Semi-active inerters using magnetorheological fluid: a feasibility study
Semi-active inerters using magnetorheological fluid: a feasibility study
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DOI：
10.1117/12.2300749
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发表时间：
2018-03
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影响因子：
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通讯作者：
Matthew Tipuric;P. Deastra;D. Wagg;N. Sims
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文献类型：
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作者：
Matthew Tipuric;P. Deastra;D. Wagg;N. Sims
惯性器是电容器的机械模拟物，其中装置上的力与相对加速度成比例，而不是绝对加速度。这个概念可以在各种各样的工程振动问题中提供有吸引力的性能，因为工程师可以在不显着增加结构的物理质量的情况下调整设备。因此，在过去的二十年里，有许多研究探索了它们在桥梁振动、高层建筑隔震、车辆悬挂和其他工程问题中的应用。已经提出了惯性器系统的几种配置，典型地涉及振动吸收器中的惯性器，或者通过使用惯性器作为隔离系统的一部分。然而，到目前为止，已经有有限的研究，探讨了半主动装置，如磁流变液阻尼器的组合惯性。此外，由于惯性器的一种表现形式涉及液压流体的使用，因此磁流变效应可以集成到惯性器本身中。本研究探讨这种方法的可行性，为实际情况。准静态模型的开发，结合现有的模型的流体惯性与简化模型的磁流变液。探讨了阻尼性能和惯性性能之间的权衡。该模型，然后在案例研究中使用，其潜在的使用被称为平行布局惯性阻尼器的控制策略进行了研究。
An inerter is a mechanical analogue to a capacitor, where the force across the device is proportional to relative, rather than absolute, acceleration. This concept can offer attractive performance in a wide variety of engineering vibration problems, because the engineer can tune the device without dramatically increasing the physical mass of the structure. Consequently, there have been many studies over the last two decades that have explored their application to bridge vibrations, seismic isolation of tall buildings, vehicle suspensions, and other engineering problems. Several configurations of inerter systems have been proposed, typically involving the inerter in a vibration absorber, or by using the inerter as part of an isolation system. However, to date there have been limited studies that have explored the combination of inerters with semi-active devices such as magnetorheological fluid dampers. Furthermore, because one manifestation of inerters involves the use of hydraulic fluid, it is possible for magnetorheological effects to be integrated into the inerter itself. The present study investigates the feasibility of this approach for practical scenarios. A quasi-static model is developed, combining an existing model of a fluid inerter with simplified models for magnetorheological fluids. The trade-off between damping performance and inerter performance is explored. The model is then used in a case study, where its potential use in a control strategy known as a parallel-layout inerter damper is investigated.