. Analytical, . Bounds, and . Kelsey, usefull (optimization, preliminary design) but limited (loose bounds): neglects core/skin interaction Application of the Bending-Gradient theory to sandwich panels Quantification of the contrast assumption The Bending-Gradient is turned into a Reissner-Mindlin Proof of, 1958.

. Kelsey, usefull (optimization, preliminary design) but limited (loose bounds): neglects core/skin interaction Application of the Bending-Gradient theory to sandwich panels Quantification of the contrast assumption The Bending-Gradient is turned into a Reissner-Mindlin Proof of usefull (optimization, preliminary design) but limited (loose bounds): neglects core/skin interaction Application of the Bending-Gradient theory to sandwich panels Quantification of the contrast assumption The Bending-Gradient is turned into a Reissner-Mindlin Proof of, Application to the chevron pattern Brings out the critical effect of skin/core interaction Outlooks Strength analysis of sandwich panels under shear forces, 1958.

A. Lebée, Laboratoire Navier) Thick plates homogenization