Paper Title:
EFG Virtual Crack Closure Technique for the Determination of Stress Intensity Factor
  Abstract

The aim of this paper is to introduce a virtual crack closure technique based on EFG method for thread-shape crack. The cracked component is discretized and the displacement field is determined using a coupled FE/EFG method, by which EFG nodes are arranged in the vicinity of crack tip and FE elements in the remain part in order to improve computational efficiency. Two typical parameters, nodal force and crack opening displacement attached to crack tip are calculated by means of setting up an auxiliary FE zone around crack tip. Strain energy release rate (SERR), further stress intensity factor (SIF) are determined by the two parameters. The method to calculate SIF is named as virtual crack closure technique based on EFG method. It is showed by several numerical examples that using the method presented in this paper, SIF on the crack tip can be obtained accurately.

  Info
Periodical
Advanced Materials Research (Volumes 250-253)
Edited by
Guangfan Li, Yong Huang and Chaohe Chen
Pages
3752-3758
DOI
10.4028/www.scientific.net/AMR.250-253.3752
Citation
X. P. Chang, J. Liu, S. R. Li, "EFG Virtual Crack Closure Technique for the Determination of Stress Intensity Factor", Advanced Materials Research, Vols. 250-253, pp. 3752-3758, 2011
Online since
May 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Masanori Kikuchi, Yoshitaka Wada, Masafumi Takahashi, Yu Long Li
Abstract:Fatigue crack growth under mixed mode loading conditions is simulated using S-FEM. By using S-FEM technique, only local mesh should be...
133
Authors: F. Ricci, F. Franco, Nicola Montefusco
Abstract:In this paper, the mechanisms of propagation of the damage in aluminum panels repaired with bonded composite patches of different mechanical...
597
Authors: Yan Hua Zhao, Hua Zhang, Wei Dong
Abstract:The wedge splitting (WS) test is now a promising method to perform stable fracture mechanics tests on concrete-like quasi brittle materials....
425
Authors: Hui Hua Zhang, Jia Xiang Yan
Chapter 4: Applied Mechanics and Other Topics
Abstract:The numerical manifold method (NMM) is a representative among different numerical methods for crack problems. Due to the independence of...
1093