Equivalent Modal Damping Ratios of a Composite Tube-Type Tall Building to Dynamic Wind Loading | Zendy

Bin Huang | Zendy; K.M. Lam | Zendy; A.Y.T. Leung | Zendy; Y.K. Cheung | Zendy

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Equivalent Modal Damping Ratios of a Composite Tube-Type Tall Building to Dynamic Wind Loading

Author(s) -

Bin Huang,

K.M. Lam,

A.Y.T. Leung,

Y.K. Cheung

Publication year - 1996

Publication title -

shock and vibration

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.418

H-Index - 45

eISSN - 1875-9203

pISSN - 1070-9622

DOI - 10.1155/1996/608684

Subject(s) - damping ratio , structural engineering , modal , composite number , vibration , stiffness , tube (container) , computation , modal analysis , materials science , engineering , physics , mathematics , composite material , acoustics , finite element method , algorithm

This article discusses computing methods of the equivalent modal damping ratio for a composite tube-type tall building. The equivalent damping ratio of a composite structure under wind-induced vibrations encompasses the combined effects from the different values of damping, mass, and stiffness of the external and internal tubes. A detailed method incorporating Rayleigh damping and the transfer matrix method is proposed for the determination of the equivalent modal damping ratio. A simplified method for engineering applications is also proposed. Results for a 40-story building are presented exemplifying the computation and relationships between the properties of the external and internal tubes.

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