STATIC BEHAVIOUR OF THE SANDWICH COMPOSITE PLATES

Abstract

In this paper an analytical study and numerical modeling of the static behavior of the structure of multi-layer sandwich (various shells and core of honeycomb polypropylene and polystyrene) are presented. Various geometries and materials are used so for skins and for core. We have been analyzed 40 cases of composite sandwich structures of which 20 are be analyzed using Shell 3L plane plate elements and the other 20 have been analyzed using SOLID L elements. Sandwich structure consists of a surface structure, of multi-layer style, made of three layers: two layers of skin referred to as "coatings" forming the support structure (plate), layers composed of rigid and resistant material; an intermediary layer called the core aimed to connect shells.The results obtained by numerical simulation of both cases of modeling (Shell3L and SolidL) are compared and certain differences occurred.