Progressive collapse analysis of stiffened panel structure with consideration of actual welding distortion and residual stresses

Hui Huang; Hidekazu Murakawa; Ninshu Ma; Zhili Feng

Progressive collapse analysis of stiffened panel structure with consideration of actual welding distortion and residual stresses

Hui Huang, Hidekazu Murakawa, Ninshu Ma, Zhili Feng

Materials Joining

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

To date, inclusion of welding distortion and residual stresses in determining the strength of marine structures is based on empirical formulations due to welding complexity. In this study, a more feasible numerical model was developed from the perspective of inherent strain theory. The accuracy of this simplified numerical model was confirmed by transient thermo-elastic–plastic finite element analysis using a novel dynamic mesh refining and iterative substructure method which is 50 times faster than conventional finite element method. Welding distortion by the two numerical approaches was validated with experimental measurement. The collapse analyses indicated that the inherent strain model predicted a compressive strength and load-displacement curve with high accuracy, as validated by the transient thermo-mechanical model. The global stiffness and the ultimate strength of the welded structure would be overestimated by about 22% if no welding effects were considered. The proposed computation procedure for determining the ultimate strength of welded structures is accurate, simple, and practical and enables improvement of ultimate strength through optimization of welding joint design to reduce the welding residual stress and distortion.

Original language	English
Title of host publication	30th International Ocean and Polar Engineering Conference
Publisher	International Society of Offshore and Polar Engineers
Pages	2962-2968
Number of pages	7
ISBN (Electronic)	9781880653845
State	Published - 2020
Event	30th International Ocean and Polar Engineering Conference, ISOPE 2020 - Virtual, Online Duration: Oct 11 2020 → Oct 16 2020

Publication series

Name	Proceedings of the International Offshore and Polar Engineering Conference
Volume	2020-October
ISSN (Print)	1098-6189
ISSN (Electronic)	1555-1792

Conference

Conference	30th International Ocean and Polar Engineering Conference, ISOPE 2020
City	Virtual, Online
Period	10/11/20 → 10/16/20

Funding

This research was funded in part by the U.S. Department of Energy, Advanced Manufacturing Office (AMO) within the Energy Efficiency and Renewable Energy (EERE) Office, for High Performance Computing for manufacturing (HPC4Mfg), under a prime contract with Oak Ridge National Laboratory (ORNL). This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan). The first author, Hui Huang, is very grateful to the Japanese Government (Monbukagakusho: MEXT) Scholarship for supporting his doctoral study in Osaka University, where he completed most of the above analyses.

Keywords

Buckling
Finite element analysis
Initial stress
Ultimate strength
Welding distortion

Cite this

Huang, H., Murakawa, H., Ma, N., & Feng, Z. (2020). Progressive collapse analysis of stiffened panel structure with consideration of actual welding distortion and residual stresses. In 30th International Ocean and Polar Engineering Conference (pp. 2962-2968). (Proceedings of the International Offshore and Polar Engineering Conference; Vol. 2020-October). International Society of Offshore and Polar Engineers.

Huang, Hui ; Murakawa, Hidekazu ; Ma, Ninshu et al. / Progressive collapse analysis of stiffened panel structure with consideration of actual welding distortion and residual stresses. 30th International Ocean and Polar Engineering Conference. International Society of Offshore and Polar Engineers, 2020. pp. 2962-2968 (Proceedings of the International Offshore and Polar Engineering Conference).

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title = "Progressive collapse analysis of stiffened panel structure with consideration of actual welding distortion and residual stresses",

abstract = "To date, inclusion of welding distortion and residual stresses in determining the strength of marine structures is based on empirical formulations due to welding complexity. In this study, a more feasible numerical model was developed from the perspective of inherent strain theory. The accuracy of this simplified numerical model was confirmed by transient thermo-elastic–plastic finite element analysis using a novel dynamic mesh refining and iterative substructure method which is 50 times faster than conventional finite element method. Welding distortion by the two numerical approaches was validated with experimental measurement. The collapse analyses indicated that the inherent strain model predicted a compressive strength and load-displacement curve with high accuracy, as validated by the transient thermo-mechanical model. The global stiffness and the ultimate strength of the welded structure would be overestimated by about 22% if no welding effects were considered. The proposed computation procedure for determining the ultimate strength of welded structures is accurate, simple, and practical and enables improvement of ultimate strength through optimization of welding joint design to reduce the welding residual stress and distortion.",

