Dynamic Performance Analysis and Design for a Fluidlastic Isolator

Cheng, Qu; Jing-hui, Deng; Feng, Qian; Feng, Zhizhuang; Zhu, Yan

doi:10.1145/3351180.3351194

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…The fluid-elastic isolator is an effective helicopter vibration reduction method, and researchers have conducted massive research on it [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Displacement Transfer Characteristic and Parameter Optimization Design of Fluid-Elastic Isolator

Li¹,

Cheng²,

Qian³

et al. 2022

Advances in Transdisciplinary Engineering

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The main parameters influencing the displacement transfer rate of the fluid-elastic isolator are studied and optimized. Firstly, the equation of motion is derived by applying the Lagrange principle. The effects of the main design parameters on the displacement transfer rate of the fluid-elastic isolator are analyzed. Secondly, parameter optimization design is conducted by employing the genetic algorithm for a civil helicopter. by Aiming at the minimum displacement transfer rate, the optimal parameters are determined. Lastly, the criterion for parameter optimization design is proposed considering both the displacement transfer rate and the weight cost. Design parameters with a high vibration isolation rate and low weight are obtained. Results reveal that the vibration isolation behavior of a fluid-elastic vibration isolator depends on the coupling effects of multiple parameters. The parameters obtained by the genetic algorithm demonstrate a higher vibration isolation rate than the ordinary parameter design. Based on the optimization criterion, the fluid elastic isolator possesses a higher vibration isolation rate and lower weight cost than the experimental result in the literature. And it will be helpful for the parameter design of the fluid elastic isolator.

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“…The fluid-elastic isolator is an effective helicopter vibration reduction method, and researchers have conducted massive research on it [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Displacement Transfer Characteristic and Parameter Optimization Design of Fluid-Elastic Isolator

Li¹,

Cheng²,

Qian³

et al. 2022

Advances in Transdisciplinary Engineering

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Theoretical modeling and experimental study of fluid-elastic isolator

DENG¹

2022

JNWPU

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The fluid-elastic vibration isolator, mounted on the final reduction channel of a helicopter, could reduce the vibration acting on the airframe effectively. It is an efficient approach to vibration load isolation, therefore has been studied and employed vastly abroad. A fluid-elastic vibration isolator is designed based on the theory of dynamic anti-vibration isolation. The equation of motion is derived by applying the Lagrange principle. Parametric study is carried out to investigate the dynamic performance with varying parameters. Then the main design parameters are determined on the basis of the vibration characteristics of a civil helicopter. Experiments are conducted on the fluid-elastic vibration isolator; the performances are evaluated for different excitation displacements employing the frequency-sweeping technique. Theoretical analysis indicates that the performance of an isolator is the overall effect of various parameters, therefore all the factors should be considered for a specific isolation frequency. Experimental results reveal that the fluid-elastic vibration isolator demonstrates only a 30% of displacement transfer rate. The theoretical analysis is in good agreement with the experimental finding. Experiments with different excitation displacements show that the displacement transfer rate increases slightly with the increase of the displacement.

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Dynamic Performance Analysis and Design for a Fluidlastic Isolator

Cited by 2 publications

References 3 publications

Investigation of the Displacement Transfer Characteristic and Parameter Optimization Design of Fluid-Elastic Isolator

Investigation of the Displacement Transfer Characteristic and Parameter Optimization Design of Fluid-Elastic Isolator

Theoretical modeling and experimental study of fluid-elastic isolator

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