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Author:

Yang, Yongtao (Yang, Yongtao.) | Sun, Guanhua (Sun, Guanhua.) | Zheng, Hong (Zheng, Hong.) (Scholars:郑宏) | Fu, Xiaodong (Fu, Xiaodong.)

Indexed by:

EI Scopus SCIE

Abstract:

Formulations of a four-node quadrilateral element fitted to numerical manifold method (NMM) with continuous nodal stress called Quad4-CNS (NMM) element for two-dimensional (2D) crack analysis are presented. This Quad4-CNS (NMM) element can be considered as a development of the recently published four-node quadrilateral element with continuous nodal stress (Quad4-CNS). In contrast to the four node iso-parametric quadrilateral element (Quad4), the Quad4-CNS element has higher order of global approximations, much better accuracy and continuous nodal stress. Moreover, it is free from the "linear dependence" which otherwise cripples many of the partition of unity (PU) based methods with high order global approximations. Due to the adoption of two cover systems, namely, the mathematical cover and physical cover, the NMM is capable of solving continuous and discontinuous problems in a unified way. The purpose of this paper is to synergize the advantages of both the Quad4-CNS element and the NMM to precisely model linear elastic fracture problems. A number of numerical examples indicate the accuracy and robustness of the present Quad4-CNS (NMM) element. (C) 2016 Elsevier Ltd. All rights reserved.

Keyword:

Quad4-CNS(NMM) element Stress intensity factor Continuous nodal stress Crack propagation Numerical manifold method

Author Community:

  • [ 1 ] [Yang, Yongtao]Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
  • [ 2 ] [Sun, Guanhua]Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
  • [ 3 ] [Fu, Xiaodong]Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
  • [ 4 ] [Zheng, Hong]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China

Reprint Author's Address:

  • [Sun, Guanhua]Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China

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Source :

COMPUTERS & STRUCTURES

ISSN: 0045-7949

Year: 2016

Volume: 177

Page: 69-82

4 . 7 0 0

JCR@2022

ESI Discipline: COMPUTER SCIENCE;

ESI HC Threshold:167

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 67

SCOPUS Cited Count: 67

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 5

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