Abstract
Hybrid elastomer/composite sandwich plate structures are typically used where simultaneously both lateral stiffness and shear flexibility are required. In these hybrid structures, however infinitesimal strains take place in laminated composite layers, but elastomer layer is under hyper-elastic strains. The present work aims to adapt an individual two-step technique to examine three-dimensional stress field in this plate to observe free-edge effects in composite layers. For this purpose, at the first step, employing elastic equivalent properties for the composite layers and nonlinear elastic properties for elastomer layer, large deformation finite element analysis is performed for the hybrid structure by ameliorate an available open source code named FLagSHyp. This analysis provides the load distribution at elastomer-composite interface. Next, using this external load distribution on composite layers, based on Kantorovich technique a detail analysis is proposed to study free edge effect in composite layer. The results are verified numerically and/or experimentally and vital observations involving free-edge effects are reported.
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