System Stiffness Calculator

Calculate hydraulic system natural frequency from bulk modulus, fluid volume, and cylinder area

Input Parameters

Results

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Hydraulic Stiffness
lb/in
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Natural Frequency
Hz
--
Natural Frequency
rad/s
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Effective Bulk Modulus
psi

Reference

Kh = B_eff × A² / V (hydraulic spring rate) fn = (1/2π) × sqrt(Kh/m) Effective B = 1 / (1/B_oil + %air / P_system) 1% entrained air can reduce stiffness by 50%+