Seamless-molding preparation method of scatterer for sonic crystal

A technology of phononic crystals and scatterers, which is applied in the field of seamless molding and preparation of scatterers for phononic crystals, can solve the problems of scatterers that have not been reported, and achieve the effects of strong designability, stable performance, and uniform interface

Active Publication Date: 2011-08-31
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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Problems solved by technology

But there is no report about the seamless molding preparation method of the scatterer

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  • Seamless-molding preparation method of scatterer for sonic crystal
  • Seamless-molding preparation method of scatterer for sonic crystal
  • Seamless-molding preparation method of scatterer for sonic crystal

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Embodiment Construction

[0030] In the preparation method of seamless molding of scatterers for phononic crystals according to the present invention, the scatterers prepared by molding are composed of a covering body and a vibrator, and the covering body is made of silicone rubber, which has soft material, large shear modulus, It has the characteristics of low density and simple molding.

[0031] The vibrator adopts metal particle balls, metal particle balls or steel balls, or tungsten balls, or copper balls, or lead balls, or aluminum balls. Metal particle balls have the characteristics of high rigidity and high density.

[0032] The seamless molding preparation of the cladding body and the vibrator is realized through the scatterer forming mold. The structure of the scatterer forming mold is as follows:

[0033] combine Figure 1-2 , The scatterer forming mold is divided into a concave forming plate 2 and a convex forming plate 1. The concave forming plate is generally rectangular, but the concav...

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Abstract

The invention discloses a seamless-molding preparation method of a scatterer for a sonic crystal, which comprises: realizing seamless-molding preparation between a cladding body and an oscillator by a concave molding board (2) and a convex molding board (1) of a scatterer molding mould; washing and drying the oscillator; uniformly casting silicon rubber mixture of which bubbles are eliminated into each hemispheric concave circular place of the concave molding board; covering the convex molding board onto the concave molding board, and fastening the convex molding board and the concave moldingboard together by a bolt for curing molding in an oven at 30-100DEG C for 24 hours, so as to obtain hemispheric silicon rubber; carrying out painting process on the bottom of the oscillator, and putting the oscillator into the hemispheric silicon rubber after drying for 0.5 hour; fastening another concave molding board onto the upper part of the oscillator for curing molding in an oven with 30-100DEG C for 24 hours, so as to obtain a scatterer composed of the oscillator and the cladding body. The prepared scatterer has the advantages of steady performance, uniform interface, seamless and strong designable performances.

Description

technical field [0001] The invention belongs to the technical field of composite molding of materials, and in particular relates to a preparation method for seamless molding of a phonon crystal scatterer for acoustics, urban environment, industrial noise control, aviation noise control and navigation noise control. Background technique [0002] In recent years, the research on the propagation of classical waves in periodic composite media is extremely active, and the functional materials with artificial structures with elastic wave band gaps are called phononic crystals, and the phononic crystals composed of three component materials are called phononic crystals. Three-component phononic crystal. [0003] Phononic crystals have similar basic characteristics to photonic crystals: phononic crystals have energy bands, and there is an acoustic band gap between the energy bands. When the frequency of the sound wave falls within the frequency range of the sound wave band gap, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10K11/168G10K11/162
Inventor 王绪文孙英富赵树磊
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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