The magneto-mechanical properties of off-axis anisotropic magnetorheological elastomers

Zhang, Jingyi; Pang, Haoming; Wang, Yu; Gong, Xinglong

doi:10.1016/j.compscitech.2020.108079

Cited by 40 publications

(27 citation statements)

References 34 publications

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“…In MREs, the magnetic particles can also be arranged in different directions, for example, 0 0 , 30 0 , 45 0 , 60 0, and 90 0 [167,169] as depicted in Figure 4. In 2012, Boczkowska and co-workers [168] investigated the effects of aligning particles in different directions for the first time.…”

Section: Conventional Methodsmentioning

confidence: 99%

A review on magneto-mechanical characterizations of magnetorheological elastomers

Bastola

Hossain

2020

Composites Part B: Engineering

202

113

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Section: Conventional Methodsmentioning

confidence: 99%

A review on magneto-mechanical characterizations of magnetorheological elastomers

Bastola

Hossain

2020

Composites Part B: Engineering

202

113

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“…In this section, the presented micro-modeling strategies are compared with regard to their predictions for the magneto-deformation of MAE samples with a specific particle distribution. Since chain-like microstructures are of significant interest in both experimental [ 8 , 90 , 91 ] and theoretical [ 34 , 79 , 92 , 93 ] investigations, idealized samples comprising helical chains with different angles between two neighboring particles are analyzed. Such structures represent the three-dimensional generalization of wavy chains, which, in the simplified two-dimensional case, have been found to be a possible microstructural explanation for the often observed positive magneto-deformation of MAEs with chain-like microstructures [ 94 ].…”

Section: Comparison Of the Approachesmentioning

confidence: 99%

Magneto-Mechanical Coupling in Magneto-Active Elastomers

et al. 2021

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In the present work, the magneto-mechanical coupling in magneto-active elastomers is investigated from two different modeling perspectives: a micro-continuum and a particle–interaction approach. Since both strategies differ significantly in their basic assumptions and the resolution of the problem under investigation, they are introduced in a concise manner and their capabilities are illustrated by means of representative examples. To motivate the application of these strategies within a hybrid multiscale framework for magneto-active elastomers, their interchangeability is then examined in a systematic comparison of the model predictions with regard to the magneto-deformation of chain-like helical structures in an elastomer surrounding. The presented results show a remarkable agreement of both modeling approaches and help to provide an improved understanding of the interactions in magneto-active elastomers with chain-like microstructures.

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“…[ 68,69 ] Thus, MR elastomer research is naturally connected to the development of magnetically controlled soft actuators for soft robotics. As of 2020, MR elastomers and gels are actively researched to enable unprecedented material properties such as lower off‐state viscosity, [ 70,71 ] 3D printability, [ 72 ] off‐axis anisotropicity for directional actuation, [ 73 ] surface‐modified magnetic particles for better dispersion, [ 74 ] novel polymer matrix for lower cytotoxicity, [ 75 ] and fiber reinforcement of MR elastomers to strengthen the matrix and guide the field‐induced alignment of magnetic particles. [ 76 ] Recently demonstrated applications that harness the dimensional modulation of MR gels and elastomers include precisely controllable peristaltic pumps, [ 77 ] enhanced contrast for tactile displays, [ 78 ] and grippers for transporting objects.…”

Section: Materials: Classification and Fabricationmentioning

confidence: 99%

Magnetically Controlled Soft Robotics Utilizing Elastomers and Gels in Actuation: A Review

Chung

Parsons

Zheng

2020

Advanced Intelligent Systems

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A magnetic field has unique advantages in controlling soft robotics inside of an enclosed space, such as surgical catheters or untethered drug‐delivering robots operating in the human body. Soft actuators, made of elastomers and gels functionalized with magnetically active materials, are natural choices to drive magnetically controlled motions of soft robots. Recent innovations in soft material technologies, including 3D printing, origami/kirigami, tough hydrogels, mechanical metamaterials, and liquid metal‐injected elastomers, offer technological foundations to develop soft actuators and robots with significantly enhanced performance. Herein, an overview of magnetic soft actuators and robots from a materials engineer's perspective is provided. First, the historical background and recent trends of magnetic soft actuators are discussed. Second, the motions of tethered or untethered magnetic soft robotics are classified into aquatic swimmers, terrestrial locomotors, and grippers. Herein, preprogrammed motion under patterned magnetic stimuli is achieved by controlled magnetization of elastomeric materials containing hard magnetic particles. Finally, the applications of magnetically controlled soft robotics in surgical and therapeutic medical devices are discussed.

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The magneto-mechanical properties of off-axis anisotropic magnetorheological elastomers

Cited by 40 publications

References 34 publications

A review on magneto-mechanical characterizations of magnetorheological elastomers

A review on magneto-mechanical characterizations of magnetorheological elastomers

Magneto-Mechanical Coupling in Magneto-Active Elastomers

Magnetically Controlled Soft Robotics Utilizing Elastomers and Gels in Actuation: A Review

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