پذیرفته شده برای ارائه شفاهی

کد مقاله : 1158-ISAV2019 (R1)

¹Assistant Professor, School of Automotive Engineering, Iran University of Science and Technology, Tehran, Iran

²School of Automotive Engineering, Iran University of Science and Technology

In this study, the first attempt is made in order to investigate the nonlinear behavior of po-rous functionally graded nanobeam by considering the effects of thermal environment. The motion equations are derived using Hamilton principle in the framework of Euler-Bernoulli beam theory using von-Karman nonlinearity assumptions. It is supposed that the material properties of the nanobeam vary according to the power-law in the direction along the thickness. Besides, the properties are considered to be temperature-dependent. The partial differential equations are discretized using Galerkin-based method. Numerical results are presented to investigate the effect of various parameters such as nonlocal parameter, ampli-tude ratio, aspect ratio, power-law index, temperature change on the nonlinear frequency ra-tio of the porous FG nanobeam. It can be seen that the nonlinear frequency of porous FG nanobeam, is significantly influenced by these parameters.

Nonlinear vibration؛ Porosity؛ Thermal effect؛ Functionally-Graded (FG) Material

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