مقاله Natural frequencies determination of axially moving viscoelastic plates based on firstدرorder shear deformation theory با
مقاله Natural frequencies determination of axially moving viscoelastic plates based on firstدرorder shear deformation theory با word دارای 4 صفحه می باشد و دارای تنظیمات در microsoft word می باشد و آماده پرینت یا چاپ است
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سال انتشار: 1392
محل انتشار: هفتمین کنفرانس دانشجویی مهندسی مکانیک
تعداد صفحات: 4
چکیده:
In this paper, the natural frequencies of a thin axially moving viscoelastic plate have been calculated analytically based on the first-order shear deformationtheory. The plate translates axially along the longitudinal direction with a constant velocity between two pairs of rollers and it is subjected to a uniformtension at the both ends. The equations of motions, which are a system of partial differential equation, have been derived by using the Hamilton principle. It isassumed that the deflection of the plate and aspect ratio of b/L be small. The behavior of the viscoelastic plate has been defined with a three-parameter Zener model inshear and elastic in bulk. The wave solution method has been used to extract the natural frequencies from theequations of motions. Finally, a parametric study has been performed to investigate the effects of the translating speed, thickness and viscoelastic propertieson the natural frequencies of the structure. The effects of above- mentioned parameters on the first-four naturalfrequencies have been shown in the diagrams. The numerical results showed that the translating speed and thickness of the moving plate have no significant effecton first-four natural frequencies. Also, all frequencies are independent of E1 for E1<109.