CN105895071A - Defect-state structure acoustic metamaterial plate - Google Patents
Defect-state structure acoustic metamaterial plate Download PDFInfo
- Publication number
- CN105895071A CN105895071A CN201610365485.3A CN201610365485A CN105895071A CN 105895071 A CN105895071 A CN 105895071A CN 201610365485 A CN201610365485 A CN 201610365485A CN 105895071 A CN105895071 A CN 105895071A
- Authority
- CN
- China
- Prior art keywords
- acoustic metamaterial
- defect state
- state structural
- defect
- metamaterial board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 claims abstract description 26
- 239000002131 composite material Substances 0.000 claims abstract description 25
- 230000007547 defect Effects 0.000 claims description 39
- 239000007769 metal material Substances 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 229910001385 heavy metal Inorganic materials 0.000 claims description 5
- 229920000459 Nitrile rubber Polymers 0.000 claims description 4
- 230000008034 disappearance Effects 0.000 claims description 4
- 230000000737 periodic effect Effects 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 239000004945 silicone rubber Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 11
- 238000013016 damping Methods 0.000 description 6
- 239000011810 insulating material Substances 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000003190 viscoelastic substance Substances 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/06—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
- B32B3/085—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts spaced apart pieces on the surface of a layer
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses a defect-state structure acoustic metamaterial plate. The defect-state structure acoustic metamaterial plate comprises an elastic film, two composite plates and a plurality of mass sheets; the two composite plates are bonded to the upper side and the lower side of the elastic film respectively; openings which are periodically distributed are formed in the composite plates; the plurality of mass sheets, corresponding to the openings, are arranged on the elastic film; and the mass sheets are of a defect-state structure in distribution. The defect-state structure acoustic metamaterial plate provided by the invention has the advantages of simple structure and excellent design. According to the defect-state structure acoustic metamaterial plate, used basic materials are conventional materials, and therefore, batched processing and production of the defect-state structure acoustic metamaterial plate can be achieved with easiness, and the defect-state structure acoustic metamaterial plate is worth popularizing in the industry.
Description
Technical field
The invention belongs to acoustic metamaterial technical field, be specifically related to a kind of defect state structural acoustic metamaterial board.
Background technology
Vibration also exist widely at nature, and the most vibration sources in real life environments be distributed in 250Hz with
Under low-frequency range, low-frequency vibration in this frequency range and noise are slow due to its energy attenuation, and propagation distance is remote, penetrates energy
The feature that power is strong, it is difficult to control and intercept, all creates the biggest harm to commercial production and human body.In engineering, often use
Sound insulating material and damping material reduce low-frequency vibration and noise.When tradition sound insulating material sound wave to be isolated and vibration, typically need
The gauge wanting sound insulating material parts matches with wave length of sound, if the sound wave of below 100Hz to be isolated, it is necessary to thick
The degree sound insulating material more than 1m, this is in the compact equipment in the inner spaces such as automobile, train, aircraft, it is clear that be unpractical；
Damping material has certain consumption to low-frequency vibration and noise, but along with lightweight, economy, environmental protection etc. require not
Disconnected enhancing, limits stricter to the quality of damping material, and conventional damper material can not meet low frequency vibration damping noise reduction
Demand；Therefore in the urgent need to developing new low frequency vibration damping acoustic damping materials.
Acoustic metamaterial is the novel artificial functional material that a kind of development in recent years is got up, acoustic metamaterial and electromagnetism Meta Materials phase
Correspondence, refers to the artificial sub-wavelength structure with negative equivalent mass density or negative concrete moduli, owing to it has good elasticity
Wavestrip gap and wave-guiding characteristic, shown huge potentiality in low-frequency vibration and field of noise control.On the one hand, acoustics surpasses material
Material can produce " forbidden band " effect to vibrating elastic ripple in low-frequency range, reaches the purpose of isolation vibration；On the other hand,
Defect sturcture in acoustic metamaterial has of a relatively high elastic wave transmission capacity, i.e. forms " waveguide ", it is possible to by major part
Vibrating elastic wave energy guide, frequency dividing to corresponding dynamic vibration absorber, vibration energy regeneration Qi Deng mechanism, thus realize right
The control of low-frequency vibration.As can be seen here, acoustic metamaterial technology to be low-frequency vibration provide one with the control of noise can walking along the street
Footpath.
