Optimum design of tuned mass damper systems for seismic structures

摘要

Tuned mass dampers are well known devices for the passive control of vibrations in buildings subjected to earthquake loadings. Various methods have been proposed for the design of tuned mass damper (TMD) systems. In the present work, a method is suggested for obtaining the values of the parameters required for designing an efficient TMD system when attached to a SDOF system. In this method, the values of the optimum frequency ratio and optimum damping ratio for the TMD system are defined as the values that will reduce the maximum displacement of the structure to a minimum value when subjected to a specific earthquake time-acceleration history. For this purpose, a MATLAB computer program is developed. The program consists of a dynamic analysis subroutine embedded in a nonlinear constrained optimization program. The suggested method is used in selected case studies showing its efficiency when compared to other methods for designing TMD systems attached to SDOF systems.