Optimal placement of dampers and actuators based on stochastic approach

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Optimal placement of dampers and actuators based on stochastic approach

Franklin Y. Cheng¹, Hongping Jiang² and Xiaozhe Zhang¹

Department of Civil Engineering, University of Missouri-Rolla, Rolla, Missouri 65409,USA
Technical Development Department, Magnatrax Corporation, 124 Kirby Drive, Portland, TN 37148, USA

Abstract: A general method is developed for optimal application of dampers and actuators by installing them at optimal location on seismic-resistant structures. The study includes development of a statistical criterion, formulation of a general optimization problem and establishment of a solution procedure. Numerical analysis of the seismic response in time-history of controlled structures is used to verify the proposed method for optimal device application and to demonstrate the effectiveness of seismic response control with optimal device location. This study shows that the proposed method for the optimal device application is simple and general, and that the optimally applied dampers and actuators are very efficient for seismic response reduction.

Keywords: optimal device placement; dampers; actuators; seismic response control; stochastic seismic response; seismic-resistant structures; equivalent modal analysis

Copyright© 2009 IEM. Journal of Earthquake Engineering and Engineering Vibration. All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as described below, without written permission from the Publisher. Copying of articles is not permitted except for personal and internal use, to the extent permitted by national copyright law, or under the terms of a license issued by the National Reproduction Rights Organization of China.