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논문 기본 정보

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학술저널
저자정보
Guha, T.K. (Department of Mechanical Engineering, The University of Auckland) Sharma, R.N. (Department of Mechanical Engineering, The University of Auckland) Richards, P.J. (Department of Mechanical Engineering, The University of Auckland)
저널정보
테크노프레스 Wind & structures Wind & structures 제16권 제1호
발행연도
2013.1
수록면
61 - 91 (31page)

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An analytical model of internal pressure response of a leaky and quasi-statically flexible building with a dominant opening is provided by including the effect of the envelope external pressure fluctuations on the roof, in addition to the fluctuating external pressure at the dominant opening. Wind tunnel experiments involving a flexible roof and different building porosities were carried out to validate the analytical predictions. While the effect of envelope flexibility is shown to lower the Helmholtz frequency of the building volume-opening combination, the lowering of the resonant peak in the internal and net roof pressure coefficient spectra is attributed to the increased damping in the system due to inherent background leakage and envelope flexibility. The extent of the damping effects of "skin" flexibility and background leakage in moderating the internal and net pressure response under high wind conditions is quantified using the linearized admittance functions developed. Analytical examples provided for different combinations of background leakage and envelope flexibility show that alleviation of internal and net pressure fluctuations due to these factors by as much as 40 and 15% respectively is possible compared to that for a nominally sealed rigid building of the same internal volume and opening size.

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