CN102708852B - Three-phase phonon functional material structure comprising comb-type interlayer and manufacturing method - Google Patents
Three-phase phonon functional material structure comprising comb-type interlayer and manufacturing method Download PDFInfo
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- CN102708852B CN102708852B CN201210148557.0A CN201210148557A CN102708852B CN 102708852 B CN102708852 B CN 102708852B CN 201210148557 A CN201210148557 A CN 201210148557A CN 102708852 B CN102708852 B CN 102708852B
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Abstract
The invention discloses a three-phase phonon functional material structure comprising a comb-type interlayer, which comprises kernels. The outer surface of the kernel is coated with the interlayer; kernels are coaxially arranged in a matrix in an array; the interlayer is of a comb shape formed by wedges which are arranged on the outer surface of the kernel in a ring-shape; gaps are reserved between the wedges; the wedges on the interlayer are arranged on a strip body; the strip body is coaxially and circularly arranged on the outer surface of the kernel; the central axis of each wedge is vertical to the strip body or is at an inclination angle with the strip body; the elastic modulus of the interlayer is smaller than that of the matrix by one order; the radius of the kernel is greater than one quarter of a lattice constant; and the thickness of the interlayer is one ninth to one fourth of the radius of the kernel. According to the three-phase phone functional material structure provided by the invention, when the requirement on the structural acoustic characteristics are met, the structure size is reduced, a low frequency wideband acoustical band gap is obtained; and the structure comprises the kernels which are periodically distributed and are coated with the comb-shaped interlayer, and is simple to process.
Description
Technical field
The invention belongs to acoustics, related to the fields such as machinery, Condensed Matter Physics, mechanics and materialogy, relate in particular to a kind of three-phase phonon functional material structure containing pectination interlayer with and preparation method thereof.
Background technology
In recent years, a kind of artificial periodicity composite structure-phonon crystal gets more and more people's extensive concerning.Phonon crystal is a kind of vocal cords gap functional material being formed by two or more material periodic arrangement.The elastic wave of wherein propagating, owing to being subject to the periodic modulation of elastic constant, may produce phonon band gap, and the elastic wave propagation of certain frequency scope is suppressed, thereby is conducive to build the nothing environment that shakes, and for the vibration and noise reducing of structure, controls and gives new vitality.Therefore, phonon crystal has become one of active research field of materialogy, physics, acoustics, mechanics and other related discipline.
Along with the extensive application of artificial synthesis cycle compound substance at aspects such as national defense and military, Aero-Space, micro-electromechanical devices, the development of small size, broad band low frequency gap phonon crystal becomes the urgent problem of paying close attention in engineering.For example, low-frequency noise is regarded as harm humans health " invisible killer ".Yet, according to the elastic wave band gap of phonon crystal, forming mechanism, phonon crystal can be divided into Bragg scatter-type and two kinds of phonon crystals of local resonance type.The corresponding wavelength of the former band gap frequency and grating constant are in the same order of magnitude, and the corresponding wavelength of the latter's band gap frequency is much larger than grating constant.Therefore,, for Bragg scatter-type phonon crystal, only have the average velocity of wave of elastic wave by reducing in periodic structure to obtain low bandgap.Yet the elastic wave velocity in general material is very fast, is difficult to meet this requirement, the increased in size of having to.And for local resonance type phonon crystal, have and experimental results show that available reduced size obtains low bandgap.But due to the impact of Fano phenomenon, the effective attenuation of the interior elastic wave of band gap is smaller, formed band gap is sometimes narrow, therefore still exists certain limitation.Therefore, must find a kind of effective means, when reducing device size, effectively reduce band gap frequency and increase band gap width, and this be also one of difficult point of research at present.
For solving prior art above shortcomings, the present invention is proposed.
Summary of the invention
The object of the invention is the deficiency that is difficult to simultaneously meet small size and the requirement of broad band low frequency gap in order to overcome existing structure, a kind of three-phase phonon functional material structure containing pectination interlayer is provided.
For solving the problems of the technologies described above, realize object of the present invention, the invention provides a kind of three-phase phonon functional material structure containing pectination interlayer, comprise kernel, kernel outside surface is coated with interlayer, and kernel coaxial array spread configuration is in matrix, and interlayer is the wedge that ring shooting is arranged on kernel outside surface, interlayer profile is pectination, has gap between wedge.
