Thin skins, spars, and stiffened panels often fail by buckling before material yield. HENSTRUCT covers linear eigen buckling and spherical Riks post-buckling past λ_cr.
Linear eigen first
Identify critical eigenvalues and mode shapes. Confirm mesh refinement near expected buckle wavelengths before you trust λ_cr for sizing.
Post-buckling with Riks
When the programme must understand collapse load and post-critical stiffness, use arc-length continuation rather than stopping at the first eigenmode.
Review habits
Document imperfections assumptions, BC realism, and whether composites criteria were active. Buckling MoS without context fails design review.
How HENSTRUCT helps you act
Pair buckling with linear static and composites paths. License HENSTRUCT worldwide via Contact.