Mechanical Engineering Faculty Research

Title

Foam-Core, Curved Composite Sandwich Panels under Blast

Document Type

Article

Publication Date

Spring 5-2013

Abstract

An elastic-plastic model was developed for predicting the blast response of a foam-core, curved composite sandwich panel. A multi-layered approach was used to distinguish facesheets and core deformations. Core compressibility and transverse shear through the thickness were accounted for using linear displacement fields through the thickness. The predicted solution from the elastic-plastic model was shown to compare well with FEA from ABAQUS Implicit. A parametric study showed that blast resistance of the sandwich shell is increased by allowing cores to undergo plastic crushing. Very thick and shallow shells derive much of their resistance to blast from core crushing. Strong, dense foam cores did not increase the blast resistance of the curved sandwich panel but allowed facesheets to fracture while the core remained elastic.

Publication Title

Journal of Sandwich Structures and Materials

Volume

15

Issue

3

First Page

261

Last Page

291

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