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3D adaptive finite element modeling of non-planar curved crack growth using the weighted superconvergent patch recovery method

Moslemi, H ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1016/j.engfracmech.2009.03.013
  3. Publisher: 2009
  4. Abstract:
  5. In this paper, an adaptive finite element analysis is presented for 3D modeling of non-planar curved crack growth. The fracture mechanical evaluation is performed based on a general technique for non-planar curved cracks. The Schollmann's crack kinking criterion is used for the process of crack propagation in 3D problems. The Zienkiewicz-Zhu error estimator is employed in conjunction with a weighted SPR technique at each patch to improve the accuracy of error estimation. Applying the proposed technique to 3D non-planar curved crack growth problems shows significant improvements particularly at the boundaries and near crack tip regions. Several numerical examples are presented to illustrate the robustness of the proposed technique. © 2009 Elsevier Ltd. All rights reserved
  6. Keywords:
  7. 3D curved crack growth ; Fracture mechanics ; Stress intensity factor ; Weighted SPR technique ; 3-d modeling ; 3-D problems ; 3D curved crack growth ; Adaptive finite element ; Adaptive finite element analysis ; Adaptive mesh refinement ; Crack kinking ; Curved crack ; Error estimations ; Error estimators ; Fracture-mechanical evaluation ; Numerical example ; Superconvergent patch recovery methods ; Asphalt pavements ; Crack propagation ; Crack tips ; Cracking (chemical) ; Error analysis ; Finite element method ; Mechanics ; Strength of materials ; Stress intensity factors ; Surface plasmon resonance ; Three dimensional
  8. Source: Engineering Fracture Mechanics ; Volume 76, Issue 11 , 2009 , Pages 1703-1728 ; 00137944 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0013794409000861