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Resonant Frequency from Static Deflection   1/1, 1/3

Strutt|Vibration|Isolation Design|Resonant Frequency from Static Deflection calculates the resonant frequency (Hz) from the known static deflection (mm) of an isolator, given the static to dynamic stiffness ratio of the isolation material (Kstat/Kdyn). The calculated resonant frequency is inserted into Column F of the active row of the work sheet.

Strutt calculates the resonant frequency of the isolator using the following formula:

f_0 = 1/(2 pi)sqrt((K_r g)/(d//1000))

where:
f_0 is the resonant frequency of the isolator, Hz
K_r is the ratio of static to dynamic stiffness of the isolator
g = 9.81 \ m//s^2 is gravitational acceleration constant
d is the static deflection of the isolator, mm

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