Elastic-Plastic J-Estimation for circumferentially cracked pipes under combined mechanical and thermal loadings

Chang Young Oh, Yun-Jae Kim, R. A. Ainsworth

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

Abstract

This paper addresses load order effects on elastic-plastic J estimation under combined mechanical and thermal loads for circumferentially cracked pipes. The load order effects, for various thermal gradient types and mechanical loading, are evaluated for a range of magnitudes of the loadings, crack sizes and material hardening. Variations of elastic-plastic J obtained by finite element analysis are compared with existing and proposed methods for use with the R6 defect assessment procedure. The load order effects are presented on the R6 failure assessment diagram (FAD) by calculating the two parameters Kr and Lr from the finite element results. It is shown that there are significant load order effects at large secondary stress cases but these are successfully treated by simplified methods proposed for use with R6.

Original languageEnglish
Title of host publicationAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume1 A
DOIs
Publication statusPublished - 2013 Dec 1
EventASME 2013 Pressure Vessels and Piping Conference, PVP 2013 - Paris, France
Duration: 2013 Jul 142013 Jul 18

Other

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

Fingerprint

Pipe
Plastics
Thermal load
Thermal gradients
Hardening
Loads (forces)
Cracks
Finite element method
Defects
Hot Temperature

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Oh, C. Y., Kim, Y-J., & Ainsworth, R. A. (2013). Elastic-Plastic J-Estimation for circumferentially cracked pipes under combined mechanical and thermal loadings. In American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP (Vol. 1 A) https://doi.org/10.1115/PVP2013-98129

Elastic-Plastic J-Estimation for circumferentially cracked pipes under combined mechanical and thermal loadings. / Oh, Chang Young; Kim, Yun-Jae; Ainsworth, R. A.

American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. Vol. 1 A 2013.

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

Oh, CY, Kim, Y-J & Ainsworth, RA 2013, Elastic-Plastic J-Estimation for circumferentially cracked pipes under combined mechanical and thermal loadings. in American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. vol. 1 A, ASME 2013 Pressure Vessels and Piping Conference, PVP 2013, Paris, France, 13/7/14. https://doi.org/10.1115/PVP2013-98129
Oh CY, Kim Y-J, Ainsworth RA. Elastic-Plastic J-Estimation for circumferentially cracked pipes under combined mechanical and thermal loadings. In American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. Vol. 1 A. 2013 https://doi.org/10.1115/PVP2013-98129
Oh, Chang Young ; Kim, Yun-Jae ; Ainsworth, R. A. / Elastic-Plastic J-Estimation for circumferentially cracked pipes under combined mechanical and thermal loadings. American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. Vol. 1 A 2013.
@inproceedings{48ed5bbc5a174eb28c5a0f2804ce8b2c,
title = "Elastic-Plastic J-Estimation for circumferentially cracked pipes under combined mechanical and thermal loadings",
abstract = "This paper addresses load order effects on elastic-plastic J estimation under combined mechanical and thermal loads for circumferentially cracked pipes. The load order effects, for various thermal gradient types and mechanical loading, are evaluated for a range of magnitudes of the loadings, crack sizes and material hardening. Variations of elastic-plastic J obtained by finite element analysis are compared with existing and proposed methods for use with the R6 defect assessment procedure. The load order effects are presented on the R6 failure assessment diagram (FAD) by calculating the two parameters Kr and Lr from the finite element results. It is shown that there are significant load order effects at large secondary stress cases but these are successfully treated by simplified methods proposed for use with R6.",
author = "Oh, {Chang Young} and Yun-Jae Kim and Ainsworth, {R. A.}",
year = "2013",
month = "12",
day = "1",
doi = "10.1115/PVP2013-98129",
language = "English",
isbn = "9780791855638",
volume = "1 A",
booktitle = "American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP",

}

TY - GEN

T1 - Elastic-Plastic J-Estimation for circumferentially cracked pipes under combined mechanical and thermal loadings

AU - Oh, Chang Young

AU - Kim, Yun-Jae

AU - Ainsworth, R. A.

PY - 2013/12/1

Y1 - 2013/12/1

N2 - This paper addresses load order effects on elastic-plastic J estimation under combined mechanical and thermal loads for circumferentially cracked pipes. The load order effects, for various thermal gradient types and mechanical loading, are evaluated for a range of magnitudes of the loadings, crack sizes and material hardening. Variations of elastic-plastic J obtained by finite element analysis are compared with existing and proposed methods for use with the R6 defect assessment procedure. The load order effects are presented on the R6 failure assessment diagram (FAD) by calculating the two parameters Kr and Lr from the finite element results. It is shown that there are significant load order effects at large secondary stress cases but these are successfully treated by simplified methods proposed for use with R6.

AB - This paper addresses load order effects on elastic-plastic J estimation under combined mechanical and thermal loads for circumferentially cracked pipes. The load order effects, for various thermal gradient types and mechanical loading, are evaluated for a range of magnitudes of the loadings, crack sizes and material hardening. Variations of elastic-plastic J obtained by finite element analysis are compared with existing and proposed methods for use with the R6 defect assessment procedure. The load order effects are presented on the R6 failure assessment diagram (FAD) by calculating the two parameters Kr and Lr from the finite element results. It is shown that there are significant load order effects at large secondary stress cases but these are successfully treated by simplified methods proposed for use with R6.

UR - http://www.scopus.com/inward/record.url?scp=84894666537&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84894666537&partnerID=8YFLogxK

U2 - 10.1115/PVP2013-98129

DO - 10.1115/PVP2013-98129

M3 - Conference contribution

AN - SCOPUS:84894666537

SN - 9780791855638

VL - 1 A

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

ER -