Description
Return nominal cushion compression and displaced volume.
Conservation measurements separate nominal material composition, contact geometry, expansion and mechanical response. A volume fraction or clearance term evaluates supplied properties under a limited model; actual material compatibility, treatment effects and object stability require examination and specialist judgment.
Return nominal cushion compression and displaced volume.
When to use this tool
Use Artifact Cushion Compression Thickness Term when checking the stated conservation material, dimensional or mechanical term.
How to use the tool and how it works
- Enter freeThickness, installedThickness, cushionArea. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read compression, compressionFraction, displacedVolume. Use the output convention below.
Return nominal cushion compression and displaced volume. Require freeThickness > 0, installed thickness within it and area >= 0; compression = free-installed, fraction = compression/free, displacedVolume = compression*area.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| freeThickness | Free Thickness | Required. Finite number; strictly above 0. |
| installedThickness | Installed Thickness | Required. Finite number; minimum 0. |
| cushionArea | Cushion Area | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| compression | Compression | Required. Finite number. |
| compressionFraction | Compression Fraction | Required. Finite number. |
| displacedVolume | Displaced Volume | Required. Finite number. |
{
"input": {
"freeThickness": 10,
"installedThickness": 8,
"cushionArea": 100
},
"output": {
"compression": 2,
"compressionFraction": 0.2,
"displacedVolume": 200
}
}Limitations and assumptions
- This assumes constant area without modeling bulging, stiffness, shock absorption or safe packing conditions.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use calibrated measurements, representative material tests and qualified conservation/engineering assessment before actual treatment, mounting or handling.
References
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