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Dynamical Modeling and Experimental Study of a Small-Scale Magnetorheological Damper

机译:小型磁流变阻尼器的动力学建模和实验研究

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摘要

This paper introduces a multiphysics finite-element dynamic model for a small-scale magnetorheological (MR) damper. The model includes the analysis of the magnetic flux lines, field intensity, non-Newtonian fluid flow, and evaluation of the resistance force under prescribed motion and standard electrical test signals. A new regularized viscosity definition, which improves model solvability, is employed to describe the quasi-Bingham plastic behavior of the MR fluid. Extensive model validation was performed through comparison with the analytic model presented in the previous work and with the data from experimental testing. This model is intended to be used in the optimization of the MR dampers employed in the development of an upper limb orthosis, for tremor attenuation in patients suffering from pathological tremor.
机译:本文介绍了一种用于小型磁流变(MR)阻尼器的多物理场有限元动力学模型。该模型包括磁通线分析,磁场强度,非牛顿流体流动,以及在规定的运动和标准电测试信号下评估阻力。采用新的规范化粘度定义(可改善模型的可求解性)来描述MR流体的准宾汉塑性行为。通过与先前工作中介绍的分析模型以及来自实验测试的数据进行比较,进行了广泛的模型验证。该模型旨在用于优化上肢矫形器开发中使用的MR阻尼器,以减轻患有病理性震颤的患者的震颤。

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