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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers. Part L, Journal of Materials: Design and Application >Physical modeling and experimental verification of magneto-rheological damper under medium and high frequency excitation
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Physical modeling and experimental verification of magneto-rheological damper under medium and high frequency excitation

机译：中高频激发下磁流变阻尼器的物理建模与实验验证

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摘要

As a promising semi-active device, magneto-rheological damper has been widely used in low-frequency vibration isolation fields (within 20 Hz) such as bridge damping and building seismic resistance. Recently, the application of magneto-rheological damper has extended to medium and high frequency fields such as satellite and power engine vibration control, accompanied with an urgent need of detailed understanding of its output characteristics. In this paper, a comprehensive physical model is established to analyze dynamic performance of the magneto-rheological damper. The model, derived from both Poiseuille and Couette flow, aims to describe the relationship between the flow rate and pressure difference. The compressibility of the magneto-rheological fluid, the inertia of both the fluid and piston assembly, and the friction are involved to capture the medium and high frequency dynamics of the damping force. Theoretical calculation and simulation verification of magnetic circuit are conducted. Then the experiment based on a self-made prototype is carried out. The results show that the damping force calculated by proposed physical model matches well with the experimental results across the predefined range of frequency and coil current levels.
机译：作为一个有前途的半主动装置，磁流变阻尼器已广泛用于低频隔振场（20 Hz内），例如桥梁阻尼和建筑地震抗性。最近，磁流变阻尼器的应用扩展到卫星和电力发动机振动控制等中型和高频场，伴随着迫切需要详细了解其输出特性。本文建立了综合物理模型，以分析磁流变阻尼器的动态性能。源自Poiseuille和Courete流程的模型，旨在描述流速和压力差之间的关系。磁流变流体的可压缩性，流体和活塞组件的惯性以及摩擦涉及捕获阻尼力的介质和高频动力学。进行了磁路的理论计算和仿真验证。然后进行基于自制原型的实验。结果表明，通过提出的物理模型计算的阻尼力与在预定义的频率和线圈电流水平范围内的实验结果匹配良好。

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