Abstract
The theoretical solution of the transient response of the wind-induced internal pressure based on assuming the external pressure is simple harmonic excitation by the linear equation governing the dynamics of internal pressure was presented. The effect of orifice loss coefficient, opening angle, the opening ratio and background porosity factor (Pf) on the transient internal pressure character was analyzed. The result shows: the peak value of the transient internal pressure and the overshooting ratio decreases with the increase of the orifice loss coefficient; the opening angle decides the overshooting effect. The overshooting ratio increases with the opening ratio and presents a decreasing trend while Pf increases; the effect of these factors on steady internal pressure is relatively small.
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