Mechanical Engineering Faculty Research

Title

Local Facesheet Pulse Buckling in a Curved, Composite Sandwich Panel

Document Type

Article

Publication Date

Fall 10-2013

Abstract

Local facesheet buckling of a curved sandwich panel subjected to external pressure pulse loading was investigated in this paper. Equations of motion for the facesheet transient deformations in the sandwich shell were derived from Lagrange’s equations of motion, and solutions using this approach compared well with FEA results from ABAQUS Standard. Both facesheet fracture during stable deformation response and local dynamic pulse buckling of facesheets were considered as possible modes of failure in the curved sandwich panel. Parametric studies indicated that local facesheets buckling is more likely to occur than facesheet fracture in thin and deep curved sandwich panels. The facesheet laminate layup can also be adjusted to improve the local buckling resistance of the curve panel.

Publication Title

Composite Structures

Volume

104

Issue

1

First Page

249

Last Page

260