Dynamic simulation technology for crack extension process

CHEN Wei-zhong; CHEN Pei-shuai; WANG Hui

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Dynamic simulation technology for crack extension process

更新时间：2026-06-25

- Dynamic simulation technology for crack extension process
- Vol. 32, Issue S2, (2011)
- 作者机构：
  
  1. ．山东大学岩土与结构工程研究中心,济南,250061
  2. ．中国科学院武汉岩土力学研究所,武汉,430071
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU4452
- Online First：26 August 2011，
  
  Published：2011
- 稿件说明：
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CHEN Wei-zhong, CHEN Pei-shuai, WANG Hui. Dynamic simulation technology for crack extension process[J]. 2011, 32(S2).
DOI：

CHEN Wei-zhong, CHEN Pei-shuai, WANG Hui. Dynamic simulation technology for crack extension process[J]. 2011, 32(S2). DOI：

摘要

岩石断裂力学在岩土工程领域应用越来越广泛，其数值模拟技术是研究的主要方向之一，也是制约断裂力学发展的瓶颈。基于扩展有限元思想，依托ABAQUS用户子单元二次开发技术，引入Heaviside函数模拟不连续位移场，采用裂尖逼近函数模拟裂尖位移场，通过J积分求解裂尖的应力强度因子（SIF），最后采用最大周向应力准则，预测裂纹扩展方向，实现了裂纹动态演化过程的扩展有限元数值模拟。通过3个经典断裂力学模型，对比了计算值与理论值，验证了所开发程序的适用性和有效性

Abstract

Rock fracture mechanics is used widely in geotechnical engineering . Fracture’s simulation technology is one of the main directions of research; but also a bottleneck restricts the development of fracture mechanics. This problem can be solved relying on the secondary development of ABAQUS. It is based on the extended finite element idea. It is possible to simulate the discontinuous displacement field through the introduction of Heaviside function. Also the crack tip displacement field can be simulated by introducting crack tip approximation function. Then it is easy to solve stress intensity factor (SIF) by J integral. Finally

crack growth direction is predicted by using the max circumferential stress criterion. Through three classic models of fracture mechanics

it is easy to verify the feasibility and accuracy of this method by comparing the calculated values with the theoretical values.

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