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A novel rotational inertia damper for amplifying fluid resistance: Experiment and mechanical model

机译：用于放大流体电阻的新型旋转惯性阻尼器：实验与机械模型

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摘要

An inerter is a two-terminal mechanical device with the property of generating a resisting force that is proportional to the relative acceleration across its terminals. Due to its distinct mass amplification and negative stiffness effects, inerter has been applied to enhance the performance of conventional control systems, e.g. tuned mass damper (TMD) and vibration isolation system (VIS). Very recently, a novel inerter-based damper dubbed rotational inertia damper (RID) that is capable of generating a significant damping force was proposed by the authors to control the vibrations of offshore platforms, and its control effectiveness was examined through analytical studies. In the present study, a RID prototype was manufactured and tested under harmonic excitations for an in-depth understanding and demonstration of its mechanical behaviors. A precise mechanical model considering inerter nonlinearities is proposed to predict the behaviors of the RID, and the corresponding parameters are identified by using a nonlinear least squares method based on the experimental results. The theoretical results predicted by the proposed mechanical model are then compared with the experimental results, good agreements are achieved. The results demonstrate that the developed RID has a good capacity for energy dissipation, and the proposed mechanical model is accurate in predicting the behaviors of the RID.
机译：活动器是双端子机械装置，其具有产生与其端子的相对加速度成比例的抵抗力。由于其不同的大众放大和负刚度效应，已应用了活泼，以提高传统控制系统的性能，例如，调谐质量阻尼器（TMD）和隔振系统（VI）。最近，作者提出了一种具有能够产生显着阻尼力的旋转惯性阻尼器（RAD）的新型旋转惯性阻尼器（RID），以控制海上平台的振动，通过分析研究检查其控制效果。在本研究中，在谐波激发下制造并测试了摆脱原型，以进行深入的理解和展示其机械行为。考虑离外非线性的精确机械模型提出了预测除去的行为，并且通过基于实验结果的非线性最小二乘法来识别相应的参数。然后将所提出的机械模型预测的理论结果与实验结果相比，实现了良好的协议。结果表明，发达的除去具有良好的能量耗散能力，并且所提出的机械模型可以准确地预测除去的行为。

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  • 来源
    《Mechanical systems and signal processing》 |2021年第2期|107313.1-107313.20|共20页
  • 作者

    Ruisheng Ma; Kaiming Bi; Hong Hao;

  • 作者单位

    Centre for Infrastructure Monitoring and Protection School of Civil and Mechanical Engineering Curtin University Kent Street Bentley WA 6102 Australia;

    Centre for Infrastructure Monitoring and Protection School of Civil and Mechanical Engineering Curtin University Kent Street Bentley WA 6102 Australia;

    Centre for Infrastructure Monitoring and Protection School of Civil and Mechanical Engineering Curtin University Kent Street Bentley WA 6102 Australia;

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  • 正文语种 eng
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  • 关键词

    Rotational inertia damper; Inerter; Experimental study; Mechanical model; Model identification;

    机译：旋转惯性阻尼器;interter;实验研究;机械模型;模型识别;

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