Bionic paw-inspired structure for vibration isolation with novel nonlinear compensation mechanism

Yan, Ge; Qi, Wen-Hao; Shi, Junwei; Yan, Han; Zou, Hong‐Xiang; Zhao, Lingmin; Wu, Zhiyuan; Fang, Xiao-Yong; Li, Xiuyuan; Zhang, Wenming

doi:10.1016/j.jsv.2022.116799

Cited by 51 publications

(9 citation statements)

References 56 publications

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“…Its resonance frequency is low and can suppress vibrations above 4Hz. The vibration reduction structure is supported by magnet repulsion, has a low load-bearing capacity, and suffers from instability problems [13]. Jie Zhang [14,15]et al studied the principle of buffering and energy absorption of the ladybug Elytra structure, and found that the cavity elastic, coupled mortise and tenon structure of the ladybug Elytra structure has excellent vibration reduction performance.…”

Section: Introductionmentioning

confidence: 99%

Vibration reduction based on bionic elytra structure

Li,

Fang,

Chen

et al. 2024

Fourth International Conference on Mechanical Engineering, Intelligent Manufacturing, and Automation Technology (MEMAT 2023)

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Undesirable shock vibrations are widely distributed in the mechanical field. Shock damping through bionic structures is a more effective method for vibration suppression. The Elytra structure of the ladybug has the characteristics of buffering and vibration reduction, and it is an efficient structure that can realize bionic vibration reduction. Based on the analysis of the vibration absorption principle of the Elytra structure, this paper adopts the symmetric structure and frictional energy dissipation method to design an Elytra structure -like an initial circular beam damping structure. To explore the effect of different features on the vibration reduction performance, the bionic structure is studied by simulation analysis and experimental methods. In order to study the effect of the bionic structure on single and periodic vibrations, mechanical simulation analysis is performed using single impact and periodic continuous vibrations of dropping objects, and an experimental setup is built to collect the corresponding vibration signals, so as to analyze the performance of the vibration reduction structure. The results show that the designed bionic sheath-fin vibration reduction structure not only has a buffering and energy absorption effect on the instantaneous impact but also has a good suppression effect on the low-frequency continuous vibration.

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Section: Introductionmentioning

confidence: 99%

Vibration reduction based on bionic elytra structure

Li,

Fang,

Chen

et al. 2024

Fourth International Conference on Mechanical Engineering, Intelligent Manufacturing, and Automation Technology (MEMAT 2023)

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“…For example, inspired by animal leg/limb skeleton, Jing X-J et al proposed a bio-inspired antivibration exoskeleton, which is very effective for vibration suppression up to 70% or above and can significantly reduce the vibration transmitted from heavy-duty breakers to operator handles (Jing et al, 2019). Yan G et al, proposed a unique paw-inspired structure (PIS), inspired by the compensation effect of fat pad on toes in a paw of digitigrade, which can achieve low resonance frequency and wide effective vibration isolation frequency band (Yan et al, 2022). Ling P et al studied a cockroach-inspired structure (CIS) by mimicking the body topology of cockroaches for low-frequency vibration isolation, which can dramatically reduce the resonant frequency and peak transmissibility (Ling et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Modeling and characteristics study of double-diamond bionic vibration isolation system with inerter

Song

Zhang

et al. 2023

Journal of Vibration and Control

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An integrated and bionic passive vibration isolation system is proposed based on the double-diamond bionic structure and inerter to solve the problems of poor low-frequency vibration isolation performance, narrow vibration isolation frequency band, and big additional mass of current passive vibration isolation system. To analyze the low-frequency vibration isolation performance and the valuable frequency band, the nonlinear dynamic model of the system is established, then the system transmission characteristics and stability are studied. It is found that the system can reduce the amplitudes of resonant peaks, broaden the valuable frequency band, and the system stability is excellent. Seen from the performance analysis, the introduction of the inerter with smaller additional mass makes the system have better vibration isolation performance and wider effective vibration isolation frequency band. The proposed system provides a new solution for vibration control in practical engineering.

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“…Inspired by the bird's neck, Deng [25] designed a vibration isolator that can adapt to larger amplitude and lower frequency. Yan designed a QZS vibration isolation structure composed of nonlinear positive stiffness and nonlinear negative stiffness inspired by animal paws [26]. According to the relevant literature, it can be found that the dynamic equation of most bionic structures cannot be simplified to Duffing equation because of the asymmetry of stiffness.…”

Section: Introductionmentioning

confidence: 99%

Accurate nonlinear dynamic characteristics analysis of quasi-zero-stiffness vibration isolator via a modified incremental harmonic balance method

Meng

Hou

Lin

et al. 2023

Preprint

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Quasi-zero-stiffness (QZS) vibration isolator is widely used in low-frequency vibration isolation due to its high-static-low-dynamic-stiffness (HSLDS) characteristics. The complex nonlinear force of the QZS vibration isolator increases the difficulty of solving it while realizing the HSLDS characteristics. The typical analysis method is to use Taylor expansion to simplify the nonlinear force and make it approximate to polynomial form, which leads to inaccurate analysis results in the case of large excitation and small damping. Therefore, the modified incremental harmonic balance (IHB) method is used to directly analyze the dynamic characteristics of the QZS vibration isolator without simplification in this paper. The classical three-spring QZS vibration isolation model is used as the calculation example. The results are different from the previous approximate equation analysis results in three aspects: (1) There is no unbounded response of the system under displacement excitation; (2) Even harmonics and constant terms also exist in the response of the system and can lead to multiple solution intervals; (3) In the case of small damping and large excitation, both displacement excitation and force excitation have subharmonic resonance, reducing the vibration isolation performance of the system. In addition, the accuracy of the solution obtained by the IHB method is verified by the Runge-Kutta method. The accurate analysis method in this paper provides favorable theoretical support for the design and optimization of vibration isolators.

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Bionic paw-inspired structure for vibration isolation with novel nonlinear compensation mechanism

Cited by 51 publications

References 56 publications

Vibration reduction based on bionic elytra structure

Vibration reduction based on bionic elytra structure

Modeling and characteristics study of double-diamond bionic vibration isolation system with inerter

Accurate nonlinear dynamic characteristics analysis of quasi-zero-stiffness vibration isolator via a modified incremental harmonic balance method

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