COMPUTES A BOLT TENSION FORCE BASED ON TORQUE¶
Converts a bolt tightening torque into either a bolt tension force or a bolt shank stress using the standard torque-force relationship (T = K × D × F), accounting for bolt diameter and friction coefficient. Use this worker whenever a structural or fastener preload needs to be derived from an applied torque value.
When to use¶
Classification: process.
Tagged: bolt, fastener, friction, math, preload, scalar, stress, tension.
Inputs¶
| Label | ID | Type | Default | Required | Description |
|---|---|---|---|---|---|
| torque | torque | scalar | — | ✓ | Applied tightening torque on the bolt (scalar, consistent units with bolt_diameter — e.g., N·mm or lbf·in); required and has no default, so must always be provided. |
| bolt_diameter | bolt_diameter | float | 1.0 | ✓ | Nominal shank diameter of the bolt (float, same length unit as torque — e.g., mm or in); defaults to 1.0, so override with the actual bolt diameter before use. |
| bolt_friction | bolt_friction | float | 0.2 | ✓ | Dimensionless friction (nut) factor K used in T = K × D × F (float, unitless); defaults to 0.2, which is a common dry-steel value — adjust for lubricated or coated fasteners. |
| return_type | return_type | string | force | ✓ | Selects whether the output is bolt tension ‘force’ (e.g., N or lbf) or ‘stress’ on the bolt shank cross-section (e.g., MPa or psi); defaults to ‘force’. |
Outputs¶
| Label | ID | Type | Description |
|---|---|---|---|
| math_torque_to_force_output_1 | math_torque_to_force_output_1 | scalar | Computed scalar result: bolt tension force (in the force unit consistent with the inputs) when return_type=’force’, or bolt shank axial stress when return_type=’stress’. |
Disciplines¶
- data.units
- engineering.structures
Runnable example¶
A runnable example is registered for this worker. Open the example workflow on the d3VIEW canvas: /api/workflow/example?id=math_torque_to_force
Auto-generated from transformation schema. Worker id: math_torque_to_force. Schema hash: 509de759a813. Hand-curated docs in workerexamples/ override this page when present.