CN109616092A - Metamaterial type light structure with low-frequency vibration and noise reduction and sound insulation functions - Google Patents
Metamaterial type light structure with low-frequency vibration and noise reduction and sound insulation functions Download PDFInfo
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- CN109616092A CN109616092A CN201910066479.1A CN201910066479A CN109616092A CN 109616092 A CN109616092 A CN 109616092A CN 201910066479 A CN201910066479 A CN 201910066479A CN 109616092 A CN109616092 A CN 109616092A
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- oscillator
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- support
- sound insulation
- noise reduction
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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
Abstract
The invention belongs to the field of vibration and noise control, and discloses a metamaterial light structure with low-frequency vibration and noise reduction and insulation functions, which comprises a base structure 1, a vibrator mass block 2a, a vibrator beam piece 2b, a supporting structure 2c and a vibrator unit 2, wherein the vibrator mass block 2a and the supporting structure 2c are respectively connected with the vibrator beam piece 2b to form the vibrator unit 2, and the vibrator unit 2 is periodically or approximately periodically arranged on the base structure 1 along the transverse direction and the longitudinal direction. Through the structure, the material and the arrangement of the reasonable adjustment oscillator unit, the suppression effect (vibration reduction and noise reduction) of the plate shell structure to low-frequency vibration and radiation noise can be effectively improved, the transmission noise suppression effect (sound insulation) of the structure can be obviously enhanced, the vibration and noise environment of equipment can be further improved, and the use performance and the comfort of the equipment are improved.
Description
Technical field
The present invention relates to vibration and noise control fields, more particularly to the super material with low frequency vibration damping noise reduction and sound insulation function
Material type light structures.
Background technique
As Technology for Modern Equipment increasingly develops to large size, lightweight, heavy duty, high speed direction, the vibration and noise problem faced
Become increasingly conspicuous (vibration and noise magnitude is excessively high).The vibration and noise magnitude of equipment is excessively high, can be greatly reduced its service performance and
Comfort, or even influence the safety or even complete machine quality of equipment.Plate and shell structure is the primary structure for constituting equipment, and is caused
Equip the main source of vibration and noise problem；Vibration and noise reducing design must be carried out to the plate and shell structure of equipment in engineering, that is, mention
High plate and shell structure is vibrated and is made an uproar so as to improve equipment to the rejection ability of low-frequency vibration and noise (radiated noise and transmission noise)
Acoustic environment improves the service performance and comfort of equipment.
Common plate and shell structure mainly has homogeneous plate, stiffened panel, perforated foams sandwich plate, honeycomb interlayer in equipment
Plate, porous lattice structure battenboard etc., in order to reduce the vibratory response of these plate and shell structures, inhibit its noise radiation, improve it
Sound insulation (inhibit noise transmission) performance, the traditional technology measure of use generally include: modification structural parameters, increase plate thickness of the shell,
Damping layer is sticked, but is limited by structure design space, quality requirements, these traditional measures are difficult to realize the height of low-frequency range
Imitate vibration damping, noise reduction and sound insulation effect.
In recent years, the proposition of " acoustic metamaterial " new concept provides new skill for the low-frequency vibration of structure and noise control
Art means and approach.Acoustic metamaterial refer to by special designing artificial acoustics microstructure unit (such as locally resonant subelement, or
Abbreviation oscillator) the novel acoustic material that is constituted in elastic fluid of periodic arrangement or structure, nature material can be obtained and do not had
Extraordinary physical characteristic (such as negative mass density, negative refraction, negative norm amount), the extraordinary behaviour to low-frequency elastic wave and sound wave may be implemented
Control, and then generate excellent effect of vibration and noise reduction.Existing document preliminary studies have shown that, use for reference acoustic metamaterial design philosophy,
Period arrangement oscillator unit, can make these structures generate the extraordinary object for being similar to acoustic metamaterial on simple beam, hardened structure
Characteristic is managed, realizes the extraordinary manipulation to low-frequency elastic wave and sound wave.Acoustic metamaterial design philosophy is introduced into reality by the present invention
Plate and shell structure in engineering breaks traditional design based on the innovative design method of additional cycle arrangement particular configuration oscillator unit
Limitation, the low frequency vibration damping, noise reduction and sound insulation effect of Technology for Modern Equipment is substantially improved.
In conclusion the problem of vibration and noise reducing and sound insulation of equipment are vibration and noise reducing field extensive concerns.Because being equipped
The limitation such as structure design space, quality requirements only with modification structural parameters, increases plate thickness of the shell and to stick damping layer etc. traditional
Noise reduction technology measure, it is difficult to realize the vibration and noise reducing and sound insulation effect of low-frequency range.Therefore it is directed to the equipment vibration damping of low-frequency range
Noise reduction and sound insulation, are the technical issues of those skilled in the art extremely pay close attention to, and the prior art does not disclose proposed in the present invention
For equipping the Meta Materials type light structures of low frequency vibration damping noise reduction and sound insulation.
Summary of the invention
The purpose of the present invention is to solve the deficiency in above-mentioned background technique, provide with low frequency vibration damping noise reduction and sound insulation
The Meta Materials type light structures of function, both had good vibration damping, anti-acoustic capability (low-frequency vibration of efficient suppressing plate shell and its
Caused radiated noise), and there is good sound insulation property (the transmission noise of efficient suppressing plate shell), and structure size is small.
