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                                       Details for article 7 of 8 found articles
 
 
  Testing of Superelastic Recentering Pre-Strained Braces for Seismic Resistant Design
 
 
Title: Testing of Superelastic Recentering Pre-Strained Braces for Seismic Resistant Design
Author: Lafortune, Pierre
McCormick, Jason
DesRoches, Reginald
Terriault, Patrick
Appeared in: Journal of earthquake engineering
Paging: Volume 11 (2007) nr. 3 pages 383-399
Year: 2007-05
Contents: Over the past decade, the use of shape memory alloys (SMAs) in passive control devices has been explored. Nevertheless, some aspects in regards to the cyclic behavior of SMAs and the effect of pre-straining need to be clarified. In this study, small-scale shake table tests have been performed to explore the effectiveness of SMA bracing systems as compared to steel bracing systems. The reduced-scale experimental results imply that SMAs used in braces are more effective in controlling the response of a steel frame compared with a traditional bracing system. A finite element model (FEM) of the frame is developed in order to compare the analytical results with the shake table tests. Further, the effect of pre-straining the SMA braces is evaluated through both experimental and analytical studies. The results show that pre-straining improves the performance of the frame compared to the nonpre-strained case. However, as the level of pre-straining increases above approximately 1.0% to 1.5%, the benefits of pre-straining decrease compared with low-to-moderate pre-strain levels.
Publisher: Taylor & Francis
Source file: Elektronische Wetenschappelijke Tijdschriften
 
 

                             Details for article 7 of 8 found articles
 
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