Research on Damping and Vibration Absorption Performance of Air Spring Dynamic Vibration Absorber

Yin, Lihang; Xü, Wei; Hu, Zechao; He, Ming; Li, Chuang

doi:10.1007/s42417-023-01083-4

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…From this, we can infer the damping coefficient based on the amplitude. Yin et al [46] analyzed the influence of air pressure on air damping, which means that the air pressure can be inferred by the damping coefficient of the air. Wang et al [47] further analyzes the relationship between quality factor and air pressure.…”

Section: Sensitivity Analysis 41 Acceleration Measurement Based On Sn...mentioning

confidence: 99%

Acceleration sensing based on the bifurcation dynamics of parametrically excited mode-localized resonators

Zhao,

Tang,

Kacem

et al. 2023

Phys. Scr.

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A parametrically excited mode-localized accelerometer is designed using the bifurcation phenomenon to improve the robustness of the fluctuation of the driving voltage and damping while maintaining high sensitivity. A dynamic multi-physics model was established while considering both mechanical and electrostatic nonlinearities. The equation was solved by method of multiple scales and verified by harmonic balanced method coupled with the asymptotic numerical method. Two types of bifurcation exist in amplitude frequency response, namely Saddle-Node bifurcation and Supercritical Hopf bifurcation. By introducing Saddle-Node bifurcation, the response amplitude and measurement range can be improved by 100% and 1000%, respectively, while the sensitivity of the amplitude ratio is about 2 orders of magnitude higher than that based on the frequency ratio. At the Supercritical Hopf bifurcation point, a small acceleration will change the topological structure from Supercritical Hopf to Saddle-Node bifurcation. The variation in the amplitude ratio of the Supercritical Hopf point with acceleration is similar to the sign function, which leads to an extremely high sensitivity of 10000%/g in a dynamic range of ±0.001 g. Moreover, the Supercritical Hopf bifurcation point is not affected by the amplitude of the excitation voltage and damping coefficient, which provides a new method for improving the sensing robustness. Ethical Compliance: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Conflict of Interest declaration: The authors declare that they have NO affiliations with or involvement in any organization or entity with any financial interest in the subject matter or materials discussed in this manuscript.

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Section: Sensitivity Analysis 41 Acceleration Measurement Based On Sn...mentioning

confidence: 99%

Acceleration sensing based on the bifurcation dynamics of parametrically excited mode-localized resonators

Zhao,

Tang,

Kacem

et al. 2023

Phys. Scr.

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Design of tunable pneumatic metamaterials for low-frequency vibration control

Zhang,

Xu,

Chen

et al. 2024

AIP Advances

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For addressing the limitations of traditional elastic metamaterials in opening wide bandgaps below 100 Hz, a tunable pneumatic metamaterial plate with airbag local resonators is proposed. Utilizing the characteristics of airbags, such as small volume, large load-bearing capacity, easy stiffness adjustment, and the ability to provide multi-directional restoring forces, a structured low-stiffness local resonator with a certain load-bearing capacity is designed. By varying the gauge pressure of the airbag, the bandgap can be moved toward lower frequencies, thereby achieving a broad low-frequency vibration suppression capability for various wave propagations. The low-frequency vibration bandgap characteristics of the tunable pneumatic metamaterial are analyzed and verified by applying the finite element method. The results illustrate that this tunable pneumatic metamaterial can attenuate bending waves in the range of 22–121 Hz by adjusting the air pressure. Moreover, increasing the gauge pressure will not only shift the complete bandgap toward lower frequencies but also significantly expand the bandwidth of the complete bandgap. For instance, increasing the gauge pressure from 0 to 50 kPa reduces the opening frequency of the complete bandgap from 36 to 22 Hz while enhancing the relative bandwidth from 0.52 to 0.85. Extending from this, a parametric study was conducted to examine the impact of the structural parameters of airbag-type resonant units on bandgap evolution, summarizing the general principles for achieving wide low-frequency bandgaps. Finally, the bandgap characteristics of the tunable pneumatic metamaterial are confirmed through the frequency response function of a finite periodic structure.

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Research on Damping and Vibration Absorption Performance of Air Spring Dynamic Vibration Absorber

Cited by 2 publications

References 8 publications

Acceleration sensing based on the bifurcation dynamics of parametrically excited mode-localized resonators

Acceleration sensing based on the bifurcation dynamics of parametrically excited mode-localized resonators

Design of tunable pneumatic metamaterials for low-frequency vibration control

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