Transactions of Nanjing University of Aeronautics & Astronautics
Compact Zigzag Vibration Isolator Based on Additive Manufacturing
- Article
- Figures
- Metrics
- Preview PDF
- Reference
- Related
- Cited by
- Materials
Abstract:
Devices on aircraft are subjected to complex environmental excitations that pose risks to their operational safety. Passive vibration isolation techniques are extensively employed due to their advantage of not requiring additional energy sources. This paper introduces a novel metallic vibration isolator based on zigzag structures. The proposed isolator features a compact design and can be manufactured using additive manufacturing techniques， allowing for the integration of structural and functional elements. Firstly， the vibration response of the single-degree-of-freedom （SDOF） system is analyzed. To achieve effective vibration reduction， it is crucial for the isolator's stiffness to be sufficiently low. Secondly， to obtain a structure with high compliance， the traversal algorithm and the finite element method（FEM） are applied. The results confirm that the zigzag structure is a reliable high-compliance configuration. Thirdly， the parametric geometric model of the zigzag structure is developed and its stiffness is calculated. Quasi-static compression experiments validate the accuracy of the calculations. Finally， a specific engineering example is considered， where a zigzag vibration isolator is designed and fabricated. Vibration experiments demonstrate that the zigzag isolator effectively reduces both the stiffness and the fundamental frequency of the vibration system， achieving a vibration isolation efficiency exceeding 60%.
Keywords:
Project Supported:
This work was supported by the National Key Research and Development Program of China （Nos.2023YFB4603900，2023YFB4603901） and the National Natural Science Foundation of China （No.52275255）.
Clc Number:
TH122
Articles
Mobile website
