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Development and performance evaluation of rotary magnetorheological damper with T-shape rotor for seat suspension

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Abstract

In this paper, a rotary MR damper with T-shape rotor used for automobile scissors type seat suspension is developed. The T-shape rotor is composed of left and right magnetic sleeves, a middle magnetic disk, a non-magnetic sleeve and a non-magnetic ring. Meanwhile, this structure enables the damper to form six effective fluid flow channels. The structure and working principle of the rotary MR damper are described, its magnetic circuit is analyzed, and the mathematical model of output damping torque is also established. Then, in order to investigate the magnetic flux distribution and magnetic flux density of the rotary MR damper, the ANSYS software is employed to simulate its electromagnetic field. Moreover, according to the torque performance test, the variation of the output damping torque with current and speed is explored, and the experimental results showed that the maximum output torque is about 11.8 Nm under the applied current of 2 A and the rotational speed of 120 r/min. The model of the scissor seat suspension is built for the damping performance test, and the experimental results revealed that the peak damping force of the scissor seat suspension is about 350 N under the applied current of 2 A, the vibration amplitude of 15 mm and the vibration frequency of 0.5 Hz.

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Acknowledgments

The authors would like to thank the National Natural Science Foundation of China (No. 52165004), Key Project of Natural Science Foundation of Jiangxi Province, China (No. 20212ACB204002), Key Projects of Hangzhou Agricultural and Social Development Research Program (No. 20212013B04), and Zhejiang Province Basic Public Welfare Research Project (No. LGG20E050007) for the financial support.

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Authors and Affiliations

  1. School of Engineering, Zhejiang University City College, Hangzhou, 310015, Zhejiang, China

    Qiang Zuo

  2. Key Laboratory of Conveyance and Equipment, Ministry of Education, East China Jiaotong University, Nanchang, 330013, Jiangxi, China

    Feng Zhou, Han Zheng, Gang Li & Guoliang Hu

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  1. Qiang Zuo
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  2. Feng Zhou
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  3. Han Zheng
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  4. Gang Li
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  5. Guoliang Hu
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Correspondence to Guoliang Hu.

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Technical Editor: Pedro Manuel Calas Lopes Pacheco.

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Zuo, Q., Zhou, F., Zheng, H. et al. Development and performance evaluation of rotary magnetorheological damper with T-shape rotor for seat suspension. J Braz. Soc. Mech. Sci. Eng. 43, 563 (2021). https://doi.org/10.1007/s40430-021-03298-6

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  • DOI: https://doi.org/10.1007/s40430-021-03298-6

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