Research on Free Damping Treatment for a Marine Life Hoist of the Helicopter

Jia Rui Qi; Jing Tao Dai; Yan Li Li; Dan Feng Zhang

doi:10.4028/www.scientific.net/AMR.518-523.3859

Paper Titles

Application of BP Neural Network in Traffic Noise Prediction
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Detecting Known Objects in a Noisy Scene Using Generalized Likelihood Ratio Test
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Improved EEMD in the Application of Signal Singularity Detection
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Model and Application on Displacement Calculation of Abutment by Considering Earthquake Effects
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Research on Free Damping Treatment for a Marine Life Hoist of the Helicopter
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Study on Filling Fraction of Bandgap Lowest Starting Frequency of one Dimension Phononic Crystals
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Vibration Research of Electromechanical Coupling System on HEV
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Viscous-Elastic Half-Space Vibration Stimulated by High-Speed Moving Loads of Different Speeds
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Analysis on the Effect of System Parameter on Double Cantilevers Vibro-Impact System Response
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 518-523Research on Free Damping Treatment for a Marine...

Research on Free Damping Treatment for a Marine Life Hoist of the Helicopter

Abstract:

Free damping treatment for a marine life hoist of the helicopter is analyzed in this paper. Based on the pipe structure used in actual life hoist bracket, the complex rigidity method is used to analyze the damping loss factor of the pipe structure. When the temperature is 30°C and the thickness of the damping material is 2.5mm, the damping loss factor of the structure increases by 9.83 times. The damping ratio of the first mode reaches 11.61%. The results indicate that the free damping treatment can obviously increase the damping loss factor and the modal damping ratio of the structure, which can mitigate structural vibration and reduce noise induced by the vibration.