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Volume 15
Issue 24
10.3390/app152412901
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Design and Characteristic Analysis of a Tandem-Connected Quasi-Zero-Stiffness Vibration Isolator with Oblique Beam-Arch Beam-Obliqeu Beam Configuration Based on Nonlinear Deformation

by
Zhiwen Mao
1,
Ziyi Liu
2,
Yu Zhang
1,
Ke Xu
1,
Yiwen Feng
1,
Chi Cai
2,
Qibai Huang
1,
Xin Zhan
1,3,* and
Yizhe Huang
2,*
1
State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
2
Hubei Key Laboratory of Modern Manufacturing Quality Engineering, School of Mechanical Engineering, Hubei University of Technology, Wuhan 430068, China
3
Dongfeng Liuzhou Motor Co., Ltd., Liuzhou 545005, China
*
Authors to whom correspondence should be addressed.
Appl. Sci. 2025, 15(24), 12901; https://doi.org/10.3390/app152412901 (registering DOI)
Submission received: 17 November 2025 / Revised: 30 November 2025 / Accepted: 5 December 2025 / Published: 7 December 2025
(This article belongs to the Section Acoustics and Vibrations)
Versions Notes

Abstract

With the continuous advancement of the automotive industry, users’ demands for vehicle ride comfort are constantly increasing. Low-frequency vibrations, characterized by their strong penetration and difficulty in attenuation, significantly impact ride comfort and represent a key challenge in current NVH research. Quasi-zero stiffness (QZS) structures demonstrate exceptional performance in low-frequency vibration isolation, making them widely adopted in automotive and industrial systems. However, traditional QZS structures predominantly rely on the parallel connection of positive and negative stiffness elements, presenting drawbacks such as stringent stiffness matching requirements and limited design freedom. This paper proposes a tandem-connected Oblique-Arch-Oblique (OAO) QZS structure based on a nonlinear deformation mechanism. By introducing symmetric nonlinear deformation, the structure effectively expands the operational range of conventional QZS systems and overcomes stiffness matching challenges. Firstly, the mechanical characteristics and key geometric parameters of the OAO structure were analyzed using the energy method. Secondly, finite element simulations validated the influence of critical parameters and demonstrated the design flexibility of the OAO structure in terms of load-bearing capacity. Finally, vibration isolation experiments were conducted to evaluate its low-frequency isolation performance. The results confirm that the proposed OAO structure achieves both a wide operational range and excellent low-frequency vibration isolation, validating it as an innovative structural solution for low-frequency vibration mitigation.
Keywords: quasi-zero stiffness (QZS); stiffness matching; oblique-arch-oblique-tandem; low-frequency vibration suppression; load capacity adjustable quasi-zero stiffness (QZS); stiffness matching; oblique-arch-oblique-tandem; low-frequency vibration suppression; load capacity adjustable

Share and Cite

MDPI and ACS Style

Mao, Z.; Liu, Z.; Zhang, Y.; Xu, K.; Feng, Y.; Cai, C.; Huang, Q.; Zhan, X.; Huang, Y. Design and Characteristic Analysis of a Tandem-Connected Quasi-Zero-Stiffness Vibration Isolator with Oblique Beam-Arch Beam-Obliqeu Beam Configuration Based on Nonlinear Deformation. Appl. Sci. 2025, 15, 12901. https://doi.org/10.3390/app152412901

AMA Style

Mao Z, Liu Z, Zhang Y, Xu K, Feng Y, Cai C, Huang Q, Zhan X, Huang Y. Design and Characteristic Analysis of a Tandem-Connected Quasi-Zero-Stiffness Vibration Isolator with Oblique Beam-Arch Beam-Obliqeu Beam Configuration Based on Nonlinear Deformation. Applied Sciences. 2025; 15(24):12901. https://doi.org/10.3390/app152412901

Chicago/Turabian Style

Mao, Zhiwen, Ziyi Liu, Yu Zhang, Ke Xu, Yiwen Feng, Chi Cai, Qibai Huang, Xin Zhan, and Yizhe Huang. 2025. "Design and Characteristic Analysis of a Tandem-Connected Quasi-Zero-Stiffness Vibration Isolator with Oblique Beam-Arch Beam-Obliqeu Beam Configuration Based on Nonlinear Deformation" Applied Sciences 15, no. 24: 12901. https://doi.org/10.3390/app152412901

APA Style

Mao, Z., Liu, Z., Zhang, Y., Xu, K., Feng, Y., Cai, C., Huang, Q., Zhan, X., & Huang, Y. (2025). Design and Characteristic Analysis of a Tandem-Connected Quasi-Zero-Stiffness Vibration Isolator with Oblique Beam-Arch Beam-Obliqeu Beam Configuration Based on Nonlinear Deformation. Applied Sciences, 15(24), 12901. https://doi.org/10.3390/app152412901

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