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

Fingerprint

Load limits
Torsional stress
Pipe
Bending (forming)
Pressure vessel codes
Plastics
Membranes
Structural integrity
Boilers
Loads (forces)
Power plants
Cracks
Defects

ASJC Scopus subject areas

  • Mechanical Engineering

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

Limit loads for circumferentially cracked pipes under combined bending and torsion with tension. / Ryu, Ho Wan; Han, Jae Jun; Kim, Yun Jae.

ASME 2013 Pressure Vessels and Piping Conference, PVP 2013. 2013. (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 5).

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

Ryu, HW, Han, JJ & Kim, YJ 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, ASME 2013 Pressure Vessels and Piping Conference, PVP 2013, Paris, France, 13/7/14. https://doi.org/10.1115/PVP2013-98102
Ryu HW, Han JJ, Kim YJ. Limit loads for circumferentially cracked pipes under combined bending and torsion with tension. In ASME 2013 Pressure Vessels and Piping Conference, PVP 2013. 2013. (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP). https://doi.org/10.1115/PVP2013-98102
Ryu, Ho Wan ; Han, Jae Jun ; Kim, Yun Jae. / Limit loads for circumferentially cracked pipes under combined bending and torsion with tension. ASME 2013 Pressure Vessels and Piping Conference, PVP 2013. 2013. (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP).
@inproceedings{376676d5cf4c4b3eada9201deffee1e6,
title = "Limit loads for circumferentially cracked pipes under combined bending and torsion with tension",
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.",
author = "Ryu, {Ho Wan} and Han, {Jae Jun} and Kim, {Yun Jae}",
year = "2013",
month = "12",
day = "1",
doi = "10.1115/PVP2013-98102",
language = "English",
isbn = "9780791855690",
series = "American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP",
booktitle = "ASME 2013 Pressure Vessels and Piping Conference, PVP 2013",

}

TY - GEN

T1 - Limit loads for circumferentially cracked pipes under combined bending and torsion with tension

AU - Ryu, Ho Wan

AU - Han, Jae Jun

AU - Kim, Yun Jae

PY - 2013/12/1

Y1 - 2013/12/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84894673759&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84894673759&partnerID=8YFLogxK

U2 - 10.1115/PVP2013-98102

DO - 10.1115/PVP2013-98102

M3 - Conference contribution

AN - SCOPUS:84894673759

SN - 9780791855690

T3 - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP

BT - ASME 2013 Pressure Vessels and Piping Conference, PVP 2013

ER -