Engineering module
Extension Spring
Closed-form or FEM estimates without a specific design code claim. Applies recommended default units when you change standard; unit dropdowns stay fully editable.
Extension spring
Helical extension spring with initial tension estimate.
Extension springs
Includes indicative initial tension estimate. Confirm hook stress and loop geometry separately. Rate uses the same helical spring formula as compression springs.
Export extension spring results
Export spring rate, initial tension and stress summary.
Module quality
60%Unit integrity
All solver inputs/outputs normalized and converted through shared unit contracts.
Physics validation
Engines expose explicit validation and solver-check metadata.
Chart conformance
Plots use shared professional styling and consistent axis/legend language.
Pictorial input/output
Module includes schematic inputs and color-coded output visualizations.
Export consistency
Reports include the same KPIs, units, and visuals as on-screen results.
Enter spring geometry and calculate.