Analysis of Design Parameters Effects on Vibration Characteristics of Fluidlastic Isolators

Jing-hui, Deng; Cheng, Qu

doi:10.1088/1757-899x/224/1/012012

Cited by 4 publications

(1 citation statement)

References 1 publication

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“…From 2010 to 2016, scholars from Nanjing University of Aeronautics and Astronautics [12][13][14][15][16] successively began to explore the principle and design method of the liquid-elastic vibration isolator, but sample development and related experimental work did not start. In 2016, researchers such as Deng Jinghui and Cheng Qiyou from China Helicopter Design and Research Institute [17][18][19][20][21][22] carried out systematic research on fluidlatic isolators, filling the research gap of liquid-elastic vibration isolators in China from principle exploration, design method, test method and installation of fluidlatic isolator. However, there are few domestic researches on the base-type fluidlatic isolator.…”

Section: Figure 2 the Model 427 Pylon Isolation Systemmentioning

confidence: 99%

Sensitivity analysis regarding the structural parameters of the inner cylinder embedded fluidlastic base

Dai¹,

Yuan²,

Qian³

et al. 2022

J. Phys.: Conf. Ser.

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The inner cylinder embedded fluidlastic base is a device installed on the main reduction transmission channel of the helicopter to isolate the vibration load of the fuselage from the rotor system, whose vibration isolation efficiency is quite high. Compared with the traditional combined fluidlatic isolator, the fluidlastic base has higher reliability and safety in engineering application prospects. In this paper, taking a UAV as the research object, the structure of the fluidlastic base is preliminarily designed in light of structure space of its main reduction system, and its dynamic equation is established according to the working principle of the fluidlastic base to deduce the force transmission rate expression. Finally, taking the minimum force transmission rate as the research target, sensitivity analysis of the structural parameters is carried out for the fluidlastic base, which provides an optimization method for the optimal design of the vibration isolator.

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Section: Figure 2 the Model 427 Pylon Isolation Systemmentioning

confidence: 99%

Sensitivity analysis regarding the structural parameters of the inner cylinder embedded fluidlastic base

Dai¹,

Yuan²,

Qian³

et al. 2022

J. Phys.: Conf. Ser.

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show abstract

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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Research on Weight Optimization of Fluidlastic Isolator of Helicopter Main Reduction Based on Isight Platform

Dai¹,

Qian²,

Chen³

et al. 2022

2022 2nd Asia-Pacific Conference on Communications Technology and Computer Science (ACCTCS)

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Analysis of Design Parameters Effects on Vibration Characteristics of Fluidlastic Isolators

Cited by 4 publications

References 1 publication

Sensitivity analysis regarding the structural parameters of the inner cylinder embedded fluidlastic base

Sensitivity analysis regarding the structural parameters of the inner cylinder embedded fluidlastic base

Theoretical modeling and experimental study of fluid-elastic isolator

Research on Weight Optimization of Fluidlastic Isolator of Helicopter Main Reduction Based on Isight Platform

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