抄録
A multilayer (ML) plate/shell finite element (FE) has been developed for free vibration and damping analysis of composite laminates with delaminations. In the present FE formulation, the penalty method is invoked for modeling the un-delaminated/delaminated states at the lamina interfaces. By using the developed FE program, natural resonant frequencies, modal shapes and modal loss factors in the broad range of frequency for CFRP quasi-isotropic cantilever beams with a single delamination introduced at the central interface were numerically obtained and compared to the existing experimental results.
