Vibration characteristics of simply supported pyramidal lattice sandwich plates on elastic foundation: Theory and experiments

In this paper, an effective theoretical method is developed and experimentally validated for investigating the vibration behaviors of the simply supported sandwich plates with a pyramidal truss core on elastic foundation. An adjustable sliding support frame that can adapt to variations in the plate length and width is designed to realize the simply supported boundary conditions. The kinematic relations of the sandwich plates are derived, and the...