CN111369962A - Double-layer plate sound insulation device with built-in film type acoustic metamaterial - Google Patents
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- 230000001808 coupling effect Effects 0.000 claims abstract description 3
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- 239000010408 film Substances 0.000 claims description 79
- 239000010409 thin film Substances 0.000 claims description 25
- 239000007769 metal material Substances 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 229910052755 nonmetal Inorganic materials 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 4
- 239000011120 plywood Substances 0.000 claims 2
- 230000008859 change Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
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- 239000011358 absorbing material Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
- G10K11/168—Plural layers of different materials, e.g. sandwiches
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
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Abstract
The invention relates to the technical field of noise control, in particular to a double-layer plate sound insulation device with a built-in film type acoustic metamaterial. According to the invention, the film type acoustic metamaterial is fixed between the double-layer plates, and the sound insulation performance of the double-layer plates is improved through the acoustic coupling effect of the double-layer plates and the film type acoustic metamaterial, and meanwhile, a sound insulation peak value appears in the sound insulation valley range of the double-layer plates, so that the sound insulation effect of the double-layer plates is obviously improved.
Description
Technical Field
The invention relates to the technical field of noise control, in particular to a double-layer plate sound insulation device with a built-in film type acoustic metamaterial.
Technical Field
In recent 30 years, with the rapid development of national high-speed trains, aerospace, automobiles and the like, the noise problem restricts the development of each field on one hand, and also disturbs the normal work and life of people on the other hand. In order to reduce the influence of low-frequency noise on the normal life of people and enhance the universality of the structure facing different acoustic environments, some sound insulation structures, in particular light sheet structures, are widely applied to the fields of buildings, automobiles, ships, aviation, space navigation and the like. Most of the existing structures are double-layer plate structures, and have inherent sound insulation valleys. In order to improve the sound insulation defect of the double-layer plate, the existing method mostly adopts filling damping materials and sound absorption materials to attenuate sound waves, but the method cannot structurally break through the design of the double-layer plate, is only limited to improve the sound insulation valley of the double-layer plate by a certain amount, cannot meet the design requirement, and particularly needs to vigorously develop a new theory, a new method and a new technology for structural vibration and noise reduction under the national strategic development requirement of 'comprehensively improving the technical level of important equipment' in China at present.
The acoustic metamaterial is a composite material consisting of periodic sub-wavelength structures with negative equivalent characteristics, and large wavelength can be controlled through small size. Since the 21 st century, researchers developed many models of acoustic metamaterials and proposed new solutions for low frequency noise control. In 2000, Liu Zheng 29495for the first time proposes a local resonance type acoustic metamaterial, realizes the small-size control of large wavelength, realizes the effective control of low-frequency noise by using a millimeter-sized material, and breaks through the law of quality; in 2018, anecdotal people and others have invented an acoustic metamaterial in the form of a magnetorheological thin film center additional mass block structure, and the input current of an external additional radial magnetic field loading device can be adjusted to change the acting force of a radial magnetic field on a magnetorheological thin film so as to realize effective control on the frequency corresponding to a sound insulation peak value. (patent application number 201811083083.X)
The film type acoustic metamaterial has attracted wide attention due to the light weight and the better low-frequency sound insulation performance. The film type acoustic metamaterial overcomes the defect that the traditional linear sound insulation material can deal with the low-frequency noise problem, and shows good low-frequency noise reduction performance. The film type acoustic metamaterial based on the structure local resonance principle has become a main development trend of the metamaterial applied to the field of low-frequency noise.
The existing method for improving the sound insulation performance of the double-layer plate structure is single, mostly adds damping materials and sound-absorbing materials in the cavity of the double-layer plate, and mainly has the following three defects:
(1) the sound insulation quantity of the structure is simply improved, and the sound insulation characteristic of the double-layer plate is not improved;
(2) the types of materials added into the cavity are relatively single, and most of the materials are porous sound-absorbing materials;
(3) it is difficult to completely compensate for the valley of the sound insulation curve of the double-layer plate.
Disclosure of Invention
The invention provides a double-layer plate sound insulation device with a built-in film type acoustic metamaterial.
The technical scheme of the invention is as follows: the sound insulation device is composed of a film type acoustic metamaterial and a double-layer plate, and is characterized in that: the film type acoustic metamaterial is fixed in the cavity of the double-layer plate.
