3Zhang Q J,Sainsbury J M.The Galerkin element method applied to the vibration of rectangular damped sandwich plates[J].Computers and Structures,2000,74(3):717-730.
4Sainsbury M G,Zhang Q J.The Galerkin element method applied to the vibration of damped sandwich beams[J].Computers and Structures,1999,71(3):239-256.