Quick Answer
Calculate NVH Shaft System Vibration Velocity Calculator
Calculator
Result Interpretation
NVH Shaft System 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:
- Critical Damping Ratio = 0.025
- Shaft System Natural Frequency = 45
- Peak Displacement Amplitude = 2.5E-6
- Normalized Excitation Frequency (f/fn) = 0.98
Expected Result:
- Vibration Velocity (RMS) = 0.0011245700367043
Engineering Interpretation:
Under the given input conditions, the calculated result is: Vibration Velocity (RMS) = 0.0011245700367043 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
RMS = 2.0 * 3.14159265358979 * shaft system natural frequency * peak displacement amplitude * sqrt(1.0 + pow((2.0 * critical damping ratio * f/fn) / (1.0 - pow(f/fn, 2.0)), 2.0))Formula family: formula_nvh_shaft_system_vibration_velocity_calculator
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| natural_frequency | Shaft System Natural Frequency | INPUT | Shaft System Natural Frequency |
| displacement_amplitude | Peak Displacement Amplitude | INPUT | Peak Displacement Amplitude |
| damping_ratio | Critical Damping Ratio | INPUT | Critical Damping Ratio |
| excitation_frequency_over_natural_frequency | Normalized Excitation Frequency (f/fn) | INPUT | Normalized Excitation Frequency (f/fn) |
| vibration_velocity | Vibration Velocity (RMS) | OUTPUT | Vibration Velocity (RMS) |
Calculation Steps
- Enter the shaft system natural frequency in Hz.
- Enter the peak displacement amplitude in m.
- Enter the critical damping ratio in 1.
- Enter the normalized excitation frequency (f/fn) in 1.
- Step 1: Compute vibration velocity (rms).
- Read the vibration velocity (rms) (m/s) from the results.
Engineering Summary
Calculate NVH Shaft System Vibration Velocity Calculator
Frequently Asked Questions
What does this calculator calculate?
The NVH Shaft System Vibration Velocity Calculator estimates Vibration Velocity (RMS) based on the input parameters you provide
Why is shaft system natural frequency important in this calculation?
shaft system natural frequency is directly proportional to vibration velocity (rms). When you enter shaft system natural frequency in Hz, 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: Shaft System Natural Frequency (Hz), Peak Displacement Amplitude (m). 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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