Wedge on described interlayer is wholely set on a belt body, and this belt body coaxial annular is arranged on kernel outside surface.
Wedge on described interlayer is the axis rectangle vertical with belt body or trapezoidal.
Or the wedge on described interlayer is the quadrilateral that axis and belt body are obliquely installed.
The number of the wedge on described interlayer is at least 8.
The little magnitude of modular ratio matrix elastic modulus of described interlayer, the density of described kernel is more than the twice of matrix density, the radius of kernel is greater than 1/4th of grating constant; Thickness of interlayer is 1/9th to 1/4th of interior nuclear radius.
The present invention also provides the method for making of aforesaid three-phase phonon functional material structure, comprises the following steps:
Step 1), material is selected: the little magnitude of elastic modulus of the modular ratio matrix of pectination interlayer; The density of kernel is more than the twice of matrix density, and the radius of kernel is greater than 1/4th of grating constant;
Step 2), pectination interlayer is made: periodic arrangement wedge on straight belt body, and the cross sectional shape of wedge can be rectangle or trapezoidal, the axis of wedge is vertical with belt body; Or the irregular quadrilateral of wedge for become angle of inclination to arrange with belt body; Thickness of interlayer is 1/9th to 1/4th of interior nuclear radius;
Step 3), is wrapped in pectination interlayer on kernel; Pectination interlayer can adopt embedded centralized being wrapped on kernel, also can adopt evagination divergence expression to be wound around on kernel.
Step 4), tetragonal periodic arrangement is wound around after the kernel of pectination interlayer, and cast matrix forms three-phase phonon functional material structure.
Also comprise step 5), the applicability of method: for the requirement of different structure acoustic characteristic, repeating step 1)-step 4), form the three-phase phonon functional material structure that meets structural acoustic characteristic requirements.
The invention has the beneficial effects as follows when meeting structural acoustic characteristic requirements, reduce physical dimension, obtain broad band low frequency acoustics band gap, contain the kernel of the coated pectination interlayer of periodic distribution in structure, processing is simple.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by the detailed description with reference to below, can more completely understand better the present invention and easily learn wherein many advantages of following, but accompanying drawing described herein is used to provide a further understanding of the present invention, form a part of the present invention, schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention, wherein:
Fig. 1 is the wedge of three kinds of different cross section shapes; (a) rectangle, spacious and comfortable trapezoidal, (c) going to the bottom of (b) upper base the trapezoidal of spacious and comfortable upper base of going to the bottom;
Fig. 2 is pectination wedge schematic diagram; Wedge periodic arrangement is on very thin straight being with; (a) pectination wedge sectional view, (b) pectination wedge three-dimensional plot;
Fig. 3 is pectination wedge canoe; (a) embedded (concentrating) formula winding, (b) evagination (dispersing) formula are wound around;
Fig. 4 is three-phase phonon functional material structure cellular sectional view;
Fig. 5 is the three cross-talk functional material structures containing pectination interlayer;
Fig. 6 is the band structure figure (containing intact interlayer) of second embodiment;
Fig. 7 is the band structure figure (containing pectination interlayer, wedge axis is vertical with straight band) of second embodiment;
Fig. 8 is the band structure figure (containing pectination interlayer, wedge axis and the straight pitch angle of being with into) of second embodiment.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
A kind of three-phase phonon functional material structure going out as shown in Figure 1, comprise kernel 1, kernel 1 outside surface is coated with interlayer 2, kernel 1 coaxial array spread configuration is in matrix 3, interlayer 2 is arranged on the wedge 4 of kernel 1 outside surface for ring shooting, profile is pectination, has gap 5 between wedge 4, the little magnitude of modular ratio matrix 3 elastic modulus of interlayer 2.
As shown in Fig. 2 a, Fig. 2 b, the wedge 4 on interlayer is wholely set on belt body 6, and the cross sectional shape of wedge 4 is rectangle or trapezoidal.The number of wedge 4 is at least 8
As shown in Fig. 4 a, Fig. 4 b, belt body 6 coaxial annulars are arranged on kernel outside surface, are three-phase phonon functional material structure of the present invention.