Summary of the invention
Present invention aim to address the problems referred to above, it is provided that the defect state structural acoustic that a kind of simple in construction, design are good surpasses material
Flitch.
For solving above-mentioned technical problem, the technical scheme is that a kind of defect state structural acoustic metamaterial board, including bullet
Property thin film, two pieces of composite panels and several quality sheets, wherein, two pieces of described composite panels are adhered to elasticity respectively
The upper and lower both sides of thin film, described composite panel is provided with the opening of periodic arrangement, and several described quality sheets are respectively provided with
On the elastic film of opening part, described quality sheet has defect state structure in distribution.
Preferably, described defect state structure includes that quality tablet quality is unequal, quality sheet position eccentric or in quality sheet disappearance
At least one.
Preferably, described opening is circular open, and described circular open is matrix arrangement.
Preferably, generally circular in shape, square, the triangle or irregularly shaped of described quality sheet.
Preferably, described quality sheet thickness is less than composite panel.
Preferably, described quality sheet is made up of heavy metal material.
Preferably, described heavy metal material is ferrum, copper or steel.
Preferably, described elastic film is made up of elasticoviscous property material.
Preferably, described elasticoviscous property material is nitrile rubber, silicone rubber or compounded rubber.
Preferably, described composite panel uses light material to make.
The invention has the beneficial effects as follows: the defect state structural acoustic metamaterial board that the present invention provides, arrange in elastic film both sides
Composite panel, arranges opening on composite panel simultaneously, and the quality sheet being adhered to opening part has defect in overall distribution
State structure so that the present invention can isolate low-frequency vibration and noise in 1000Hz wider acoustics forbidden band formed below, simultaneously can be
Form some waveguides within 1000Hz, the vibrational energy in waveguide frequency is guided to specifying position or direction, by dynamic absorber
Device or vibration energy regeneration Qi Deng mechanism absorb.Further, this acoustic metamaterial plate gross thickness is smaller than 5mm, more
Frivolous, planar dimension can flexible design, system of laying is close with traditional product, sets on automobile, train, aircraft, naval vessel etc.
It is prone in Bei arrange.Generally speaking, present configuration is simple, and design is good, and used basic material is all conventional material,
It is prone to mass processing, produces, be worth popularization in the field of business.
Accompanying drawing explanation
Fig. 1 is the basic unit cell units structural representation of defect state structural acoustic metamaterial board of the present invention；
Fig. 2 is the basic unit cell units structure sectional view of defect state structural acoustic metamaterial board of the present invention；
Fig. 3 is the quality sheet distribution defect state structural representation of defect state structural acoustic metamaterial board of the present invention；
Fig. 4 is the overall structure schematic diagram of defect state structural acoustic metamaterial board of the present invention.
Description of reference numerals: 1, quality sheet；2, composite panel；3, elastic film；4, defect state structure.
Detailed description of the invention
The present invention is described further with specific embodiment below in conjunction with the accompanying drawings:
As Figure 1-4, defect state structural acoustic metamaterial board of the present invention, including elastic film 3, two pieces of composite panels 2
And several quality sheets 1.Two pieces of composite panels 2 are adhered to elastic film about 3 both sides, on composite panel 2 respectively
Being provided with the opening of periodic arrangement, several quality sheets 1 are bonded on the elastic film 3 of opening part respectively, quality sheet 1
There is in distribution defect state structure 4.Defect state structure 4 is the deployment scenarios overall for several quality sheets, including quality
Sheet 1 mass is unequal, quality sheet 1 position is eccentric or at least one in quality sheet 1 disappearance.
It should be noted that the opening of periodic arrangement arranged on composite panel 2, the shape of opening can be circular or
Polygon, the arrangement mode of opening can also determine according to actual needs.Composite panel 2 can be made up of light material.Quality
The shape of sheet 1 can be circular, square, triangle or irregularly shaped, and it is by the bigger heavy metal material system of mass density
Becoming, such as metal materials such as ferrum, steel or copper, thickness is less than composite panel 2.Elastic film 3 is made up of viscoelastic material, as
The materials such as nitrile rubber, silicone rubber or compounded rubber.
