Effect of porosity on active vibration control of smart structure using porous functionally graded piezoelectric material

Sharma, Anshul

doi:10.1016/j.compstruct.2021.114815

Cited by 25 publications

(1 citation statement)

References 39 publications

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“…The methods to achieve QZS characteristic has been a prominent research area among scholars. Most of them consist of positive stiffness unit in parallel with negative stiffness unit, such as: mechanical springs [4,5], pre-flexed beams [6,7], electromagnetic springs [8], bionic structures [9], geometric nonlinearities [10], composite structures [11], and the other types. Mechanical springs mechanism was the first proposed QZS structure.…”

Section: Introductionmentioning

confidence: 99%

Design of a Dual-arched Structure for Low-frequency Vibration Isolation with Enhanced Quasi-Zero-Stiffness Characteristics

Feng,

Guo,

Feng

et al. 2023

Preprint

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This paper proposes a dual-arched nonlinear anti-vibration structure (D-ANAVS) and systematically investigates its nonlinear characteristics to assess its vibration suppression performance. The D-ANAVS consists of a dual arrangement of arch-shaped arcs, which demonstrates a distinctive characteristic characterized by the combination of linear and geometric nonlinear stiffness during the compression. This distinctive attribute distinguishes the D-ANAVS from other structures, endowing it with an extended quasi-zero stiffness range in displacement and greatly enhancing its performance in effectively suppressing vibrations. A lumped parameter model of the D-ANAVS is introduced to comprehensively analyze its static and dynamic behaviors. The investigation specifically focuses on examining the influence of various structural parameters on the observed nonlinearities. A prototype is meticulously designed and fabricated using thermoplastic polyurethane (TPU) material. Experimental tests are conducted to assess its efficacy in suppressing vibrations. The obtained results unequivocally demonstrate the remarkable capability of the D-ANAVS to significantly attenuate vibrations within the low-frequency range. The results obtained from this study offer compelling empirical evidence that substantiates the effectiveness of the D-ANAVS as a robust vibration suppression solution applicable to a wide range of engineering applications.

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Section: Introductionmentioning

confidence: 99%

Design of a Dual-arched Structure for Low-frequency Vibration Isolation with Enhanced Quasi-Zero-Stiffness Characteristics

Feng,

Guo,

Feng

et al. 2023

Preprint

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Aeroelastic-electric flutter characteristics of functionally graded piezoelectric material plates in supersonic airflow

Su,

Wei,

Jiang

et al. 2024

Arch Appl Mech

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Effect of the porous structure on the hygrothermal vibration analysis of functional graded nanoplates using nonlocal high-order continuum plate model

Yıldırım,

Esen

2024

Acta Mech

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This study delves into the thermomechanical vibration behavior of functionally graded porous nanoplates under extreme thermal temperature and humidity conditions. The equation of motion of the nanoplate was derived using advanced theories in elasticity and deformation. The nanoplate consists of metal (SUS304) on the bottom surface and ceramic (Ni3S4) on the top surface, with the material distribution changing according to the power law across the plate thickness. The nanoplate was modeled with uniform and symmetric distributions of porosity reaching as high as 60%. Upon incorporating the thermal and moisture loads from the humid surroundings into the equations of motion derived from Hamilton's principle, the equations were solved using Navier's method and simplified to the eigenvalue equation. Analyzed within a broad framework are the thermomechanical vibration behavior of the nanoplate, temperature impact, humidity influence, porosity and its distribution, material grading parameter effects, and nonlocal integral elasticity effects. Observations indicate that variations in thermal temperature, humidity, and nonlocal parameters can lower the thermomechanical vibration frequency of the nanoplate, whereas porosity has the opposite effect. The effects mentioned are influenced by factors, such as the porosity ratio, porosity distribution, material ratios, and the size of the nonlocal parameter in the plate. The primary objective of this work is to uncover the nonlinear frequency response of nanoplates with high porosity in conditions characterized by high temperature and humidity.

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Effect of porosity on active vibration control of smart structure using porous functionally graded piezoelectric material

Cited by 25 publications

References 39 publications

Design of a Dual-arched Structure for Low-frequency Vibration Isolation with Enhanced Quasi-Zero-Stiffness Characteristics

Design of a Dual-arched Structure for Low-frequency Vibration Isolation with Enhanced Quasi-Zero-Stiffness Characteristics

Aeroelastic-electric flutter characteristics of functionally graded piezoelectric material plates in supersonic airflow

Effect of the porous structure on the hygrothermal vibration analysis of functional graded nanoplates using nonlocal high-order continuum plate model

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