Below in conjunction with accompanying drawing, method for making of the present invention is described in detail, comprises the following steps:
Step 4; As shown in Figure 1, tetragonal periodic arrangement is wound around after the kernel 1 of pectination interlayer, cast matrix 3, form three-phase phonon functional material structure, when pectination interlayer adopts evagination divergence expression to be wrapped on kernel 1, as shown in Figure 4 b, be wound around thin film at pectination sandwiching surface, while avoiding pouring into a mould matrix 3, pectination interlayer is filled.
Step 5; The applicability of method.For different structural acoustic characteristic requirements, repeating step-step 4, forms the three-phase phonon functional material structure that meets structural acoustic characteristic requirements.
Below in conjunction with instantiation, the present invention is further elaborated:
According to the requirement of structural acoustic characteristic, select suitable sandwich material; In the present embodiment, the elastic modulus of matrix material is E=3.9e7Pa, and the elastic modulus of sandwich material is E=5e6Pa, the little magnitude of modular ratio matrix material of sandwich material; The density of matrix is ρ=1200Kg/m
3, the density of kernel is ρ=7800Kg/m
3, inner core density is more than the twice of matrix density;
The cross sectional shape of wedge 3 as shown in Figure 2; Wedge 3 periodic arrangement, on belt body 5, as shown in Figure 3, form pectination interlayer, the thick 1mm of interlayer; Pectination interlayer being wrapped on kernel 2 to kernel 2(central cylinder) radius is 5mm, as shown in Figure 4; To be wound around kernel 2 periodic arrangement of pectination interlayer, cast matrix 1, forms the three-phase phonon functional material structure shown in Fig. 1; Fig. 5 is the cellular sectional view of Fig. 1, the length of side of cellular sectional view in Fig. 5 a and Fig. 5 b, and grating constant, is 15mm.Interior nuclear radius is greater than 1/4th of grating constant; Thickness of interlayer is between 1/9th to 1/4th of interior nuclear radius.
In the embodiment shown in Fig. 6, Fig. 7, Fig. 8, Fig. 6 is the band structure figure of the three-phase phonon functional material structure containing intact interlayer, Fig. 7 is the band structure figure perpendicular to the three-phase phonon functional material structure of belt body 5 containing pectination interlayer and wedge axis, and Fig. 8 is the band structure figure with the three-phase phonon functional material structure at 5 one-tenth certain angles of inclination of belt body containing pectination interlayer and wedge 3 axis.In figure, horizontal ordinate is reduced wave vector amount, and ordinate is frequency, and dash area represents acoustics band gap (i.e. the propagation of sound wave in this frequency range in structure is suppressed).For intact interlayer, the bandgap range of structure generation is 4227-5273Hz, and centre frequency is 4750Hz, and band gap width is 1046Hz.Pectination interlayer for wedge 3 axis perpendicular to belt body 5, the bandgap range of structure generation is 1828-3419Hz, and centre frequency is 2624Hz, and band gap width is 1591Hz.Pectination interlayer for wedge 3 axis with 5 one-tenth certain angles of inclination of belt body, the bandgap range of structure generation is 1789-3413Hz, and centre frequency is 2601Hz, and band gap width is 1624Hz.
By above-mentioned analysis, can be found out, phonon functional material structure designed according to this invention, by introducing pectination interlayer, can make the acoustics band gap of the phonon functional material structure generation broad band low frequency that size is less, and the position of band gap and width more easily regulate.
As mentioned above, embodiments of the invention are explained, but as long as not departing from fact inventive point of the present invention and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, within such variation is also all included in protection scope of the present invention.
Claims (9)
1. the three-phase phonon functional material structure containing pectination interlayer, comprise kernel, kernel outside surface is coated with interlayer, kernel coaxial array spread configuration is in matrix, it is characterized in that, described interlayer is the wedge that ring shooting is arranged on kernel outside surface, and interlayer profile is pectination, has gap between wedge; The little magnitude of modular ratio matrix elastic modulus of described interlayer, the density of described kernel is more than the twice of matrix density, the radius of kernel is greater than 1/4th of grating constant; Thickness of interlayer is 1/9th to 1/4th of interior nuclear radius.
2. a kind of three-phase phonon functional material structure according to claim 1, is characterized in that, the wedge on described interlayer is wholely set on a belt body, and this belt body coaxial annular is arranged on kernel outside surface.
