Modelling dynamic crack propagation using the scaled boundary finite element method

被引：69
|
作者：
Ooi, E. T. [1 ]
Yang, Z. J. [1 ]
机构：
[1] Univ Liverpool, Sch Engn, Liverpool L69 3GQ, Merseyside, England
来源：
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING | 2011年 / 88卷 / 04期
基金：
英国工程与自然科学研究理事会;
关键词：
scaled boundary finite element method; dynamic crack propagation; stress intensity factors; crack arrest; remeshing; fracture; FREQUENCY-DOMAIN APPROACH; STRESS-INTENSITY FACTORS; TIME-DOMAIN; COUPLED METHOD; PREDICTION; FORMULATION; GENERATION; ENRICHMENT; FIELDS; GROWTH;
D O I：
10.1002/nme.3177
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study presents a novel application of the scaled boundary finite element method (SBFEM) to model dynamic crack propagation problems. Accurate dynamic stress intensity factors are extracted directly from the semi-analytical solutions of SBFEM. They are then used in the dynamic fracture criteria to determine the crack-tip position, velocity and propagation direction. A simple, yet flexible remeshing algorithm is used to accommodate crack propagation. Three dynamic crack propagation problems that include mode-I and mix-mode fracture are modelled. The results show good agreement with experimental and numerical results available in the literature. It is found that the developed method offers some advantages over conventional FEM in terms of accuracy, efficiency and ease of implementation. Copyright (C) 2011 John Wiley & Sons, Ltd.
引用
收藏
页码：329 / 349
页数：21
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