V-factor estimation under thermal and mechanical stress for circumferentially cracked cylinder

Tae Kwang Song, Chang Kyun Oh, Yun-Jae Kim

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This paper provides V-factor estimation under combined mechanical and thermal load for circumferential cracks. Results are based on fmite element analyses and effect of types and magnitudes of the thermal stress, crack geometry, the loading mode and plastic strain hardening on variations of the V-factor are investigated. The results of finite element analyses are compared with R6 values. As a result, it is shown that R6 gives generally conservative results. The conservatism is especially increased for the combination of large mechanical and thermal load. As a result, new estimation method which uses failure assessment line in R6 is proposed for V-factor and gives less conservative results.

Original languageEnglish
Pages (from-to)1123-1131
Number of pages9
JournalTransactions of the Korean Society of Mechanical Engineers, A
Volume32
Issue number12
DOIs
Publication statusPublished - 2008 Dec 1

Fingerprint

Thermal load
Cracks
Strain hardening
Thermal stress
Plastic deformation
Geometry
Hot Temperature

Keywords

  • J-integral
  • Primary stress
  • Reference stress method
  • Secondary stress
  • V-factor

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

V-factor estimation under thermal and mechanical stress for circumferentially cracked cylinder. / Song, Tae Kwang; Oh, Chang Kyun; Kim, Yun-Jae.

In: Transactions of the Korean Society of Mechanical Engineers, A, Vol. 32, No. 12, 01.12.2008, p. 1123-1131.

Research output: Contribution to journalArticle

@article{384094f5986e44c1b863bcb0ad546df3,
title = "V-factor estimation under thermal and mechanical stress for circumferentially cracked cylinder",
abstract = "This paper provides V-factor estimation under combined mechanical and thermal load for circumferential cracks. Results are based on fmite element analyses and effect of types and magnitudes of the thermal stress, crack geometry, the loading mode and plastic strain hardening on variations of the V-factor are investigated. The results of finite element analyses are compared with R6 values. As a result, it is shown that R6 gives generally conservative results. The conservatism is especially increased for the combination of large mechanical and thermal load. As a result, new estimation method which uses failure assessment line in R6 is proposed for V-factor and gives less conservative results.",
keywords = "J-integral, Primary stress, Reference stress method, Secondary stress, V-factor",
author = "Song, {Tae Kwang} and Oh, {Chang Kyun} and Yun-Jae Kim",
year = "2008",
month = "12",
day = "1",
doi = "10.3795/KSME-A.2008.32.12.1123",
language = "English",
volume = "32",
pages = "1123--1131",
journal = "Transactions of the Korean Society of Mechanical Engineers, A",
issn = "1226-4873",
publisher = "Korean Society of Mechanical Engineers",
number = "12",

}

TY - JOUR

T1 - V-factor estimation under thermal and mechanical stress for circumferentially cracked cylinder

AU - Song, Tae Kwang

AU - Oh, Chang Kyun

AU - Kim, Yun-Jae

PY - 2008/12/1

Y1 - 2008/12/1

N2 - This paper provides V-factor estimation under combined mechanical and thermal load for circumferential cracks. Results are based on fmite element analyses and effect of types and magnitudes of the thermal stress, crack geometry, the loading mode and plastic strain hardening on variations of the V-factor are investigated. The results of finite element analyses are compared with R6 values. As a result, it is shown that R6 gives generally conservative results. The conservatism is especially increased for the combination of large mechanical and thermal load. As a result, new estimation method which uses failure assessment line in R6 is proposed for V-factor and gives less conservative results.

AB - This paper provides V-factor estimation under combined mechanical and thermal load for circumferential cracks. Results are based on fmite element analyses and effect of types and magnitudes of the thermal stress, crack geometry, the loading mode and plastic strain hardening on variations of the V-factor are investigated. The results of finite element analyses are compared with R6 values. As a result, it is shown that R6 gives generally conservative results. The conservatism is especially increased for the combination of large mechanical and thermal load. As a result, new estimation method which uses failure assessment line in R6 is proposed for V-factor and gives less conservative results.

KW - J-integral

KW - Primary stress

KW - Reference stress method

KW - Secondary stress

KW - V-factor

UR - http://www.scopus.com/inward/record.url?scp=57749087733&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=57749087733&partnerID=8YFLogxK

U2 - 10.3795/KSME-A.2008.32.12.1123

DO - 10.3795/KSME-A.2008.32.12.1123

M3 - Article

AN - SCOPUS:57749087733

VL - 32

SP - 1123

EP - 1131

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

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

SN - 1226-4873

IS - 12

ER -