FM-DBEM Simulation of 3D Microvoid and Microcrack Graphite Models

被引：0

作者：

Lu, Houdi ^{[1
]}

Wang, Hongtao ^{[1
]}

Wang, Haitao ^{[1
]}

Jin, Lie ^{[1
]}

Wu, Xinxin ^{[1
]}

Zhou, Yu ^{[1
]}

机构：

[1] Tsinghua Univ, Inst Nucl & New Energy Technol, Collaborat Innovat Ctr Adv Nucl Energy Technol, Key Lab Adv Reactor Engn & Safety,Minist Educ, Beijing 100084, Peoples R China

来源：

SCIENCE AND TECHNOLOGY OF NUCLEAR INSTALLATIONS | 2017年 / 2017卷

基金：

中国国家自然科学基金;

关键词：

BOUNDARY-ELEMENT METHOD; FRACTURE-MECHANICS ANALYSIS; SPECIAL FINITE-ELEMENTS; CRACK PROBLEMS; REINFORCED COMPOSITES; CIRCULAR-HOLE; ELASTICITY; PROPAGATION; FORMULATION; INCLUSION;

D O I：

10.1155/2017/1071709

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The graphite is porous medium, and the geometry and size distribution of its structural deficiencies such as microcracks and microvoids at different oxidation degrees have a great influence on the overall performance. In this paper, we adopt the FM-DBEM to study 3D models which contain spheroidal microvoids and circular microcracks. The accuracy of this method is tested by a comparison to the theoretical solution to the problem of 2D microcrack and microvoid interaction problem. Two simulations are conducted: the simulation of graphite model containing a large number of randomly distributed microcracks and microvoids and the simulation of graphite model containing microcracks and growing microvoids. The simulations investigate the effective moduli versus the two microstructures' density and the effect of microvoid's growth on the SIF of microcrack.

引用

页数：14

共 46 条

[1] INTERACTION BETWEEN A CRACK AND AN INCLUSION [J].