Design and Parameter Optimization of Quasi-Zero-Stiffness Structures Based on Cosine-Curve Compliant Beams.

Zhuo Sun, Jinpeng Hu, Deng Li, Long Huang

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Article in Micromachines, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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4 authors.

Zhuo SunCollege of Mechanical and Vehicle Engineering, Changsha University of Science and Technology, Changsha 410114, China.

Jinpeng HuHunan Provincial Key Laboratory of Intelligent Manufacturing Technology for High-Performance Mechanical Equipment, Changsha University of Science and Technology, Changsha 410114, China.

Deng LiCollege of Mechanical and Energy Engineering, Beijing University of Technology, Beijing 100124, China.

Long HuangCollege of Mechanical and Vehicle Engineering, Changsha University of Science and Technology, Changsha 410114, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Quasi-zero-stiffness (QZS) structures can provide a near constant force output in a certain range of displacement without force sensors and controllers. Therefore, they can be used in overload protection, vibration isolation, and biomedical application. In this paper, we propose a novel QZS structure based on cosine-curve compliant beams, which have a large QZS stoke and compact layout. The proposed QZS structure is composed of two half-period cosine-curve compliant beams with negative stiffness and two one-period cosine-curve compliant beams with positive stiffness. Then, we conducted the modeling of the force-displacement relationship of the compliant beams and analyzed the influence of the parameters on the mechanical performance. Based on the influence analysis, we propose the optimization processes to achieve QZS and obtain a QZS structure with the required force-displacement behavior. Finally, the mechanical performance of the QZS structure is verified through compression experiments on the prototype.

Indexed as

compliant structurecosine-curve beamparameter optimizationquasi-zero-stiffness

Identifiers

PMID40872468

DOI10.3390/mi16080961

PMCPMC12388123

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LicenceCC BY

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.