International Journal of Non-Linear Mechanics, Год журнала: 2024, Номер unknown, С. 104936 - 104936
Опубликована: Ноя. 1, 2024
Язык: Английский
Mechanics of Materials, Год журнала: 2023, Номер 184, С. 104742 - 104742
Опубликована: Июль 6, 2023
The complex magneto-mechanical coupling that governs the material response of magnetorheological elastomers (MREs) requires computational tools to assist design process. Computational models are usually based on finite element frameworks often simplify and idealise magnetic source associated boundary conditions (BCs). However, these simplifications may lead important disagreement between actual behaviour modelled one, even at qualitative level. In this work, we provide a comprehensive study influence BCs demonstrate importance considering them in overall material-structure modelling strategy. To end, implement framework model soft- hard-magnetic MREs under fields generated by an idealised far-field uniform source, permanent magnet, coil system, electromagnet with two iron poles. results unveil remarkable heterogeneities computed local magnetostriction depending setup used. A detailed discussion structural contributions provides robust, rigorous more importantly necessary route for future works.
Язык: Английский
Процитировано
26
International Journal of Solids and Structures, Год журнала: 2024, Номер 294, С. 112789 - 112789
Опубликована: Март 22, 2024
In the finite magnetoelastic deformation context, Zeeman magnetic energy on its own is found to be inconsistent with general theory of nonlinear magnetoelasticity. An appropriate additional term, depending definition reference configuration magnetization, used modify total confer consistency. particular, this confirms that Cauchy stress tensor symmetric, in contrast recent conclusions literature where was utilized.
Язык: Английский
Процитировано
11
International Journal of Mechanical Sciences, Год журнала: 2024, Номер 282, С. 109688 - 109688
Опубликована: Авг. 29, 2024
Язык: Английский
Процитировано
9
Smart Materials and Structures, Год журнала: 2024, Номер 33(4), С. 043001 - 043001
Опубликована: Фев. 21, 2024
Abstract Hard-magnetic soft materials (hMSMs) are smart composites that consist of a mechanically polymer matrix impregnated with hard magnetic filler particles. This dual-phase composition renders them exceptional magneto-mechanical properties allow to undergo large reversible deformations under the influence external fields. Over last decade, hMSMs have found extensive applications in robotics, adaptive structures, and biomedical devices. However, despite their widespread utility, they pose considerable challenges fabrication characterization owing multi-phase nature, miniature length scales, nonlinear material behavior. Although noteworthy attempts been made understand coupled rudimentary concepts inter-phase interactions give rise mechanical nonlinearity remain insufficiently understood, this impedes further advancements. holistic review addresses these standalone bridges gaps by providing thorough examination myriad techniques, applications, experimental, modeling approaches. Specifically, presents wide spectrum ranging from traditional molding cutting-edge four-dimensional printing, unbounded prospects diverse fields research. The covers various approaches, including continuum frameworks encompassing phenomenological homogenization models, as well microstructural models. Additionally, it emerging techniques like machine learning-based context hMSMs. Finally, expansive landscape promising systems is provided for better understanding prospective
Язык: Английский
Процитировано
8
International Journal of Solids and Structures, Год журнала: 2024, Номер 290, С. 112662 - 112662
Опубликована: Янв. 12, 2024
Язык: Английский
Процитировано
7
Journal of the Mechanics and Physics of Solids, Год журнала: 2024, Номер 190, С. 105731 - 105731
Опубликована: Июнь 12, 2024
Язык: Английский
Процитировано
6
Smart Materials and Structures, Год журнала: 2024, Номер 33(4), С. 045026 - 045026
Опубликована: Март 7, 2024
Abstract Magnetorheological elastomers (MREs) are polymers with viscoelastic properties that can be adjusted by manipulating the magnetic field. When MREs combined reinforcing fabrics, a new category of materials known as MRE composites (MRECs) created, which not only possess characteristics but also enhance their rigidity. This study focuses on investigating supersonic aeroelastic instability rectangular sandwich plate laminated MREC core layer and functionally graded porosities face layers. Additionally, is supported an elastic foundation subjected to airflow. investigation presents improved first-order shear deformation theory, postulating parabolic distribution stresses. Consequently, transverse stresses rendered zero at surface every individual layer; thus, requirement for correction in this theory eliminated. In addition, 8-node elements implemented circumvent necessity distinct handling shear-locking. The pressure acting structure considered using piston theory. Micromechanical approaches, such Halpin‐Tsai rule mixture employed determine effective mechanical dynamic equations derived Hamilton’s principle finite element method. examines impact different fields, fiber volume fraction, factors, layering angles, geometry, boundary conditions flutter frequency.
Язык: Английский
Процитировано
5
Proceedings of the Royal Society A Mathematical Physical and Engineering Sciences, Год журнала: 2023, Номер 479(2278)
Опубликована: Окт. 1, 2023
This paper reviews macroscopic aspects of the theory magnetoelastostatics, starting with a brief summary experimental and theoretical contributions leading to development current state-of-the-art. It offers some different perspectives than hitherto, incompressible materials being main concern. The use so-called total energy (density) functions is highlighted along their associated stress tensors succinct forms constitutive equations. symmetry Cauchy tensor, which incorporates non-symmetric Maxwell within material, emphasized it noted that such stress, often appearing in literature, thereby avoided. illustrated for simple prototype boundary-value problems, specifically homogeneous deformation an infinite slab magnetoelastic material presence magnetic field non-homogeneous extension inflation infinitely long circular cylindrical tube either axial or circumferential field.
Язык: Английский
Процитировано
11
Gels, Год журнала: 2024, Номер 10(1), С. 80 - 80
Опубликована: Янв. 21, 2024
“Gel-type” soft and stretchable magneto-mechanical composites made of silicone rubber iron particles are in focus because their high magnetic sensitivity, intelligence perspective. The “intelligence” mentioned here is related to the “smartness” these magneto-rheological elastomers (MREs) tune “mechanical stiffness” “output voltage” energy-harvesting applications by switching fields. Hence, this work develops “gel-type” based on reinforced with a hybrid piezoelectric fillers such as barium titanate. A further aspect relies studying mechanical stability stretchability composites. For example, was 105% (control), higher for 158% (60 per 100 parts (phr) titanate, BaTiO3), 149% phr electrolyte particles, EIP), 148% BaTiO3 + EIP hybrid). Then, will be investigated explore sensitivity change stiffness under field. anisotropic effect 14.3% 4.4% Finally, energy harvesting performed. isotropic samples exhibit ~20 mV ~5.4 ~3.7 However, ~5.6 ~8.8 In end, prepared have three configurations, namely one electro-mechanical aspects, another third both features. Overall, experimental outcomes make fabricated useful different intelligent applications.
Язык: Английский
Процитировано
4
Science Advances, Год журнала: 2025, Номер 11(1)
Опубликована: Янв. 3, 2025
Having been predominantly observed in rigid metal and alloys since 1865, the magnetoelastic effect was recently experimentally discovered a soft matter system used as new working mechanism for energy health care applications. Here, theoretical framework is presented proven to be universally accurate robust interpreting giant across systems subjected various deformation modes, micromagnet concentrations, magnetization profiles, geometric structures. The theory uncovers substantial, unique phenomena systems, including magnetic pole reversal under localized compression. This work lays firm foundation an in-depth understanding practical applications of systems.
Язык: Английский
Процитировано
0