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Dynamic analysis of composite beam subjected to harmonic moving load based on the third-order shear deformation theory

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Abstract

The response of an infinite Timoshenko beam subjected to a harmonic moving load based on the thirdorder shear deformation theory (TSDT) is studied. The beam is made of laminated composite, and located on a Pasternak viscoelastic foundation. By using the principle of total minimum potential energy, the governing partial differential equations of motion are obtained. The solution is directed to compute the deflection and bending moment distribution along the length of the beam. Also, the effects of two types of composite materials, stiffness and shear layer viscosity coefficients of foundation, velocity and frequency of the moving load over the beam response are studied. In order to demonstrate the accuracy of the present method, the results TSDT are compared with the previously obtained results based on first-order shear deformation theory, with which good agreements are observed.

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Correspondence to Mohammad Javad Rezvanil.

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Rezvanil, M.J., Kargarnovin, M.H. & Younesian, D. Dynamic analysis of composite beam subjected to harmonic moving load based on the third-order shear deformation theory. Front. Mech. Eng. 6, 409–418 (2011). https://doi.org/10.1007/s11465-011-0245-8

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  • DOI: https://doi.org/10.1007/s11465-011-0245-8

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