Time-dependent behaviors of angle-ply laminates with viscous interfaces in cylindrical bending

A simply supported angle-ply laminated plate in cylindrical bending with viscous interfaces under static loading is studied. Because of the presence of viscous interfaces, the behavior of the laminate depends on the time variable, which complicates the analysis. A highly accurate analysis is proposed, in which no assumption on deformation is introduced. Concretely, the state-space formulations, which have been used extensively in laminated structural analyses, are employed. The variations of field variables with time are approximated using the power series expansions. Recurrence formulae that make for easier program are constructed. Numerical examples are finally presented and comparison with existing results shows a good agreement. Results also indicate that the behavior of the laminate is very sensitive to the presence of viscous interfaces.