Element size dependent damage modeling of ductile crack growth in circumferential through-wall cracked pipe tests

Jong Hyun Kim, Nak Hyun Kim, Yun Jae Kim, Do Jun Shim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This paper proposes an element-size-dependent damage model to simulate ductile crack growth in full-scale cracked pipes. The proposed method is based on the stress-modified fracture strain damage model modified from stress reduction technique proposed previously by the authors. A modification is made that the critical accumulated damage for progressive cracking is assumed to be dependent on the element size. The proposed method is then compared with a circumferential through-wall cracked pipe test that was conducted during Degrade Piping Program[18]. The bending moment at crack initiation, maximum bending moment, crack extension, and J-integral values were calculated from the FE damage analysis. These results were compared with the experimental results. In addition, results obtained from an existing J-estimation scheme were provided for comparison. All results showed reasonable agreement. The results of the present study demonstrate that the element-size-dependent damage modeling can be applied to simulate the ductile crack growth behavior of a through-wall cracked pipe.

Original languageEnglish
Title of host publicationASME 2012 Pressure Vessels and Piping Conference, PVP 2012
Pages393-399
Number of pages7
DOIs
Publication statusPublished - 2012 Dec 1
EventASME 2012 Pressure Vessels and Piping Conference, PVP 2012 - Toronto, ON, Canada
Duration: 2012 Jul 152012 Jul 19

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume3
ISSN (Print)0277-027X

Conference

ConferenceASME 2012 Pressure Vessels and Piping Conference, PVP 2012
CountryCanada
CityToronto, ON
Period12/7/1512/7/19

ASJC Scopus subject areas

  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Element size dependent damage modeling of ductile crack growth in circumferential through-wall cracked pipe tests'. Together they form a unique fingerprint.

  • Cite this

    Kim, J. H., Kim, N. H., Kim, Y. J., & Shim, D. J. (2012). Element size dependent damage modeling of ductile crack growth in circumferential through-wall cracked pipe tests. In ASME 2012 Pressure Vessels and Piping Conference, PVP 2012 (pp. 393-399). (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 3). https://doi.org/10.1115/PVP2012-78277