Electric-thermal link finite element made of a FGM with spatial variation of material properties

Muŕın, Just́ın; Kutiš, Vladimı́r; Paulech, Juraj; Hrabovský, Juraj

doi:10.1016/j.compositesb.2011.05.030

Cited by 8 publications

(4 citation statements)

References 3 publications

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“…However, pristine PCMs commonly exhibit low electrical conductivity and thermal conductivity, which restrict their applications. To overcome these deficiencies, various electrically and thermally conductive fillers including metal materials (Cu, Ag, Au, Al, Ni) and carbon materials (CNTs, graphene, expanded graphite) have been introduced into the PCM system. − The electrons in the outer layer of metal atoms have strong delocalization and move under the action of an external electric field, thus generating an electric current. Electrons in the p orbital of parallel carbon atoms in one layer form large-scale delocalized π bonds, and the electrons can move freely in the lattice.…”

Section: Mechanismsmentioning

confidence: 99%

Phase Change Thermal Storage Materials for Interdisciplinary Applications

et al. 2023

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Functional phase change materials (PCMs) capable of reversibly storing and releasing tremendous thermal energy during the isothermal phase change process have recently received tremendous attention in interdisciplinary applications. The smart integration of PCMs with functional supporting materials enables multiple cutting-edge interdisciplinary applications, including optical, electrical, magnetic, acoustic, medical, mechanical, and catalytic disciplines etc. Herein, we systematically discuss thermal storage mechanism, thermal transfer mechanism, and energy conversion mechanism, and summarize the state-of-the-art advances in interdisciplinary applications of PCMs. In particular, the applications of PCMs in acoustic, mechanical, and catalytic disciplines are still in their infancy. Simultaneously, in-depth insights into the correlations between microscopic structures and thermophysical properties of composite PCMs are revealed. Finally, current challenges and future prospects are also highlighted according to the up-to-date interdisciplinary applications of PCMs. This review aims to arouse broad research interest in the interdisciplinary community and provide constructive references for exploring next generation advanced multifunctional PCMs for interdisciplinary applications, thereby facilitating their major breakthroughs in both fundamental researches and commercial applications.

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Section: Mechanismsmentioning

confidence: 99%

Phase Change Thermal Storage Materials for Interdisciplinary Applications

et al. 2023

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“…Figure 2a presents simple link / beam FGM structure for which new FEM equations for coupled electro-thermo-mechanical analysis will be derived. Prior to the derivation process of the new FEM equations it is necessary to implement homogenization techniques (extended mixture rule [1] and multilayer method [2,3]) that convert spatial change of material properties (caused by chosen mixture of the constituents) into equivalent one-dimensional change of material properties for each link or beam of the FGM actuator structure. This 1D change of effective material properties is only in longitudinal direction (x axis) of the link / beam, Figure 2b.…”

Section: Fem Equations For Coupled Electro -Thermo -Mechanical Analysismentioning

confidence: 99%

Electro-thermo-mechanical analysis of actuator structure made of functionally graded material.

Paulech¹,

Kutiš²,

Muŕın³

et al. 2021

9th Edition of the International Conference on Computational Methods for Coupled Problems in Science and Engineering

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The paper deals with a new approach in analyzing of the actuator systems made of Functionally Graded Materials (FGM) using our new beam finite elements. Weak coupled electro-thermomechanical analysis and spatial continuous variation of material properties are considered for chosen actuator structure. This electrically driven actuator is simple-shaped due to properly chosen variation of material properties to ensure functionality of the actuator at material and physical level instead of the geometric shape level. The solution results will be compared with those obtained by using solid elements of a FEM commercial program.

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“…Many studies have been devoted to the static and dynamic analysis of FGM beams [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18], FGM axial bars [19], FGM torsional bars [20], FGM plates [21], and FGM annular circular plates and disks [22,23]. In these studies, the material properties of one-dimensional (1-D) FGM structures were assumed to vary across the thickness (or radial) direction only [1][2][3][4][5][6][7][8][9]20], in the axial direction only [10][11][12]19], or in both the axial and thickness (or radial) directions [13,14].…”

Section: Introductionmentioning

confidence: 99%

“…In these studies, the material properties of one-dimensional (1-D) FGM structures were assumed to vary across the thickness (or radial) direction only [1][2][3][4][5][6][7][8][9]20], in the axial direction only [10][11][12]19], or in both the axial and thickness (or radial) directions [13,14]. In the literature, various solution methods have been applied to static and dynamic analyses of FGM structures; these include analytical methods [1][2][3][4]15,[20][21][22], the Rayleigh-Ritz method [16], the modal analysis method [10,14], power series expansion methods [11,19], the differential quadrature method [14], the dynamic stiffness method [23], the finite element method (FEM) [5][6][7][8][9]12,17,18], and the spectral element method [24].…”

Section: Introductionmentioning

confidence: 99%