Two-dimensional Elasticity Solutions For Analyzing Free Vibration Of Functionally Graded Porous Beams

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Le Quoc Cuong; Nguyen Ba Duy

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Journal Paper

Paper Information

Journal: MECHANICS OF ADVANCED COMPOSITE STRUCTURES Year:2025 | Volume:12 | Issue:1 Page(s): 235-248

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Information Journal Paper

Title

Two-dimensional Elasticity Solutions For Analyzing Free Vibration Of Functionally Graded Porous Beams

Author(s)

Le Quoc Cuong | Nguyen Ba Duy | Issue Writer Certificate

Keywords

vibration

Functionally graded porous beams

Two-dimensional elasticity

Porosity distributions

Abstract

A novel Two-dimensional elasticity solution is presented in this paper, specifically designed for studying the vibration of functionally graded porous (FGP) beams. The kinetics of the beam are defined by Two-dimensional elasticity theory, and Lagrange’s equations are used to derive the governing equations of motion. The Ritz method devises the expansion of displacement variables in polynomial and trigonometric series in the thickness and axial directions. Furthermore, microvoids can emerge as a result of technical issues during the manufacture of functionally graded materials (FGMs), leading to the development of porosities. The porosity distribution functions, one for three Porosity distributions: uniform porosity (UP), non-uniform porosity-I (NUP-I), and non-uniform porosity-II (NUP-II), are considered in the problem. This study investigates the impact of the gradation exponents (p) in the z-direction, the slenderness ratio (L/h), the distribution of porosity, the porosity coefficient (e), and various boundary conditions on the natural frequencies. A comparison with the findings from higher-order shear deformation theory (HSDT) validated the accuracy and effectiveness of the proposed methodology.

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