Buckling loads under combined longitudinal and transverse direct stress of flat sandwich panels. (Isotropic face plates and corrugated cores, all edges simply-supported.)
Abstract:The elastic buckling loads are presented graphically in terms of the overall dimensions of the panel and its flexural and transverse through-the-thickness shear stiffnesses. The loadings covered are either uniaxial in-plane compression alone or with a transverse in-plane tensile or compressive load. The data are applicable to sandwich panels with corrugated cores that have a shear stiffness through their thickness very much higher along the corrugations than across them. The panel length to width ratios covered are from 0.3 to 2.5 (approximately) and infinitely long panels. See ESDU 68029 for the background to the theory and for calculations of sandwich panel stiffnesses. See ESDU 81047 and ESDUpac A8147 or ESDU 94005 and ESDUpac A9405 for a computer program for calculation of buckling load.
|Data Item ESDU 67032|