Bending vibration control of a MR fluid embedded smart beam exposed by the conjunction of wind-induced galloping effects

Bolat, Fevzi Çakmak; Sivrioğlu, Selim

doi:10.1088/1361-665x/abb355

Cited by 8 publications

(5 citation statements)

References 21 publications

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“…For example, Sivrioglu [20] conducted research on a small turbine blade with winglet modifications, designated as SH3055, and utilized piezoelectric actuators to suppress vibration modes. And Bolat and Sivrioglu [21] investigated the control of bending vibrations in a smart beam embedded with magnetorheological fluid to mitigate wind-induced galloping effects using active control methods. Currently, there are no relevant reports on the relationship between the dispensing characteristics of needletype piezoelectric jetting dispenser and their driving waveform parameters.…”

Section: Introductionmentioning

confidence: 99%

Optimizing dispensing performance of needle-type piezoelectric jet dispensers: a novel drive waveform approach

Cao,

Gong,

Tao

et al. 2024

Smart Mater. Struct.

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The dispensing performance of needle-type piezoelectric jet dispenser constitutes a crucial factor that ensures the quality of additive manufacturing processes. In this paper, a novel approach is proposed to enhance the dispensing performance of needle-type piezoelectric jetting dispensers by introducing a more adaptable driving waveform based on Bézier curves. Initially, the approach considers the electromechanical coupling effect of the needle-type piezoelectric dispenser and constructs a high-precision fluid-solid coupling model of the dispensing process. Subsequently, a multi-physics field joint simulation platform combining Matlab and Fluent is established to systematically analyze control strategies in real service conditions. Next, a new driving waveform based on Bézier curves is introduced, and the control parameters are optimized using a genetic algorithm to address issues such as air bubbles in the droplets and instability of the dispensing process. The optimized waveform based on the Bézier curve reduces the volume of air suction during the dispensing process by over 20% compared to the traditional waveform and eliminates the uncontrolled vibration state of the needle in the fluid, ensuring the stability of the entire fluid refill process. Finally, the optimized control strategy is verified through experiments and compared with traditional methods. The experiment demonstrates its advantages in addressing issues with no air bubbles in the droplets and consistency of the droplets. This study provides valuable insights into optimizing the dispensing performance of needle-type piezoelectric jetting dispensers regarding control strategy.

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Section: Introductionmentioning

confidence: 99%

Optimizing dispensing performance of needle-type piezoelectric jet dispensers: a novel drive waveform approach

Cao,

Gong,

Tao

et al. 2024

Smart Mater. Struct.

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“…The CFD model results were further complemented by an experimental study of the jet morphometry, where the turbulence was analyzed by studying the sensitivity of the velocity and geometrical variation in the jet [21]. To comprehensively characterize the flow-induced vibrations generated by the pneumatic air jets, a device that enables the characterization of the vibrational consequences of the air impact is crucial, for example, flow-induced continuousvibration sensing by implementing control performance of a multilayer beam structures containing pivot controls by means of an electromagnetic field [22].…”

Section: Introductionmentioning

confidence: 99%

Optimizing Harvesting Efficiency: Development and Assessment of a Pneumatic Air Jet Excitation Nozzle for Delicate Biostructures in Food Processing

Cardona,

Tinoco,

Perdomo-Hurtado

et al. 2024

Foods

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This study presents a new pneumatic air jet excitation nozzle, specifically designed for food processing applications. The device, which uses compressed air equipment and a precision solenoid valve, controls air discharge through a parametric air jet nozzle. Tests showed that the device could achieve shooting frequencies in the 40–45 Hz range, with operational pressures between 5 and 7 bar. A sensor system was used to measure the force generated by the device at different frequencies and pressures. Using the Design of Experiments (DOE) methodology, we identified optimal cavity designs for 5 and 6 bar pressures. These designs outperformed others in generating uniform force and maintaining consistent vibration voltage behavior. This highlights the efficacy of our approach in enhancing device performance under different conditions. The device’s practical application in food processing was demonstrated, particularly in delicate tasks such as the selective harvesting of sensitive crops like coffee fruits. The precise vibrations generated by the device could potentially enhance harvesting efficiency while significantly reducing mechanical damage to plants. The results position the device as a compelling proof of concept, offering an alternative method for exciting biostructures in food processing. This device opens up new possibilities in agricultural and biological fields, providing a non-intrusive and practical approach to manipulating and interacting with delicate, contactless structures, with a specific focus on improving food processing efficiency and quality.

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“…The author cleverly devised a DVA with double natural frequencies, where the MRE could be sheared both in the torsional direction and in the translational direction to broaden the range [24]. Moreover, Bolat and Sivrioglu [25] proposed a MR fluid-based smart beam structure to suppress wind-induced steady-state vibrations. A small amount of MR fluid and a proper control method exhibited effective vibration control performance.…”

Section: Introductionmentioning

confidence: 99%

A magnetorheological vibration absorber with bidirectional tunability for pipelines

Xie,

Fu,

Zhu

et al. 2023

Smart Mater. Struct.

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Magnetorheological elastomer (MRE) had been employed as a tunable stiffness element in dynamic vibration absorber (DVA) due to its remarkable magnetic tunability. However, the natural frequency of MRE-based DVA could only be tuned towards high frequency under magnetic fields, which failed to solve or even exacerbate the low-frequency pipeline vibration. To tackle this issue, an innovative DVA (H-DVA) with bi-directional magnetic tunability was proposed in this paper. The hard magnetic MRE filled by NdFeB particles was selected as the core tunable stiffness element in H-DVA. Besides, the discretization distribution design scheme for the mass oscillators was adopted to improve the flexibility of H-DVA. Then, the magnetic field simulation and resonance frequency shifting test of H-DVA under different magnetic fields were completed to validate the bi-directional magnetic tunability. Lastly, the vibration absorption effect was verified in a self-established experimental pipeline system. The experiment results demonstrated that the resonance frequency of the proposed H-DVA exhibited a maximum frequency shift of approximately -2.7Hz under reversed magnetic field. Compared to H-DVA working in zero field state, the acceleration magnitude of pipeline vibration was furtherly reduced by 8.8% when applying -1.5A to H-DVA under 55Hz excitation. Similarly, the acceleration magnitude was furtherly reduced by 22.2% when applying 2A to H-DVA under 85Hz excitation. Thus, these findings confirmed that the H-DVA proposed in this paper not only achieved the bi-directional magnetic tunability, but also improved the vibration absorption effect for pipeline vibration.

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Bending vibration control of a MR fluid embedded smart beam exposed by the conjunction of wind-induced galloping effects

Cited by 8 publications

References 21 publications

Optimizing dispensing performance of needle-type piezoelectric jet dispensers: a novel drive waveform approach

Optimizing dispensing performance of needle-type piezoelectric jet dispensers: a novel drive waveform approach

Optimizing Harvesting Efficiency: Development and Assessment of a Pneumatic Air Jet Excitation Nozzle for Delicate Biostructures in Food Processing

A magnetorheological vibration absorber with bidirectional tunability for pipelines

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