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Author:

Du, Xianhe (Du, Xianhe.) | Dai, Yanwei (Dai, Yanwei.) (Scholars:代岩伟) | Han, Qiang (Han, Qiang.) (Scholars:韩强) | Liu, Yinghua (Liu, Yinghua.) | Cao, Peng (Cao, Peng.) | Qian, Guian (Qian, Guian.) | Berto, Filippo (Berto, Filippo.)

Indexed by:

EI Scopus SCIE

Abstract:

In a fracture analysis at elevated temperature, the determination of fracture parameter C* under steady-state creep is a crucial point. This paper proposes a rate-dependent energy release rate 6, by analogy with the definition of creep fracture parameter C* under steady-state creep. The relationship between <(G)over dot> and C* is deduced after a brief review of the definitions of parameters in fracture mechanics. Aimed at calculating <(G)over dot> and C*, a finite element formulation based on the virtual crack closure technique (VCCT) is established, which is called the extended VCCT in this paper. The numerical algorithm for this proposed formulation is presented and implemented into commercial finite element codes. The results obtained by the proposed numerical method are compared with those by finite element contour integral method and from different engineering estimation methods for SENT, MT and CT specimens. Good agreements of the C* results show that the extended VCCT is a reliable and efficient numerical method to calculate C* under steady-state creep.

Keyword:

Power-law creep C*-integral Equivalent domain integral Virtual crack closure technique (VCCT) Energy release rate

Author Community:

  • [ 1 ] [Cao, Peng]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China
  • [ 2 ] [Du, Xianhe]South China Univ Technol, Sch Civil Engn & Transportat, Guangzhou 510641, Peoples R China
  • [ 3 ] [Han, Qiang]South China Univ Technol, Sch Civil Engn & Transportat, Guangzhou 510641, Peoples R China
  • [ 4 ] [Du, Xianhe]Tsinghua Univ, Dept Engn Mech, AML, Beijing 100084, Peoples R China
  • [ 5 ] [Liu, Yinghua]Tsinghua Univ, Dept Engn Mech, AML, Beijing 100084, Peoples R China
  • [ 6 ] [Dai, Yanwei]Beijing Univ Technol, Inst Elect Packaging Technol & Reliabil, Beijing 100124, Peoples R China
  • [ 7 ] [Qian, Guian]Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China
  • [ 8 ] [Qian, Guian]Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
  • [ 9 ] [Berto, Filippo]Norwegian Univ Sci & Technol NTNU, Dept Mech & Ind Engn, Richard Birkelands Vei 2b, N-7491 Trondheim, Norway

Reprint Author's Address:

  • [Cao, Peng]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China;;[Qian, Guian]Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China;;[Qian, Guian]Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China

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Source :

THEORETICAL AND APPLIED FRACTURE MECHANICS

ISSN: 0167-8442

Year: 2020

Volume: 109

5 . 3 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:115

Cited Count:

WoS CC Cited Count: 2

SCOPUS Cited Count: 1

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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