Ductile tearing simulation of circumferential cracked pipe under cyclic loading using damage criteria determined by monotonic pipe test data

Jin Ha Hwang, Naoki Miura, Gyo Geun Youn, Yun Jae Kim

研究成果: Conference contribution

抄録

To evaluate the structural integrity of nuclear power plant piping, it is important to predict ductile tearing of circumferential cracked pipe from the view point of Leak-Before-Break concept under seismic conditions. CRIEPI (Central Research Institute of Electric Power Industry) conducted fracture test on Japanese carbon steel (STS410) circumferential through-wall cracked pipes under monotonic or cyclic bending load in room temperature. Cyclic loading test conducted variable experimental conditions considering effect of stress ratio and amplitude. In the previous study, monotonic fracture pipe test was simulated by modified stress-strain ductile damage model determined by C(T) specimen fracture toughness test. And, ductile fracture of pipe under cyclic loading simulated using damage criteria based on fracture strain energy from C(T) specimen test data. In this study, monotonic pipe test result is applied to determination of damage model based on fracture strain energy, using finite element analysis, without C(T) specimen fracture toughness test. Ductile fracture of pipe under variable cyclic loading conditions simulates using determined fracture energy damage model from monotonic pipe test.

本文言語English
ホスト出版物のタイトルMaterials and Fabrication
出版社American Society of Mechanical Engineers (ASME)
ISBN(電子版)9780791851678
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
6A-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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