https://doi.org/10.1140/epjs/s11734-025-01757-y
Regular Article
Integrated permanent-magnet-based quasi-zero stiffness low-frequency vibration isolator with nonlinear boundary constraints
1
College of Mechanical Engineering, Zhejiang University of Technology, 310023, Hangzhou, China
2
Hangzhou Goldfish Electrical Appliances Group Company Limited, 310023, Hangzhou, China
a
zhujun@zjut.edu.cn
b
55796666@qq.com
c
hpwu@zjut.edu.cn
Received:
26
January
2025
Accepted:
16
June
2025
Published online:
5
July
2025
Quasi-zero stiffness (QZS) isolators are characterized by high static stiffness and low dynamic stiffness, making them particularly effective in suppressing low-frequency vibration. To address the challenges of implementation complexity and the bulky nature of existing QZS isolators, this paper presents a novel QZS isolator based on the rectangular permanent magnets. The core structure of this isolator is entirely composed of permanent magnets, eliminating the need for traditional positive and negative stiffness units. This design not only simplifies the structure but also avoids the cumbersome parameter calculations and design challenges typically associated with stiffness matching, thus overcoming the limitations of conventional QZS designs. Moreover, a pair of cylindrical permanent magnets is integrated at the base of the structure as boundary constraints, further ensuring stability during operation. The superior QZS characteristics and excellent low-frequency vibration isolation performance of the proposed structure are validated through static compression experiments and dynamic vibration tests.
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© The Author(s), under exclusive licence to EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
