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Paper
Title

Natural Frequency and Dynamic Analyses of Functionally Graded Saturated Porous Beam Resting on Viscoelastic Foundation Based on Higher Order Beam Theory

فصلنامه مکانیک جامد، دوره: 11، شماره: 3
Year: 1398
COI: JR_JSMA-11-3_011
Language: EnglishView: 234
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Authors

M Babaei - Department of Mechanical Engineering, Shahid Beheshti University, Tehran, Iran
K Asemi - Department of Mechanical Engineering, Islamic Azad University, Tehran North Branch, Tehran, Iran
P Safarpour - Department of Mechanical Engineering, Shahid Beheshti University, Tehran, Iran

Abstract:

In this paper, natural frequencies and dynamic response of thick beams made of saturated porous materials resting on viscoelastic foundation are investigated for the first time. The beam is modeled using higher-order beam theory. Kelvin-voight model is used to model the viscoelastic foundation. Distribution of porosity along the thickness is considered in two different patterns, which are symmetric nonlinear and nonlinear asymmetric distributions. The relationship between stress and strain is based on the Biot constitutive law. Lagrange equations are used to express the motion equations. Finite element and Newark methods are used to solve the governing equations. The effect of different boundary conditions and various parameters such as porosity and Skempton coefficients, slenderness ratio as well as stiffness and damping coefficients of viscoelastic foundation on natural frequency and transient response of beam have been studied. Results show that in a drained condition, beam has smallest fundamental frequency and by increasing the Skempton coefficient, the fundamental frequency of the beam increases.

Keywords:

Paper COI Code

This Paper COI Code is JR_JSMA-11-3_011. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/999232/

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Babaei, M and Asemi, K and Safarpour, P,1398,Natural Frequency and Dynamic Analyses of Functionally Graded Saturated Porous Beam Resting on Viscoelastic Foundation Based on Higher Order Beam Theory,https://civilica.com/doc/999232

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Type of center: دانشگاه دولتی
Paper count: 25,460
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