Stiffness update procedure in iterative global-local analysis of columns

Emre Erkmen, R; Afnani, A; Niki, V

Stiffness update procedure in iterative global-local analysis of columns

Emre Erkmen, R Afnani, A Niki, V

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Publication Type:: Conference Proceeding
Citation:: ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE), 2015, 9-2015
Issue Date:: 2015-01-01

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Field	Value	Language
dc.contributor.author	Emre Erkmen, R	en_US
dc.contributor.author	Afnani, A	en_US
dc.contributor.author	Niki, V	en_US
dc.date.issued	2015-01-01	en_US
dc.identifier.citation	ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE), 2015, 9-2015	en_US
dc.identifier.isbn	9780791857526	en_US
dc.identifier.uri	http://hdl.handle.net/10453/106513
dc.description.abstract	Copyright © 2015 by ASME. The purpose of this study is to develop a stiffness update technique to be used in a computationally efficient finite element solution for the analysis of columns undergoing local deformations, within the procedure of iterative global-local analysis. The computational problem that arises is that the stiffness matrix is formulated according to the global model, and as a result, considerably large number of iterations is required when the local deformations are significant. To overcome this difficulty, a stiffness update technique is presented in which the displacement field of the global model is altered at each step to consider the locally induced softening behaviour in order to accelerate the convergence. This goal is achieved by introducing embedded discontinuities in the beam element.	en_US
dc.relation.ispartof	ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)	en_US
dc.relation.isbasedon	10.1115/IMECE2015-53331	en_US
dc.title	Stiffness update procedure in iterative global-local analysis of columns	en_US
dc.type	Conference Proceeding
utslib.citation.volume	9-2015	en_US
utslib.for	0905 Civil 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
pubs.organisational-group	/University of Technology Sydney/Students
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	9-2015	en_US

Abstract:

Copyright © 2015 by ASME. The purpose of this study is to develop a stiffness update technique to be used in a computationally efficient finite element solution for the analysis of columns undergoing local deformations, within the procedure of iterative global-local analysis. The computational problem that arises is that the stiffness matrix is formulated according to the global model, and as a result, considerably large number of iterations is required when the local deformations are significant. To overcome this difficulty, a stiffness update technique is presented in which the displacement field of the global model is altered at each step to consider the locally induced softening behaviour in order to accelerate the convergence. This goal is achieved by introducing embedded discontinuities in the beam element.

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http://hdl.handle.net/10453/106513