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Variable stiffness mechanisms of dual parameters changing magnetorheological fluid devices

机译：双参数变换磁流变流体装置的可变刚度机制

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摘要

Magnetorheological fluid (MRF) dampers are widely used as the variable damping devices in the semi-active vibration control system. In order to further improve the vibration reduction performance, a variable stiffness MRF damper with two chambers and two springs has been proposed recently. According to the test results, both of the damping and stiffness of the device can be controllable by changing the applied current independently. However, the mechanisms of variable stiffness for this device are still not clear. In this paper, the force transmissions of the parts of the variable stiffness MRF damper are analyzed, which reveals the variable stiffness mechanisms of dual parameters changing MRF devices. There are three stages for the variable stiffness MRF damper due to the friction and the yield of MR fluid. These stages can be controlled by the applied current of the different chambers, which changes the equivalent stiffness of the device. The proposed modelling of the device is verified by simulations and tests. In addition, the relationships between the equivalent stiffness and the parameters of the device are derived, which provide the design guidance for the variable stiffness MRF dampers.
机译：磁流变流体（MRF）阻尼器广泛用作半主动振动控制系统中的可变阻尼装置。为了进一步提高减振性能，最近已经提出了具有两个腔室和两个弹簧的可变刚度MRF阻尼器。根据测试结果，通过独立改变施加的电流可以控制装置的阻尼和刚度。然而，该装置的可变刚度的机制仍然尚不清楚。在本文中，分析了可变刚度MRF阻尼器的部件的力传递，其揭示了改变MRF器件的双参数的可变刚度机制。由于MR液体的摩擦和产量，可变刚度MRF阻尼器有三个阶段。这些阶段可以由不同腔室的施加电流控制，该腔室改变了装置的等效刚度。通过模拟和测试验证设备的建议建模。另外，导出了等效刚度和器件参数之间的关系，其为可变刚度MRF阻尼器提供了设计引导。

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  • 来源
    《Smart Materials & Structures》 |2017年第12期|共10页
  • 作者

    Deng Huaxia; Wang Mingxian; Han Guanghui; Zhang Jin; Ma Mengchao; Zhong Xiang; Yu Liandong;

  • 作者单位

    Hefei Univ Technol Sch Instrument Sci &

    Optoelect Engn Hefei 230009 Anhui Peoples R China;

    Hefei Univ Technol Sch Instrument Sci &

    Optoelect Engn Hefei 230009 Anhui Peoples R China;

    Hefei Univ Technol Sch Instrument Sci &

    Optoelect Engn Hefei 230009 Anhui Peoples R China;

    Hefei Univ Technol Sch Instrument Sci &

    Optoelect Engn Hefei 230009 Anhui Peoples R China;

    Hefei Univ Technol Sch Instrument Sci &

    Optoelect Engn Hefei 230009 Anhui Peoples R China;

    Hefei Univ Technol Sch Instrument Sci &

    Optoelect Engn Hefei 230009 Anhui Peoples R China;

    Hefei Univ Technol Sch Instrument Sci &

    Optoelect Engn Hefei 230009 Anhui Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 智能材料;
  • 关键词

    magnetorheological fluid damper; variable stiffness; mechanisms; semi-active control;

    机译：磁流变流体阻尼器;可变刚度;机制;半主动控制;

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