Origami-inspired isolators with quasi-zero stiffness for coupled axial-torsional vibration

Hesheng Han; Lihua Tang; Jianing WuShupeng SunPeilun YinDengqing Cao

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Origami-inspired isolators with quasi-zero stiffness for coupled axial-torsional vibration

机译：Origami-inspired isolators with quasi-zero stiffness for coupled axial-torsional vibration

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摘要

Vibration isolators with quasi-zero stiffness (QZS) property is an ideal solution for suppressing undesirable vibrations in engineering systems. Previous QZS isolators were mainly designed based on single-degree-of-freedom QZS structures without the capability for multi-directional vibration isolation. In this work, a Kresling-origami-inspired isolator (KOI) with QZS property in axial, torsional and coupled vibration is proposed. The KOI consists of two symmetric Kresling origami elements (KOEs), while a KOE is assembled by a base and an axial spring in parallel. Based on the static analysis, the bi-stability of bases is designed to provide negative stiffness. The QZS property of KOE is achieved by utilizing the special point Case-Q, which provides a novel strategy to design such an isolator. Such QZS property is only available for the KOE under axial or torsional excitation, while the KOI is further extended for isolating coupled excitations. The dynamic responses of KOI are calculated by solving its governing equations. Comparison between the theory results and those simulated in ADAMS shows good agreement. The transmissibility of the proposed isolator under axial and torsional vibration excitations is demonstrated to be able to achieve efficient vibration isolation performance, even full frequency range of vibration isolation for relatively weak excitations due to its nonlinearity. The developed theoretical framework and findings will provide a new way to design effective QZS isolators for multi-directional vibrations.

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来源
《Aerospace science and technology》 |2023年第9期|108438.1-108438.12|共12页
作者
Hesheng Han; Lihua Tang; Jianing WuShupeng SunPeilun YinDengqing Cao;
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作者单位

Department of Mechanical and Mechatronics Engineering, The University of Auckland, Auckland 1010, New Zealand;

School of Advanced Manufacturing, Sun Yat-sen University, Shenzhen 518107, China;

Department of Engineering Mechanics, Shandong University, Jinan 250061, ChinaSchool of Astronautics, Harbin Institute of Technology, Harbin 150001, China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类航空;
关键词
Origami; Vibration isolation; Coupled axial-torsional vibration; Quasi-zero stiffness; Bifurcation;

Origami-inspired isolators with quasi-zero stiffness for coupled axial-torsional vibration

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