Accession Number : ADA189743

Title :   The Buckling and Vibration of Composite Plates Using the Levy Method Considering Shear Deformation and Rotary Inertia.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : Palardy, Real F

PDF Url : ADA189743

Report Date : Dec 1987

Pagination or Media Count : 119

Abstract : An analytical study is conducted to determine the stability and free vibration characteristics of laminated anisotropic plates using the Levy approach. Included in the plate model are the effects of shear deformation and rotary inertia. Six different boundary conditions in the y direction analyzed in conjunction with simply-supported boundaries in the x direction. The y directed boundaries considered are simple-simple, clamped-clamped, simple-clamped, simple-free, clamped-free, and free-free. Solutions are presented for the buckling loads and natural frequencies of rectangular, graphite-epoxy symmetric plates. The results indicate the importance of including shear effects and rotary inertia in a plate's mathematical model. The overall importance of these equation parameters is definitely a function of the boundary condition and a general statement cannot be made. In addition, the effectiveness of the Levy technique, in studying laminated problems, becomes apparent in handling the more complicated boundaries as compared to the Galerkin or Rayleigh-Ritz techniques.

Descriptors :   *BUCKLING, *DEFORMATION, *LAMINATES, *ROTATION, *VIBRATION, *COMPOSITE MATERIALS, ANISOTROPY, COMPOSITE STRUCTURES, EPOXY RESINS, GRAPHITED MATERIALS, INERTIA, LOADS(FORCES), MATHEMATICAL MODELS, PLATES, RESONANT FREQUENCY, SHEAR PROPERTIES, SYMMETRY, TRANSVERSE WAVES, STRENGTH WEIGHT RATIO, FINITE ELEMENT ANALYSIS, THESES

Subject Categories : Laminates and Composite Materials
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE