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beam.structlab.tech ↗
Beam Calculator
Exact closed-form Euler-Bernoulli analytical solver with reactions, shear, tension-side bending moments, and step-by-step equilibrium reports.
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frame.structlab.tech ↗
Frame Calculator
2D plane frame and truss structural solver based on the Direct Stiffness Method (DSM) with interactive canvas CAD modeling and internal hinges.
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section.structlab.tech ↗
Section Calculator
Cross-section geometric properties ($A, I_x, I_y, I_{xy}$), principal axes, ENA/PNA, and elastic Kern mapping via Green's Theorem polygon integrals.
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stress.structlab.tech ↗
Stress Calculator
BetaCross-sectional Normal Stress ($\sigma$), Jourawski Shear ($\tau$) with flange-web junction jumps, and von Mises ($\sigma_{vM}$) yield envelope analysis.
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