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

doi:10.3795/KSME-A.2019.43.1.001

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 journal › Article › peer-review

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 language	English
Pages (from-to)	1-8
Number of pages	8
Journal	Transactions of the Korean Society of Mechanical Engineers, A
Volume	43
Issue number	1
DOIs	https://doi.org/10.3795/KSME-A.2019.43.1.001
Publication status	Published - 2019

Bibliographical note

Publisher Copyright:
2019 The Korean Society of Mechanical Engineers.

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

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10.3795/KSME-A.2019.43.1.001

Cite this

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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 Kim, {Yun Jae}",

note = "Publisher Copyright: 2019 The Korean Society of Mechanical Engineers.",

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AU - Lee, Hyun Jae

AU - Nam, Hyun Suk

AU - Kim, Yun Jae

N1 - Publisher Copyright: 2019 The Korean Society of Mechanical Engineers.

PY - 2019

Y1 - 2019

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-)

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

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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