首页|A vibration isolator with a controllable quasi-zero stiffness region based on nonlinear force design

A vibration isolator with a controllable quasi-zero stiffness region based on nonlinear force design

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To achieve stability optimization in low-frequency vibration control for precision instruments,this paper presents a quasi-zero stiffness(QZS)vibration isolator with adjustable nonlinear stiffness.Additionally,the stress-magnetism coupling model is established through meticulous theoretical derivation.The controllable QZS interval is constructed via parameter design and magnetic control,effectively segregating the high static stiffness bearing section from the QZS vibration isolation section.Furthermore,a displacement control scheme utilizing a magnetic force is proposed to regulate entry into the QZS working range for the vibration isolation platform.Experimental results demon-strate that the operation within this QZS region reduces the peak-to-peak acceleration signal by approximately 66.7％compared with the operation outside this region,thereby significantly improving the low frequency performance of the QZS vibration isolator.

low frequencynonlinearvibration isolatorquasi-zero stiffness(QZS)

Xinyu LIAN、Bing LIU、Huaxia DENG、Xinglong GONG

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CAS Key Laboratory of Mechanical Behavior and Design of Materials,Department of Modern Mechanics,University of Science and Technology of China,Hefei 230027,China

State Key Laboratory of Nonlinear Mechanics,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China

State Key Laboratory of Fire Science,University of Science and Technology of China,Hefei 230026,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaFundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central UniversitiesFellowship of China Postdoctoral Science FoundationFellowship of China Postdoctoral Science FoundationUniversity Synergy Innovation Program of Anhui ProvinceCAS Talent Introduction Program

Nos.123721875232100312302250Nos.KY2090000094WK2480000010Nos.2024M7531032023M733388No.GXXT-2023-024No.KJ2090007006

2024

10.1007/s10483-024-3137-8

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)