04.1 - Aerospace Grade Materials, Structural Analysis, Fatigue and Damage Tolerance
ASSESSMENT OF FAILURE UNDER LONGITUDINAL COMPRESSION OF UNIDIRECTIONAL COMPOSITES WITH IN-PLANE FIBER MISALIGNMENT
A.R. de Faria, ITA, Brazil
This work employs a micromechanical theory, kinematic relationships and an incremental approach to describe the displacement field in individual unidirectional composite plies. The Ramberg-Osgood relations are used to correct degraded mechanical properties of the resin in the nonlinear regime. The Hashin-Rotem failure criterion and experimental data previously obtained validate the technique.