Whole-Body Vibration VDV Estimate Calculator
Compute fourth-power weighted acceleration exposure VDV from explicitly represented constant-value bins; preserves transients instead of assuming one RMS crest factor, no ISO weighting filter or vibration safety approval.
Description
Vibration dose value weights acceleration to the fourth power.
Vibration dose value weights acceleration to the fourth power. Represented transient bins differ from a single RMS summary.1
Enter aligned nonempty finite already weighted acceleration bins and nonnegative represented seconds. Return modeled VDV and total represented duration; signed accelerations contribute equally by fourth power.
When to use Whole-Body Vibration VDV Estimate Calculator
Use Whole-Body Vibration VDV Estimate Calculator when you need to evaluate the supplied records under the calculation and evidence rules below. No frequency weighting, raw-signal reconstruction or exposure-safety determination is performed.
Prepare measured task, body, furniture or already weighted exposure records. Supply independently verified caller policies, tables and comparison limits with matching units and conditions.
How to use Whole-Body Vibration VDV Estimate Calculator and understand its results
- Prepare measured task, body, furniture or already weighted exposure records. Supply independently verified caller policies, tables and comparison limits with matching units and conditions.
- Enter representativeWeightedAccelerationMPerS2, representedSeconds using the field table and calculation rules, then run the tool.
- Read modelVibrationDoseValue, representedDurationSeconds. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| representativeWeightedAccelerationMPerS2 | Representative weighted acceleration m per s2 | list of number | Required |
| representedSeconds | Represented seconds | list of number | Required |
Enter aligned nonempty finite already weighted acceleration bins and nonnegative represented seconds. Return modeled VDV and total represented duration; signed accelerations contribute equally by fourth power.
VDV=(sum(acceleration^4×seconds))^(1/4) Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| modelVibrationDoseValue | Model vibration dose value | number |
| representedDurationSeconds | Represented duration seconds | number |
{
"input": {
"representativeWeightedAccelerationMPerS2": [
1,
2
],
"representedSeconds": [
16,
1
]
},
"output": {
"modelVibrationDoseValue": 2.378414230005442,
"representedDurationSeconds": 17
}
}Limitations and assumptions
No frequency weighting, raw-signal reconstruction or exposure-safety determination is performed.
Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 10,000 entries; string lists to 128 strings of at most 128 characters each. The rules above may impose smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use Seat Effective Amplitude Transmissibility Factor Lookup: Seat effective amplitude transmissibility compares time-weighted seat and floor RMS measurements. Both histories must share weighting conventions. For a complementary task, use Hand-Arm Vibration A(8) Daily Exposure Calculator: A(8) normalizes the squared vector sum of already weighted hand-arm acceleration to eight hours. Raw axes need prior frequency weighting.
References
Similar or alternative tools
- Seat Effective Amplitude Transmissibility Factor Lookup
Seat effective amplitude transmissibility compares time-weighted seat and floor RMS measurements. Both histories must share weighting conventions.
- Hand-Arm Vibration A(8) Daily Exposure Calculator
A(8) normalizes the squared vector sum of already weighted hand-arm acceleration to eight hours. Raw axes need prior frequency weighting.