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首页> 外文期刊>Journal of Tribology >Frictional Hysteresis Model for Stick-Slip Behavior of Magnetorheological Elastomer Under Various Magnetic Field Strengths
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Frictional Hysteresis Model for Stick-Slip Behavior of Magnetorheological Elastomer Under Various Magnetic Field Strengths

机译：各种磁场强度下磁流变弹性体粘滑行为的摩擦滞后模型

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摘要

In recent studies, many mathematical models have been introduced to describe the shear deformation characteristics of a magnetorheological elastomer (MRE). Owing to its beneficial elastomeric characteristics, an MRE can be adopted in novel controllable devices such as friction dampers and brakes. In this study, mathematical models are introduced to identify the frictional behavior of an MRE under different magnetic field conditions. Specifically, the improved LuGre (I-LuGre) model and the strain-stiffening model are compared using a system identification method. To identify the model that best describes the stick/slip behavior of an MRE, a harmonic frictional force was exerted on its surface with magnetic fields of varying strength. The I-LuGre model showed a precise correlation with the experimental results, and the strain-stiffening model was shown to have a simple structure for describing the frictional phenomenon. The system output error of the I-LuGre model remained within smaller errors than that of the strain-stiffening model. The parameter variations of each model that can be utilized to construct a control strategy are provided herein.
机译：在最近的研究中，已经引入了许多数学模型来描述磁流变弹性体（MRE）的剪切变形特性。由于其有益的弹性特性，可以在新颖的可控装置中采用MRE，例如摩擦阻尼器和制动器。在该研究中，引入了数学模型以确定不同磁场条件下MRE的摩擦行为。具体地，使用系统识别方法比较改进的Lugre（I-Lugre）模型和应变加强模型。为了识别最能描述MRE的杆/滑动行为的模型，用不同强度的磁场施加谐波摩擦力。 I-Lugre模型显示与实验结果有精确的相关性，并且显示应变加强模型具有简单的结构，用于描述摩擦现象。 I-LUGRE模型的系统输出误差仍然在较小的误差范围内比应变加强模型的误差。这里提供了可以用于构造控制策略的每个模型的参数变型。

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