Broadband vibration suppression device using acoustic black hole characteristics

A vibration suppression and broadband technology, applied in the field of vibration reduction, can solve problems such as weak coupling, difficulty, and cumbersome adjustment parameters, and achieve the effect of avoiding the tuning process

Active Publication Date: 2019-08-06
THE HONG KONG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adjusting parameters is also tedious and difficult
Although waveguide absorbers can be effective over a wide frequency band, the coupling between this auxiliary system and the main structure is relatively weak

Method used

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  • Broadband vibration suppression device using acoustic black hole characteristics
  • Broadband vibration suppression device using acoustic black hole characteristics
  • Broadband vibration suppression device using acoustic black hole characteristics

Examples

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Embodiment Construction

[0028] Embodiments of the present application will be described in detail below. It should be noted that the embodiments described here are for illustration only, and are not intended to limit the scope of the present application.

[0029] The present invention provides a broadband vibration suppression device using the characteristics of the acoustic black hole, wherein the vibration suppression device utilizing the characteristics of the acoustic black hole is used as an auxiliary additional device, thereby realizing the broadband vibration suppression of the structure with the minimum adjustment, that is, in the broadband to reduce unwanted vibrations of the main structure. The design process of this additional sub-assembly is expected to be simple and easy to implement in various applications.

[0030] The present application utilizes the "Acoustic Black Hole" (Acoustic Black Hole, ABH) phenomenon to design a broadband effective vibration absorber to reduce various types ...

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PUM

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Abstract

The present invention relates to a broadband vibration suppression device using acoustic black hole characteristics, the device comprising: a vibration damping body including a uniform portion havinga constant thickness and a tapered portion integrally connected to the uniform portion, the tapered portion extending from a connection point in such a manner as to gradually decrease in thickness from the uniform portion to a predetermined thickness; and a damping layer attached to the tapered portion of the vibration damping body. The vibration suppression device can effectively suppress vibration and reduce noise on a broadband, and is simple in design.

Description

technical field [0001] The present application relates to the field of vibration reduction, and more specifically, to a broadband vibration suppression device utilizing the characteristics of an acoustic black hole. Background technique [0002] Vibration control is important for many industrial products such as transport vehicles, machines and electronic instruments. Vibration of structures, equipment and machines directly affects product acceptance and competitiveness. Increasingly stringent regulations require vibrations to be limited to acceptable levels to avoid potential problems such as fatigue, noise and discomfort. Efforts have been made to develop methods of reducing undesired structural or mechanical vibrations. [0003] One of the popular and effective methods of controlling structural vibrations is to attach auxiliary systems to the original structure being controlled. Dynamic vibration absorber (Dynamic vibration absorber, DVA) is one of the most commonly us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F15/02F16F15/04G10K11/16
CPCF16F15/02F16F15/04G10K11/16F16F15/08F16F2230/40F16F2226/042F16F2226/048G10K11/168F16F7/10F16F2222/08F16F2226/04F16F2228/007F16F2228/04F16F2230/18F16F2234/00
Inventor 成利周桐
Owner THE HONG KONG POLYTECHNIC UNIV
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