CN108775091A - A kind of compound locally resonant metamaterial sound panel - Google Patents
A kind of compound locally resonant metamaterial sound panel Download PDFInfo
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- CN108775091A CN108775091A CN201810886162.8A CN201810886162A CN108775091A CN 108775091 A CN108775091 A CN 108775091A CN 201810886162 A CN201810886162 A CN 201810886162A CN 108775091 A CN108775091 A CN 108775091A
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- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000011358 absorbing material Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 229920006284 nylon film Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B1/86—Sound-absorbing elements slab-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/8227—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only screens ; Arrangements of sound-absorbing elements, e.g. baffles
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B2001/8457—Solid slabs or blocks
- E04B2001/8461—Solid slabs or blocks layered
- E04B2001/8466—Solid slabs or blocks layered with an intermediate layer formed of lines or dots of elastic material
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Abstract
The present invention discloses a kind of compound locally resonant metamaterial sound panel, including locally resonant metamaterial layer, and the density gradient of the locally resonant metamaterial layer is distributed as：According to acoustic contact face, density gradually increases, is gradually reduced, first increases to reduce again or first reduce and increase again from top to bottom.The present invention provides a kind of structure designabilities strong, material therefor and the more free compound locally resonant metamaterial sound panel of structure size, the flexible freedom of the design method of the invention, light weight, volume are thin, sound-insulation capability protrudes, simultaneously can modularization installation, construction it is quick and convenient.
Description
Technical field
The present invention relates to building material field, especially a kind of compound locally resonant metamaterial sound panel is main to apply
In places such as building fields, including house, hotel, factory, conference hall.
Background technology
With the development of science and technology, either in industry, human lives and military every field, it is various to set
Standby, machine military equipment is all towards enlargement, and heavy loading, lighting, the directions such as high speed are developed；These machinery equipments run institute
The noise problem of initiation becomes increasingly conspicuous, the health of these noise hazards people interferes the normal life of people, influences machine
The safe operation of equipment causes prodigious influence to the fighting efficiency of weaponry and stealthy function.And the low frequency in noise point
Amount has again, and transmission capacity is strong, the characteristics of being not easy in communication process by Absorption of Medium so that we are difficult effective isolation low frequency
Noise.
By theoretical research it was found that in low frequency end, the sound insulation rule of traditional sound insulating material meets mass law,
Want to reach satisfied sound insulation effect, must just increase the quality of sound insulating material, here it is we insulate against sound cost greatly increase.
Therefore, how in the case where not increasing production cost, low-frequency noise is effectively reduced just into research heat in recent decades
Point.
The 1990s, there has been proposed the concepts of phonon crystal, before 2000, mainly in Bragg type phonons
A large amount of achievement in research is obtained in terms of crystal, but is limited to lattice dimensions and the matching problem of wavelength, can not be applied and low frequency end
Damping noise reduction.To after 2000, Liu Zhengyou et al. is found that the corresponding wavelength of band gap is more than two orders of magnitude of lattice dimensions
Physical phenomenon, it is proposed that the thought of locally resonant unit realizes small size and controls big wavelength, to solving the problems, such as low-frequency noise
Provide new thinking and means.By 2008, Yang Zhiyu had also been proposed a kind of film-type sound with dynamic negative mass density
Meta Materials are learned, a kind of solution more adaptable is provided to solving low frequency noise reduction.
In recent years, either all being obtained in terms of the theoretical foundation of sound insulation noise abatement, computational methods or application study
Significant progress, to one-dimensional, two dimension, three-dimensional metamaterial structure has carried out effective analysis of band structure.Mainly have at present
The structural model of so several sound insulation and noise reducings：
1. in acoustic construction unit of the intrinsic silicon embedment with resonance characteristic；
2. adding locally resonant unit on plate and shell structure surface：
3. film-type acoustic metamaterial.
As the sound insulation characteristics to the above material carries out continuing in-depth study, it can will be preferably played low
Advantage in terms of frequency sound insulation and noise reducing provides the means of better sound insulation and noise reducing for us.And for complicated boundary condition, extremely answer
It is also further had developed with the research of the sound insulation and noise reducing under environment, it is believed that thoroughly solved for comprehensively in the near future low
The problem of frequency noise reduction, provides more effective, more practical solution.
