THE EFFECT OF NONHOMOGENEOUS PARAMETER ON STRESS INTENSITY FACTOR IN A CRACKED LAYER IN FUNCTIONALLY GRADED MATERIAL UNDER THERMAL STRESSES

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TAVAKKOLI FARZIN; GHAJAR RAHMATOLLAH

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Journal: Modares Mechanical Engineering Year:2016 | Volume:15 | Issue:11 Page(s): 275-283

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Information Journal Paper

Title

THE EFFECT OF NONHOMOGENEOUS PARAMETER ON STRESS INTENSITY FACTOR IN A CRACKED LAYER IN FUNCTIONALLY GRADED MATERIAL UNDER THERMAL STRESSES

Author(s)

TAVAKKOLI FARZIN | GHAJAR RAHMATOLLAH | Issue Writer Certificate

Keywords

ORTHOTROPIC FGMSQ2

STRESS INTENSITY FACTORQ2

INTERNAL CRACKQ2

GENERALIZED DIFFERENTIAL QUADRATURE ELEMENTQ2

METHODQ2

Abstract

In this paper, the effect of nonhomogeneous parameter in orthotropic Functionally Graded Material (FGM) in a cracked layer is investigated. It is assumed that the mechanical and thermal properties of material are dependent on x-coordinate (collinear with crack surfaces) in exponential form. The problem is solved for internal and edge crack in two ways, integral equations and generalized differential quadrature METHOD. Thermal loading is such that temperature distribution in the layer is uniform. Because of variation in mechanical and thermal properties, stress distribution due to this loading is not uniform. In the solution of problem with integral equations METHOD, first, thermo-elasticity problem with no cracks and then isothermal crack problem are separately solved. Afterward, with these solutions, the main problem will be solved. In order to solve isothermal crack problem, after conversion and simplifying the equations in orthotropic material, Navier’s equations will be solved with the Fourier. Numerical solution of the problem is the GENERALIZED DIFFERENTIAL QUADRATURE ELEMENT METHOD that is being presented for verification of the results of the integral equations for a specific state in the diagram format. Also, the effect of temperature on intensity factor with various values of nonhomogeneous parameter is investigated.

Cites

CALCULATION OF STATIC AND DYNAMIC STRESS INTENSITY FACTORS IN ORTHOTROPIC FUNCTIONALLY GRADED MATERIALS USING DISPLACEMENT CORRELATION TECHNIQUE

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APA: Copy

TAVAKKOLI, FARZIN, & GHAJAR, RAHMATOLLAH. (2016). THE EFFECT OF NONHOMOGENEOUS PARAMETER ON STRESS INTENSITY FACTOR IN A CRACKED LAYER IN FUNCTIONALLY GRADED MATERIAL UNDER THERMAL STRESSES. MODARES MECHANICAL ENGINEERING, 15(11), 275-283. SID. https://sid.ir/paper/177774/en

Vancouver: Copy

TAVAKKOLI FARZIN, GHAJAR RAHMATOLLAH. THE EFFECT OF NONHOMOGENEOUS PARAMETER ON STRESS INTENSITY FACTOR IN A CRACKED LAYER IN FUNCTIONALLY GRADED MATERIAL UNDER THERMAL STRESSES. MODARES MECHANICAL ENGINEERING[Internet]. 2016;15(11):275-283. Available from: https://sid.ir/paper/177774/en

IEEE: Copy

FARZIN TAVAKKOLI, and RAHMATOLLAH GHAJAR, “THE EFFECT OF NONHOMOGENEOUS PARAMETER ON STRESS INTENSITY FACTOR IN A CRACKED LAYER IN FUNCTIONALLY GRADED MATERIAL UNDER THERMAL STRESSES,” MODARES MECHANICAL ENGINEERING, vol. 15, no. 11, pp. 275–283, 2016, [Online]. Available: https://sid.ir/paper/177774/en

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