INTERFAIC / CALCULATE / ENGINEERING TOOLS
Engineering calculators
Explore practical mechanical engineering calculators for section geometry, stress, beam bending, shaft torsion and thermal expansion. Choose a tool to work through inputs, schematics and results, with equations and assumptions close at hand.
8 calculators across 6 categories
Geometry calculators
Section geometry, area properties and stock weight.
Stress calculators
Direct stress, strain and extension under load.
Beams calculators
Bending, deflection, positioned loads and elastic stability.
Shafts calculators
Torsional stress and twist in circular shafts.
Fasteners calculators
Fastener tools will appear here as they become available.
No fastener calculator is currently available in this module.
Thermal calculators
Free expansion and contraction under temperature changes.
Thermal expansion
Free length change under a uniform temperature change.
Geometry and loading
Input parameters
Results update as you edit.
Section output
Cz is measured from the left edge; Cy from the bottom edge. Iz is about the horizontal z-axis; Iy about the vertical y-axis. Izy uses the displayed positive z and y directions.
| Property | Value | Unit |
|---|
Results
Key values (for reference)
ⓘ Assumptions
Unrestrained, homogeneous member with constant expansion coefficient and uniform temperature change. Negative ΔT represents cooling. No restraint stress is calculated. A temperature difference of 1 K equals 1 °C.
Equations & calculation model
Lfinal = L + ΔL
εthermal = αΔT
Idealised calculations for preliminary design. Check geometry, loading and boundary conditions against your application.
What it is used for
Estimating free expansion or contraction from a uniform temperature change.
Standards & references
OpenStax University Physics: linear thermal expansion. Uses a constant expansion coefficient and uniform temperature change. Confirm the coefficient over the relevant temperature range; restraint stress is not included.