中国物理B ›› 2024, Vol. 33 ›› Issue (5): 50706-050706.doi: 10.1088/1674-1056/ad21f6

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Dynamic analysis of a novel multilink-spring mechanism for vibration isolation and energy harvesting

Jia-Heng Xie(谢佳衡)1, Tao Yang(杨涛)2,†, and Jie Tang(唐介)3   

  1. 1 Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518057, China;
    2 Department of Engineering Mechanics, Northwest Polytechnical University, Xi'an 710072, China;
    3 Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province, School of Mechanics and Aerospace, Southwest Jiaotong University, Chengdu 610031, China
  • 收稿日期:2023-12-08 修回日期:2024-01-19 接受日期:2024-01-24 出版日期:2024-05-20 发布日期:2024-05-20
  • 通讯作者: Tao Yang E-mail:yangtscn@nwpu.edu.cn
  • 基金资助:
    Project supported by Guangdong Basic and Applied Basic Research Foundation (Grant Nos. 2022A1515010967 and 2023A1515012821), the National Natural Science Foundation of China (Grant Nos. 12002272 and 12272293), and Opening Project of Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province (Grant No. SZDKF-202101).

Dynamic analysis of a novel multilink-spring mechanism for vibration isolation and energy harvesting

Jia-Heng Xie(谢佳衡)1, Tao Yang(杨涛)2,†, and Jie Tang(唐介)3   

  1. 1 Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518057, China;
    2 Department of Engineering Mechanics, Northwest Polytechnical University, Xi'an 710072, China;
    3 Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province, School of Mechanics and Aerospace, Southwest Jiaotong University, Chengdu 610031, China
  • Received:2023-12-08 Revised:2024-01-19 Accepted:2024-01-24 Online:2024-05-20 Published:2024-05-20
  • Contact: Tao Yang E-mail:yangtscn@nwpu.edu.cn
  • Supported by:
    Project supported by Guangdong Basic and Applied Basic Research Foundation (Grant Nos. 2022A1515010967 and 2023A1515012821), the National Natural Science Foundation of China (Grant Nos. 12002272 and 12272293), and Opening Project of Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province (Grant No. SZDKF-202101).

摘要: Due to technical limitations, existing vibration isolation and energy harvesting (VIEH) devices have poor performance at low frequency. This paper proposes a new multilink-spring mechanism (MLSM) that can be used to solve this problem. The VIEH performance of the MLSM under harmonic excitation and Gaussian white noise was analyzed. It was found that the MLSM has good vibration isolation performance for low-frequency isolation and the frequency band can be widened by adjusting parameters to achieve a higher energy harvesting power. By comparison with two special cases, the results show that the MLSM is basically the same as the other two oscillators in terms of vibration isolation but has better energy harvesting performance under multistable characteristics. The MLSM is expected to reduce the impact of vibration on high-precision sensitive equipment in some special sites such as subways and mines, and at the same time supply power to structural health monitoring devices.

关键词: multilink-spring mechanism, nonlinear dynamics, vibration isolation, energy harvester

Abstract: Due to technical limitations, existing vibration isolation and energy harvesting (VIEH) devices have poor performance at low frequency. This paper proposes a new multilink-spring mechanism (MLSM) that can be used to solve this problem. The VIEH performance of the MLSM under harmonic excitation and Gaussian white noise was analyzed. It was found that the MLSM has good vibration isolation performance for low-frequency isolation and the frequency band can be widened by adjusting parameters to achieve a higher energy harvesting power. By comparison with two special cases, the results show that the MLSM is basically the same as the other two oscillators in terms of vibration isolation but has better energy harvesting performance under multistable characteristics. The MLSM is expected to reduce the impact of vibration on high-precision sensitive equipment in some special sites such as subways and mines, and at the same time supply power to structural health monitoring devices.

Key words: multilink-spring mechanism, nonlinear dynamics, vibration isolation, energy harvester

中图分类号:  (Mechanical instruments and equipment)

  • 07.10.-h
05.20.Dd (Kinetic theory) 07.10.Fq (Vibration isolation) 45.20.dh (Energy conservation)