯作者：
Donzé, FV