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Vibration Isolation Calculator

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Input Parameters

Unit System

Results

Vibration Isolation

2
Static Deflection in
99
Isolation Efficiency %
2
Natural Frequency Hz

Calculation Steps

1

Calculate Spring Rate

Formula:
k=Wδtypicalk = \frac{W}{\delta_{typical}}
Calculation:
k=500.002k = \frac{500.00}{2}
Result:
250.00 lb/in250.00 \text{ lb/in}
2

Calculate Static Deflection

Formula:
δ=Wk\delta = \frac{W}{k}
Calculation:
δ=500.00250.00\delta = \frac{500.00}{250.00}
Result:
2.000 in2.000 \text{ in}
3

Calculate Natural Frequency

Formula:
fn=3.13×1δf_n = 3.13 \times \sqrt{\frac{1}{\delta}}
Calculation:
fn=3.13×12.000f_n = 3.13 \times \sqrt{\frac{1}{2.000}}
Result:
2.21 Hz2.21 \text{ Hz}
4

Calculate Operating Frequency

Formula:
fop=RPM60f_{op} = \frac{RPM}{60}
Calculation:
fop=180060f_{op} = \frac{1800}{60}
Result:
30.00 Hz30.00 \text{ Hz}
5

Calculate Frequency Ratio

Formula:
r=fopfnr = \frac{f_{op}}{f_n}
Calculation:
r=30.002.21r = \frac{30.00}{2.21}
Result:
13.55 13.55 \text{ }
6

Calculate Isolation Efficiency

Formula:
η=100×(1−1r2−1)\eta = 100 \times (1 - \frac{1}{r^2 - 1})
Calculation:
η=100×(1−113.552−1)\eta = 100 \times (1 - \frac{1}{13.55^2 - 1})
Result:
99.5 \text{ %}