Numerical study on fracture behavior of complex cracked pipes

Ho Wan Ryu, Jae Jun Han, Yun Jae Kim

研究成果: Conference contribution

抄録

This study provides the application of damage model to complex cracked pipes which can be found especially in weld overlay region. From the perspective of structural integrity, enough basic and large-scale tests are required to accurately evaluate the components containing a crack-like defect. In this case, damage model using finite element (FE) method can be effectively used for the assessment of full-scale cracked pipes with minimum basic experiments data. The proposed method in this research is based on the stress-modified fracture strain damage model with stress reduction technique. In this paper, Battelle full-scale complex cracked pipe tests are simulated by the proposed damage model with reasonable procedure. FE simulation is conducted for basic experiments to determine failure criteria with calibrations. Then, crack initiation and maximum loads are predicted to characterize the fracture behavior of full-scale complex cracked pipes. Damage model is applied to both of carbon and stainless steel materials and verification with comparing to test data is conducted.

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)9780791856994, 9780791856994, 9780791856994, 9780791856994
DOI
出版ステータスPublished - 2015 1 1
外部発表はい
イベントASME 2015 Pressure Vessels and Piping Conference, PVP 2015 - Boston, United States
継続期間: 2015 7 192015 7 23

出版物シリーズ

名前American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
6A-2015
ISSN(印刷版)0277-027X

Conference

ConferenceASME 2015 Pressure Vessels and Piping Conference, PVP 2015
CountryUnited States
CityBoston
Period15/7/1915/7/23

ASJC Scopus subject areas

  • Mechanical Engineering

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