INIQUI   05448
INSTITUTO DE INVESTIGACIONES PARA LA INDUSTRIA QUIMICA
Unidad Ejecutora - UE
artículos
Título:
A general Ritz formulation for the free vibration analysis of thick trapezoidal and triangular laminated plates resting on elastic supports.
Autor/es:
MARIA V. QUINTANA; LIZ G. NALLIM
Revista:
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2013 vol. 69 p. 1 - 9
ISSN:
0020-7403
Resumen:
A general variational formulation for the determination of natural frequencies and mode shapes offree vibration of symmetric laminated plates of trapezoidal and triangular shapes is presented in thiswork. The kinematics corresponding to the first order shear deformation plate theory (FSDT) isused to take into account the effects of shear deformation and rotatonial inertia in the analysis.The developed approach is based on the Ritz method and the plate geometry is approximated bynon-orthogonal right triangular co-ordinates. The transverse deflection and two rotations of thelaminate are independently approximated by sets of simple polynomials.The algorithm allows obtaining approximate analytical solutions for laminated plates with differentshapes, aspect ratio, number of layers, stacking sequence, angle of fiber orientation and boundaryconditions including translational and rotational elastically restrained edges. The algorithm issimple to program and numerically stable.