3-D numerical of simulation of concrete failure process based on dynamic damage

被引：0

作者：

Zhou, Shangzhi ^{[1
]}

Guo, Xiaoping ^{[1
]}

Xiao, Shengcai ^{[1
]}

机构：

[1] Changsha Univ Sci & Technol, Sch Civil Engn & Architecture, Changsha 410114, Hunan, Peoples R China

来源：

STRUCTURAL INTEGRITY AND MATERIALS AGEING IN EXTREME CONDITIONS | 2010年

关键词：

Concrete; 3-D model; Dynamic damage; Damage evolvement; BP Artificial Neural Network;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In this paper, the distortion, damage and failure of concrete combined computation-mechanics and damage-mechanics are researched. Based on meso-mechanics, the concrete is simplified to be three-phase composites consisting of aggregate, mortar and bond. Based on 3-D random distribution of concrete aggregate FEM grid model, the decrease of elastic damage of concrete is described by the conduplicate-line damage evolvement model based on elastic damage constitutive relation. The degree of damage of concrete specimen is reflected by the degree of decreasing of elastic-modulus. Then,3-D numerical model of the cylinder specimen is calculated. So the crack propagation; coalescence and failure of concrete are evaluated with respect to damage.

引用

页码：205 / 211

页数：7

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