The technical scheme of the invention is as follows: the double-layer plate is composed of an upper plate, a lower plate and a sleeve, and is characterized in that: the upper plate is fixed on the top end of the sleeve, and the lower plate is fixed on the bottom end of the sleeve.
The technical scheme of the invention is as follows: the axial distance between the upper plate and the lower plate and the thickness of the upper plate and the lower plate can change the frequency of the sound insulation valley value of the double-layer plate.
The technical scheme of the invention is as follows: the upper plate and the lower plate are made of metal materials including iron and aluminum or non-metal materials including wood and plastic.
The technical scheme of the invention is as follows: when the upper layer plate and the lower layer plate are made of metal materials, the thickness of the upper layer plate and the lower layer plate is between 1mm and 3 mm; when the upper plate and the lower plate are made of non-metallic materials, the thickness of the upper plate and the lower plate is between 3mm and 10 mm.
The technical scheme of the invention is as follows: when the upper plate and the lower plate are made of metal materials, the distance between the upper plate and the lower plate can be changed between 10mm and 30 mm; when the upper plate and the lower plate are made of non-metal materials, the distance between the upper plate and the lower plate can be changed between 40mm and 100 mm.
The technical scheme of the invention is as follows: the sleeve is made of metal materials including iron and aluminum or non-metal materials including wood and plastic. The material of the sleeve should be identical to the material of the upper and lower sheets.
The technical scheme of the invention is as follows: the thickness of the sleeve is 1mm-2 mm.
The technical scheme of the invention is as follows: the cross section of the sleeve is the same as that of the upper plate, the lower plate, the film and the frame.
The technical scheme of the invention is as follows: the height of the sleeve is equal to the distance between the upper plate and the lower plate.
The technical scheme of the film type acoustic metamaterial is as follows: the film type acoustic metamaterial consists of a film, a mass block and a frame; wherein, the frame is divided into an upper frame and a lower frame. And the mass block is fixed at the center of the film by glue, the film is clamped by the upper frame and the lower frame, and the film is fixed by the glue to prepare the film type acoustic metamaterial.
The technical scheme of the film type acoustic metamaterial is as follows: the film is made of silicon rubber, and the thickness of the film is between 0.2mm and 1 mm.
The technical scheme of the film type acoustic metamaterial is as follows: the mass block is made of lead and has a mass of 150-2280 g.
The technical scheme of the film type acoustic metamaterial is as follows: the frame is made of aluminum or other light materials; the thickness of the frame is 2mm, and the height is 3mm-6 mm.
A double-layer plate sound-insulating device with a built-in thin film type acoustic metamaterial comprises the following technical scheme: the upper layer plate is fixed at the top end of the sleeve, the manufactured film type acoustic metamaterial is placed into the sleeve, the outer wall of the frame is fixed on the inner wall of the sleeve, and finally the lower layer plate is fixed at the bottom end of the sleeve to manufacture the whole double-layer plate sound insulation device with the built-in film type acoustic metamaterial. And ensuring that the thin film type acoustic metamaterial is concentric with the upper plate and the lower plate.
The technical scheme of the invention is as follows: the position of the film type acoustic metamaterial in the cavity of the double-layer plate can move axially and parallelly.
The technical scheme of the invention is as follows: the upper plate and the lower plate are adhered to two ends of the sleeve by glue.
In the above scheme, the double-layer plate has a sound insulation valley in a low frequency band, and the valley frequency changes with the plate thickness of the upper plate and the lower plate and the distance between the two plates, specifically as shown in fig. 6, the sound insulation valley frequency decreases with the increase of the plate thickness; as shown in fig. 7, the sound insulation valley frequency decreases as the board pitch increases.
In the scheme, the cross sections of the upper plate, the lower plate, the sleeve, the frame and the film are the same and are circular or other polygonal shapes.
In the above scheme, the film-type acoustic metamaterial has a sound insulation peak value at a low frequency band, and the peak frequency changes with the change of the film thickness and the mass of the mass block, specifically as shown in fig. 4, the sound insulation peak frequency increases with the increase of the film thickness; as shown in fig. 5, the peak frequency of sound insulation decreases as the mass of the mass increases. The variation of the mass is represented in fig. 5 by varying the height h of the mass.
