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Modeling of crack propagation via an automatic adaptive mesh refinement based on modified superconvergent patch recovery technique
Khoei, A. R ; Sharif University of Technology | 2008
408
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- Type of Document: Article
- DOI: 10.1016/j.engfracmech.2008.01.006
- Publisher: 2008
- Abstract:
- In this paper, an automated adaptive remeshing procedure is presented for simulation of arbitrary shape crack growth in a 2D finite element mesh. The Zienkiewicz-Zhu error estimator is employed in conjunction with a modified SPR technique based on the recovery of gradients using analytical crack-tip fields in order to obtain more accurate estimation of errors. The optimization of crack-tip singular finite element size is achieved through the adaptive mesh strategy. Finally, several numerical examples are illustrated to demonstrate the effectiveness, robustness and accuracy of computational algorithm in calculation of fracture parameters and prediction of crack path pattern. © 2008 Elsevier Ltd. All rights reserved
- Keywords:
- Computation theory ; Crack tips ; Fracture ; Optimization ; Mesh refinement ; Superconvergent patch recovery technique ; Crack propagation ; Error analysis ; Finite element method ; Mesh generation
- Source: Engineering Fracture Mechanics ; Volume 75, Issue 10 , 2008 , Pages 2921-2945 ; 00137944 (ISSN)
- URL: https://www.sciencedirect.com/science/article/abs/pii/S0013794408000155