Huang, H. and Chang, W.-S. orcid.org/0000-0002-2218-001X (2018) Reducing footfall-induced vibration in the timber floor system using a pre-stressed shape memory alloy-based tuned mass damper. In: Proceedings of the World Conference on Timber Engineering 2018. 2018 World Conference on Timber Engineering, 20-23 Aug 2018, Seoul, Rep. of Korea. WCTE
Abstract
The feasibility of utilising a shape memory alloy (SMA) in a tuneable mass damper to reduce the excessive vibration of a timber floor system was revealed in a pilot study. In real cases, the in-service excitations on a timber floor can be complex, and more frequencies and randomness can be involved. This paper aims to appraise the effectiveness of the SMA-based semi-active TMD in a real-scale timber floor by conducting OPENSEES numerical analysis. In this study, the human walking footfall-induced vibration is considered as inputs. When the floor-TMD system is subject to walking, which involves relatively low dominant frequencies, cooling the SMA is effective in reducing the off-tuning excessive vibration caused by increasing floor mass. Contrary to expectations, there is no increased vibration in the off-tuning condition caused by decreasing floor mass, because the response at the lower frequency range decreases.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 WCTE. |
Keywords: | Shape memory alloy; Timber floor; Tuned mass damper; Reducing footfall vibration |
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) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 05 Sep 2018 11:05 |
Last Modified: | 21 Feb 2019 11:05 |
Published Version: | https://indico.conference4me.psnc.pl/event/171/ses... |
Status: | Published |
Publisher: | WCTE |
Refereed: | Yes |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:135192 |