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Free Vibration Analysis of Asymmetric Buildings

by Sean Wilkinson, Queensland Univ of Technology, Brisbane,
David Thambiratnam, Queensland Univ of Technology, Brisbane,



Document Type: Proceeding Paper

Part of: Engineering Mechanics

Abstract:

A simple procedure for free vibration analysis of asymmetric buildings is presented. This method assumes that each floor is a rigid diaphragm with three degrees of freedom (two lateral and one rotational) and can analyse buildings which are unsymmetrical in plan and/or elevation. A numerical example is presented and the natural frequencies and associated mode shapes compared to the eccentricity.

Subject Headings: Vibration | Dynamic structural analysis | Asymmetry | Buildings | Floors | Equations of motion | Diaphragms (structural)

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