This patent proposes gradient composites concept, structure combined concept, it is desirable to provide a kind of structure designability is strong,
Material therefor and the more free compound locally resonant metamaterial sound panel of structure size.
Invention content
The present invention is intended to provide a kind of compound locally resonant metamaterial sound panel, structure designability is strong, material therefor
And structure size is freer, can be freely combined and designed according to actual sound insulation and noise reducing.
The invention is realized in this way：
A kind of compound locally resonant metamaterial sound panel, including locally resonant metamaterial layer, the super structure material of locally resonant
The density gradient of the bed of material is distributed as：According to acoustic contact face, density gradually increases, is gradually reduced, first increases and reduce again from top to bottom
Or first reduces and increase again.
As being further improved for invention, from top to bottom according to acoustic contact face, the locally resonant metamaterial layer can
To be needed on its upper side or downside setting face layer according to specific.
As a further improvement on the present invention, it can be used alone, composite layer can also be made in conjunction with other layer structures
Structure is closed to use.
As being further improved for invention, the face layer is flase floor, porous plate or tablet, and the face layer is by timber, modeling
Material, aluminium alloy, steel, resin or porous sound absorbing material are made；The thickness of the face layer is 0.1 ~ 20mm.
As being further improved for invention, the thickness of the face layer is 0.1 ~ 5mm.
As being further improved for invention, the locally resonant metamaterial layer is at least one layer, and each layer locally resonant is super
Structure material layer is made of opening grid, elastic film and rigid bulk.
As being further improved for invention, the opening grid is composed of at least one of quadrangle, hexagon.
As being further improved for invention, the opening grid material by plastics, aluminium alloy, steel, glass, composite material or
Glass-fiber-plate is made, and the wall thickness of the opening grid is 0.1 ~ 5mm.
As being further improved for invention, the elastic film is overlying on the upper and lower end face of opening grid or is clipped in two openings
Between the side of grid.
As being further improved for invention, the material of the elastic film is polypropylene film, nylon film, polyester
The thickness of at least one of film, polyethylene film or silicone rubber membrane, the elastic film is no more than 2mm.
As being further improved for invention, the thickness of the rigidity bulk is no more than 5mm, rigid bulk in grid single lattice
Quality is adjusted with quantity according to required intrinsic frequency.
For compared with prior art, the beneficial effects of the invention are as follows：
1. the present invention proposes gradient composites concept, structure combined concept, Graded Density can widen having for sound insulation room
Imitate bandwidth.
2. by using the locally resonant metamaterial layer being distributed with density gradient, cooperation is using opening grid, elasticity
Independent assortment between film and rigid bulk can select suitable density gradient distribution and group according to actual environment needs
Conjunction mode, to reach best sound insulation and noise reducing efficiency.
3. light weight of the present invention, volume are thin, sound-insulation capability protrude, while can modularization installation, construction it is quick and convenient.
Description of the drawings
Fig. 1 is a kind of each schematic diagram of a layer structure of compound locally resonant metamaterial sound panel provided by the invention.
Fig. 2-Fig. 5 is a kind of density gradient schematic diagram of compound locally resonant metamaterial sound panel provided by the invention.
Fig. 6-Fig. 7 is the combination of shapes structural schematic diagram of opening grid provided by the invention, elastic film and rigid bulk.
Fig. 8-Fig. 9 is the position relationship schematic diagram between elastic film provided by the invention and opening grid.
Description of the drawings：1- opening grids, 2- elastic films, 3- rigidity bulks, 10- locally resonant metamaterial layers, the faces 20-
Layer.
Specific implementation mode
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below in conjunction with the accompanying drawings and specifically
The present invention is further described for embodiment.
