Experimental characterization and microscale modeling of isotropic and anisotropic magnetorheological elastomers

Khanouki, Mostafa Asadi; Sedaghati, Ramin; Hemmatian, Masoud

doi:10.1016/j.compositesb.2019.107311

Cited by 62 publications

(73 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This phenomenon is more clearly shown in Figure 6 b, in which the predicted compressive stresses as a function of the magnetic flux density were compared with the experimental results under different given strains. This is because the microstructure changed, such as the debonding of the particle/matrix interfaces, and the reconstruction of particle distribution happened within MRE material under large deformation, causing the decrease of load-bearing ability and the change of the MR effect of the MRE material [ 17 , 28 ]. However, the effects of the microstructure changes were not considered in the present model.…”

Section: Experimental Results and Modelingmentioning

confidence: 99%

“…Liao et al [ 13 ] proposed a modified magnetic dipole model to investigate the evolution of the normal force of MRE with particle magnetization under the compression state. As found from the above works, magnetic dipole theory microscopically provided some fundamental bases for describing the relationship between the microstructure and mechanical properties of MRE [ 17 ]. Unfortunately, the lack of consideration of the reconstruction of particle distribution during MRE deformation makes it difficult to analyze the response of MRE at complex loads, such as large deformations.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Magneto-Hyperelastic Model for Silicone Rubber-Based Isotropic Magnetorheological Elastomer under Quasi-Static Compressive Loading

Qiao

Zhang

et al. 2020

Polymers

View full text Add to dashboard Cite

A new magneto-hyperelastic model was developed to describe the quasi-static compression behavior of silicone rubber-based isotropic magnetorheological elastomer (MRE) in this work. The magnetization property of MRE was characterized by a vibrating sample magnetometer (VSM), and the quasi-static compression property under different magnetic fields was tested by using a universal testing machine equipped with a magnetic field accessory. Experimental results suggested that the stiffness of the isotropic MRE increased with the magnetic flux density within the tested range. Based on experimental results, a new magneto-hyperelastic model was established by coupling the Ogden hyperelastic model, the magnetization model and the magneto-induced modulus model based on a magnetic dipole theory. The results show that the proposed new model can accurately predict the quasi-static compression property of the isotropic MRE under the tested magnetic flux density and strain ranges using only three model parameters.

show abstract

Section: Experimental Results and Modelingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Magneto-Hyperelastic Model for Silicone Rubber-Based Isotropic Magnetorheological Elastomer under Quasi-Static Compressive Loading

Qiao

Zhang

et al. 2020

Polymers

View full text Add to dashboard Cite

show abstract

“…These material properties are utilized in the modeling and design optimization of the MRE-ATVA in the next sections. An MRE sample with 40% volume fraction of iron particles is considered and its properties are adopted from our previous work [1]. This MRE sample was fabricated using silicone rubber as the elastomeric matrix material and soft type ferromagnetic carbonyl iron particles as the magnetic fillers.…”

Section: Mechanical and Magnetic Properties Of Materialsmentioning

confidence: 99%

“…The selected silicone rubber has low viscosity which facilitates the distribution of magnetic fillers in the matrix and ensures easy mixing and degassing. Details of the fabrication and testing of the MRE sample are explained in [1]. The density of the MRE sample is 3500 kg/m 3 .…”

Section: Mechanical and Magnetic Properties Of Materialsmentioning

confidence: 99%

“…MREs overcome the problems that accompany the applications of magnetorheological (MR) fluids, such as sedimentation of particles, sealing issues, and environmental contamination. The magnetic properties of MREs originate from microstructural interactions under a magnetic field and depend on different parameters such as volume fraction and spatial distribution of embedded ferromagnetic particles [1][2][3]. When exposed to an external magnetic field, MRE changes its dynamic properties, including both stiffness and damping, rapidly and reversibly, thus, making it an ideal candidate for the development of the next generation of adaptive devices with controllable operating frequency and damping [4].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Multidisciplinary Design Optimization of a Novel Sandwich Beam-Based Adaptive Tuned Vibration Absorber Featuring Magnetorheological Elastomer

Khanouki

Hemmatian

2020

Materials

Self Cite

View full text Add to dashboard Cite

The present study aims to investigate the dynamic performance and design optimization of a novel magnetorheological elastomer based adaptive tuned vibration absorber (MRE-ATVA). The proposed MRE-ATVA consists of a light-weight sandwich beam treated with an MRE core layer and two electromagnets installed at both free ends. Three different design configurations for electromagnets are proposed. The finite element (FE) model of the proposed MRE-ATVA and magnetic model of the electromagnets are developed and combined to evaluate the frequency range of the absorber under varying magnetic field intensity. The results of the developed model are validated in multiple stages with available analytical and simulation data. A multidisciplinary design optimization strategy has been formulated to maximize the frequency range of the proposed MRE-based ATVA while respecting constraints of weight, size, mechanical stress, and sandwich beam deflection. The optimal solution is obtained and compared for the three proposed ATVA configurations. The optimal ATVA with a U-shaped electromagnet shows more than 40% increase in the natural frequency while having a total mass of 596 g.

show abstract

Magnetorheological Elastomer‐Based Materials and Devices: State of the Art and Future Perspectives

et al. 2021

View full text Add to dashboard Cite

Magnetorheological elastomers based on the combination of a polymeric matrix with magnetic fillers allow the possibility of controlling their mechanical properties when an external magnetic field is applied. This so‐called magnetorheological effect can be exploited for a variety of applications. Herein, a comprehensive outlook at the state of the art is provided, in terms of the materials, effects, and applications. The physical effects that result in the magnetorheological effect are described, both from a micro and phenomenological points of view. Then, the possible combinations of different polymeric matrices and magnetic fillers, along with other additives, are presented, allowing to tune the mechanical properties, mainly dependent on the polymer matrix, and the magnetic field response, which is related to the magnetic filler. Finally, representative applications of magnetorheological elastomers are presented. This review represents an up‐to‐date state‐of‐the‐art in the field of magnetorheological elastomers as a ground to highlight the main achievements and point the specific needs to improve their response and applicability by further tuning materials and configurations.

show abstract

Experimental characterization and microscale modeling of isotropic and anisotropic magnetorheological elastomers

Cited by 62 publications

References 38 publications

A Magneto-Hyperelastic Model for Silicone Rubber-Based Isotropic Magnetorheological Elastomer under Quasi-Static Compressive Loading

A Magneto-Hyperelastic Model for Silicone Rubber-Based Isotropic Magnetorheological Elastomer under Quasi-Static Compressive Loading

Multidisciplinary Design Optimization of a Novel Sandwich Beam-Based Adaptive Tuned Vibration Absorber Featuring Magnetorheological Elastomer

Magnetorheological Elastomer‐Based Materials and Devices: State of the Art and Future Perspectives

Contact Info

Product

Resources

About