Enhanced vibration suppression using diatomic acoustic metamaterial with negative stiffness mechanism

Wang, Kun; Yang, Jian; Yi, Xiaosu; Guo, Wenjie; Feng, Qingsong; Chronopoulos, Dimitrios

doi:10.1016/j.engstruct.2022.114939

Cited by 22 publications

(2 citation statements)

References 55 publications

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“…Zhang et al [23] obtained an ultrawide low-frequency bandgap in acoustic metamaterials through an optimized system topology method. By investigating the bandgap characteristics of acoustic metamaterials, Liu et al [24] demonstrated the superiority of the bandgaps generated by the proposed configuration, and realized ultra-low-frequency vibration control. Wang et al [25] improved a bifocal piezoelectric metamaterial beam, and the co-operative effect of vibration isolation and energy harvesting was verified through simulations.…”

Section: Introductionmentioning

confidence: 99%

“…Das et al [36] studied the bandgap characteristics of cells with different shapes through a combination of experiments and simulations and confirmed that cell shape can affect the bandgap. Liu et al [24] presented an I-shaped radial elastic metamaterial and found that the material can generate ultra-low-frequency wide bandgaps under quasi-static conditions. Moreover, Bae [37], Yang [38], Bera [39], and Muhammad [40] et al have investigated the influence of geometric and material parameters on bandgap properties.…”

Section: Introductionmentioning

confidence: 99%

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Co-Design of Mechanical and Vibration Properties of a Star Polygon-Coupled Honeycomb Metamaterial

Yong,

Li,

et al. 2024

Applied Sciences

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Based on the concept of component assembly, a novel star polygon-coupled honeycomb metamaterial, which achieves a collaborative improvement in load-bearing capacity and vibration suppression performance, is proposed based on a common polygonal structure. The compression simulation and experiment results show that the load-bearing capacity of the proposed metamaterial is three times more than that of the initial metamaterial. Additionally, metal pins are attached and particle damping is applied to the metamaterial to regulate its bandgap properties; the influence of configuration parameters, including the size, number, position, and material of the metal pins, on bandgaps is also investigated. The results show that the bandgap of the proposed metamaterial can be conveniently and effectively regulated by adjusting the parameters and can effectively suppress vibrations in the corresponding frequency band. Particle damping can be used to continuously adjust the frequency of the bandgap and further enhance the vibration suppression capacity of the metamaterial in other frequency bands. This paper provides a reference for the design and optimization of metamaterials.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Co-Design of Mechanical and Vibration Properties of a Star Polygon-Coupled Honeycomb Metamaterial

Yong,

Li,

et al. 2024

Applied Sciences

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Feasibility and design of nonlinear negative‐stiffness isolating approach for solid‐rocket‐motor‐type structures

Wang,

Gao,

Wang

et al. 2024

Engineering Reports

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Solid rocket motor (SRM)‐type structures are popular due to their reliability, considering that service safety during transportation can be improved by applying advanced vibration control technologies. In this study, a negative‐stiffness‐enhanced isolation system (NSeIS) with appropriately designed linear and nonlinear properties was developed to vertically isolate SRMs subjected to transportation‐ and deployment‐induced vibrations. The NSeIS design, based on the combination of a negative‐stiffness device and vertical isolator, involved a clear mechanical model, physical realization, and mechanical properties. Parametric analyses were performed on a typical SRM controlled with a linear and nonlinear NSeIS and a conventional isolation system. Subsequently, a feasible parameter domain and design recommendations were deduced. Finally, design cases for the SRM for time‐domain verification were considered. The results revealed that the NSeIS offers a flexible and enhanced isolating effect through the parallel arrangement of the negative‐stiffness device and conventional isolators. For the motor‐type structure, NSeIS ensures marked enhancements in performance and multiple levels of mitigation effects. Thus, compared with a conventional isolator with the same damping, NSeIS achieves a more substantial negative‐stiffness effect for a large displacement response range owing to its nonlinear property. NSeIS can isolate more vibration‐induced energy, thereby suppressing the interface Mises stress, which is essential for SRM‐type structures.

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A low-frequency pure metal metamaterial absorber with continuously tunable stiffness

Wang,

Rui,

Yang

et al. 2024

Appl. Math. Mech.-Engl. Ed.

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To address the incompatibility between high environmental adaptability and deep subwavelength characteristics in conventional local resonance metamaterials, and overcome the deficiencies in the stability of existing active control techniques for band gaps, this paper proposes a design method of pure metal vibration damping metamaterial with continuously tunable stiffness for wideband elastic wave absorption. We design a dual-helix narrow-slit pure metal metamaterial unit, which possesses the triple advantage of high spatial compactness, low stiffness characteristics, and high structural stability, enabling the opening of elastic flexural band gaps in the low-frequency range. Similar to the principle of a sliding rheostat, the introduction of continuously sliding plug-ins into the helical slits enables the continuous variation of the stiffness of the metamaterial unit, achieving a continuously tunable band gap effect. This successfully extends the effective band gap by more than ten times. The experimental results indicate that this metamaterial unit can be used as an additional vibration absorber to absorb the low-frequency vibration energy effectively. Furthermore, it advances the metamaterial absorbers from a purely passive narrowband design to a wideband tunable one. The pure metal double-helix metamaterials retain the subwavelength properties of metamaterials and are suitable for deployment in harsh environments. Simultaneously, by adjusting its stiffness, it substantially broadens the effective band gap range, presenting promising potential applications in various mechanical equipment operating under adverse conditions.

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Enhanced vibration suppression using diatomic acoustic metamaterial with negative stiffness mechanism

Cited by 22 publications

References 55 publications

Co-Design of Mechanical and Vibration Properties of a Star Polygon-Coupled Honeycomb Metamaterial

Co-Design of Mechanical and Vibration Properties of a Star Polygon-Coupled Honeycomb Metamaterial

Feasibility and design of nonlinear negative‐stiffness isolating approach for solid‐rocket‐motor‐type structures

A low-frequency pure metal metamaterial absorber with continuously tunable stiffness

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