Use of magnetorheological elastomer in an adaptive sandwich beam with conductive skins. Part II: Dynamic properties

Zhou, Gang; Wang, Q.

doi:10.1016/j.ijsolstr.2005.07.044

Cited by 58 publications

(47 citation statements)

References 16 publications

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“…Soft actuator made of isotropic MR elastomer [77] Physical status shift of MR elastomer due to magnetic field makes it great candidate to develop adaptive beam structures [94,[96][97]127]. Zhou and co-workers [94,[96][97] piloted the idea of adaptive sandwich beams with MR elastomers as part of the core, figure 32 (a). Extensive numerical simulations and finite element analysis have been conducted.…”

Section: Sensing Devicesmentioning

confidence: 99%

A state-of-the-art review on magnetorheological elastomer devices

Li¹,

Li²,

Li³

et al. 2014

Smart Mater. Struct.

529

385

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During the last few decades, magnetorheological (MR) elastomers have attracted a significant amount of attention for their enormous potential in engineering applications. Because they are a solid counterpart to MR fluids, MR elastomers exhibit a unique field-dependent material property when exposed to a magnetic field, and they overcome major issues faced in magnetorheological fluids, e.g. the deposition of iron particles, sealing problems and environmental contamination. Such advantages offer great potential for designing intelligent devices to be used in various engineering fields, especially in fields that involve vibration reduction and isolation. This paper presents a state of the art review on the recent progress of MR elastomer technology, with special emphasis on the research and development of MR elastomer devices and their applications. To keep the integrity of the knowledge, this review includes a brief introduction of MR elastomer materials and follows with a discussion of critical issues involved in designing magnetorheological elastomer devices, i.e. operation modes, coil placements and principle fundamentals. A comprehensive review has been presented on the research and development of MR elastomer devices, including vibration absorbers, vibration isolators, base isolators, sensing devices, and so on. A summary of the research on the modeling mechanical behavior for both the material and the devices is presented. Finally, the challenges and the potential facing magnetorheological elastomer technology are discussed, and suggestions have been made based on the authors' knowledge and experience. Abstract:During last decades, magnetorheological (MR) elastomer has attracted significant amount of attention for its enormous potentials in engineering applications. Being a solid counterpart of MR fluids, MR elastomers exhibit unique field-dependent material property when being exposed to magnetic field, in meanwhile overcoming major issues faced in magnetorheological fluids, e.g. deposition of iron particles, sealing problem and environmental contamination. Such advantages offer great potentials for designing intelligent devices to be used in various engineering fields, especially for vibration reduction and isolation. This paper presents a state-of-the-art review on the recent progress of MR elastomer technology, with special emphasis on research and development of MR elastomer devices and their applications. To keep the integrity of the knowledge, the review includes a brief introduction of the MR elastomer materials and follows by discussion of critical issues in designing magnetorheological elastomer devices, i.e. operation modes, coil placements and principle fundamentals. A comprehensive review has been presented research and development of MR elastomer devices, including vibration absorbers, vibration isolators, base isolators, sensing devices and so on. Summary of research on modeling mechanical behavior for both material and devices are presented. Finally, challenges and potentials facing ...

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Section: Sensing Devicesmentioning

confidence: 99%

A state-of-the-art review on magnetorheological elastomer devices

Li¹,

Li²,

Li³

et al. 2014

Smart Mater. Struct.

529

385

View full text Add to dashboard Cite

show abstract

“…The results illustrate that the sandwich beam with thick steel skins induces higher value of magnetic field than that with thin steel face layer, under the same external conditions. Furthermore, under dynamic deformation of conductive skins, motion-induced eddy current is generated on the face layers so that the magnetic field closed to the face layers is disturbed and magneto-elastic load is applied to the face layers (Zhou and Wang, 2006c). The magneto-elastic load consists of Lorenz body force and the surface force caused by the Maxwell's stress applied on the surface of the conductive skins.…”

Section: Dynamic Characteristics Of Fully Treated Mr/er Sandwich Beammentioning

confidence: 99%

“…It should be noted that the bulk magnetic permeability of the MR fluids is in the range of 3-9, which is significantly lower than that of steel (around 500). Therefore, the magneto-elastic force applied to the MR fluid has no significant effect on the vibration analysis of the MR-based sandwich structures (Zhou and Wang, 2006c).…”

Section: Dynamic Characteristics Of Fully Treated Mr/er Sandwich Beammentioning

confidence: 99%

Dynamic characteristics and control of magnetorheological/electrorheological sandwich structures: A state-of-the-art review

