Thermoelastic stresses alleviation for two-dimensional functionally graded cylinders under asymmetric loading

Eldeeb, A. M.; Shabana, Yasser M.; El-Sayed, T.A.; Guo, Licheng; Elsawaf, A.

doi:10.1080/01495739.2022.2151960

Cited by 6 publications

(9 citation statements)

References 43 publications

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“…Also, the von Mises stress ( σ VM ) is determined to assess the disc’s failure likelihood and load capacity. It is obtained according to equation (23), and presented in a dimensionless form ( σ ¯ VM = σ VM / P * ) (Eldeeb et al, 2023e).…”

Section: Resultsmentioning

confidence: 99%

“…It can follow various formulae, for instance, trigonometric/polynomial (Najibi and Jing, 2021), exponential (Meshkini et al, 2017), etc. Herein, a trigonometric expression f ( θ ) = cos ( n θ θ + ψ ) is used (Eldeeb et al, 2023e), with n θ called angular coefficient, and ψ noted as the phase angle. Thus, the modified property is expressed as: β ^ ( r , θ ) = β ( r ) f ( θ ) .…”

Section: Disc Thickness and Materials Gradationmentioning

confidence: 99%

“…However, using the cosine function would alter the sign of any β ^ . Therefore, the following modification is executed to hinder any sign change, and to ensure that β ∈ [ β i , β o ] (Eldeeb et al, 2023e):…”

Section: Disc Thickness and Materials Gradationmentioning

confidence: 99%

“…Also, Najibi and Jing (2021) demonstrated that tangential inhomogeneity has noticeable impacts on the performance of infinite FG cylinders. Recently, 2D-FG stationary cylinders were examined under asymmetric thermo-mechanical loading (Eldeeb et al, 2023e). Reported results showed that both the axial and circumferential stresses dropped significantly by ~61% and ~63%, respectively.…”

Section: Introductionmentioning

confidence: 99%

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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%

Section: Disc Thickness and Materials Gradationmentioning

confidence: 99%

Section: Disc Thickness and Materials Gradationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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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“…compared to traditional composites and mono-material structures. 16,17 They are classified as composite materials whose microstructure, and hence effective properties, are graded along a specified coordinate(s). 18,19 Thus, FGMs have been widely used in various engineering structures such as thermal barrier coatings, engine components, rocket nozzles, etc.…”

Section: Introductionmentioning

confidence: 99%

Thermoelastic stress mitigation and weight reduction of functionally graded multilayer nonuniform thickness disc

Eldeeb

Shabana

Elsawaf

2023

The Journal of Strain Analysis for Engineering Design

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In this paper, the particle swarm optimization method is used to reduce the weight of a multilayer rotating nonuniform thickness disc along with alleviation of the maximum tangential stress and the maximum tangential stress-jump at the interfaces. The proposed disc is made of functionally graded material and is subjected to both mechanical pressure and thermal loads. It is divided into several layers with each one having its unique volume fraction. These volume fractions are considered the design variables of the optimization problem along with two geometrical parameters related to the disc thickness. The equilibrium equation in polar coordinates are solved using the finite difference method. A punch of optimization results is calculated and discussed. It is concluded that the range of design variables’ variation widens by considering more layers. Finally, there is no potential disc configuration or geometry is found dominant to enhance the design parameters concurrently. Therefore, performing similar optimization analyses is compulsory to obtain an efficient and durable structure.

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Simulation of Thermal Stresses in Multiplayer Plates of Non-canonical Shape

Smetankina,

Misiura,

Misiura

et al. 2024

Lecture Notes in Mechanical Engineering

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Thermoelastic stresses alleviation for two-dimensional functionally graded cylinders under asymmetric loading

Cited by 6 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

Thermoelastic stress mitigation and weight reduction of functionally graded multilayer nonuniform thickness disc

Simulation of Thermal Stresses in Multiplayer Plates of Non-canonical Shape

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