Embodiment 1
A kind of compound locally resonant metamaterial sound panel as shown in Figure 1, including locally resonant metamaterial layer 10, the office
The density gradient of domain resonance metamaterial layer 10, which is distributed, is as shown in Figure 2-5：According to acoustic contact face, density is gradual from top to bottom
Increase, be gradually reduced, first increasing to reduce again or first reduce and increase again.
So far, the present invention, which proposes gradient composites concept, Graded Density, can widen the effective bandwidth of sound insulation room,
Suitable density gradient can be selected to be distributed according to actual environment needs, to reach best sound insulation and noise reducing efficiency.
It should be noted that the black dot in Fig. 2-Fig. 5 is expressed as density, black dot more multi-density is bigger, is scheming
In 6- Fig. 9, black dot is expressed as rigid bulk, in the case where above-mentioned word indicates, should not exist and misread the case where reading.
Embodiment 2
Further, as shown in Figure 1, from top to bottom according to acoustic contact face, the locally resonant metamaterial layer 10 can be according to
It is needed on its upper side or downside setting face layer 20 according to specific.
Preferably, face layer 20 is flase floor, porous plate or tablet, the face layer by timber, plastics, aluminium alloy, steel,
Resin or porous sound absorbing material are made；The thickness of the face layer is 0.1 ~ 20mm, is still more preferably 0.1 ~ 5mm.Using upper
The surface layer structure stated, material is simple and easy to get, and sound insulation effect is good.
Signified " can be arranged according to specific needs " of the invention refers to that can be needed very according to actual environment needs, construction
To cost needs, decide whether setting face layer, side or two sides layer are set, such as：If the present invention is mounted on cement base bottom
On, since cement base bottom can substitute face layer in sound insulation value, then the face layer that can remove cement surface side uses.
Further, compound locally resonant metamaterial sound panel of the invention can be used alone, and can also combine it
His layer structure makes composite laminated structural use.
Embodiment 3
Further, as shown in Fig. 6-Fig. 9, the locally resonant metamaterial layer is at least one layer, each super structure of layer locally resonant
Material layer 10 is made of opening grid 1, elastic film 2 and rigid bulk 3.
Preferably, as Figure 6-Figure 7, the opening grid 1 by least one of quadrangle, hexagon combine and
At.1 material of opening grid is made of plastics, aluminium alloy, steel, glass, composite material or glass-fiber-plate, the opening grid 1
Wall thickness be 0.1 ~ 5mm.
Preferably, as illustrated in figs. 8-9, the elastic film 2 is overlying on the upper and lower end face of opening grid 1（Fig. 8）Or it is clipped in
Between the side of two opening grids 1（Fig. 9）.
Preferably, the material of the elastic film 2 be polypropylene film, nylon film, polyester film, polyethylene film or
The thickness of at least one of silicone rubber membrane, the elastic film 2 is no more than 2mm.
Preferably, the thickness of the rigid bulk 3 is no more than 5mm, in grid single lattice the quality with quantity of rigid bulk according to
It is adjusted according to required intrinsic frequency.
So far, the present invention has also been proposed structure combined concept, opening grid, elastic film and rigid bulk shape, group
Conjunction mode and position relationship can specifically be designed according to noise source, and the combination that different situations are wanted is different.
To sum up, the present invention provides a kind of structure designabilities strong, material therefor and the more free combined station of structure size
Resonate metamaterial sound panel in domain, and the flexible freedom of the invention design method, light weight, volume are thin, sound-insulation capability protrudes, while can
Modularization is installed, and construction is quick and convenient.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (10)
1. a kind of compound locally resonant metamaterial sound panel, which is characterized in that including locally resonant metamaterial layer, the office
The density gradient of domain resonance metamaterial layer is distributed as：According to acoustic contact face from top to bottom density gradually increase, be gradually reduced,
First increase to reduce again or first reduce and increase again.
2. compound locally resonant metamaterial sound panel according to claim 1, which is characterized in that according to acoustic contact face
From top to bottom, the locally resonant metamaterial layer can need on its upper side or downside setting face layer according to specific.
