ORIGINAL RESEARCH article
Front. Mech. Eng.
Sec. Engine and Automotive Engineering
This article is part of the Research TopicDynamics and Control of New Energy VehiclesView all 8 articles
Dynamic characteristics of negative stiffness structure with high static and low dynamic stiffness
Provisionally accepted
- Nanjing Tech University, Nanjing, China
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Negative stiffness (NS) structures have obvious advantages in attenuating low-frequency vibration. Although most existing NS structures exhibit good damping effects, their stability is poor, limiting their application in complex mechanical systems. To improve their damping and stability, a negative stiffness structure composed of rubber spring and elastic beam (NSS-RB) is proposed. Its elastic properties are studied via numerical modeling. Numerical and experimental results show NSS-RB has high static and low dynamic stiffness, achieving good damping and stability. Applied to a power battery package damping system, NSS-RB outperforms the rubber spring (RS) system in vibration reduction: the low-frequency vibration attenuation rate exceeds 90%, with good ride comfort and no instability.
Keywords: negative stiffness, Elastic beam, damping system, dynamics, Vibration
Received: 20 Oct 2025; Accepted: 10 Nov 2025.
Copyright: © 2025 Wang, Zhang and Su. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Bao Zhang, zhangbao1350@126.com
Xiaoping Su, suxiaoping@njtech.edu.cn
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