Magnetostatic Spring Softening and Stiffening in Magneto-Mechanical Resonator Systems
Magnetostatic Spring Softening and Stiffening in Magneto-Mechanical Resonator Systems
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DOI：
10.1109/tmag.2019.2906864
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发表时间：
2019-04
影响因子：
2.1
通讯作者：
I. Grinberg;A. Mangu;Christopher W. Peterson;Elias Wilken-Resman;Jennifer T. Bernhard;G. Bahl
中科院分区：
文献类型：
--
作者：
I. Grinberg;A. Mangu;Christopher W. Peterson;Elias Wilken-Resman;Jennifer T. Bernhard;G. Bahl
将磁体集成到共振的机械系统中可以实现有趣的功能，例如无需任何物理接触即可调谐机械共振频率或在谐振器之间诱导耦合的能力。在这里，我们介绍了一个完整的磁力系统的分析模型和实验研究。利用点偶极子近似，我们研究了静磁弹簧效应，它可以软化或硬化弹簧，这取决于磁偶极子的方向和空间位置。我们使用平移和转动共振作为常见的演示情况，并在实验中演示了弹簧的软化和硬化效应。
Integrating magnets into resonant mechanical systems allows for intriguing capabilities, such as the ability to tune the mechanical resonance frequency or induce coupling between resonators without any physical contact. Here, we present analytical models as well as the experimental study of an integrated magneto-mechanical system. Using a point dipole approximation, we explore the magneto-static spring effect, which can either soften or stiffen a spring depending on dipole orientation and spatial position of the magnets. We use translational and rotational resonance as commonly encountered demonstrative cases and, experimentally, demonstrate both the spring softening and stiffening effects.