keywords = "Buckling, Finite element analysis, Initial stress, Ultimate strength, Welding distortion",

author = "Hui Huang and Hidekazu Murakawa and Ninshu Ma and Zhili Feng",

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year = "2020",

language = "English",

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Huang, H, Murakawa, H, Ma, N & Feng, Z 2020, Progressive collapse analysis of stiffened panel structure with consideration of actual welding distortion and residual stresses. in 30th International Ocean and Polar Engineering Conference. Proceedings of the International Offshore and Polar Engineering Conference, vol. 2020-October, International Society of Offshore and Polar Engineers, pp. 2962-2968, 30th International Ocean and Polar Engineering Conference, ISOPE 2020, Virtual, Online, 10/11/20.

Progressive collapse analysis of stiffened panel structure with consideration of actual welding distortion and residual stresses. / Huang, Hui; Murakawa, Hidekazu; Ma, Ninshu et al.
30th International Ocean and Polar Engineering Conference. International Society of Offshore and Polar Engineers, 2020. p. 2962-2968 (Proceedings of the International Offshore and Polar Engineering Conference; Vol. 2020-October).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Progressive collapse analysis of stiffened panel structure with consideration of actual welding distortion and residual stresses

AU - Huang, Hui

AU - Murakawa, Hidekazu

AU - Ma, Ninshu

AU - Feng, Zhili

PY - 2020

Y1 - 2020

N2 - To date, inclusion of welding distortion and residual stresses in determining the strength of marine structures is based on empirical formulations due to welding complexity. In this study, a more feasible numerical model was developed from the perspective of inherent strain theory. The accuracy of this simplified numerical model was confirmed by transient thermo-elastic–plastic finite element analysis using a novel dynamic mesh refining and iterative substructure method which is 50 times faster than conventional finite element method. Welding distortion by the two numerical approaches was validated with experimental measurement. The collapse analyses indicated that the inherent strain model predicted a compressive strength and load-displacement curve with high accuracy, as validated by the transient thermo-mechanical model. The global stiffness and the ultimate strength of the welded structure would be overestimated by about 22% if no welding effects were considered. The proposed computation procedure for determining the ultimate strength of welded structures is accurate, simple, and practical and enables improvement of ultimate strength through optimization of welding joint design to reduce the welding residual stress and distortion.

AB - To date, inclusion of welding distortion and residual stresses in determining the strength of marine structures is based on empirical formulations due to welding complexity. In this study, a more feasible numerical model was developed from the perspective of inherent strain theory. The accuracy of this simplified numerical model was confirmed by transient thermo-elastic–plastic finite element analysis using a novel dynamic mesh refining and iterative substructure method which is 50 times faster than conventional finite element method. Welding distortion by the two numerical approaches was validated with experimental measurement. The collapse analyses indicated that the inherent strain model predicted a compressive strength and load-displacement curve with high accuracy, as validated by the transient thermo-mechanical model. The global stiffness and the ultimate strength of the welded structure would be overestimated by about 22% if no welding effects were considered. The proposed computation procedure for determining the ultimate strength of welded structures is accurate, simple, and practical and enables improvement of ultimate strength through optimization of welding joint design to reduce the welding residual stress and distortion.

KW - Buckling

KW - Finite element analysis

KW - Initial stress

KW - Ultimate strength

KW - Welding distortion

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T3 - Proceedings of the International Offshore and Polar Engineering Conference

SP - 2962

EP - 2968

BT - 30th International Ocean and Polar Engineering Conference

PB - International Society of Offshore and Polar Engineers

T2 - 30th International Ocean and Polar Engineering Conference, ISOPE 2020

Y2 - 11 October 2020 through 16 October 2020

ER -

Huang H, Murakawa H, Ma N, Feng Z. Progressive collapse analysis of stiffened panel structure with consideration of actual welding distortion and residual stresses. In 30th International Ocean and Polar Engineering Conference. International Society of Offshore and Polar Engineers. 2020. p. 2962-2968. (Proceedings of the International Offshore and Polar Engineering Conference).

Progressive collapse analysis of stiffened panel structure with consideration of actual welding distortion and residual stresses

Abstract

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Keywords

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