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Composite molding preparation method of three-component phononic crystal

A technology of phononic crystals and compound molding, which is applied in the direction of sound-producing devices and instruments, can solve the problems of limiting the application research of three-component phononic crystals and hindering the development of three-component phononic crystal technology, so as to promote rapid development and achieve sustainable development. Strong design and uniform interface effect

Active Publication Date: 2010-06-16
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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Problems solved by technology

Domestic and foreign researchers focus on the basic theory, bandgap calculation, simulation analysis and performance characterization of three-component phononic crystals. There are few researches on the composite molding preparation of three-component phononic crystals, and there is no public information yet. Literature reports limit the application research of three-component phononic crystals in vibration and noise control, and hinder the development of three-component phononic crystal technology

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  • Composite molding preparation method of three-component phononic crystal
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Embodiment Construction

[0045] A compound molding preparation method of a three-component phononic crystal of the present invention includes a structural design method of a mold and a composite preparation method of a three-component phononic crystal that is deployed around the mold, and the mold is composed of a first forming plate 1 and a second forming plate 2 , the third forming plate 3, the fourth forming plate 4 and the fifth forming plate 5 respectively, the first forming plate 1 and the second forming plate 2 prepare the two-element phononic crystal composed of the vibrator and the cladding, and the third forming The plate 3 , the fourth forming plate 4 and the fifth forming plate 5 prepare a three-element phononic crystal composed of a two-element phononic crystal and a matrix. It can be seen from the described method that the present invention actually includes a two-component forming method.

[0046] Mold is owing to be made up of the first molding board 1, the second molding board 2, the ...

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Abstract

The invention discloses a composite molding preparation method of three-component phononic crystal, comprising a mould structure design method and a three-component phononic crystal composite preparation method developed around a mould. The mould is composed of a first molding plate (1), a second molding plate (2), a third molding plate (3), a fourth molding plate (4) and a fifth molding plate (5), wherein the first molding plate and the second molding plate form a two-component phononic crystal composed of an oscillator and a wrapping body; the third molding plate, the fourth molding plate and the fifth molding plate prepare the three-component phononic crystal composed of the two-component phononic crystal and a substrate. The invention is a composite molding preparation method which not only contains grouping shaping but also contains layering shaping, and can prepare the three-component phononic crystal with low cost. The prepared three-component phononic crystal has the advantages of favorable combination property, stable performance, even interface, strong designability and the like.

Description

technical field [0001] The invention belongs to the technical field of composite molding of materials, and in particular relates to a composite molding preparation method of a three-component phononic crystal 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,...

Claims

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Application Information

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