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Author:

Lei, Jun (Lei, Jun.) (Scholars:雷钧) | Xu, Yanjie (Xu, Yanjie.) | Gu, Yan (Gu, Yan.) | Fan, Chia-Ming (Fan, Chia-Ming.)

Indexed by:

EI Scopus SCIE

Abstract:

This paper documents the first attempt to apply the generalized finite difference method (GFDM), a recently developed meshless method, for the numerical solution of problems with cracks in general anisotropic materials. To solve the resulting second-order elliptic partial differential equations with mixed boundary conditions, the explicit formulae for the partial derivatives of unknown functions in the equations are derived by using the Taylor series expansions combining with the moving-least squares approximation in this meshless GFD method. To deal with the strong discontinuous crack-faces, some special treatments are applied to modify this GFDM. The node distributions are locally refined in the vicinity of the crack-tips. By dividing the crack domain into two parts, the sub-domain method is also used for comparing with the single-domain method. The direct displacement extrapolation method, the path-independent J-integral and the interaction integral methods are, respectively, used to compute the stress intensity factors and compared. Finally, some classical crack examples are presented to show the effectiveness and accuracy of the proposed meshless method for crack problems.

Keyword:

Crack problems Anisotropic Meshless method Generalized finite difference method Stress intensity factors

Author Community:

  • [ 1 ] [Lei, Jun]Beijing Univ Technol, Dept Engn Mech, Beijing 100124, Peoples R China
  • [ 2 ] [Xu, Yanjie]Beijing Univ Technol, Dept Engn Mech, Beijing 100124, Peoples R China
  • [ 3 ] [Gu, Yan]Qingdao Univ, Sch Math & Stat, Qingdao 266071, Peoples R China
  • [ 4 ] [Fan, Chia-Ming]Natl Taiwan Ocean Univ, Dept Harbor & River Engn, Keelung 20224, Taiwan
  • [ 5 ] [Fan, Chia-Ming]Natl Taiwan Ocean Univ, Computat & Simulat Ctr, Keelung 20224, Taiwan
  • [ 6 ] [Fan, Chia-Ming]Natl Taiwan Ocean Univ, Ctr Excellence Ocean Engn, Keelung 20224, Taiwan

Reprint Author's Address:

  • 雷钧

    [Lei, Jun]Beijing Univ Technol, Dept Engn Mech, Beijing 100124, Peoples R China

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Source :

ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS

ISSN: 0955-7997

Year: 2019

Volume: 98

Page: 147-156

3 . 3 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:136

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 37

SCOPUS Cited Count: 37

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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