Importance of Isotropic Hardening in the Modeling of Buckling Restrained Braces
Publication: Journal of Structural Engineering
Volume 141, Issue 4
Abstract
The seismic response of buckling-restrained braces has often been modeled as elastic plastic with kinematic hardening or, even more simplistically, as elastic perfectly plastic. The use of these models has not raised particular criticism because of the lack of models able to represent isotropic hardening with acceptable accuracy and reliability. In recent years, the effect of isotropic hardening has been included in some more refined models of the seismic response of buckling-restrained braces. One of these refined models is considered in this paper to assess the effectiveness of some common models in which the effect of the isotropic hardening is not taken into account. A comparison is made on single-story and multistory structures subjected to natural and artificial accelerograms.
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Information
Published In
Journal of Structural Engineering
Volume 141 • Issue 4 • April 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Nov 9, 2012
Accepted: Jan 13, 2014
Published online: Jul 14, 2014
Discussion open until: Dec 14, 2014
Published in print: Apr 1, 2015
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