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Adaptive dynamic moduli of magnetorheological elastomers: From experimental identification to microstructure-based modeling

机译：磁流变弹性体的自适应动态模态：从实验鉴定到基于微观结构的造型

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In this study a dynamic physic-based model considering the microstructure of isotropic and anisotropic MREs is developed to accurately predict their field-dependent viscoelastic properties. A cubic network in which magnetic particles are located at the junctures and connected with elastic springs is utilized to derive the dynamic governing equations of motion of particles to evaluate their relaxation spectrum while moving parallel and normal to the field direction. A dipole magnetic saturation model is subsequently implemented to derive the field-dependent dynamic storage and loss moduli of the MREs. An experimental test is also designed to identify few constant material parameters in the model and also to validate the developed model. Results for storage and loss moduli are finally compared with those of experiment in a wide range of excitation frequency and magnetic field up to saturation. It has been shown that there is a good agreement between experiment and theoretical results.
机译：在这项研究中，考虑到各向同性和各向异性MRE的微观结构的基于动态物理学模型，以准确地预测其依赖性粘弹性。 其中磁性颗粒位于接合处并与弹性弹簧连接的立方网络，用于导出粒子的运动的动态控制方程，以评估它们的弛豫光谱，同时平行地和垂直于场方向移动。 随后实施了偶极磁饱和度模型以导出MRE的现场依赖动态存储和损耗模量。 实验测试还旨在识别模型中的少量恒定材料参数，也可以验证开发的模型。 储存和损耗模量的结果与各种激励频率和磁场的实验相比，最终与饱和度的各种励磁频率和磁场相比。 已经表明，实验与理论结果之间存在良好的一致性。

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