A technical scheme of a double-layer plate sound-insulating device with a built-in thin film type acoustic metamaterial is as follows: the sound insulation peak value of the film type acoustic metamaterial can be adjusted by changing the thickness of the film and the mass of the mass block, and the sound insulation valley value of the double-layer plate can be adjusted by changing the thicknesses of the upper plate and the lower plate and the distance between the two plates; through adjusting parameters, the sound insulation valley frequency of the double-layer plate is the same as the sound insulation peak frequency of the film type acoustic metamaterial, the sound insulation performance of the double-layer plate is improved through the acoustic coupling effect of the double-layer plate and the film type acoustic metamaterial, and a sound insulation peak value appears in the valley range, so that the sound insulation effect of the double-layer plate is obviously improved.
In the scheme, the sound insulation valley frequency of the double-layer plate can be independently adjusted, the sound insulation peak frequency of the film type acoustic metamaterial can also be independently adjusted, and the purpose of improving the sound insulation valley of the double-layer plate can be realized as long as the corresponding parameters of the double-layer plate and the film type acoustic metamaterial are adjusted to enable the sound insulation valley of the double-layer plate to correspond to the sound insulation peak of the film type acoustic metamaterial.
The invention has the following advantages:
1. the acoustic properties of the double-layer plate are structurally changed, and a sound insulation peak value appears in the sound insulation valley range of the double-layer plate.
2. The whole sound insulation of the double-layer plate is improved.
3. The acoustic parameters of the double-layer plate and the film type acoustic metamaterial can be independently adjusted.
Drawings
FIG. 1 is a schematic overall structure diagram of a double-layer plate sound-insulating device with a built-in thin film type acoustic metamaterial;
FIG. 2 is a structural diagram of a thin film type acoustic metamaterial;
FIG. 3 is a schematic view of a double-layer plate structure;
FIG. 4 is a sound insulation curve of a thin film type acoustic metamaterial with different thin film thicknesses;
FIG. 5 is a sound insulation curve of the thin film type acoustic metamaterial with different size mass blocks;
FIG. 6 is a curve of sound insulation performance of double-layer boards with different board thicknesses;
FIG. 7 is a curve of sound insulation performance of double-layer boards with different board spacings;
FIG. 8 is a sound insulation curve of a double-layer plate sound insulation device with a built-in thin film type acoustic metamaterial;
FIG. 9 is a sound insulation curve of a three-layer plate sound insulation device with a built-in thin film type acoustic metamaterial;
FIG. 10 is a schematic overall structure diagram of a three-layer plate sound insulation device with a built-in thin film type acoustic metamaterial;
FIG. 11 is a schematic overall structure diagram of a quadrilateral double-plate sound-insulating device with a built-in thin-film type acoustic metamaterial;
a description of the reference numerals; 1-upper layer plate; 2-lower layer plate; 3-a frame; 4-a film; 5-a mass block; 6-sleeve.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
The frame of the double-layer plate sound insulation device with the built-in film type acoustic metamaterial is circular, the outer radius of the frame is 15mm-20mm, the inner radius of the frame is 10mm-15mm, and the height of the frame is 4 mm; the radius of the film is 13mm-17mm, and the thickness of the film is 0.2mm-1 mm; the mass block is in a cylindrical shape, the radius of the mass block is 3mm-5mm, the height of the mass block is 1.5mm-4.5mm, and the mass of the mass block is 150g-2280 g; the size and the shape of the upper plate and the lower plate are the same and are circular, the upper plate and the lower plate are made of iron, the radius is 15mm-20mm, the thickness is 1mm-3mm, and the distance between the two plates is 10mm-30 mm. The sleeve is in a cylindrical thin-wall shape, the thickness of the thin wall is 1mm-2mm, the inner radius is equal to the outer radius of the frame, and the height is equal to the distance between the upper layer plate and the lower layer plate. Wherein, during the size selection, the radius of the film is ensured to be larger than the inner radius of the frame and smaller than the outer radius of the frame; the radius of the upper layer plate and the lower layer plate is equal to the outer radius of the sleeve; the inner radius of the sleeve is equal to the outer radius of the frame.
