Analysis of Vibrations  and Dynamics of Sandwich Panels Under  Dynamically Moving Loads<br/><br/>

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Analysis of Vibrations and Dynamics of Sandwich Panels Under Dynamically Moving Loads

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 39958 (08)
University: Sharif University of Technology
Department: Mechanical Engineering
Advisor(s): Ahmadian, Mohammad Taghi
Abstract:
The purpose of this project is the analysis of free and forced vibrations of sandwich panels under moving loads. In order to analyze the problem, sandwich panels are modeled as composite square plates. By using third order shear deformation theory, equations of motion are derived. Equations of motion with six different boundary conditions are solved utilizing generalized differential quadrature method. Natural frequencies are obtained for simple cases reported in the literature.In addition, a sandwich panel under moving load with simply supported boundary conditions is analyzed and time series response of the middle point is obtained. The time series response is also studied parametrically for different parameters such as velocity of the moving load and length to thickness ratio of the panel. Finally, the effect of the thickness of the panel on the precision of the calculated natural frequencies is studied. Also, parametric study is performed in order to understand the influence of individual parameters on system behaviour.
Keywords:
Natural Frequency ; Moving Loads ; Sandwich Panel ; Generalized Diffrential Quadrature

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