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/lp/inderscience-publishers/seismic-response-control-of-modal-building-using-shape-memory-alloy-IiwVauNU8D
- Publisher
- Inderscience Publishers
- Copyright
- Copyright © Inderscience Enterprises Ltd
- ISSN
- 1758-7328
- eISSN
- 1758-7336
- DOI
- 10.1504/ijstructe.2022.123749
- Publisher site
- See Article on Publisher Site
Abstract
Unprestrained NiTinol shape memory alloy wire-based tension sling damper, SMA-TSD, is developed to produce passive damper force at ground story of a three-story modal building. Nonlinear hysteretic behaviour of superelastic SMA is represented by one-dimensional Tanaka model. SMA-TSD is characterised by linear Voigt model with equivalent stiffness and equivalent viscous damping components under seismic excitations to implement it with linear modal building. Equivalent viscous damping ratio is evaluated by proposed instantaneous damping approach more appropriately simulating practical scenario as well as constant damping approach used in other studies. Uncontrolled and controlled responses of modal building are obtained to prove efficacy of superelastic passive SMA-TSD. Seismic performance indices are found to reduce substantially for controlled modal building when design parameters of passive superelastic SMA-TSD are adjusted.
Journal
International Journal of Structural Engineering – Inderscience Publishers
Published: Jan 1, 2022