Dynamic stability enhancement of laminated composite sandwich plates using smart elastomer layer
01 Nov 2020-Journal of Sandwich Structures and Materials (SAGE PublicationsSage UK: London, England)-Vol. 22, Iss: 8, pp 2796-2817
TL;DR: In this article, the dynamic stability of composite sandwich plates with a smart elastomer layer subjected to an axial periodic load was investigated, and a finite element model of the composite sandwich plate with Magn...
Abstract: The dynamic stability of composite sandwich plates with a smart elastomer layer subjected to an axial periodic load is investigated. A finite element model of the composite sandwich plate with Magn...
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TL;DR: In this paper , the static and dynamic performances of sandwich plates with magnetorheological elastomer (MRE) core are investigated, in which the MRE core includes two copper wire layers, two inner metal layers, and one MRE layer.
Abstract: This paper investigates the static and dynamic performances of sandwich plates with magnetorheological elastomer (MRE) core, in which the MRE core includes two copper wire layers, two inner metal layers, and one MRE layer. First, based on the complex modulus method, the Jolly theory and the pre-defined magnetic coefficients, the dynamic moduli, and loss factors of MRE are assumed as a function of magnetic induction intensity. Furthermore, a theoretical model of the MRE sandwich plates (MRESPs) is proposed, which considers the internal magnetic field excitation and four types of panel materials, namely fiber-reinforced polymer (FRP), fiber-reinforced polymer with carbon nanotubes (CNT-FRP), metal and fiber-metal hybrid (FMH) panels. After the deformation and energy equations are derived to solve the static bearing stiffness, dynamic stiffness, and damping parameters, some literature results are employed to provide the initial validation of the model developed. Subsequently, four MRESP specimens with the FRP, CNT-FRP, metal, and FMH panels are fabricated and measured to further verify the model as well as to evaluate the mechanical performance. The influence of critical geometric and material parameters related to MRE on static and dynamic properties is also discussed to summarize some practical conclusions for engineering applications.
12 citations
TL;DR: In this article, the instability regions of a honeycomb sandwich plate are investigated for different end conditions under periodic in-plane loading, and the core layer of the sandwich plate is made of c...
Abstract: In this study, the instability regions of a honeycomb sandwich plate are investigated for different end conditions under periodic in-plane loading. The core layer of the sandwich plate is made of c...
11 citations
TL;DR: In this paper, the authors investigated the effect of magnetorheological fluids on the aeroelastic stability and flutter boundaries of the circular/annular magnetic sandwich plates.
Abstract: The present study investigates the effect of magnetorheological fluids on the aeroelastic stability and flutter boundaries of the circular/annular magnetorheological (MR) sandwich plates in a super...
7 citations
TL;DR: The free and forced vibration characteristics of a sandwich beam with composite face layers and partially configured carbon nanotubes reinforced magnetorheological elastomer (hybrid MR elastomers) are described in this article.
Abstract: The free and forced vibration characteristics of a sandwich beam with composite face layers and partially configured carbon nanotubes reinforced magnetorheological elastomer (hybrid MR elastomer) c...
6 citations
TL;DR: In this paper, the parametric instability regions of a three-layered sandwich plate with thin composite skins and leptadenia pyrotechnica rheological elastomer (LPRE) core under axial percolation were analyzed.
Abstract: In the present analysis, the parametric instability regions of a three-layered sandwich plate with thin composite skins and leptadenia pyrotechnica rheological elastomer (LPRE) core under axial per...
4 citations
References
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01 Jan 2016
TL;DR: The mechanics of composite materials is universally compatible with any devices to read and is available in the authors' book collection an online access to it is set as public so you can download it instantly.
Abstract: Thank you for downloading mechanics of composite materials. Maybe you have knowledge that, people have look hundreds times for their favorite books like this mechanics of composite materials, but end up in malicious downloads. Rather than reading a good book with a cup of tea in the afternoon, instead they are facing with some infectious bugs inside their desktop computer. mechanics of composite materials is available in our book collection an online access to it is set as public so you can download it instantly. Our book servers hosts in multiple countries, allowing you to get the most less latency time to download any of our books like this one. Merely said, the mechanics of composite materials is universally compatible with any devices to read.
958 citations
"Dynamic stability enhancement of la..." refers background in this paper
...The overall bending stiffness of an orthotropic plate increases as the fiber angle increases up to 45 and the plate achieves its smallest negative bending-twisting coupling at 45 degree fiber angle [33]....
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TL;DR: In this article, the transverse displacement of a three-layer sandwich beam with a viscoelastic core is derived in terms of the transversal displacement, w, for a 3D beam.
785 citations
TL;DR: In this article, a method to fabricate isotropic magnetorheological (MR) elastomers under natural conditions was presented, and a simple self-assembled microstructure was proposed to explain the inherent magnetoviscoelasticity of MR elastomer prepared in the absence of a magnetic field.
294 citations
TL;DR: In this article, two different magnetorheological elastomers, one made of polyurethane and the other made of natural rubber, are successfully fabricated, and the experimental results show that the modulus of the rubber elastomer can increase by 28% under a strong magnetic field.
Abstract: In this paper, new methods for fabricating magnetorheological (MR) elastomers are introduced. Two different MR elastomers, one made of polyurethane and the other made of natural rubber, are successfully fabricated. The experimental results show that the modulus of polyurethane MR elastomers can increase by 28% under a strong magnetic field. Comparatively, the rubber MR elastomer has low modulus change ability. A mathematical model to represent the stress-strain relationship of MR elastomers is presented. The model takes into account all the dipole interactions in a chain and the nonlinear properties of the host composite. The analytical results of the model are in agreement with experimental data.
286 citations
"Dynamic stability enhancement of la..." refers methods in this paper
...The modeling, fabrication and mechanical behavior of the MRE have been studied by some investigators [15,16]....
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TL;DR: In this paper, the full system of equations for deformable magneto-sensitive elastomers in an electro-magnetic field is considered and a simple phenomenological model is suggested.
158 citations
"Dynamic stability enhancement of la..." refers methods in this paper
...The modeling, fabrication and mechanical behavior of the MRE have been studied by some investigators [15,16]....
[...]