High Velocity Impact Of A Composite
Sandwich Panel
Author(s)
M. S. Hoo Fatt & D. Sirivolu
Abstract
Analytical solutions for the deformation response of a composite sandwich panel
subjected to high velocity impact by a rigid blunt, cylindrical projectile are
presented. The solution is derived from a two degrees-of-freedom model for the
sandwich panel involving local indentation, core crushing and global
bending/shear deformations. An example is given for a composite sandwich
panel consisting of orthotropic E-glass vinyl ester facesheets and PVC H100
foam core and subjected to the high velocity impact of a blunt cylindrical
projectile. The analytical solution for the local indentation and global deflection
under the projectile was found to be within 15% of FEA results.
Keywords: high velocity impact, composite sandwich panels, analytical model.
1 Introduction
Light weight composite sandwich panels are becoming more widely used in
military transport vehicles because they offer greater load bearing capabilities
per unit weight and easier maintenance. In some instances, these composite
sandwich panels may be subjected to high velocity impact from flying debris
from a nearby explosion. While there has been much research on the low
velocity impact of composite sandwich panels, very few papers deal with the
issue of the high velocity impact of composite sandwich panels [1,2]. The
objective of this paper is to develop an analytical model for the deformation
response of a composite sandwich panel subjected to high velocity impact by a
rigid blunt, cylindrical projectile. Only the mechanical constitutive equations for
the facesheet and core are considered in this paper because the thermomechanical
equations of state for them are presently unknown.
Keywords
high velocity impact, composite sandwich panels, analytical model.
Related Book
Other papers in this volume
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