Size‐dependent free vibration of sandwich micro beam with porous core subjected to thermal load based on SSDBT

Amir, Saeed; Soleimani‐Javid, Zeinab; Arshid, Ehsan

doi:10.1002/zamm.201800334

Cited by 28 publications

(7 citation statements)

References 62 publications

(85 reference statements)

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“…Also, asymmetric porosity of the core is considered (Figure 1). Mechanical properties of the porous core can be estimated as three different functions as follows (Amir et al, 2019)SymmetricAsymmetricUniformwhere (Amir et al, 2019)…”

Section: Formulation Of the Problemmentioning

confidence: 99%

Influences of magnetic environment and two moving loads on lateral and axial displacement of sandwich graphene-reinforced copper-based composite beams with soft porous core

Eghbali

Hosseini

2022

Journal of Vibration and Control

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Today, due to the many applications of sandwich beams in industry, studying the forced vibrations of these structures is important. In these structures, amplifiers are used to improve mechanical properties. In this paper, metal-based graphene (copper) is used to improve the mechanical properties. This research uses a functionally graded (FG) graphene-reinforced copper-based composite (GRCC) sandwich beam and FG soft porous core, subjected to two moving loads and located on an elastic foundation. The equations are derived using Soldatos’ higher-order shear deformation theory in axial and transverse directions. The exact problem under the magnetic field is solved using the Laplace method, which has not been done. The advantages of this method are the simplicity of solving and reducing to zero the error percentage that exists in numerical solutions. The results are compared with previous works. Finally, the effect of various parameters such as magnetic, porosity coefficient, elastic constant, thickness ratio, and velocity of moving load on the dynamic response of the sandwich beam is investigated. It should be noted that the results can be used to construct this type of structure.

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Section: Formulation Of the Problemmentioning

confidence: 99%

Influences of magnetic environment and two moving loads on lateral and axial displacement of sandwich graphene-reinforced copper-based composite beams with soft porous core

Eghbali

Hosseini

2022

Journal of Vibration and Control

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“…In order to capture the impact of different CNT distribution patterns inside the composite faces, the following equations can be used to define the CNT volume fraction inside the composite skins [28]:…”

Section: Casementioning

confidence: 99%

Thermomechanical Buckling Analysis of the E&P-FGM Beams Integrated by Nanocomposite Supports Immersed in a Hygrothermal Environment

Khorasani¹,

Lampani²,

Dimitri³

et al. 2021

Molecules

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Due to the widespread use of sandwich structures in many industries and the importance of understanding their mechanical behavior, this paper studies the thermomechanical buckling behavior of sandwich beams with a functionally graded material (FGM) middle layer and two composite external layers. Both composite skins are made of Poly(methyl methacrylate) (PMMA) reinforced by carbon-nano-tubes (CNTs). The properties of the FGM core are predicted through an exponential-law and power-law theory (E&P), whereas an Eshelby–Mori–Tanaka (EMT) formulation is applied to capture the mechanical properties of the external layers. Moreover, different high-order displacement fields are combined with a virtual displacement approach to derive the governing equations of the problem, here solved analytically based on a Navier-type approximation. A parametric study is performed to check for the impact of different core materials and CNT concentrations inside the PMMA on the overall response of beams resting on a Pasternak substrate and subjected to a hygrothermal loading. This means that the sensitivity analysis accounts for different displacement fields, hygrothermal environments, and FGM theories, as a novel aspect of the present work. Our results could be replicated in a computational sense, and could be useful for design purposes in aerospace industries to increase the tolerance of target productions, such as aircraft bodies.

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“…The strain energy of the system consists of two parts: the classical strain energy and the energy component from the MCST. The following relation is used to define the total strain energy for the selected sandwich structure [39]…”

Section: Governing Equations Of the Problemmentioning

confidence: 99%

Quasi-3D Hyperbolic Shear Deformation Theory for the Free Vibration Study of Honeycomb Microplates with Graphene Nanoplatelets-Reinforced Epoxy Skins

et al. 2020

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A novel quasi-3D hyperbolic shear deformation theory (QHSDT) with five unknowns is here employed, together with the Hamilton’s principle and the modified couple stress theory (MCST) to analyze the vibrational behavior of rectangular micro-scale sandwich plates resting on a visco-Pasternak foundation. The sandwich structure features a Nomex or Glass phenolic honeycomb core, and two composite face sheets reinforced with graphene nanoplatelets (GPLs). The effective properties of both face sheets are evaluated by means of the Halpin-Tsai and extended rule of mixture (ERM) micromechanical schemes. The governing equations of the problem are derived by applying the Hamilton’s principle, whose solutions are determined theoretically according to a classical Navier-type procedure. A parametric study checks for the effect of different material properties, length-scale parameters, foundation parameters and geometrical properties of the honeycomb cells, and the reinforcing GPLs, on the vibration response of the layered structure, which can be of great interest for many modern engineering applications and their optimization design.

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Size‐dependent free vibration of sandwich micro beam with porous core subjected to thermal load based on SSDBT

Cited by 28 publications

References 62 publications

Influences of magnetic environment and two moving loads on lateral and axial displacement of sandwich graphene-reinforced copper-based composite beams with soft porous core

Influences of magnetic environment and two moving loads on lateral and axial displacement of sandwich graphene-reinforced copper-based composite beams with soft porous core

Thermomechanical Buckling Analysis of the E&P-FGM Beams Integrated by Nanocomposite Supports Immersed in a Hygrothermal Environment

Quasi-3D Hyperbolic Shear Deformation Theory for the Free Vibration Study of Honeycomb Microplates with Graphene Nanoplatelets-Reinforced Epoxy Skins

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