Title

Finite Element Techniques for Modeling Sandwich Composites Subjected to a Transverse Distributed Load per ASTM-D6416

Document Type

Conference Proceeding

Date of Original Version

12-1-2003

Abstract

A finite element method that uses shell element face sheets that are tied appropriately to a brick element core to model sandwich composites is presented. This method is more computationally efficient than using brick elements alone and allows examination of local deformations that are normally lost due to the high level of kinematic assumptions inherit in the laminate composite shell element. Four different commercially available algorithms for tying the face sheets to the core are examined. All four implementations of this method accurately predict the response of five simply supported test panels subjected to a distributed load per the ASTM-D6416 test specification. A two-dimensional laminated composite shell finite element method and a classical method also accurately predicted the response of the test panels. The five sandwich panels had a variety of face sheet thicknesses, face sheet stiffnesses, and core stiffnesses. The finite element models are solved in both HKS/ABAQUS Standard and LS-Dyna3D. 1,2.

Publication Title

International SAMPE Symposium and Exhibition (Proceedings)

Volume

48 II

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