Three-Dimensional Non-Linear Laminate Media Analysis

Lam3DNL is an advanced software tool designed to predict the nonlinear stress/strain response and failure behaviour of composite laminates

Lam3DNL Interface

Nonlinear lamina constitutive relations for the composites are represented using the Ramberg-Osgood equation [3]. Piece-wise linear increments in laminate stress and strain are calculated and superimposed to formulate the overall effective nonlinear response. Individual ply stresses and strains are monitored to calculate instantaneous ply stiffnesses for the incremental solution and to establish ply failure levels. The progressive-ply failure approach allows for stress unloading in a ply and discrimination of the various potential modes of failure.