The membrane in this embodiment is made of silicone rubber; the mass block is made of lead; the frame is made of aluminum; the upper plate, the lower plate and the sleeve are made of iron. The specific material parameters are as follows: aluminum [ density rho is 2700kg/m3(ii) a Elastic modulus E ═ 7E10 Pa; poisson ratio v is 0.33](ii) a Iron [ Density rho 7900kg/m3(ii) a Elastic modulus E2.12E 10 Pa; poisson ratio v is 0.31](ii) a Silicone rubber [ Density rho 970 kg/m%3(ii) a Elastic modulus E6 Pa; poisson ratio v is 0.47](ii) a Lead [ density rho 11680kg/m3(ii) a Elastic modulus E2E 10 Pa; poisson ratio v is 0.42]；
The embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
Specific implementation 1:
the first step is as follows: the mass block is fixed at the center of the film by glue;
the second step is that: fixing the film by a frame to prepare a film type acoustic metamaterial, as shown in FIG. 2;
the third step: the upper plate is fixed at the top end of the sleeve;
the fourth step: placing the prepared film type acoustic metamaterial into a sleeve, and fixing the outer wall of the frame on the inner wall of the sleeve;
the fifth step: and (3) fixing the lower plate at the bottom end of the sleeve to ensure that the film type acoustic metamaterial is concentric with the upper plate and the lower plate, and manufacturing a double-layer plate sound-insulating device structure model with the built-in film type acoustic metamaterial, as shown in fig. 1.
Specific implementation 2:
the first step is as follows: the mass block is fixed at the center of the quadrilateral film by glue;
the second step is that: fixing a film by using a quadrilateral frame to prepare a film type acoustic metamaterial;
the third step: fixing the quadrangular upper layer plate at the top end of the sleeve;
the fourth step: placing the prepared film type acoustic metamaterial into a sleeve, and fixing the outer wall of the quadrilateral frame on the inner wall of the sleeve;
the fifth step: fixing the quadrilateral lower plate at the bottom end of the sleeve to ensure that the film type acoustic metamaterial is concentric with the upper plate and the lower plate, and manufacturing a quadrilateral double-layer plate sound insulation device structure model with the built-in film type acoustic metamaterial, as shown in fig. 11.
The sections of the upper plate, the lower plate, the sleeve, the film and the frame in the specific embodiment 2 are all square, and the geometric side length is 14 mm; the thickness of the upper layer plate and the lower layer plate is 2mm, and the distance between the plates is 10 mm; the mass block is a cylinder, the radius is 3mm-5mm, and the height is 1.5mm-4.5 mm; the height of the frame is 3mm-6mm, and the thickness is 2 mm.
The acoustic characteristics of the sound insulator with the built-in thin film type acoustic metamaterial according to embodiment 1 are calculated by simulation using COMSOL multiphysics5.4, and as a result, as shown in fig. 8, it can be seen from the solid line in the figure that a sound insulation peak appears in the sound insulation valley range of the double-layer plate, and the sound insulation performance of the double-layer plate is improved.
The structure of the concrete example 1 can be further expanded to a three-layer plate, the acoustic characteristics of the three-layer plate with the built-in thin film type acoustic metamaterial are simulated by COMSOL multiphysics5.4, the overall structure is shown in FIG. 10, the simulation result is shown in FIG. 9, and a sound insulation peak value appears in the sound insulation valley range of the three-layer plate and the sound insulation performance of the three-layer plate is improved as can be seen from a solid line in the figure.
In the examples, for the double-layer board, the distance between the upper layer board and the lower layer board is kept unchanged, the thickness of the upper layer board and the lower layer board is changed, the sound insulation quantity of the double-layer board is changed along with the change of the frequency, and the sound insulation valley frequency of the double-layer board is reduced along with the increase of the thickness of the double-layer board as shown in figure 6.
In the examples, for the double-layer plate, the thickness of the upper plate and the lower plate is kept constant, the distance between the upper plate and the lower plate is changed, the sound insulation quantity of the double-layer plate is changed along with the change of the frequency, and the sound insulation valley frequency of the double-layer plate is reduced along with the increase of the distance between the double-layer plate and the lower plate, as shown in fig. 7.
In the examples, for the film-type acoustic metamaterial, the thickness and size of the film are kept unchanged, the mass of the mass block is changed (the radius of the mass block is kept unchanged during numerical calculation, and the height of the mass block is changed), the relation curve of the sound insulation quantity with frequency change is shown in fig. 5, and the sound insulation peak frequency is reduced with the mass of the mass block.