Eshaghi

Sedaghati

Rakheja

2016

Journal of Intelligent Material Systems and Structures

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During past four decades, applications of magnetorheological and electrorheological fluids in adaptive sandwich structures have been widely studied, primarily for the purpose of vibration control. The rapid response time of controllable magnetorheological/electrorheological fluids to an applied magnetic/electric field and reversible variations in their stiffness and damping properties have been the key motivations for adaptive structures applications. This article presents a comprehensive review of the reported studies on applications of magnetorheological/electrorheological fluids for realizing active and semi-active vibration suppression in sandwich structures. The review focuses on methods of characterizing the magnetorheological/electrorheological fluids in the pre-yield region, magnetic/electric field-dependent phenomenological models describing the storage and loss moduli of fluids, experimental and analytical methods developed for vibration analysis of sandwich structures with magnetorheological/electrorheological fluid treatments, analysis of structures with partial magnetorheological/electrorheological fluid treatments and optimal treatment locations, and developments in control strategies for vibration suppression of magnetorheological/electrorheological sandwich structures. The studies on dynamic responses of fully and partially treated magnetorheological/electrorheological-based sandwich beams, plates, shells, and panels are also discussed, including the mathematical modeling methods and associated assumptions, methods of solutions, and experimental methods.

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“…The validity of the developed finite element model is further examined with those of Zhou et al [15]. The simulation is performed with the material and geometrical properties; l = 150 mm, width, b = 0.1m; core thickness, h c = 2 mm; skin thickness, h t = h b = 0.1 mm, E t = E b = 72GPa, G c = 0.6208 MPa, density of skins are, ρ t = ρ b = 2700 kg/m 3 and ρ b = 1100 kg/m 3 under the condition of simply supported and from the Table 5, it is again conformed that the effectiveness of the present finite element formulation.…”

Section: Analytical Validationmentioning

confidence: 99%

Vibration Analysis of Carbon Fiber Reinforced Laminated Composite Skin with Glass Honeycomb Sandwich Beam Using HSDT

Subramani

Arumugam

Ramamoorthy

2017

Period. Polytech. Mech. Eng.

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In this paper, the vibration analysis of uniform laminated composite sandwich beam with a viscoelastic core was studied. The governing equation of motion of the laminated composite sandwich beam has been derived based on higher order shear deformation theory (HSDT) in finite element model (FEM IntroductionNowadays the demand for the sandwich structure is getting increased because of its high stiffness to the low weight ratio. It is also paved the attention of the researchers and scientist towards the sandwich structures. A Sandwich structure finds its place in wide range of applications because of its high stiffness and flexural rigidity especially in marine, aerospace and astronautics. Ibrahim Ozkol and AytacArikoglu [1] were made an investigation on vibration analysis of the uniform laminated composite sandwich beams with viscoelastic core using differential transform method. The governing equation of motion of sandwich beamwas formulated by Hamilton's principle and it was solved by differential transform method (DTM), Eigen value analysis method was used to generate and evaluate frequencies. Banerjee et al. [3] investigated the vibration characteristics of the viscoelastic material based asymmetric sandwich beam by using the dynamic stiffness model which was developed from the Timoshenko beam theory. Manoharan et al. [4] presented the finite element formulation of the magnetorheological (MR) fluid based sandwich beam. The governing equation of motion sandwich beam was formulated using finite element method. In this study it was concluded that the natural frequencies increased by increasing the intensity of the magnetic field irrespective to the boundary conditions. Allahverdizadeh et al. [5] was studied the dynamic behaviour of adaptive sandwich beams, where the middle layer as electro-rheological fluid (ERF) and constraining layers were fabricated by functionally graded materials (FGM). This study shows that the resonant frequencies and the amplitude of peak values have been decreased by increasing the thickness FGM at constant electric filed. From the results it was indicated that at a definite applied electric field, the Clamped-Clamped beam showed the higher resonant frequencies and the cantilever beam showed the least value among all end conditions. Xu and Qiu [6] studied the free vibration analysis and optimization method of composite lattice truss core sandwich beams. The partial differential governing equation of motion was developed by adopting the Hamilton principle which was based on Thimosenko and bernoullis beam theory and then the natural frequencies of the

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Use of magnetorheological elastomer in an adaptive sandwich beam with conductive skins. Part II: Dynamic properties

Cited by 58 publications

References 16 publications

A state-of-the-art review on magnetorheological elastomer devices

A state-of-the-art review on magnetorheological elastomer devices

Dynamic characteristics and control of magnetorheological/electrorheological sandwich structures: A state-of-the-art review

Vibration Analysis of Carbon Fiber Reinforced Laminated Composite Skin with Glass Honeycomb Sandwich Beam Using HSDT

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