Quantification of the yield strength-to-elastic modulus ratio effect on TES plastic loads from finite element limit analyses of elbows

Kuk Hee Lee; Chang Sik Oh; Yun Jae Kim; Kee Bong Yoon

doi:10.1016/j.engfracmech.2008.12.009

Quantification of the yield strength-to-elastic modulus ratio effect on TES plastic loads from finite element limit analyses of elbows

Kuk Hee Lee, Chang Sik Oh, Yun Jae Kim, Kee Bong Yoon

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

This paper quantifies the effect of the yield strength-to-elastic modulus ratio on twice-elastic-slope plastic loads for 90-degree elbows under in-plane and out-of-plane bending. Based on extensive and systematic finite element limit analyses using elastic-perfectly plastic materials, simple regression equations between the yield strength-to-elastic modulus ratio and twice-elastic-slope plastic loads for elbows under in-plane closing, in-plane opening and out-of-plane bending are proposed, and validated against published experimental data. Applicability of the proposed equations to circumferential cracked elbows under in-plane bending is also investigated.

Original language	English
Pages (from-to)	856-875
Number of pages	20
Journal	Engineering Fracture Mechanics
Volume	76
Issue number	7
DOIs	https://doi.org/10.1016/j.engfracmech.2008.12.009
Publication status	Published - 2009 May

Bibliographical note

Funding Information:
This research is performed under programs of Basic Atomic Energy Research Institute and Engineering Research Center (No. R11-2007-028-00000-0), funded by Korea Science & Engineering Foundation.

Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.

Keywords

Elbow
Finite element limit analysis
Large geometry change
Plastic load
Twice-elastic-slope

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.1016/j.engfracmech.2008.12.009

Cite this

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title = "Quantification of the yield strength-to-elastic modulus ratio effect on TES plastic loads from finite element limit analyses of elbows",

abstract = "This paper quantifies the effect of the yield strength-to-elastic modulus ratio on twice-elastic-slope plastic loads for 90-degree elbows under in-plane and out-of-plane bending. Based on extensive and systematic finite element limit analyses using elastic-perfectly plastic materials, simple regression equations between the yield strength-to-elastic modulus ratio and twice-elastic-slope plastic loads for elbows under in-plane closing, in-plane opening and out-of-plane bending are proposed, and validated against published experimental data. Applicability of the proposed equations to circumferential cracked elbows under in-plane bending is also investigated.",

keywords = "Elbow, Finite element limit analysis, Large geometry change, Plastic load, Twice-elastic-slope",

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note = "Funding Information: This research is performed under programs of Basic Atomic Energy Research Institute and Engineering Research Center (No. R11-2007-028-00000-0), funded by Korea Science & Engineering Foundation. Copyright: Copyright 2009 Elsevier B.V., All rights reserved.",

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AU - Oh, Chang Sik

AU - Kim, Yun Jae

AU - Yoon, Kee Bong

N1 - Funding Information: This research is performed under programs of Basic Atomic Energy Research Institute and Engineering Research Center (No. R11-2007-028-00000-0), funded by Korea Science & Engineering Foundation. Copyright: Copyright 2009 Elsevier B.V., All rights reserved.

PY - 2009/5

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N2 - This paper quantifies the effect of the yield strength-to-elastic modulus ratio on twice-elastic-slope plastic loads for 90-degree elbows under in-plane and out-of-plane bending. Based on extensive and systematic finite element limit analyses using elastic-perfectly plastic materials, simple regression equations between the yield strength-to-elastic modulus ratio and twice-elastic-slope plastic loads for elbows under in-plane closing, in-plane opening and out-of-plane bending are proposed, and validated against published experimental data. Applicability of the proposed equations to circumferential cracked elbows under in-plane bending is also investigated.

AB - This paper quantifies the effect of the yield strength-to-elastic modulus ratio on twice-elastic-slope plastic loads for 90-degree elbows under in-plane and out-of-plane bending. Based on extensive and systematic finite element limit analyses using elastic-perfectly plastic materials, simple regression equations between the yield strength-to-elastic modulus ratio and twice-elastic-slope plastic loads for elbows under in-plane closing, in-plane opening and out-of-plane bending are proposed, and validated against published experimental data. Applicability of the proposed equations to circumferential cracked elbows under in-plane bending is also investigated.

KW - Elbow

KW - Finite element limit analysis

KW - Large geometry change

KW - Plastic load

KW - Twice-elastic-slope

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Quantification of the yield strength-to-elastic modulus ratio effect on TES plastic loads from finite element limit analyses of elbows

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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