Single-degree-of-freedom approach to incorporate axial load effects on pressure impulse curves for steel columns

Dragos, J; Wu, C

Single-degree-of-freedom approach to incorporate axial load effects on pressure impulse curves for steel columns

Dragos, J Wu, C

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Publication Type:: Journal Article
Citation:: Journal of Engineering Mechanics, 2015, 141 (1)
Issue Date:: 2015-01-01

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Field	Value	Language
dc.contributor.author	Dragos, J	en_US
dc.contributor.author	Wu, C https://orcid.org/0000-0001-6786-7934	en_US
dc.date.issued	2015-01-01	en_US
dc.identifier.citation	Journal of Engineering Mechanics, 2015, 141 (1)	en_US
dc.identifier.issn	0733-9399	en_US
dc.identifier.uri	http://hdl.handle.net/10453/119379
dc.description.abstract	© 2014 American Society of Civil Engineers. In this paper, the moment-curvature behavior of a steel column under constant axial loading is implemented into a computationally efficient one-dimensional finite-element approach, utilizing Timoshenko beam theory, to determine the dynamic response of steel columns subjected to blasts. Then, a new single-degree-of-freedom (SDOF) approach is provided for determining pressure impulse curves for steel columns under constant axial loading. This SDOF approach relies on the newly defined concept of the reduced resistance-deflection function to accurately simulate the PΔ effects and the global instability failure mechanism, which are both caused by the axial load. The aforementioned finite-element approach is then used to thoroughly validate the newly proposed SDOF approach for deriving pressure impulse curves. It is shown that, despite the inherent simplicity of the approach, the newly proposed SDOF approach provides accurate and reliable results.	en_US
dc.relation.ispartof	Journal of Engineering Mechanics	en_US
dc.relation.isbasedon	10.1061/(ASCE)EM.1943-7889.0000818	en_US
dc.subject.classification	Civil Engineering	en_US
dc.title	Single-degree-of-freedom approach to incorporate axial load effects on pressure impulse curves for steel columns	en_US
dc.type	Journal Article
utslib.citation.volume	1	en_US
utslib.citation.volume	141	en_US
utslib.for	0905 Civil Engineering	en_US
utslib.for	0913 Mechanical Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access
pubs.issue	1	en_US
pubs.publication-status	Published	en_US
pubs.volume	141	en_US

Abstract:

© 2014 American Society of Civil Engineers. In this paper, the moment-curvature behavior of a steel column under constant axial loading is implemented into a computationally efficient one-dimensional finite-element approach, utilizing Timoshenko beam theory, to determine the dynamic response of steel columns subjected to blasts. Then, a new single-degree-of-freedom (SDOF) approach is provided for determining pressure impulse curves for steel columns under constant axial loading. This SDOF approach relies on the newly defined concept of the reduced resistance-deflection function to accurately simulate the PΔ effects and the global instability failure mechanism, which are both caused by the axial load. The aforementioned finite-element approach is then used to thoroughly validate the newly proposed SDOF approach for deriving pressure impulse curves. It is shown that, despite the inherent simplicity of the approach, the newly proposed SDOF approach provides accurate and reliable results.

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http://hdl.handle.net/10453/119379