Proposal of new combination criterion for pipe with circumferential multiple cracks based on ductile failure simulation

Myeong Woo Lee, Kunio Hasegawa, Yun Jae Kim

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

In this paper, the combination rule for circumferential multiple-cracked pipe assessment is investigated using finite element damage analysis. The FE damage analysis based on the stress-modified fracture strain model is validated against limited fracture test data of two circumferential surface cracked pipes. Then systematic parametric study is performed using FE damage analysis for symmetrical surface cracked pipes. Failure bending stresses are calculated using the combination rule and the net-section collapse load approach for single crack provided in ASME BPV Code. It is found that predicted failure bending stress using the combination rule might be non-conservative when the distance between two cracks is short. To overcome the problem, a new combination criterion based on crack dimensions is proposed and compared with numerical data.

本文言語English
ホスト出版物のタイトルCodes and Standards
出版社American Society of Mechanical Engineers (ASME)
ISBN(電子版)9780791851586
DOI
出版ステータスPublished - 2018
外部発表はい
イベントASME 2018 Pressure Vessels and Piping Conference, PVP 2018 - Prague, Czech Republic
継続期間: 2018 7月 152018 7月 20

出版物シリーズ

名前American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
1A-2018
ISSN(印刷版)0277-027X

Conference

ConferenceASME 2018 Pressure Vessels and Piping Conference, PVP 2018
国/地域Czech Republic
CityPrague
Period18/7/1518/7/20

ASJC Scopus subject areas

  • 機械工学

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