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Author

Yat Fung Ho

Date of Award

8-2009

Degree Type

Thesis

Degree Name

Master of Applied Science (MASc)

Department

Civil Engineering

Supervisor

K.S. Sivakumaran

Co-Supervisor

Michael J. Tait

Language

English

Abstract

Dynamic absorbers, including the tuned mass damper (TMD) and the tuned liquid damper (TLD) , have been widely used in buildings to attenuate dynamic response. As the complexity of buildings increases, their response may become susceptible to torsional motion. The induced torsional motion can be suppressed by utilizing TMDs or TLDs. As such, the performance of different absorber arrangements are important for torsionally coupled structures. Also, a rapid design tool to reduce the computational effort for the design of the absorbers optimal parameters in torsionally coupled system is essential.

In this study, the performance of different TMD/TLD configurations under both random and harmonic excitation are studied and evaluated. The effectiveness of the absorber configurations considered is accessed by the response reduction factor, which is defined as the ratio of the response of structure equipped with absorber(s) to the response of structure without absorber(s). Also, a preliminary design tool to determine optimal TMD parameters is developed by introducing the concept of a generalized structure-TMD system.

McMaster University Library

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