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Composite damping supporting plate structure for ships

A pallet and ship technology, applied in the direction of hull, hull, hull parts, etc., can solve the problem of no major innovation, achieve good effect of vibration and noise reduction, reduce vibration and sound radiation, and good economy.

Inactive Publication Date: 2010-09-15
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, ship double-hull inboard noise control technology has been developed to a certain extent, but the current specific control measures for inboard noise problems are still mainly traditional methods such as sound absorption and flexible vibration isolation, and there is no major innovation

Method used

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  • Composite damping supporting plate structure for ships
  • Composite damping supporting plate structure for ships
  • Composite damping supporting plate structure for ships

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Effect test

Embodiment approach 1

[0015] to combine Figure 1~2 , the ship composite damping supporting plate structure of the present invention comprises a supporting plate 1, a hollow anti-vibration mass 2, a sound-absorbing material 3 and a belt plate 4, the hollow anti-vibration mass 2 is installed on the supporting plate 1, and the hollow anti-vibration mass The block is fixed on one side of the supporting plate, the belt plate 4 is fixed on the hollow vibration-proof mass block 2, and the sound-absorbing material 3 is installed on the belt plate 4. The sound-absorbing material 3 is polyurethane, and the average sound absorption coefficient in the 10-3K frequency band is over 85%. The hollow anti-vibration mass 2 is made of high shear modulus and high-density metal material. The cross-sectional size of the hollow anti-vibration mass 2 is about Torr 8-10 times the thickness of the plate, the weight 2 of the hollow anti-vibration mass should be greater than 60% of the total weight of the solid anti-vibratio...

Embodiment approach 2

[0022] to combine Figure 1~2 , the ship composite vibration damping pallet structure of the present invention comprises a pallet 1, a hollow vibration damping mass 2, a sound-absorbing material 3 and a belt plate 4, the hollow vibration damping mass 2 is installed on the pallet 1, and the middle of the pallet is disconnected , the hollow anti-vibration mass block is fixed between the two supporting plates. The belt plate 4 is fixed on the hollow anti-vibration mass block 2 , and the sound-absorbing material 3 is installed on the belt plate 4 . The sound-absorbing material 3 is polyurethane, and the average sound absorption coefficient in the 10-3K frequency band is over 85%. The hollow anti-vibration mass 2 is made of high shear modulus and high-density metal material. The cross-sectional size of the hollow anti-vibration mass 2 is about Torr 8-10 times the thickness of the plate, the weight 2 of the hollow anti-vibration mass should be greater than 60% of the total weight o...

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Abstract

The invention aims to provide a composite damping supporting plate structure for ships. The invention comprises a supporting plate, a hollow damping mass block, an acoustic absorbent and a band plate, wherein the hollow damping mass block is installed on the supporting plate, the band plate is fixed on the hollow damping mass block, and the acoustic absorbent is installed on the band plate. By utilizing the rigid damping technology, on the premise of no large deformation of the supporting plate structure, the invention obtains favorable effects of damping and noise reduction, and has the functions of damping and sound absorption. On the premise of minimally increasing the weight of the supporting plate, the invention effectively reduces the vibration and acoustic radiation at the power bay section of the ship, has the advantages of higher cost-benefit ratio and high economical efficiency, is a structural acoustic design between double layer hulls suitable for various ships, and has wide application prospects.

Description

technical field [0001] The invention relates to a vibration and noise reduction device, in particular to a vibration and noise reduction device applied in the field of ships. Background technique [0002] Noise is one of the main harmful factors to the vitality of ships and the environment. In recent years, with the development of the maritime industry, the tonnage, speed and power of the power plant have been continuously increased, making the noise pollution of ships more and more serious. Ship noise directly affects the crew's health, life and work efficiency. [0003] In recent years, ship double-hull shipboard noise control technology has been developed to a certain extent, but the current specific control measures for shipboard noise problems are still mainly traditional methods such as sound absorption and flexible vibration isolation, without major innovations. Based on the analysis of the transfer characteristics and quantitative relationship of ship-to-board vibr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B3/20
Inventor 姚熊亮计方庞福振戴绍仕郭绍静尹绪超王强勇张阿漫
Owner HARBIN ENG UNIV
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