Bending, Buckling and Vibration of a Functionally Graded Porous Beam Using Finite Elements
Author(s):
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
This study presents the effect of porosity on mechanical behaviors of a power distribution functionally graded beam. The Euler-Bernoulli beam is assumed to describe the kinematic relations and constitutive equations. Because of technical problems, particle size shapes and micro-voids are created during the fabrication which should be taken into consideration. Two porosity models are proposed. The first one describes properties in the explicit form as linear functions of the porosity parameter. The second is a modified model which presents porosity and Youngs modulus in an implicit form where the density is assumed as a function of the porosity parameter and Youngs modulus as a ratio of mass with porosity to the mass without porosity. The modified proposed model is more applicable than the first model. The finite element model is developed to solve the problem by using the MATLAB software. Numerical results are presented to show the effects of porosity on mechanical behaviors of functionally graded beams.
Keywords:
Language:
English
Published:
Journal of Applied and Computational Mechanics, Volume:3 Issue: 4, Autumn 2017
Pages:
274 to 282
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