Limit loads and approximate J estimates for axial through-wall cracked pipe bends

Yun Jae Kim; Tae Kwang Song; Jong Sung Kim; Tae Eun Jin

doi:10.1007/s10704-007-9166-2

Limit loads and approximate J estimates for axial through-wall cracked pipe bends

Yun Jae Kim, Tae Kwang Song, Jong Sung Kim, Tae Eun Jin

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

5 Citations (Scopus)

Abstract

This paper presents plastic limit loads and approximate J estimates for axial through-wall cracked pipe bends under internal pressure and in-plane bending. These loads and estimates are based on small strain finite element limit analyses using elastic-perfectly plastic materials. Geometric variables associated with the crack and pipe bend are systematically varied, and three possible crack locations (intrados, crown and extrados) are considered. Effects of the bend and crack geometries on plastic limit loads are quantified, and closed-form limit load solutions are given. Based on the proposed limit load solutions, a reference stress based the J estimation scheme for axial through-wall cracked pipe bends under internal pressure and in-plane bending is proposed.

Original language	English
Pages (from-to)	249-264
Number of pages	16
Journal	International Journal of Fracture
Volume	146
Issue number	4
DOIs	https://doi.org/10.1007/s10704-007-9166-2
Publication status	Published - 2007 Aug

Bibliographical note

Funding Information:
Acknowledgements This work is supported by ETEP(R-2004-1-134), Ministry of Commerce, Industry and Energy (MOCIE). The first author also wishes to acknowledge partial support from Korea University.

Keywords

Axial through-wall crack
Finite element analysis
J estimation
Plastic limit load
Reference stress

ASJC Scopus subject areas

Computational Mechanics
Modelling and Simulation
Mechanics of Materials

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10.1007/s10704-007-9166-2

Cite this

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title = "Limit loads and approximate J estimates for axial through-wall cracked pipe bends",

abstract = "This paper presents plastic limit loads and approximate J estimates for axial through-wall cracked pipe bends under internal pressure and in-plane bending. These loads and estimates are based on small strain finite element limit analyses using elastic-perfectly plastic materials. Geometric variables associated with the crack and pipe bend are systematically varied, and three possible crack locations (intrados, crown and extrados) are considered. Effects of the bend and crack geometries on plastic limit loads are quantified, and closed-form limit load solutions are given. Based on the proposed limit load solutions, a reference stress based the J estimation scheme for axial through-wall cracked pipe bends under internal pressure and in-plane bending is proposed.",

keywords = "Axial through-wall crack, Finite element analysis, J estimation, Plastic limit load, Reference stress",

author = "Kim, {Yun Jae} and Song, {Tae Kwang} and Kim, {Jong Sung} and Jin, {Tae Eun}",

note = "Funding Information: Acknowledgements This work is supported by ETEP(R-2004-1-134), Ministry of Commerce, Industry and Energy (MOCIE). The first author also wishes to acknowledge partial support from Korea University.",

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AU - Song, Tae Kwang

AU - Kim, Jong Sung

AU - Jin, Tae Eun

N1 - Funding Information: Acknowledgements This work is supported by ETEP(R-2004-1-134), Ministry of Commerce, Industry and Energy (MOCIE). The first author also wishes to acknowledge partial support from Korea University.

PY - 2007/8

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N2 - This paper presents plastic limit loads and approximate J estimates for axial through-wall cracked pipe bends under internal pressure and in-plane bending. These loads and estimates are based on small strain finite element limit analyses using elastic-perfectly plastic materials. Geometric variables associated with the crack and pipe bend are systematically varied, and three possible crack locations (intrados, crown and extrados) are considered. Effects of the bend and crack geometries on plastic limit loads are quantified, and closed-form limit load solutions are given. Based on the proposed limit load solutions, a reference stress based the J estimation scheme for axial through-wall cracked pipe bends under internal pressure and in-plane bending is proposed.

AB - This paper presents plastic limit loads and approximate J estimates for axial through-wall cracked pipe bends under internal pressure and in-plane bending. These loads and estimates are based on small strain finite element limit analyses using elastic-perfectly plastic materials. Geometric variables associated with the crack and pipe bend are systematically varied, and three possible crack locations (intrados, crown and extrados) are considered. Effects of the bend and crack geometries on plastic limit loads are quantified, and closed-form limit load solutions are given. Based on the proposed limit load solutions, a reference stress based the J estimation scheme for axial through-wall cracked pipe bends under internal pressure and in-plane bending is proposed.

KW - Axial through-wall crack

KW - Finite element analysis

KW - J estimation

KW - Plastic limit load

KW - Reference stress

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DO - 10.1007/s10704-007-9166-2

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SP - 249

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JF - International Journal of Fracture

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Limit loads and approximate J estimates for axial through-wall cracked pipe bends

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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