In the embodiment, for the film type acoustic metamaterial, the mass of the mass block is kept unchanged, the thickness of the film is changed, the relation curve of the sound insulation quantity of the film with the change of the frequency is shown in fig. 4, and the sound insulation peak frequency of the film is improved with the increase of the thickness of the film.
In the embodiment, according to the above description, it can be known that by changing the relevant parameters of the double-layer plate and the thin-film type acoustic metamaterial, the sound insulation peak value of the thin-film type acoustic metamaterial can be independently adjusted to be consistent with the sound insulation valley value of the double-layer plate, so that the sound insulation characteristic shown in fig. 8 can be achieved, the sound insulation valley value is improved, and meanwhile, a sound insulation peak value appears in the sound insulation valley value range of the double-layer plate.
In the embodiment, the upper plate and the lower plate are not limited to circular plates, but may be plate structures of other geometric shapes.
According to the characteristics of the invention, the sound insulation device can be applied to the aspects of sound insulation design of vehicles, sound insulation design in the field of buildings and the like, improves the living environment of people, and has good engineering application prospect particularly in the aspect of low frequency.
The above-described preferred embodiments are not intended to be taken as the full scope of the present invention, and any obvious improvements, substitutions or modifications based on the double-layer plate sound-insulating device with a built-in thin film type acoustic metamaterial according to the present invention are within the scope of the present invention.
Claims (8)
1. The utility model provides a double-deck board noise insulation of built-in film type acoustics metamaterial, includes double-deck board and film type acoustics metamaterial, double-deck board constitute by upper plate, lower plywood and sleeve, the upper plate is fixed in telescopic top, lower plywood is fixed in telescopic bottom, its characterized in that: the film-type acoustic metamaterial is fixed in the cavity of the double-layer plate, the frequency of the sound insulation peak value of the film-type acoustic metamaterial can be adjusted by changing the film thickness of the film-type acoustic metamaterial and the mass of the mass block, and the frequency of the sound insulation valley value of the double-layer plate can be adjusted by changing the plate thicknesses of the upper layer plate and the lower layer plate and the distance between the two plates; through adjusting parameters, the sound insulation valley frequency of the double-layer plate is the same as the sound insulation peak frequency of the film type acoustic metamaterial, the sound insulation performance of the double-layer plate is improved through the acoustic coupling effect of the double-layer plate and the film type acoustic metamaterial, and a sound insulation peak value appears in the valley range, so that the sound insulation effect of the double-layer plate is obviously improved.
2. The double-layer plate sound-insulating device with the built-in thin film type acoustic metamaterial according to claim 1, wherein: the upper plate and the lower plate are made of metal materials including iron and aluminum or non-metal materials including wood and plastic; when the upper layer plate and the lower layer plate are made of metal materials, the thickness of the upper layer plate and the lower layer plate is between 1mm and 3 mm; when the upper plate and the lower plate are made of non-metallic materials, the thickness of the upper plate and the lower plate is between 3mm and 10 mm; when the upper plate and the lower plate are made of metal materials, the distance between the upper plate and the lower plate is changed between 10mm and 30 mm; when the upper plate and the lower plate are made of non-metal materials, the distance between the upper plate and the lower plate is changed between 40mm and 100 mm.
3. The double-layer plate sound-insulating device with the built-in thin film type acoustic metamaterial according to claim 1, wherein: the sleeve is made of metal materials including iron, aluminum and the like or non-metal materials including wood, plastic and the like, and the material of the sleeve is consistent with that of the upper plate and the lower plate; the thickness of the sleeve can be 1mm-2 mm; the section shape of the sleeve is the same as that of the upper plate, the lower plate and the film and the frame of the film type acoustic metamaterial; the height of the sleeve is equal to the distance between the upper plate and the lower plate.
4. A double-deck plate sound-insulating device of built-in thin film type acoustic metamaterial according to claim 3, wherein: the cross sections of the upper plate, the lower plate, the sleeve, the frame and the film are the same and are circular or other polygonal shapes.
5. The double-layer plate sound-insulating device with the built-in thin film type acoustic metamaterial according to claim 1, wherein: the film type acoustic metamaterial is concentric with the upper layer plate and the lower layer plate, and can axially move in parallel in the cavity of the double layer plate; the film type acoustic metamaterial is composed of a film, a mass block and a frame; wherein, the frame is divided into an upper frame and a lower frame; and the mass block is fixed at the center of the film by glue, the film is clamped by the upper frame and the lower frame, and the film is fixed by the glue to prepare the film type acoustic metamaterial.
