An Investigation of Power Flow Mechanism in Beam-plate Built-up Structures with an Energy-absorbing Plate

摘要: In the built-up structure consisting of a stiff beam and flexible plate, Grice showed that plate behaves as an energy absorber in narrow frequency bands(called blocking effect). This paper deals with such beam-plate coupled structures, where is excited path. It found dissipation can occur relatively broad bands, if different stiffnesses are used rectangular plate. was experimentally verified by Heckl energies terms one-third octave band averages transferred to plate(or dissipated plate) increase for increased damping. Paper, however, shows absorption suddenly reduces at certain bands damping effect upon maximum. Also, order minimize transfer through averages, it advantageous closer excitation point All these results based on wane method.