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Sandwich plate vibration absorbing structure based on micro local resonance subarrays

A local resonance and sandwich technology, which is applied in the field of vibration-absorbing sandwich sandwich panels, can solve the problems of insignificant low-frequency effects, complex control systems, and low reliability, and achieve the effects of suppressing vibration and noise, simple control systems, and high reliability

Active Publication Date: 2017-05-31
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0004] The disadvantages of the existing technology are: this kind of application is relatively rare in domestic literature and patents, and the existing traditional damping and other passive control methods have no obvious effect at low frequencies. Although the active control technology is mainly aimed at low frequencies, it has high cost and complicated control system. , low reliability

Method used

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  • Sandwich plate vibration absorbing structure based on micro local resonance subarrays
  • Sandwich plate vibration absorbing structure based on micro local resonance subarrays
  • Sandwich plate vibration absorbing structure based on micro local resonance subarrays

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] Please refer to the following Figure 1 to Figure 3 , the invention discloses a sandwich panel vibration-absorbing structure based on a micro-local resonator array, including a pair of installation limit brackets 3 fixedly installed inside the sandwich sandwich panel 1 and installed on the installation limit bracket 3 according to specific rules The resonator array; wherein, a pair of installation limit brackets 3 are arranged in parallel, the array of vibrator units 2 is suspended between a pair of installation limit brackets 3, and the vibrator unit 2 is used to absorb low-frequency vibration energy from the outside. The number of installation limit brackets 3 is at least one pair, not limited to one pair. The vibrator unit 2 is specifical...

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Abstract

The invention discloses a sandwich plate vibration absorbing structure based on micro local resonance subarrays. The sandwich plate vibration absorbing structure comprises a sandwich plate and at least one resonance subarray arranged in the sandwich plate, wherein each resonance subarray comprises a pair of parallel installation limiting supports and a plurality of vibrator units suspended between the installation limiting supports, and the vibrator units are used for absorbing low-frequency vibration energy from outside. The resonance subarray is arranged in the sandwich plate, so that the sandwich plate has a good sound insulation property at the low frequency, particularly near the low order natural frequency of the sandwich plate. The sandwich plate vibration absorbing structure has the advantages of low cost, simple control system and high reliability.

Description

technical field [0001] The invention belongs to the field of low-frequency vibration absorption, and in particular relates to a sandwich sandwich plate vibration absorption structure based on a micro-local resonator array. Background technique [0002] Due to its light weight, high stiffness-to-mass ratio and excellent sound insulation performance, sandwich sandwich panels are widely used in the fields of transportation and building materials. However, it is found in the actual engineering use that the sound insulation performance of the sandwich panel structure is not good at low frequencies, especially near the low-order natural frequency of the panel itself. In this regard, in general engineering, additional vibration and noise suppression technologies will be used to deal with sandwich panels. Commonly used vibration and noise control technologies can generally be divided into two categories: passive control and active control. For the traditional passive vibration and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F15/08
CPCF16F15/08
Inventor 杨浩森郑辉
Owner SHANGHAI JIAO TONG UNIV
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