Quick Answer
Calculate NVH Acoustic Enclosure Vibration Velocity Calculator
Calculator
Result Interpretation
NVH Acoustic Enclosure Vibration Velocity Calculator computes Vibration Velocity RMS in m/s using the defined engineering formula and the input values provided.
Worked Example
Verified calculation
Given:
- Effective Vibrating Mass = 7.2
- Structural Damping Ratio = 0.015
- Excitation Force Amplitude = 12.5
- Excitation-to-Natural Frequency Ratio = 0.95
- Enclosure Natural Frequency = 110
Expected Result:
- Vibration Velocity RMS = 1.6492318981958
Engineering Interpretation:
Under the given input conditions, the calculated result is: Vibration Velocity RMS = 1.6492318981958 m/s.
The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.
Formula / Method
vibration velocity rms = (excitation force amplitude / (2 * 3.14159265358979 * enclosure natural frequency * structural damping ratio * effective vibrating mass)) * sqrt(1 + pow((2 * structural damping ratio * excitation-to-natural frequency ratio), 2)) / sqrt(pow(1 - pow(excitation-to-natural frequency ratio, 2), 2) + pow(2 * structural damping ratio * excitation-to-natural frequency ratio, 2))Formula family: formula_nvh_acoustic_enclosure_vibration_velocity_calculator
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| force_amplitude | Excitation Force Amplitude | INPUT | Excitation Force Amplitude |
| natural_frequency | Enclosure Natural Frequency | INPUT | Enclosure Natural Frequency |
| damping_ratio | Structural Damping Ratio | INPUT | Structural Damping Ratio |
| mass | Effective Vibrating Mass | INPUT | Effective Vibrating Mass |
| frequency_ratio | Excitation-to-Natural Frequency Ratio | INPUT | Excitation-to-Natural Frequency Ratio |
| vibration_velocity | Vibration Velocity RMS | OUTPUT | Vibration Velocity RMS |
Calculation Steps
- Enter the excitation force amplitude in N.
- Enter the enclosure natural frequency in Hz.
- Enter the structural damping ratio in 1.
- Enter the effective vibrating mass in kg.
- Enter the excitation-to-natural frequency ratio in 1.
- Step 1: Compute vibration velocity rms.
- Read the vibration velocity rms (m/s) from the results.
Engineering Summary
Calculate NVH Acoustic Enclosure Vibration Velocity Calculator
Frequently Asked Questions
What does this calculator calculate?
The NVH Acoustic Enclosure Vibration Velocity Calculator estimates Vibration Velocity RMS based on the input parameters you provide
Why is excitation force amplitude important in this calculation?
excitation force amplitude is directly proportional to vibration velocity rms. When you enter excitation force amplitude in N, the calculator uses it in the engineering formula to compute the output
How should I interpret the result vibration velocity rms?
The calculator outputs vibration velocity rms in m/s. To convert to km/h, multiply the result by 3.6. The result is computed directly from the input values using the defined engineering formula
What units should I use for the inputs?
Enter each value in the units shown next to the input field: Excitation Force Amplitude (N), Enclosure Natural Frequency (Hz), Effective Vibrating Mass (kg). Make sure all inputs use the specified units for consistent results
What assumptions does this calculator use?
This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment
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