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Wednesday, July 10 • 10:30 - 13:00
VIBRATION AND SOUND RADIATION ANALYSIS OF COMPOSITE LAMINATED PLATES UNDER THERMAL ENVIRONMENT

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This paper presents a simple closed form solution for vibration and sound radiation of composite laminated plates in thermal environment. The Hamilton's principle is employed to formulate the equation of motion of laminated heated plates. The free and forced vibration of the plate is analytically examined by the separation of variables method. The frequency equations and mode functions for the laminated heated plates with any combination of simply supported and clamped boundary conditions can be readily obtained. Based on the Rayleigh integral method, sound radiation from the laminated plate under harmonic excitation is also analyzed. To validate the proposed formulation, a considerable number of numerical examples are carried out for the modal, dynamic and acoustic analysis of laminated plates with different combinations of thermal loads and boundary conditions. An excellent agreement can be observed between the obtained results and those from FEM/BEM. The effects of temperature on the vibration and acoustic characteristics of laminated plates are also presented.


Wednesday July 10, 2019 10:30 - 13:00 EDT
St-Laurent 3, Board 12-A
  T07 Struct. dyn. & nonlin. vib., RS03 Struct ac & vibr

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