6. The double-layer plate sound-insulating device with the built-in thin film type acoustic metamaterial according to claim 5, wherein: the film is made of silicon rubber, and the thickness of the film is between 0.2mm and 1 mm; the mass block is made of lead, and the mass of the mass block is 150-2280 g; the frame is made of light materials including aluminum, the thickness of the frame is 2mm, and the height of the frame is 3mm-6 mm.
7. The double-layer plate sound-insulating device with the built-in thin film type acoustic metamaterial according to claim 1, wherein: the upper plate and the lower plate are adhered to two ends of the sleeve by glue.
8. The double-layer plate sound-insulating device with the built-in thin film type acoustic metamaterial according to claim 1, wherein: the sound insulation valley frequency of the double-layer plate can be independently adjusted, the sound insulation peak frequency of the film type acoustic metamaterial can also be independently adjusted, and the purpose of improving the sound insulation valley of the double-layer plate can be achieved as long as the corresponding parameters of the double-layer plate and the film type acoustic metamaterial are adjusted to enable the sound insulation valley of the double-layer plate to correspond to the sound insulation peak of the film type acoustic metamaterial.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113365195A (en) * | 2021-05-24 | 2021-09-07 | 重庆邮电大学 | Low-frequency narrow-band sound wave generating device for measuring working fluid level of oil well |
| CN113409753A (en) * | 2021-05-19 | 2021-09-17 | 华南理工大学 | Multilayer film type acoustic metamaterial structure and design method thereof |
| CN114197668A (en) * | 2021-12-29 | 2022-03-18 | 哈尔滨工程大学 | Periodic film building sound absorption and insulation superstructure |
| CN114802043A (en) * | 2022-06-27 | 2022-07-29 | 质子汽车科技有限公司 | Vehicle cab and vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106782477A (en) * | 2016-12-16 | 2017-05-31 | 江苏大学 | A kind of Helmholtz chambers acoustic metamaterial with membrane structure |
| WO2017160364A1 (en) * | 2016-03-14 | 2017-09-21 | Acoustic Metameterials, Inc. | Acoustic metamaterial noise control method and apparatus for ducted systems |
| US20190035373A1 (en) * | 2015-09-11 | 2019-01-31 | Component Technologies, L.L.C. | Acoustic meta-material basic structure unit, composite structure thereof, and assembly method |
| CN109671420A (en) * | 2018-11-27 | 2019-04-23 | 江苏大学 | A kind of film-type active acoustical Meta Materials coupled admittedly based on magnetic |
| CN109741726A (en) * | 2018-12-27 | 2019-05-10 | 西安交通大学 | A kind of super surface apparatus of collaboration coupled double-layer sheet-type acoustics |
-
2020
- 2020-02-02 CN CN202010077998.0A patent/CN111369962A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190035373A1 (en) * | 2015-09-11 | 2019-01-31 | Component Technologies, L.L.C. | Acoustic meta-material basic structure unit, composite structure thereof, and assembly method |
| WO2017160364A1 (en) * | 2016-03-14 | 2017-09-21 | Acoustic Metameterials, Inc. | Acoustic metamaterial noise control method and apparatus for ducted systems |
| CN106782477A (en) * | 2016-12-16 | 2017-05-31 | 江苏大学 | A kind of Helmholtz chambers acoustic metamaterial with membrane structure |
| CN109671420A (en) * | 2018-11-27 | 2019-04-23 | 江苏大学 | A kind of film-type active acoustical Meta Materials coupled admittedly based on magnetic |
| CN109741726A (en) * | 2018-12-27 | 2019-05-10 | 西安交通大学 | A kind of super surface apparatus of collaboration coupled double-layer sheet-type acoustics |
Cited By (7)
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| CN113409753A (en) * | 2021-05-19 | 2021-09-17 | 华南理工大学 | Multilayer film type acoustic metamaterial structure and design method thereof |
| CN113409753B (en) * | 2021-05-19 | 2023-12-15 | 华南理工大学 | Multilayer film type acoustic metamaterial structure and design method thereof |
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