CHEST VISCOUS¶
Computes the Viscous Criterion (VC) or chest compression speed from a raw chest deflection curve. The input curve is scaled by a user-supplied factor before applying the viscous injury formula, making it suitable for post-processing chest deflection time-histories from frontal or side-impact crash simulations.
When to use¶
Classification: process.
Tagged: VC, chest, chest_deflection, crash, injury_criteria, occupant_safety, scaling, viscous_criterion.
Inputs¶
| Label | ID | Type | Default | Required | Description |
|---|---|---|---|---|---|
| Curve To Be Scaled | curvetobescaled | vector | — | Raw chest deflection time-history curve (typically in mm vs. ms from a binout or physical-test channel) to be processed; leave unconnected only if testing the worker in isolation. | |
| Scale factor | scale_factor | scalar | 1.0 | Multiplicative scale factor applied to the input curve before the VC calculation (dimensionless); default 1.0 leaves the curve unchanged — adjust when units or sensor calibration require rescaling. | |
| Dummy Constant | dummyconstant | scalar | 1.0 | Proportionality constant used internally in the viscous-criterion formula (units depend on convention, default 1.0); change only when a non-standard VC formulation with a different normalisation constant is required. | |
| Return Type | return_type | scalar | vc | Selects the output quantity: ‘vc’ returns the Viscous Criterion curve (compression × speed, m/s), ‘speed’ returns only the chest compression speed curve; defaults to ‘vc’. |
Outputs¶
| Label | ID | Type | Description |
|---|---|---|---|
| VC | curve_vc_o | vector | Resulting time-history curve — either the Viscous Criterion (VC, in m/s) or the chest compression speed (m/s), depending on the selected return_type. |
Disciplines¶
- data.curve.transform
- engineering.crash.occupant_safety
Runnable example¶
A runnable example is registered for this worker. Open the example workflow on the d3VIEW canvas: /api/workflow/example?id=curve_chest_viscous
Auto-generated from transformation schema. Worker id: curve_chest_viscous. Schema hash: 3f83f46d76be. Hand-curated docs in workerexamples/ override this page when present.