Huang, H. and Chang, W.-S. orcid.org/0000-0002-2218-001X (2020) Re-tuning an off-tuned tuned mass damper by adjusting temperature of shape memory alloy: Exposed to wind action. Structures, 25. pp. 180-189. ISSN 2352-0124
Abstract
To reduce the wind-induced vibration of building structures, tuned mass damper (TMD) is a widely used approach. However, the off-tune of TMD can cause larger excessive vibration to the structure. In this study, shape memory alloy (SMA) is employed in TMD for retuning. At first, the dynamic properties of SMA-based TMD were characterised by free vibration at between −40 °C and 65 °C. It is found the stiffness increased and damping reduced with rising temperature. Next, the SMA-based TMD was applied to a steel frame structure under wind excitations. The wind action was generated by autoregressive models method and input by a shaking table. The results present the wind-induced vibration can be attenuated effectively by installing a SMA-based TMD. By changing the main structural mass, the TMD was easy to be off-tuned and the structural response was increased. By means of cooling SMA to retune the TMD, the response of the system can be reduced effectively. However, the effect of heating SMA was relatively small. The increase of damping capacity by combing multiple SMA bars and the applications of SMAs with higher phase transformation temperatures are important to be further investigated in TMD, so as to improve the effectiveness of heating SMA.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 Institution of Structural Engineers. Published by Elsevier Ltd. This is an author produced version of a paper subsequently published in Structures. Uploaded in accordance with the publisher's self-archiving policy. Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
Keywords: | Shape memory alloy; Wind action; Tuned mass damper; Retune; Off-tuning |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Social Sciences (Sheffield) > School of Architecture (Sheffield) |
Funding Information: | Funder Grant number Material Characterisation of Superelastic Copper Alloy Rods TEK-1079 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 13 Mar 2020 15:46 |
Last Modified: | 13 Mar 2021 01:38 |
Status: | Published |
Publisher: | Elsevier BV |
Refereed: | Yes |
Identification Number: | 10.1016/j.istruc.2020.02.025 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:158418 |