期刊论文

Zhang, Jianming

英文

Acta Mechanica

0001-5970

2020

231

2

733-741

10.1007/s00707-019-02573-x

This work was supported in part by National Natural Science Foundation of China under Grant Numbers 11602229, 11602082, 11772125 and 11902141, in part by Opening Project of Cooperative Innovation Center for Nuclear Fuel Cycle Technology and Equipment, University of South China under Grant Number 2019KFQ07, in part by Key Scientific and Technological Project of Henan Province under Grant Number 192102210227. Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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Accurate computation of stress intensity factors for two-dimensional cracks by a dual interpolation boundary face method (DiBFM) is presented in this paper. Dual interpolation method combines traditional element polynomial interpolation and moving least-squares approximation. Dual interpolation elements are obtained by adding virtual nodes on the boundary of traditional discontinuous elements, and they unify traditional continuous and discontinuous elements. With the dual interpolation elements, both the continuous and discontinuous fields can be approximated, and the accuracy of interpolation...