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作者:

Cui, Hao (Cui, Hao.) | Li, Chunguang (Li, Chunguang.) | Zheng, Hong (Zheng, Hong.) (学者:郑宏)

收录:

EI SCIE

摘要:

A weak form of the peridynamic (PD) method derived from the classical Galerkin framework by substituting the traditional derivatives into the PD differential operators is proposed. The attractive features of the proposed weak form of PD method include the following: (1) a higher-order approximation than the non-ordinary state-based peridynamic (NOSB-PD) in the strain construction; (2) the NOSB-PD is demonstrated as a special case of the weak form of the PD method; (3) as an extension of the NOSB-PD, the zero-energy mode oscillations in the weak form of the PD can be significantly reduced by introducing higher-order PD derivatives. In addition, a series of numerical tests are conducted. The results show the following: (1) the three proposed stabilization items containing higher-order PD derivatives have a better accuracy and stability than the traditional items of the NOSB-PD. In particular, the stress point stabilization item is preferred since it has the highest accuracy and efficiency and does not introduce any additional parameters; (2) the weak form of PD method is very suitable in dealing with the crack propagation and bifurcation problems.

关键词:

crack propagation nodal integration Peridynamics

作者机构:

  • [ 1 ] [Cui, Hao]Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
  • [ 2 ] [Li, Chunguang]Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
  • [ 3 ] [Cui, Hao]Univ Chinese Acad Sci, Dept Engn Sci, Beijing, Peoples R China
  • [ 4 ] [Zheng, Hong]Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing, Peoples R China

通讯作者信息:

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

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来源 :

MATHEMATICS AND MECHANICS OF SOLIDS

ISSN: 1081-2865

年份: 2020

期: 8

卷: 25

页码: 1544-1567

2 . 6 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:28

JCR分区:2

被引次数:

WoS核心集被引频次: 4

SCOPUS被引频次: 4

ESI高被引论文在榜: 0 展开所有

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