Numerical validation of V-factor estimation equations for J calculation under combined mechanical and thermal loadings

Hyun Jae Lee, Hyun Suk Nam, Yun-Jae Kim

Research output: Contribution to journalArticle

Abstract

This paper presents numerical validation of V-factor estimation equations (1) for J calculation under combined mechanical(primary) and thermal(secondary) loadings. In finite element (FE) analyses, pipes with a circumferential part-through internal surface crack were considered, and loading sequence effect of primary and secondary loadings was presented. For the case when secondary loading is applied first, followed by primary loading, the V-factor estimation equations provide conservative results regardless of the elastic follow-up factor. For the opposite case, the V-factor estimation equation for moderate elastic follow-up can be partly applicable depending on the geometry and types of secondary loadings, but that for a large elastic follow-up factor provides non-conservative results.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalTransactions of the Korean Society of Mechanical Engineers, A
Volume43
Issue number1
DOIs
Publication statusPublished - 2019 Jan 1

Fingerprint

Pipe
Cracks
Geometry
Hot Temperature

Keywords

  • Elastic Follow-up Factor(Z-)
  • Finite Element Analysis
  • J-integral(J-)
  • R6 Code(R6)
  • Reference Stress Method
  • V-factor(V-)

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

@article{910e8a5cbdbb4b0489629a30af17e46d,
title = "Numerical validation of V-factor estimation equations for J calculation under combined mechanical and thermal loadings",
abstract = "This paper presents numerical validation of V-factor estimation equations (1) for J calculation under combined mechanical(primary) and thermal(secondary) loadings. In finite element (FE) analyses, pipes with a circumferential part-through internal surface crack were considered, and loading sequence effect of primary and secondary loadings was presented. For the case when secondary loading is applied first, followed by primary loading, the V-factor estimation equations provide conservative results regardless of the elastic follow-up factor. For the opposite case, the V-factor estimation equation for moderate elastic follow-up can be partly applicable depending on the geometry and types of secondary loadings, but that for a large elastic follow-up factor provides non-conservative results.",
keywords = "Elastic Follow-up Factor(Z-), Finite Element Analysis, J-integral(J-), R6 Code(R6), Reference Stress Method, V-factor(V-)",
author = "Lee, {Hyun Jae} and Nam, {Hyun Suk} and Yun-Jae Kim",
year = "2019",
month = "1",
day = "1",
doi = "10.3795/KSME-A.2019.43.1.001",
language = "English",
volume = "43",
pages = "1--8",
journal = "Transactions of the Korean Society of Mechanical Engineers, A",
issn = "1226-4873",
publisher = "Korean Society of Mechanical Engineers",
number = "1",

}

TY - JOUR

T1 - Numerical validation of V-factor estimation equations for J calculation under combined mechanical and thermal loadings

AU - Lee, Hyun Jae

AU - Nam, Hyun Suk

AU - Kim, Yun-Jae

PY - 2019/1/1

Y1 - 2019/1/1

N2 - This paper presents numerical validation of V-factor estimation equations (1) for J calculation under combined mechanical(primary) and thermal(secondary) loadings. In finite element (FE) analyses, pipes with a circumferential part-through internal surface crack were considered, and loading sequence effect of primary and secondary loadings was presented. For the case when secondary loading is applied first, followed by primary loading, the V-factor estimation equations provide conservative results regardless of the elastic follow-up factor. For the opposite case, the V-factor estimation equation for moderate elastic follow-up can be partly applicable depending on the geometry and types of secondary loadings, but that for a large elastic follow-up factor provides non-conservative results.

AB - This paper presents numerical validation of V-factor estimation equations (1) for J calculation under combined mechanical(primary) and thermal(secondary) loadings. In finite element (FE) analyses, pipes with a circumferential part-through internal surface crack were considered, and loading sequence effect of primary and secondary loadings was presented. For the case when secondary loading is applied first, followed by primary loading, the V-factor estimation equations provide conservative results regardless of the elastic follow-up factor. For the opposite case, the V-factor estimation equation for moderate elastic follow-up can be partly applicable depending on the geometry and types of secondary loadings, but that for a large elastic follow-up factor provides non-conservative results.

KW - Elastic Follow-up Factor(Z-)

KW - Finite Element Analysis

KW - J-integral(J-)

KW - R6 Code(R6)

KW - Reference Stress Method

KW - V-factor(V-)

UR - http://www.scopus.com/inward/record.url?scp=85061552843&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85061552843&partnerID=8YFLogxK

U2 - 10.3795/KSME-A.2019.43.1.001

DO - 10.3795/KSME-A.2019.43.1.001

M3 - Article

AN - SCOPUS:85061552843

VL - 43

SP - 1

EP - 8

JO - Transactions of the Korean Society of Mechanical Engineers, A

JF - Transactions of the Korean Society of Mechanical Engineers, A

SN - 1226-4873

IS - 1

ER -