Hysteretic behavior of soft magnetic elastomer composites

Krautz, Maria; Werner, David; Schrödner, M.; Funk, Alexander; Jantz, Alexander; Popp, J.; Eckert, J.; Waske, Anja

doi:10.1016/j.jmmm.2016.11.048

Cited by 34 publications

(26 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fabrication and experimental characterization of such magnetoelastic elastomers are discussed by, to quote a few, Bossis et al (2001), Farshad and Benine (2004), Gong et al (2005), Wang et al (2006), and Krautz et al (2017). They typically contain numerous tiny ferromagnetic particles (like iron) embedded in a polymer matrix such as rubber.…”

Section: Introductionmentioning

confidence: 99%

Limit points in the free inflation of a magnetoelastic toroidal membrane

Reddy

Saxena

2017

International Journal of Non-Linear Mechanics

View full text Add to dashboard Cite

One common phenomenon native to inflation of membranes is the elastic limit-point instability-a bifurcation point at which the membrane begins to deform enormously at the slightest increase of pressure. In the case of magnetoelastic materials, there is another possible phenomenon which we call magnetic limitpoint instability, a state referring to the non-existence of an equilibrium state -either stable or unstable. In this work, we are concerned with such instabilities in an incompressible isotropic magnetoelastic toroidal membrane with an initial circular cross-section. A non-uniform magnetic field is generated using a circular current carrying loop placed inside the membrane in addition to inflation by a uniform hydrostatic pressure. An energy formulation based on magnetization is used to model the magneto-mechanical coupling along with a Mooney-Rivlin constitutive model for the elastic strain energy density. Computations show that the magnetic field strongly influences the location of elastic limit points and in some cases can cause them to vanish. Multiple equilibrium states are obtained as solutions of the governing equations and a criterion based on second variation is employed to determine their stability. Existence and dependence of magnetic limit point on the magnetic field is demonstrated. While the quantitative results obtained here are specific to the toroidal geometry, the deformation behaviour can be generalised to any magnetoelastic membrane.

show abstract

Section: Introductionmentioning

confidence: 99%

Limit points in the free inflation of a magnetoelastic toroidal membrane

Reddy

Saxena

2017

International Journal of Non-Linear Mechanics

View full text Add to dashboard Cite

show abstract

“…Generally, in the composites fabrication after the adding of the magnetic particles into the matrix, a curing is carried out either in the absence (isotropic MREs) or in the presence (anisotropic MREs) of an external magnetic field. The efficiency of the MRE composite, oxidative and chemical stability, and durability, strictly depends on various factors, among those, particles aggregation plays a key role, considering that the interface particles-matrix is determinant in the durability of the composite [12,13]. Thus, in designing MRE composites the main purpose is to obtain the highest MR effect, by inducing magnetization of the particles used as filler [14].…”

Section: Introductionmentioning

confidence: 99%

Magneto-Rheological Elastomer Composites. A Review

et al. 2020

View full text Add to dashboard Cite

Magneto-rheological elastomer (MRE) composites belong to the category of smart materials whose mechanical properties can be governed by an external magnetic field. This behavior makes MRE composites largely used in the areas of vibration dampers and absorbers in mechanical systems. MRE composites are conventionally constituted by an elastomeric matrix with embedded filler particles. The aim of this review is to present the most outstanding advances on the rheological performances of MRE composites. Their distribution, arrangement, wettability within an elastomer matrix, and their contribution towards the performance of mechanical response when subjected to a magnetic field are evaluated. Particular attention is devoted to the understanding of their internal micro-structures, filler–filler adhesion, filler–matrix adhesion, and viscoelastic behavior of the MRE composite under static (valve), compressive (squeeze), and dynamic (shear) mode.

show abstract

“…Jung and An et al studied the MRE composites based on natural rubber, carbonyl iron particles, or modified silane–coated carbonyl iron . Krautz et al studied hysteretic behavior of soft MREs . Han et al studied the field stiffening effect of MREs …”

Section: Introductionmentioning

confidence: 99%

“…32,33 Krautz et al studied hysteretic behavior of soft MREs. 34 Han et al studied the field stiffening effect of MREs. 35 However, it is not clear what are the effects of the shape, volume content, and magnitude of magnetic field above 0.5 T of the materials.…”

mentioning

confidence: 99%

Compressive properties of magnetorheological elastomer with different magnetic fields and types of filler

Lee

Kumar

Lee

2019

Polymers for Advanced Techs

View full text Add to dashboard Cite

Magnetorheological elastomer (MRE) specimens were prepared to find the optimum compressive characteristics using different types and amounts of iron powder. A magnetic field of up to 2 T was applied during vulcanization. Among the four types of iron powders, the specimen with round‐shaped carbonyl iron powder and small grain size shows higher magnetic effects than that with bigger and irregularly shaped electrolyte iron powder. However, the compressive modulus of the rubber with electrolyte iron powder is higher without magnetic treatment at a given amount. In general, the bigger and irregularly shaped iron particles tend to move slowly and produce nonuniform distribution when a magnetic field is applied. The experimental results show that the mechanical properties are better when applying a magnetic field of 1.5 T compared with 2.0 T during the specimen vulcanization. Applying a magnetic field of 300 mT during the compression test enhanced the compressive modulus by 12% to 15%. The rate of increase of the modulus decreased exponentially with prestrain.

show abstract

Hysteretic behavior of soft magnetic elastomer composites

Cited by 34 publications

References 22 publications

Limit points in the free inflation of a magnetoelastic toroidal membrane

Limit points in the free inflation of a magnetoelastic toroidal membrane

Magneto-Rheological Elastomer Composites. A Review

Compressive properties of magnetorheological elastomer with different magnetic fields and types of filler

Contact Info

Product

Resources

About