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Keywords: base isolation, shape memory alloy, equivalent linear, vibration control..

Summary

Shape memory alloy (SMA) with rubber bearings has been recently proposed as a superior alternative to traditional bearings, such as lead-rubber bearings (LRB). In this paper the response of a multi-storied building with base isolator supplemented with a SMA wire is investigated. The isolated building is modelled as a shear type structure with lateral degree-of-freedom at each floor. The coupled differential equations of motion for the isolated system are derived and solved in the incremental form using Newmark's step-by-step method. The isolators are modelled by using two different mathematical models, using the Gresser-Cozzarelli Model for the SMA and the proposed SMA equivalent linear elastic-viscous model. The proposed equivalent model for the SMA is a modification of the AASHTO guideline specifications for the LRB. The responses obtained from isolated structure using these two models are compared. The variation of top floor absolute acceleration and bearing displacement for the isolated structure is computed to compare above models. It is observed that the proposed equivalent linear model for the SMA can predict with comparable accurate the response of the SMA nonlinear model.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 106 PROCEEDINGS OF THE TWELFTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL STRUCTURES TECHNOLOGY Edited by: Paper 65 An Equivalent Elastic-Viscous Model of Shape Memory Alloy Supplemented Isolation Bearing S.L. Ghodke and R.S. Jangid Department of Civil Engineering, Indian Institute of Technology Bombay, Powai, Mumbai, India doi:10.4203/ccp.106.65 purchase the full-text of this paper Full Bibliographic Reference for this paper S.L. Ghodke, R.S. Jangid, "An Equivalent Elastic-Viscous Model of Shape Memory Alloy Supplemented Isolation Bearing", in , (Editors), "Proceedings of the Twelfth International Conference on Computational Structures Technology", Civil-Comp Press, Stirlingshire, UK, Paper 65, 2014. doi:10.4203/ccp.106.65 Keywords: base isolation, shape memory alloy, equivalent linear, vibration control.. Summary Shape memory alloy (SMA) with rubber bearings has been recently proposed as a superior alternative to traditional bearings, such as lead-rubber bearings (LRB). In this paper the response of a multi-storied building with base isolator supplemented with a SMA wire is investigated. The isolated building is modelled as a shear type structure with lateral degree-of-freedom at each floor. The coupled differential equations of motion for the isolated system are derived and solved in the incremental form using Newmark's step-by-step method. The isolators are modelled by using two different mathematical models, using the Gresser-Cozzarelli Model for the SMA and the proposed SMA equivalent linear elastic-viscous model. The proposed equivalent model for the SMA is a modification of the AASHTO guideline specifications for the LRB. The responses obtained from isolated structure using these two models are compared. The variation of top floor absolute acceleration and bearing displacement for the isolated structure is computed to compare above models. It is observed that the proposed equivalent linear model for the SMA can predict with comparable accurate the response of the SMA nonlinear model. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
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