3. compound locally resonant metamaterial sound panel according to claim 2, which is characterized in that the face layer is grid
Plate, porous plate or tablet, the face layer are made of timber, plastics, aluminium alloy, steel, resin or porous sound absorbing material；The face layer
Thickness be 0.1 ~ 20mm.
4. compound locally resonant metamaterial sound panel according to claim 3, which is characterized in that the thickness of the face layer
For 0.1 ~ 5mm.
5. according to the compound locally resonant metamaterial sound panel of claim 1-4 any one of them, which is characterized in that the office
Metamaterial layer is resonated as at least one layer in domain, and each layer locally resonant metamaterial layer is by opening grid, elastic film and Stiff Block
Material is constituted.
6. compound locally resonant metamaterial sound panel according to claim 5, which is characterized in that the opening grid by
At least one of quadrangle, hexagon are composed.
7. compound locally resonant metamaterial sound panel according to claim 6, which is characterized in that the opening grid material
Material is made of plastics, aluminium alloy, steel, glass, composite material or glass-fiber-plate, and the wall thickness of the opening grid is 0.1 ~ 5mm.
8. compound locally resonant metamaterial sound panel according to claim 5, which is characterized in that the elastic film covers
In the upper and lower end face of opening grid or between being clipped in the side of two opening grids.
9. compound locally resonant metamaterial sound panel according to claim 8, which is characterized in that the elastic film
Material is at least one of polypropylene film, nylon film, polyester film, polyethylene film or silicone rubber membrane, the elasticity
The thickness of film is no more than 2mm.
10. compound locally resonant metamaterial sound panel according to claim 5, which is characterized in that the rigidity bulk
Thickness be no more than 5mm, the quality of rigid bulk is adjusted with quantity according to required intrinsic frequency in grid single lattice.
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| CN201810886162.8A CN108775091A (en) | 2018-08-06 | 2018-08-06 | A kind of compound locally resonant metamaterial sound panel |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736464A (en) * | 2019-02-14 | 2019-05-10 | 北京市劳动保护科学研究所 | A kind of modularization acoustic construction |
| CN110344510A (en) * | 2019-07-29 | 2019-10-18 | 南京航空航天大学 | A kind of multilayer sound insulation wall construction and preparation method thereof with wave arrestment floor |
| CN111105773A (en) * | 2020-01-07 | 2020-05-05 | 深圳市航天新材科技有限公司 | Acoustic superstructure and sound baffle based on composite membrane |
| CN113221268A (en) * | 2021-04-30 | 2021-08-06 | 西安交通大学 | Spatial gradient metamaterial for pipeline noise control and design method |
| CN113858726A (en) * | 2021-09-14 | 2021-12-31 | 吉林大学 | Index gradient acoustic covering layer with embedded scatterers and cavities |
| CN114495884A (en) * | 2022-01-13 | 2022-05-13 | 四川大学 | Acoustic metamaterial lightweight design method and train low-frequency noise reduction composite floor |
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| CN109736464A (en) * | 2019-02-14 | 2019-05-10 | 北京市劳动保护科学研究所 | A kind of modularization acoustic construction |
| CN110344510A (en) * | 2019-07-29 | 2019-10-18 | 南京航空航天大学 | A kind of multilayer sound insulation wall construction and preparation method thereof with wave arrestment floor |
| CN111105773A (en) * | 2020-01-07 | 2020-05-05 | 深圳市航天新材科技有限公司 | Acoustic superstructure and sound baffle based on composite membrane |
| CN113221268A (en) * | 2021-04-30 | 2021-08-06 | 西安交通大学 | Spatial gradient metamaterial for pipeline noise control and design method |
| CN113858726A (en) * | 2021-09-14 | 2021-12-31 | 吉林大学 | Index gradient acoustic covering layer with embedded scatterers and cavities |
| CN114495884A (en) * | 2022-01-13 | 2022-05-13 | 四川大学 | Acoustic metamaterial lightweight design method and train low-frequency noise reduction composite floor |
| CN114495884B (en) * | 2022-01-13 | 2023-06-27 | 四川大学 | Lightweight design method for acoustic metamaterial and train low-frequency noise reduction composite floor |
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