Theoretical and experimental investigations on an X-shaped vibration isolator with active controlled variable stiffness

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外文摘要：A novel X-shaped variable stiffness vibration isolator(X-VSVI)is proposed.The Runge-Kutta method,harmonic balance method,and wavelet transform spectra are introduced to evaluate the performance of the X-VSVI under various excitations.The layer number,the installation angle of the X-shaped structure,the stiffness,and the active control parameters are systematically analyzed.In addition,a prototype of the X-VSVI is manufactured,and vibration tests are carried out.The results show that the proposed X-VSVI has a superior adaptability to that of a traditional X-shaped mechanism,and shows excellent vibration isolation performance in response to different amplitudes and forms of excitations.Moreover,the vibration isolation efficiency of the device can be improved by appropriate adjustment of parameters.

外文关键词：

bionic vibration isolationX-shaped structurevariable stiffness structurenonlinear dynamicsprototype experiment

作者：

Zeyu CHAI、J.T.HAN、Xuyuan SONG、Jian ZANG、Yewei ZHANG、Zhen ZHANG

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作者单位：

College of Aerospace Engineering,Shenyang Aerospace University,Shenyang 110136,China

Jacobs School of Engineering,University of California San Diego,San Diego CA92122,U.S.A.

Key Laboratory of Vibration and Control of Aero-Propulsion System,Ministry of Education,Northeastern University,Shenyang 110819,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of China

项目编号：

Nos.1202221312002329U23A20661227224012002217

出版年：

2024

DOI：

10.1007/s10483-024-3135-6

应用数学和力学(英文版)

上海大学

应用数学和力学(英文版)

影响因子：0.294

ISSN：0253-4827

年,卷(期)：2024.45(8)