Below as a example by the basic structure cell of defect state structural acoustic metamaterial board of the present invention, defect state structural acoustic of the present invention is surpassed
The structure of plate of material is described in further detail, in order to show advantages of the present invention further: as it is shown in figure 1, basic
Structure cell is the minimum unit constituting whole defect state structural acoustic metamaterial board.Structure cell generally square structure, each structure cell
The length of side is 40.Elastic film 3 uses nitrile rubber to make, and thickness is 1.Composite panel 2 uses fiber composite material
Material is made, and thickness is 2, is adhered to elastic film about 3 both sides.Circular open, diameter are set on composite panel 2
Being 30, circular open is matrix arrangement.Quality sheet 1 is round iron plate, diameter 24.5, and thickness 1 is adhered to
On the elastic film 3 of opening part.As shown in Figure 4, aforementioned structure cell is surpassed according to the required defect state structural acoustic that rearranges
Plate of material, wherein the quality sheet 1 of the 6th row the first row unit cell units lacks, the 6th row the third line and fifth line unit cell units
Quality sheet 1 arranged off-centre.This acoustic metamaterial plate shakes transmission function hell 20dB in 100Hz～150Hz, forms acoustics
Forbidden band effect, wherein the 6th is listed in 120Hz and is formed about waveguide.
What deserves to be explained is, in actual applications, can be according to engineering demand, the physical dimension to basic structure cell, unit cell arrangement
Number, forbidden band frequency and bandwidth, waveguide frequency and bandwidth are designed, to reach the purpose of on-demand production.Further,
Quality sheet 1 disappearance being also not necessarily limited in embodiment about the defect state structure 4 of quality sheet 1 distribution and quality sheet 1 eccentric position
Constitute.The quality that can also make some of which quality sheet 1 is compared unequal with other quality sheet 1, or quality piece collection is not
The same material.Specifically arranging of defect state structure 4 can be adjusted according to Practical Project demand.
The defect state structural acoustic metamaterial board that the present invention provides, has good elastic wave band gaps and guided wave in low-frequency range
Characteristic, it is possible to low-frequency vibration elastic wave is produced " forbidden band " effect, reaches the purpose of isolation vibration, and its defect sturcture tool
There is of a relatively high elastic wave transmission capacity, vibrating elastic wave energy can be guided, divide to corresponding dynamic vibration absorber, shake
The mechanisms such as energy withdrawer.This defect state structural acoustic metamaterial board can be used for the equipment such as automobile, train, ships, aircraft
The reduction of medium and low frequency vibration and noise, isolate and control.
Those of ordinary skill in the art is it will be appreciated that embodiment described here is to aid in the reader understanding present invention's
Principle, it should be understood that protection scope of the present invention is not limited to such special statement and embodiment.This area common
It is various specifically that technical staff can make various other without departing from essence of the present invention according to these technology disclosed by the invention enlightenment
Deformation and combination, these deformation and combination are the most within the scope of the present invention.
Claims (10)
1. a defect state structural acoustic metamaterial board, it is characterised in that: include elastic film (3), two pieces of composite panels
(2) and several quality sheets (1), wherein, two pieces of described composite panels (2) are adhered to elastic film (3) respectively
Both sides, described composite panel (2) is provided with the opening of periodic arrangement up and down, several described quality sheets (1) point
Not being arranged on the elastic film (3) of opening part, described quality sheet (1) has defect state structure (4) in distribution.
Defect state structural acoustic metamaterial board the most according to claim 1, it is characterised in that: described defect state structure (4)
, quality sheet (1) position unequal including quality sheet (1) quality be eccentric or at least one in quality sheet (1) disappearance.
Defect state structural acoustic metamaterial board the most according to claim 1, it is characterised in that: described opening is that circle is opened
Mouthful, described circular open is matrix arrangement.
Defect state structural acoustic metamaterial board the most according to claim 1, it is characterised in that: described quality sheet (1)
Generally circular in shape, square, triangle or irregularly shaped.
Defect state structural acoustic metamaterial board the most according to claim 1, it is characterised in that: described quality sheet (1)
Thickness is less than composite panel (2).