3. a kind of three-phase phonon functional material structure according to claim 1, is characterized in that, the wedge on described interlayer is the axis rectangle vertical with belt body or trapezoidal.
4. a kind of three-phase phonon functional material structure according to claim 1, is characterized in that, the wedge on described interlayer is the quadrilateral that axis and belt body are obliquely installed.
5. a kind of three-phase phonon functional material structure according to claim 1, is characterized in that, the number of the wedge on described interlayer is at least 8.
6. a method for making for three-phase phonon functional material structure, is characterized in that, comprises the following steps:
Step 1), material is selected: the little magnitude of elastic modulus of the modular ratio matrix of pectination interlayer; The density of kernel is more than the twice of matrix density, and the radius of kernel is greater than 1/4th of grating constant;
Step 2), pectination interlayer is made: periodic arrangement wedge on straight belt body, and the cross sectional shape of wedge can be rectangle or trapezoidal, the axis of wedge is vertical with belt body; Or the irregular quadrilateral of wedge for become angle of inclination to arrange with belt body; Thickness of interlayer is 1/9th to 1/4th of interior nuclear radius;
Step 3), is wrapped in pectination interlayer on kernel;
Step 4), tetragonal periodic arrangement is wound around after the kernel of pectination interlayer, and cast matrix forms three-phase phonon functional material structure.
7. the method for making of a kind of three-phase phonon functional material structure according to claim 6, it is characterized in that, also comprise step 5), the applicability of method: for the requirement of different structure acoustic characteristic, repeating step 1)-step 4), forms the three-phase phonon functional material structure that meets structural acoustic characteristic requirements.
8. the method for making of a kind of three-phase phonon functional material structure according to claim 6, is characterized in that, in described step 3), pectination interlayer adopts embedded centralized being wrapped on kernel.
9. the method for making of a kind of three-phase phonon functional material structure according to claim 6, is characterized in that, in described step 3), pectination interlayer adopts evagination divergence expression to be wound around on kernel.
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| CN105931628B (en) * | 2016-04-18 | 2018-12-04 | 西安建筑科技大学 | A kind of phonon crystal axis of the discretization rubber layer with low frequency vibration damping characteristic |
| CN107061260B (en) * | 2017-06-28 | 2019-06-14 | 哈尔滨工程大学 | A kind of three screw pump based on phonon crystal rotor |
| CN114354766A (en) * | 2021-12-30 | 2022-04-15 | 中国特种设备检测研究院 | Manufacturing method of ultrasonic probe damping backing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6469682B1 (en) * | 1999-05-11 | 2002-10-22 | Agence Spatiale Europeenne | Periodic dielectric structure of the three-dimensional photonic band gap type and method for its manufacture |
| CN101777346A (en) * | 2010-01-21 | 2010-07-14 | 北京工业大学 | Two-dimensional Archimedes lattice acoustic band gap material |
| CN101989422A (en) * | 2010-11-10 | 2011-03-23 | 北京交通大学 | Non-convex section hole-containing phononic functional material structure and manufacturing method thereof |
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| KR20100128304A (en) * | 2008-03-03 | 2010-12-07 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | Process for audible acoustic frequency management in gas flow systems |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6469682B1 (en) * | 1999-05-11 | 2002-10-22 | Agence Spatiale Europeenne | Periodic dielectric structure of the three-dimensional photonic band gap type and method for its manufacture |
| CN101777346A (en) * | 2010-01-21 | 2010-07-14 | 北京工业大学 | Two-dimensional Archimedes lattice acoustic band gap material |
| CN101989422A (en) * | 2010-11-10 | 2011-03-23 | 北京交通大学 | Non-convex section hole-containing phononic functional material structure and manufacturing method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 刘晓峰等.夹层声子晶体板的带结构研究.《北京力学会第18届学术年会论文集》.2012,第45-46页. |
| 夹层声子晶体板的带结构研究;刘晓峰等;《北京力学会第18届学术年会论文集》;20120109;第45-46页 * |
| 泊松比对三维固/固声子晶体带隙的影响;马天雪等;《北京力学会第18届学术年会论文集》;20120109;第55-56页 * |
| 马天雪等.泊松比对三维固/固声子晶体带隙的影响.《北京力学会第18届学术年会论文集》.2012,第55-56页. |
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