Vibration response analysis of a two-stage vibration isolation system for large airborne equipment

Hongyan Zhu, Pengzhen Lv, Xiaochong Wu, Yuansheng Wang, Wei Liu, Huagang Lin, Zhufeng Yue

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Purpose: This paper aims to propose a two-stage vibration isolation system for large airborne equipment to isolate aircraft vibration load. Design/methodology/approach: First, the vibration isolation law of the discrete model of large airborne equipment under different damping ratios, stiffness ratios and mass ratios is analyzed, which guides the establishment of a three-dimensional solid model of large airborne equipment. Subsequently, the vibration isolation transfer efficiency is analyzed based on the three-dimensional model of the airborne equipment, and the angular and linear vibration responses of the two-stage vibration isolation system under different frequencies are studied. Findings: Finally, studies have shown that the steady-state angular vibration at the non-resonant frequency changes little. In contrast, the maximum angular vibration at the resonance peak reaches 0.0033 rad, at least 20 times the response at the non-resonant frequency. The linear vibration at the resonant frequency is at least 2.14 times the response at the non-resonant frequency. Obviously, the amplification factor of linear vibration is less than that of angular vibration, and angular vibration has the most significant effect on the internal vibration of airborne equipment. Originality/value: The two-stage vibration isolation equipment designed in this paper has a positive guiding significance for the vibration isolation design of large airborne equipment.

Original languageEnglish
Pages (from-to)1149-1164
Number of pages16
JournalMultidiscipline Modeling in Materials and Structures
Volume19
Issue number6
DOIs
StatePublished - 13 Nov 2023

Keywords

  • Angular vibrations
  • Large airborne equipment
  • Passive isolation design
  • Two-stage vibration isolation system
  • Vibration response analysis

Fingerprint

Dive into the research topics of 'Vibration response analysis of a two-stage vibration isolation system for large airborne equipment'. Together they form a unique fingerprint.

Cite this