Tag
stress
2 posts
June 6, 2026
When stiffness, not strength, kills the panel
Thin panels go unstable long before they run out of strength, and the linear eigenvalue load FE hands you is an optimistic upper bound, not an answer. Notes on eigenvalue versus post-buckling, stiffener pitch, boundary conditions, and imperfection knockdowns.
May 16, 2026
Thermal stress, the load case people forget
Constrained thermal expansion makes real stress with no external load on the part. Why a free part sees nothing, what alpha-delta-T-E buys you as a sanity check, CTE mismatch in joints, and why you can't always just add it to the mechanical case.