Influence of application of sandwich panel on static and dynamic behaviour of ferry ro-ro ramp door

The implementation of a sandwich panel on the marine structure needs better knowledge mechanical behaviour, primarily static and dynamic response. response is investigated due to application ferry ro-ro ramp door using finite element software ABAQUS. Five modification models different thickness stiffener configuration were compared analysis analyze comparison structural strength weight saving. Additionally, was also debonding problem. influence ratio, geometry, number debonding, depth, location, boundary condition carried out. Debonding estimated by free vibration where Lanczos method for Eigen values extraction applied. Result showed that Model C caused an increase in ratio existing model. Furthermore, natural frequency being calculated as modal parameters investigate debonded model decreased discontinuity damaged area. change can be performed health monitoring technique.