On the Behavior of a Rotating Functionally Graded Hybrid Cylindrical Shell with Imperfect Bonding Subjected to Hygrothermal Condition

Saadatfar, M.; Aghaie-Khafri, M.

doi:10.1080/01495739.2015.1038487

Cited by 13 publications

(4 citation statements)

References 43 publications

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“…In terms of the materials, they are graded from PZT-4 at the inner surface to Ba 2 NaNb 5 O 15 at the outer surface with x = 1 . The numerical values of the properties are listed in Table 2 (Akbarzadeh and Pasini, 2014; Saadatfar and Aghaie-Khafri 2015a, 2015b; Wu and Lim, 2016). All these numerical values are used henceforth unless otherwise mentioned.…”

Section: Resultsmentioning

confidence: 99%

Asymmetric two-dimensional poroelastic analysis of heterogeneous smart discs considering hygrothermal loading

Eldeeb,

Shabana,

Guo

et al. 2024

Journal of Intelligent Material Systems and Structures

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The objective of this study is to examine through the finite element method the impacts of employing two-dimensional (2D) properties grading on the behaviors of piezoelectric sensors/actuators due to their significance. These structures are modeled as variable thickness discs and are assumed to be exposed to simultaneous asymmetric loading conditions (thermal, hygral, electrical, and mechanical loads). Results demonstrate that the 2D grading is superior compared to the conventional one-dimensional grading for reducing the von Mises stress. The reduction reached, for instance, 8.3% allowing further increase of loading and/or safety. Also, the change of the displacement is varied between −4.5% and 31% depending on the considered grading pattern, and thus can be controlled to a desired value which helps to improve the sensing and actuating functionality for certain requirements. The study also examines the effects of porosity, and the results are compared to nonporous discs. Reductions of the maximum compressive tangential stress and von Mises stress reached 79.75% and 33.6%, respectively at specific porosity distribution patterns and volume fractions. These findings have significant implications for the manufacturing of smart structures, enabling them to operate in severe working conditions with better sensing and actuating capabilities than previously possible.

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Section: Resultsmentioning

confidence: 99%

Asymmetric two-dimensional poroelastic analysis of heterogeneous smart discs considering hygrothermal loading

Eldeeb,

Shabana,

Guo

et al. 2024

Journal of Intelligent Material Systems and Structures

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“…Todays, functionally graded material (FGM) together with functionally graded intelligent materials such as functionally graded piezoelectric material (FGPM) and functionally graded magneto-electro-elastic (FGMEE) have ever-increasing usages in the various industries because of their excellent feature. [1][2][3][4][5] Also, magneto-electro-elastics as composites including both piezoelectric and magnetostrictive components exhibit better performance than single-phase smart material as a result of the magneto-electric interaction effect. 6 Consequently, as a new type of intelligent materials, FGMEEs are considered and employed as high performance sensors and actuators in smart structures.…”

Section: Introductionmentioning

confidence: 99%

Effects of porosity, profile of thickness, and angular acceleration on the magneto-electro-elastic behavior of a porous FGMEE rotating disc placed in a constant magnetic field

Saadatfar

Zarandi

Babaelahi

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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Effects of porosity, profile of thickness and angular deceleration on the stress and deformation of a fluid-saturated functionally graded porous magneto-electro-elastic rotating disc are investigated in this article. Since the angular velocity is taken to be variable, the disc is subjected to Lorentz force in two directions: radial and circumferential. It is assumed that material properties of the disc obey power-law function of radius. The disc is uniformly porous and its thickness varies as a function of radius. First, three coupled governing partial differential equations in terms of the displacement and electric potential are converted to ordinary differential equations employing the separation of variable method. Then, obtained equations are solved using the Runge–Kutta and shooting methods for the case of fixed–free boundary condition. The effect of variable angular velocity, thickness profile, inhomogeneity index, porosity, and magnetic field is studied and illustrated graphically. The results demonstrate that considering angular acceleration for the disc has a considerable effect on the Lorentz force resulted from the magnetic field. Besides, the angular velocity constant has a significant effect on the stresses and displacements in the presence of the magnetic field.

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“…The increased need of smart materials has provoked great interest in the analysis of intelligent structures composed of these smart materials. [25][26][27][28] MEE structures in thermal environments exhibit a completely indifferent behaviour in contrast to the mechanical loading. Consequently, the behaviour, constitutive equations, along with the resulting equations of motion for METE materials vary greatly.…”

Section: Introductionmentioning

confidence: 99%

Computational evaluation of electro-magnetic circuits’ effect on the coupled response of multifunctional magneto-electro-elastic composites plates exposed to hygrothermal fields

Vinyas

Harursampath

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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This work presents a higher order finite element (FE) model to gauge the static behaviour of hygrothermo-magneto-electro-elastic (HTMEE) plates with different electro-magnetic circuits. The FE model is composed of eight-noded isoparametric elements. The displacement equations are presumed to obey the higher order shear deformation theory (HSDT) and the governing equations of motion are obtained with the support of the virtual energy principle. The correctness of the FE model is verified against previously published results. The influence of electro-magnetic boundary conditions associated with hygrothermal loads, stacking sequences, empirical constants and different loading profiles have been studied in detail. The results of this article are the first of its kind in literature. Hence, it is believed to set benchmark for future investigations on multifunctional structures.

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On the Behavior of a Rotating Functionally Graded Hybrid Cylindrical Shell with Imperfect Bonding Subjected to Hygrothermal Condition

Cited by 13 publications

References 43 publications

Asymmetric two-dimensional poroelastic analysis of heterogeneous smart discs considering hygrothermal loading

Asymmetric two-dimensional poroelastic analysis of heterogeneous smart discs considering hygrothermal loading

Effects of porosity, profile of thickness, and angular acceleration on the magneto-electro-elastic behavior of a porous FGMEE rotating disc placed in a constant magnetic field

Computational evaluation of electro-magnetic circuits’ effect on the coupled response of multifunctional magneto-electro-elastic composites plates exposed to hygrothermal fields

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