Stress in Machine Parts
Every stress in machine parts calculator on CalcEngines — each with its formula, a worked example, the standard it follows and the assumptions it makes.
4 calculators in this section
- Combined Bending and Axial Stress Calculatorσ = P/A ± M·c/I with both extreme fibres reported, so you can see whether the section is entirely in tension, entirely in compression or both — and the kern derived rather than quoted, which is where the middle-third rule comes from.
- Curved Beam Stress CalculatorWinkler's theory for hooks, C-frames and chain links: the neutral axis shifted off the centroid, the hyperbolic stress it produces, and how far wrong the straight-beam formula would have been.
- Section Properties CalculatorArea, both second moments, both section moduli, the centroid and the radii of gyration for eight machine-part shapes — with the polar second moment and the torsion constant printed separately, because they are not the same quantity for anything but a round bar.
- Torsion of Non-Circular Sections Calculatorα and β for a solid rectangle, Bredt–Batho for a closed thin wall, ⅓Σbt³ for an open one — and the same outline computed both ways, because an open section can be a thousand times less stiff in torsion than the closed one it came from.