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M. Morga¹, G.C. Marano² and R. Greco³

¹Mobility Department, Austrian Institute of Technology GmbH, Vienna, Austria
²Department of Civil Engineering and Architecture, Technical University of Bari, Italy
³Department of Civil Engineering, Environmental, Territory, Building and Chemical, Technical University of Bari, Italy

doi:10.4203/ccp.108.186

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M. Morga, G.C. Marano, R. Greco, "Optimization of Tuned Mass Dampers subject to Non-Stationary Random Excitation", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 186, 2015. doi:10.4203/ccp.108.186

Keywords: tuned mass damper, optimum design, stationary filtered white noise, non-stationary filtered white noise, covariance analysis.

Summary

This paper presents a stochastic approach for the optimum design of a single tuned mass damper (TMD) protecting a linear mechanical system. The optimum strategy is directed towards maximizing the effectiveness of the TMD in reducing the vibration level in the system to be protected. This performance is evaluated on the basis of the reduction of the root-mean-square displacement and acceleration of the main system. Several numerical analyses are carried out for assessing the influence of the system and the excitation characteristics of the optimum TMD. In particular, a comparison between the TMD optimum designs for a system excited by stationary and non-stationary filtered white noise is presented. Finally, the advantages of modelling the seismic excitation as non-stationary filtered white noise for the optimum TMD design are clearly stated.

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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: 108 PROCEEDINGS OF THE FIFTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: J. Kruis, Y. Tsompanakis and B.H.V. Topping Paper 186 Optimization of Tuned Mass Dampers subject to Non-Stationary Random Excitation M. Morga¹, G.C. Marano² and R. Greco³ ¹Mobility Department, Austrian Institute of Technology GmbH, Vienna, Austria ²Department of Civil Engineering and Architecture, Technical University of Bari, Italy ³Department of Civil Engineering, Environmental, Territory, Building and Chemical, Technical University of Bari, Italy doi:10.4203/ccp.108.186 purchase the full-text of this paper Full Bibliographic Reference for this paper M. Morga, G.C. Marano, R. Greco, "Optimization of Tuned Mass Dampers subject to Non-Stationary Random Excitation", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 186, 2015. doi:10.4203/ccp.108.186 Keywords: tuned mass damper, optimum design, stationary filtered white noise, non-stationary filtered white noise, covariance analysis. Summary This paper presents a stochastic approach for the optimum design of a single tuned mass damper (TMD) protecting a linear mechanical system. The optimum strategy is directed towards maximizing the effectiveness of the TMD in reducing the vibration level in the system to be protected. This performance is evaluated on the basis of the reduction of the root-mean-square displacement and acceleration of the main system. Several numerical analyses are carried out for assessing the influence of the system and the excitation characteristics of the optimum TMD. In particular, a comparison between the TMD optimum designs for a system excited by stationary and non-stationary filtered white noise is presented. Finally, the advantages of modelling the seismic excitation as non-stationary filtered white noise for the optimum TMD design are clearly stated. 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 £75 +P&P)
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