| 摘要 |
PURPOSE:To increase the degree of freedom for the layout and design by perceiving the water head effect via an orifice and allowing the orifice to be set in an optional shape with no limitation for the length/diameter ratio or the like. CONSTITUTION:A ratio SH/L, where SH is the area of an orifice and L is the effective length of the orifice expressed by adding the length via the water head effect to the length of the orifice, is determined based on the relationship among the resonant frequency omegan of a liquid, the shifting efficiency SE of the liquid per displacement, the density rho of the liquid, the shape parameter (a) of a mount, a constant (k) obtained by multiplying the static spring constant of the mount by the dynamic magnifying factor of an elastic rubber material, and the area SO of a main liquid chamber. Accordingly, the resonant frequency omegan of the liquid can be optionally selected by adequately selecting the SH/L ratio. |
