Paper number 682

A SIMPLE MODEL FOR THE ANALYSIS OF LAMINATED COMPOSITES WITH AND WITHOUT DELAMINATION

Andrew Makeev and Erian A. Armanios

School of Aerospace Engineering, Georgia Institute of Technology,
Atlanta, Georgia 30332-0150, USA

Summary

An approximate analytical elasticity solution for composite laminates undergoing a 3-D state of strain dependent on two coordinates is presented. The presence of delamination is accounted for. Simple and accurate approximations for interlaminar stresses and stiffness parameters are obtained for laminates subjected to axial extension and torsion. The model predictions are compared with existing analytical and numerical results.

Keywords

elasticity, laminated composites, delamination, interlaminar stresses.