Limit loads for circumferentially cracked pipes under combined bending and torsion with tension

Ho Wan Ryu, Jae Jun Han, Yun Jae Kim

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

1 Citation (Scopus)

Abstract

In power plants, piping installations with a circumferential crack can be operated under combined bending and torsion. ASME Boiler and Pressure Vessel code Section XI non-mandatory Appendix C provides the flaw evaluations for fully-plastic fracture using limit load criteria for the structural integrity of the cracked pipes. According to the recent version of Code, combined loading is provided only for membrane and bending. Even though actual operating conditions have torsion loading, the methodology for evaluating torsion load is not established, and assumed torsion is relatively small compared to membrane and bending and can be ignored in the evaluation. This paper provides the results of limit load analyses by using finite element models for circumferentially cracked pipes under pure bending, pure torsion and combined bending and torsion with tension. Theoretical limit load solutions based on net-section fully-plastic criteria are compared with the results of finite element analyses. The validation of theoretical limit loads for combined bending and torsion with tension is discussed.

Original languageEnglish
Title of host publicationASME 2013 Pressure Vessels and Piping Conference, PVP 2013
DOIs
Publication statusPublished - 2013 Dec 1
Externally publishedYes
EventASME 2013 Pressure Vessels and Piping Conference, PVP 2013 - Paris, France
Duration: 2013 Jul 142013 Jul 18

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume5
ISSN (Print)0277-027X

Conference

ConferenceASME 2013 Pressure Vessels and Piping Conference, PVP 2013
CountryFrance
CityParis
Period13/7/1413/7/18

ASJC Scopus subject areas

  • Mechanical Engineering

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  • Cite this

    Ryu, H. W., Han, J. J., & Kim, Y. J. (2013). Limit loads for circumferentially cracked pipes under combined bending and torsion with tension. In ASME 2013 Pressure Vessels and Piping Conference, PVP 2013 (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 5). https://doi.org/10.1115/PVP2013-98102