### Robustness of Optimum TMDs According to Change of the Stiffness of the Structure

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#### Abstract

Robustness of tuned mass dampers (TMDs) is an important issue in seismic control of civil structures, because several assumptions and nonlinear characteristics can change the parameters of the structures. For that reason, this paper investigates the robustness of TMDs for the change of stiffness of the structure. A tuned mass damper optimized by using harmony search method was investigated for all possible optimum values in harmony memory matrix. According to the results, optimum TMD parameters are more robust for the increase of stiffness than the decrease of the stiffness. *Copyright © 2014 Praise Worthy Prize - All rights reserved.*

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