A low-frequency micro-vibration absorber based on a designable quasi-zero stiffness beam

Authors：Lian, Xinyu; Deng, Huaxia^*; Han, Guanghui; Jiang, Fan^*; Zhu, Lei; Shao, Mingdong; Liu, Xintong; Hu, Rongchang; Gao, Yuexiao; Ma, Mengchao; Zhong, Xiang

Source：Aerospace Science and Technology, 2023, 132: 108044.

DOI：10.1016/j.ast.2022.108044

• Micro vibration
• Low frequency
• Nonlinear stiffness
• Vibration absorber
• Passive control
• Multi -direction

This paper presents a low-frequency micro-vibration absorber based on a beam with designable nonlinear stiffness. The material and dimension parameters of the nonlinear characteristics of the beam are discussed by the finite element method (FEM). Based on the nonlinear stiffness characteristics of the beam, the designed micro-vibration absorber has a low-frequency vibration absorption effect and multiple working modes in multiple directions. The effects of structural parameters on the stiffness characteristics of the designed beam are discussed to explore the low-frequency performance. The results of FEM analysis are verified by vibration absorption experiments, and the effectiveness of the lowfrequency vibration absorbers is verified by aerospace micro-vibration experiments.

• Institution
  中国科学院