采用精心定制的磁流变润滑脂的线圈外部支架:设计、表征和建模

IF 2.4 3区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Intelligent Material Systems and Structures Pub Date : 2024-08-01 DOI:10.1177/1045389x241261755
Huixing Wang, Kun Qian, Mengwei Du, Jiong Wang
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引用次数: 0

摘要

为了避免传统内置线圈结构和磁流变液沉降造成的磁流变悬置性能下降,提出了一种考虑沉降和零场粘度平衡的线圈外置磁流变悬置,并对其动态性能进行了实验研究。首先,通过调整润滑脂基体中锂基稠化剂的含量,制备出一种复合锂基磁共振润滑脂,在保持稳定的前提下满足相对较低的零场粘度要求,并研究了其在剪切和挤压模式下的流变特性。然后,设计了在径向阀门-挤压混合模式下工作的线圈外部磁共振支架,并对磁路进行了评估,重点关注其提供满意磁场的能力。在 0.5 至 1.5 毫米的不同位移幅度下,使用频率范围为 0.5 至 5 赫兹的振荡周期,研究了利用精心定制的磁共振润滑脂作为载液的线圈外部磁共振支架在各种磁场下的动态行为。结果表明,新型磁共振润滑脂支架可以在有限的行程内提供高达 17.81 kN 的较大阻尼力。最后,提出了一个 Bouc-Wen-Baber-Noori 参数模型来描述所提出的磁共振润滑脂固定架的颈缩滞后行为,并进行了数值研究,以探讨该模型的一些关键参数对力-位移环的影响。结果表明,该模型与实验数据吻合良好,可用于动力学分析和实时控制。
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A coil external mount featuring carefully-tailored magnetorheological grease: Design, characterization, and modeling
To avoid performance degradation of the magnetorheological (MR) mount due to the traditional inside built-in coil structure and the settling of the MR fluid, a coil external MR mount featuring carefully-tailored MR grease considering sedimentation and zero-field viscosity balance is proposed and its dynamic performances are experimentally investigated. Firstly, a kind of composite lithium-based MR grease is firstly prepared by adjusting the content of Lithium based thickener in the lubricating grease matrix to meet the requirement of relatively low zero-field viscosity under the premise of maintaining stability, and its rheological properties under shear and squeeze mode are studied. Then the coil external MR mount operating in the radial valve-squeeze mixed mode is designed, with an evaluation of the magnetic circuit focusing on its capability to supply a satisfactory magnetic field. The dynamic behavior of coil external MR mount utilizing the carefully-tailored MR grease as the carrier fluid under various magnetic fields has been investigated using oscillatory cycles over a frequency range of 0.5–5 Hz for various displacement amplitudes from 0.5 to 1.5 mm. The results demonstrate that the novel MR grease mount could provide large damping force up to 17.81 kN with a limited stroke. Finally, a Bouc–Wen–Baber–Noori parametric model is proposed to describe the necking hysteretic behavior of the proposed MR grease mount, and a numerical study was conducted to investigate the effects of some key parameters of the model on force-displacement loops. It shows that the model agrees well with the experimental data and it can be used for the dynamics analysis and the real-time control.
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来源期刊
Journal of Intelligent Material Systems and Structures
Journal of Intelligent Material Systems and Structures 工程技术-材料科学:综合
CiteScore
5.40
自引率
11.10%
发文量
126
审稿时长
4.7 months
期刊介绍: The Journal of Intelligent Materials Systems and Structures is an international peer-reviewed journal that publishes the highest quality original research reporting the results of experimental or theoretical work on any aspect of intelligent materials systems and/or structures research also called smart structure, smart materials, active materials, adaptive structures and adaptive materials.
期刊最新文献
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