Showing 1–2 of 2 results for author: Dui, G
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Theoretical Analysis of Functionally Graded Piezoelectric Thick-walled Cylinder Subjected to Mechanical and Electric Loadings
Authors:
Han Wang,
Libiao Xin,
Guansuo Dui
Abstract:
In this paper, the theoretical analysis for a hollow thick-walled functionally graded piezoelectric cylinder subjected to electric and mechanical loads are developed. The cylinder consists of two materials (PZT4 and PVDF) and the volume fraction of PZT4 is given in the three variable parameters power law form. By using the Voigt method and the assumption of a uniform strain field within the two li…
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In this paper, the theoretical analysis for a hollow thick-walled functionally graded piezoelectric cylinder subjected to electric and mechanical loads are developed. The cylinder consists of two materials (PZT4 and PVDF) and the volume fraction of PZT4 is given in the three variable parameters power law form. By using the Voigt method and the assumption of a uniform strain field within the two linear elastic constituents, the complex hypergeometric differential equation of the radial displacement is obtained. Then the solutions of the radial displacement, the stresses, and the electric potential are derived and solved. The method in this paper is more suitable for actual engineering gradient piezoelectric materials, and the volume fraction function can cover more complicated situations. Finally, the influence of the parameter n in volume fraction on the mechanical behaviors are investigated, and the difference between the circumferential and radial stresses is discussed to reduce the stress concentration in the functionally graded piezoelectric cylinder.
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Submitted 12 November, 2018;
originally announced November 2018.
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Revisiting the elastic solution for an inner-pressured functionally graded thick-walled tube within a uniform magnetic field
Authors:
Libiao Xin,
Yanbin Li,
Dongmei Pan,
Guansuo Dui,
Chengjian Ju
Abstract:
In this paper, the mechanical responses of a thick-walled functionally graded hollow cylinder subjected to uniform magnetic field and inner-pressurized loads are studied. Rather than directly assuming the material constants into some certain function forms as displayed in previous researches, we firstly give the volume fractions of different constituents of the FGM cylinder and then determine the…
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In this paper, the mechanical responses of a thick-walled functionally graded hollow cylinder subjected to uniform magnetic field and inner-pressurized loads are studied. Rather than directly assuming the material constants into some certain function forms as displayed in previous researches, we firstly give the volume fractions of different constituents of the FGM cylinder and then determine the expressions of material constants. By the use of the Voigt method the corresponding analytical solutions of displacements in radical direction, the strain and stress components and the perturbation magnetic field vector are derived by the following. In numerical part, the influences of volume fraction on displacement, stain and stress components and the magnetic perturbation filed vector are investigated; indicated by the results, we can conclude that the Poisson's ratio has a significant effect on the FGM cylinder's mechanical behaviors. Moreover, by some appropriate choices of the material constants it can be found that the obtained results in this paper can reduce to some special cases given in previous literatures.
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Submitted 13 April, 2018;
originally announced May 2018.