Numerical study on longitudinal distance effect on failure stress of non-aligned twin cracked pipe

Thanh Long Nguyen, Myeong Woo Lee, Kunio Hasegawa, Yun Jae Kim

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

Abstract

In this study, the effect of longitudinal distance H between non-aligned twin cracks is investigated using finite element damage analysis. The FE damage analysis based on the stress-modified fracture strain model is used to calculate the failure stress of non-aligned twin cracked pipe. Parametric study on the axial distance H between non-aligned twin cracks with various crack depths and lengths were conducted and compared with predictions using the alignment rules and the net-section collapse load approach for single crack provided in ASME Code. It is shown that the trend of the predicted collapse bending stresses for the non-aligned twin cracked pipes using FE damage analysis are different from the ones using the alignment rule.

Original languageEnglish
Title of host publicationCodes and Standards
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791851586
DOIs
Publication statusPublished - 2018 Jan 1
Externally publishedYes
EventASME 2018 Pressure Vessels and Piping Conference, PVP 2018 - Prague, Czech Republic
Duration: 2018 Jul 152018 Jul 20

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume1A-2018
ISSN (Print)0277-027X

Conference

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

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ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Nguyen, T. L., Lee, M. W., Hasegawa, K., & Kim, Y. J. (2018). Numerical study on longitudinal distance effect on failure stress of non-aligned twin cracked pipe. In Codes and Standards (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 1A-2018). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/PVP201884838