EFFECTS OF DELAMINATION ON GUIDED WAVE PROPAGATION IN LAMINATED COMPOSITE BEAMS – NUMERICAL SIMULATION

Konferensbidrag (offentliggjort, men ej förlagsutgivet), 2017

In this study, three methods are used to model guided wave propagation in composite laminate including delamination. First, the model is created using 3D solid elements and delamination is applied between the plies. Next, composite laminate is modelled by homogenizing the material properties into a single layer with 3D shell elements. Delamination is applied using duplicate node method (DNM) and stiffness reduction method (SRM). The three models are compared by comparing the wave pattern, time signal and wave velocity. Results show SRM can be used as the most efficient method with reasonable accuracy to model wave propagation in large and complicated structures.