The present study aims at the development of a novel semi-active adaptive tuned vibration absorber (SATVA) capable of tuning its natural frequency adaptively in low frequency range. The absorber consists of a multilayer sandwich beam featuring magnetorheological elastomer (MRE) and integrated U-shaped electromagnets which are attached at the top and bottom layers of the sandwich beam. Electromagnets are designed to provide the required magnetic field to alter the stiffness of the MRE layers while also acting as the active mass of the absorber. Based on the characterization of the shear and loss modulus of the fabricated MRE samples, the finite element (FE) model of the proposed SATVA has been developed to analyze the absorber to meet the design requirements and also to evaluate its dynamic performance. The proposed SATVA is then fabricated and experimental set-ups are designed to validate the electromagnet and FE models. The frequency response function of the proposed SATVA is t...

中文翻译：

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基于磁流变弹性体的新型自适应调谐减振器：设计，分析和实验表征

本研究旨在开发一种新型的半主动式自适应调谐减振器（SATVA），它能够在低频范围内自适应地调节其固有频率。吸收器由多层夹层梁组成，其特征是具有磁流变弹性体（MRE）和集成的U形电磁铁，它们附着在夹层梁的顶层和底层。电磁体设计为提供所需的磁场，以改变MRE层的刚度，同时还充当吸收器的有效质量。基于对制作的MRE样品的剪切模量和损耗模量的表征，开发了拟议SATVA的有限元（FE）模型，以分析吸收器以满足设计要求并评估其动态性能。然后制造提出的SATVA，并设计实验装置以验证电磁体和有限元模型。拟议中的SATVA的频率响应函数为...