Dynamic characteristics and vibration isolation performance of an integrated kangaroo bio-inspired vibration suppression structure

IF 3.8 2区工程技术 Q1 ENGINEERING, MECHANICAL

Acta Mechanica Sinica Pub Date : 2025-03-20 DOI:10.1007/s10409-025-24576-x

Shihua Zhou (, ), Zichun Zhou (, ), Xinhai Yu (, ), Chenhui Zhou (, ), Pengyang Wang (, ), Zhaohui Ren (, )

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引用次数: 0

Abstract

Inspired that kangaroo can buffer the impact and absorb vibration from the ground and keep the whole-body stable, an integrated kangaroo bio-inspired vibration suppression (IKBVS) structure considering vibration isolation-absorption simultaneously is proposed for low/wide band frequency vibration control. Based on skeleton mass, articulation friction, and the synergistic action among skeleton, articulation, and muscle/tendon, a vibration suppression model with more biological basic characteristics is derived. The validity of model and method is confirmed, and the static and dynamic analysis of the IKBVS system is carried out to investigate the vibration suppression performance. The quasi-zero stiffness region can be achieved with a smaller initial installation angle, medium rod length, smaller foot stiffness, and slightly lighter isolated mass in a wide displacement interval. The coupling mechanism of vibration isolation-absorption is revealed by parameter analysis. The results indicate that the IKBVS structure has favorite dynamic properties due to adjustable nonlinearity, namely, lower and adjustable resonance and anti-resonance frequency/peak and different levels of vibration suppression effect in high-frequency range are achieved readily. This research provides new insight into application of bio-inspired vibration suppression structures in various engineering systems for better vibration control.

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一体化袋鼠仿生减振结构的动力特性及隔振性能

启发袋鼠缓冲冲击和吸收来自地面的振动，保持全身稳定，提出了一种同时考虑隔振和吸振的一体化袋鼠仿生减振结构，用于低/宽带频率振动控制。基于骨骼质量、关节摩擦以及骨骼、关节和肌肉/肌腱之间的协同作用，推导了一个更具有生物基本特征的振动抑制模型。验证了模型和方法的有效性，并对IKBVS系统进行了静、动态分析，研究了系统的减振性能。在较宽的位移区间内，采用较小的初始安装角、中等的杆长、较小的杆脚刚度和稍轻的隔离质量即可实现准零刚度区域。通过参数分析，揭示了隔振-吸振耦合机理。结果表明，由于非线性可调，IKBVS结构具有良好的动态特性，即共振和抗共振频率/峰值较低且可调，在高频范围内容易实现不同程度的抑振效果。该研究为仿生减振结构在各种工程系统中的应用提供了新的思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Acta Mechanica Sinica 物理-工程：机械

CiteScore

5.60

自引率

20.00%

发文量

1807

审稿时长

4 months

期刊介绍： Acta Mechanica Sinica, sponsored by the Chinese Society of Theoretical and Applied Mechanics, promotes scientific exchanges and collaboration among Chinese scientists in China and abroad. It features high quality, original papers in all aspects of mechanics and mechanical sciences. Not only does the journal explore the classical subdivisions of theoretical and applied mechanics such as solid and fluid mechanics, it also explores recently emerging areas such as biomechanics and nanomechanics. In addition, the journal investigates analytical, computational, and experimental progresses in all areas of mechanics. Lastly, it encourages research in interdisciplinary subjects, serving as a bridge between mechanics and other branches of engineering and the sciences. In addition to research papers, Acta Mechanica Sinica publishes reviews, notes, experimental techniques, scientific events, and other special topics of interest. Related subjects » Classical Continuum Physics - Computational Intelligence and Complexity - Mechanics