Defect state structural acoustic metamaterial board the most according to claim 1, it is characterised in that: described quality sheet (1)
It is made up of heavy metal material.
Defect state structural acoustic metamaterial board the most according to claim 6, it is characterised in that: described heavy metal material is
Ferrum, copper or steel.
8. according to the arbitrary described defect state structural acoustic metamaterial board of claim 1～6, it is characterised in that: described Thin Elastic
Film (3) is made up of elasticoviscous property material.
Defect state structural acoustic metamaterial board the most according to claim 8, it is characterised in that: described elasticoviscous property material is
Nitrile rubber, silicone rubber or compounded rubber.
10. according to the defect state structural acoustic metamaterial board described in claim 1-6, it is characterised in that: described composite panel
(2) light material is used to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610365485.3A CN105895071A (en) | 2016-05-27 | 2016-05-27 | Defect-state structure acoustic metamaterial plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610365485.3A CN105895071A (en) | 2016-05-27 | 2016-05-27 | Defect-state structure acoustic metamaterial plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105895071A true CN105895071A (en) | 2016-08-24 |
Family
ID=56708891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610365485.3A Pending CN105895071A (en) | 2016-05-27 | 2016-05-27 | Defect-state structure acoustic metamaterial plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105895071A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884920A (en) * | 2017-03-14 | 2017-06-23 | 西北工业大学 | One kind can attach the miniature compound dynamic vibration absorber of installation |
| CN113823254A (en) * | 2021-10-28 | 2021-12-21 | 深圳清华大学研究院 | Non-uniform mass and asymmetrically distributed film type low-frequency sound insulation acoustic metamaterial |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1224772A (en) * | 1998-01-24 | 1999-08-04 | 西南交通大学 | Synthesis of carbon-base film |
| WO2004012931A2 (en) * | 2002-08-02 | 2004-02-12 | Cta Acoustics, Inc. | Acoustical insulation laminate with polyolefin layer and process for making |
| CN102938251A (en) * | 2012-11-16 | 2013-02-20 | 广东工业大学 | Two defect-state-acquired two-dimensional phononic crystal structures |
| CN105118496A (en) * | 2015-09-11 | 2015-12-02 | 黄礼范 | Acoustic meta-material basic structure unit, composite structure thereof, and assembly method |
| CN105304076A (en) * | 2015-11-20 | 2016-02-03 | 中国船舶重工集团公司第七一六研究所 | Two-dimension acoustic meta-material selectively absorbing mechanical wave and preparation method thereof |
-
2016
- 2016-05-27 CN CN201610365485.3A patent/CN105895071A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1224772A (en) * | 1998-01-24 | 1999-08-04 | 西南交通大学 | Synthesis of carbon-base film |
| WO2004012931A2 (en) * | 2002-08-02 | 2004-02-12 | Cta Acoustics, Inc. | Acoustical insulation laminate with polyolefin layer and process for making |
| CN102938251A (en) * | 2012-11-16 | 2013-02-20 | 广东工业大学 | Two defect-state-acquired two-dimensional phononic crystal structures |
| CN105118496A (en) * | 2015-09-11 | 2015-12-02 | 黄礼范 | Acoustic meta-material basic structure unit, composite structure thereof, and assembly method |
| CN105304076A (en) * | 2015-11-20 | 2016-02-03 | 中国船舶重工集团公司第七一六研究所 | Two-dimension acoustic meta-material selectively absorbing mechanical wave and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884920A (en) * | 2017-03-14 | 2017-06-23 | 西北工业大学 | One kind can attach the miniature compound dynamic vibration absorber of installation |
| CN106884920B (en) * | 2017-03-14 | 2019-09-24 | 西北工业大学 | One kind can attach the miniature compound dynamic vibration absorber of installation |
| CN113823254A (en) * | 2021-10-28 | 2021-12-21 | 深圳清华大学研究院 | Non-uniform mass and asymmetrically distributed film type low-frequency sound insulation acoustic metamaterial |
| CN113823254B (en) * | 2021-10-28 | 2023-10-31 | 深圳清华大学研究院 | Film type low-frequency sound insulation acoustic metamaterial with non-uniform quality and asymmetric distribution |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160824 |
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