Optimum Design Of Tuned Mass Damper
Systems For Seismic Structures
Author(s)
I. Abdulsalam, M. Al-Janabi & M. G. Al-Taweel
Abstract
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.
Keywords: tuned mass damper, control of structures, optimum design,
earthquake time-history, optimum design.
1 Introduction
The tuned mass damper (TMD) system represents an important type of passive
control devices of structures subjected to dynamic loads. It can be installed to
new or existing structures to improve their resistance to earthquakes and winds.
A TMD system consists of a mass, a spring and a damper. If these properties are
properly designed and selected, then the TMD device can be effective in
suppressing undesirable vibrations induced by earthquake or wind loads.
Keywords
tuned mass damper, control of structures, optimum design,
earthquake time-history, optimum design.
Related Book
Other papers in this volume
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