Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/5861
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Civil and Environmental Engineering | - |
dc.creator | Zhu, S | - |
dc.creator | Zhang, Y | - |
dc.date.accessioned | 2014-12-11T08:28:00Z | - |
dc.date.available | 2014-12-11T08:28:00Z | - |
dc.identifier.issn | 2092-7614 | - |
dc.identifier.uri | http://hdl.handle.net/10397/5861 | - |
dc.language.iso | en | en_US |
dc.publisher | Techno Press | en_US |
dc.rights | © 2013 Techno Press | en_US |
dc.subject | Shape memory alloy | en_US |
dc.subject | Superelasticity | en_US |
dc.subject | Loading rate effect | en_US |
dc.subject | Damper | en_US |
dc.subject | Constitutive model | en_US |
dc.title | Loading rate effect on superelastic SMA-based seismic response modification devices | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 607 | - |
dc.identifier.epage | 627 | - |
dc.identifier.volume | 4 | - |
dc.identifier.issue | 6 | - |
dc.identifier.doi | 10.12989/eas.2013.4.6.607 | - |
dcterms.abstract | The application of shape memory alloys (SMAs) to the seismic response reduction of civil engineering structures has attracted growing interest due to their self-centering feature and excellent fatigue performance. The loading rate dependence of SMAs raises a concern in the seismic analysis of SMA-based devices. However, the implementation of micromechanics-based strain-rate-dependent constitutive models in structural analysis software is rather complicated and computationally demanding. This paper investigates the feasibility of replacing complex rate-dependent models with rate-independent constitutive models for superelastic SMA elements in seismic time-history analysis. Three uniaxial constitutive models for superelastic SMAs, including one rate-dependent thermomechanical model and two rate-independent phenomenological models, are considered in this comparative study. The pros and cons of the three nonlinear constitutive models are also discussed. A parametric study of single-degree-of-freedom systems with different initial periods and strength reduction factors is conducted to examine the effect of the three constitutive models on seismic simulations. Additionally, nonlinear time-history analyses of a three-story prototype steel frame building with special SMA-based damping braces are performed. Two suites of seismic records that correspond to frequent and design basis earthquakes are used as base excitations in the seismic analyses of steel-braced frames. The results of this study show that the rate-independent constitutive models, with their parameters properly tuned to dynamic test data, are able to predict the seismic responses of structures with SMA-based seismic response modification devices. | - |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Earthquake and structures, June 2013, v. 4, no. 6, p. 607-627 | - |
dcterms.isPartOf | Earthquakes and structures | - |
dcterms.issued | 2013-06 | - |
dc.identifier.isi | WOS:000324814100002 | - |
dc.identifier.scopus | 2-s2.0-84880574436 | - |
dc.identifier.eissn | 2092-7622 | - |
dc.identifier.rosgroupid | r65897 | - |
dc.description.ros | 2012-2013 > Academic research: refereed > Publication in refereed journal | - |
dc.description.oa | Accepted Manuscript | en_US |
dc.identifier.FolderNumber | OA_IR/PIRA | en_US |
dc.description.pubStatus | Published | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
EnS Loading rate effect of SMA model.pdf | Pre-published version | 624.09 kB | Adobe PDF | View/Open |
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