Analytical plate & column theory • Units: in, ksi, k (1000 lb)
BuckIO evaluates elastic buckling capacity for common structural elements. Pick the mode that matches your component, enter geometry and applied stress, and compare utilization against the critical value.
Overall flexural buckling of a compression member about its weak or strong axis. Uses slenderness KL/r and the column curve to find critical stress and axial capacity.
Uniform in-plane compression on a flat plate panel. Buckling wavelength depends on plate width, thickness, and edge restraint (k-factor).
Shear buckling of a web or plate panel under in-plane shear. Critical shear stress depends on panel aspect ratio and thickness.
Local buckling of a compression flange outstand (half-width from web to tip). Common in beams and built-up sections under bending or axial load.
Web slenderness check with axial compression and shear present together. Reports individual utilizations and a combined interaction index.
Buckling of thin sheet between rivet rows in built-up aircraft or sheet-metal joints. Sensitive to skin thickness and rivet spacing.
Linear elastic buckling only. No post-buckling, no geometric imperfection knockdown unless you apply it manually to applied stress.
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