In order to achieve the above object, the technical solution adopted by the present invention is that:
Meta Materials type light structures with low frequency vibration damping noise reduction and sound insulation function, the Meta Materials type light structures include
Base structure 1, oscillator mass block 2a, oscillator beam piece 2b, support construction 2c, oscillator unit 2, oscillator mass block 2a, support construction
2c together constitutes with oscillator unit 2 after being connected respectively with oscillator beam piece 2b, and oscillator unit 2 transversely with the longitudinal direction period
Property approximately periodic is arranged in base structure 1.
Further, the structure type of described matrix structure 1 can for homogeneous plate, stiffened panel, perforated foams sandwich plate,
The plate and shell structures such as honeycomb sandwich panel, porous lattice structure battenboard can also be grid or truss structure；The oscillator mass block 2a
It can be rectangular sheets beam piece for the solid-liquid structure after filling liquid in solid structure or airtight solid cavity, oscillator beam piece 2b.
Further, the support construction 2c mainly plays a part of to support oscillator beam piece 2b, and support construction 2c is to oscillator beam
The supporting way of piece 2b can be midfoot support or close to midfoot support, and oscillator mass block 2a is placed in inclined on oscillator beam piece 2b at this time
At Support Position；Support construction 2c can also be both ends support or support close to both ends, oscillator mass block 2a at this time
In on oscillator beam piece 2b deviate Support Position at.
Further, the structure type of the support construction 2c can be independent column structure, and cross-sectional shape can
For circle, rectangle, circular ring shape, triangle；The structure type of support construction 2c can also for oscillator beam piece 2b itself by bending,
The minor structure form with support function of the locally-shaped composition such as punching press, metal plate.
Further, the oscillator unit 2 can be simple oscialltor form, or discrete distribution stacks the more of parallel connection
Oscillator form；Multiple oscillator units 2 are disposed in described matrix structure 1, the position of oscillator unit 2 can be arranged in base structure
At 1 upper surface or lower surface, it can also be arranged at the hole location inside base structure 1；The arrangement form of oscillator unit 2
It can be periodic, or approximately periodic.
Further, between the oscillator beam piece 2b and oscillator mass block 2a, support construction 2c and base structure 1, oscillator
Riveting, welding, cementing or be bolted and be fixed can be used between unit 2.
Further, the oscillator beam piece 2b, support construction 2c can by the metal materials such as steel, aluminium, copper or organic glass,
The nonmetallic materials such as PVC, timber or composite material, laminate are made, the oscillator mass block 2a can by steel, copper, stone material,
Magnet, organic glass or composite material, laminate are made.
The present invention has the following technical effect that control of the present invention for the vibration and noise of plate and shell structure, by reasonable
Structure, material and the arrangement for adjusting oscillator unit, can effectively improve inhibition of the plate and shell structure to low-frequency vibration and radiated noise
Effect (improves vibration damping, anti-acoustic capability under mechanical force excitation), and can significantly increase the transmission noise suppression effect of structure
(being lifted at the sound insulation room performance under acoustic wave excitation), and structure size is small, thus the vibration of equipment can be effectively improved
With noise circumstance, the service performance and comfort of equipment are improved.
Detailed description of the invention
Fig. 1 is the schematic diagram of the Meta Materials type light structures with low frequency vibration damping noise reduction and sound insulation function of the invention；
Fig. 2 is six kinds of representative configurations schematic diagrames of base structure in the present invention；
Fig. 3 is support construction representative form and supporting way schematic diagram in the present invention；
Fig. 4 is four kinds of representative cross-sectional form schematic diagrames of support construction in the present invention；
Fig. 5 is two kinds of representative combining form schematic diagrames of oscillator unit in the present invention；
Fig. 6 is two kinds of representative arrangement form schematic diagrames of oscillator unit in the present invention；
Fig. 7 is the vibration transmissibility contrast curve chart of common homogeneous plate structure and structure of the invention；
Fig. 8 is the acoustic radiation contrast curve chart of former stiffened panel structure and structure of the invention；
Fig. 9 is the oise insulation factor contrast curve chart of former stiffened panel structure and structure of the invention.
Attached drawing remarks: 1- base structure, 2a- oscillator beam piece, 2b- oscillator mass block, 2c- support construction, 2- oscillator unit.
Specific embodiment
To keep the purposes, technical schemes and advantages implemented of the present invention relatively sharp, with reference to the accompanying drawing, illustrative examples
And its present invention is further explained in explanation.
It is an object of the invention to solve the vibration damping of equipment configuration low-frequency range, Reduction of acoustic radiation and sound-insulation capability is insufficient asks
Topic, proposes a kind of structure of simple possible, can be to improve the inhibitory effect of low-frequency vibration and radiated noise and effective
Improve the sound insulation property of structure, and structure size is small.
Referring to Fig.1, described the present invention provides the Meta Materials type light structures with low frequency vibration damping noise reduction and sound insulation function
Meta Materials type light structures include base structure 1, oscillator mass block 2a, oscillator beam piece 2b, support construction 2c, oscillator unit 2, vibration
Protonatomic mass block 2a, support construction 2c together constitute with oscillator unit 2, and oscillator unit 2 after being connected respectively with oscillator beam piece 2b
It is transversely periodical or approximately periodic be arranged in base structure 1 with longitudinal direction.
Preferably, the structure type of described matrix structure 1 can be homogeneous plate, stiffened panel, perforated foams sandwich plate, bee
The plate and shell structures such as nest sandwich plate, porous lattice structure battenboard (referring to Fig. 2), can also be grid or truss structure；The oscillator
Mass block 2a can be rectangular sheets for the solid-liquid structure after filling liquid in solid structure or airtight solid cavity, oscillator beam piece 2b
Beam piece.
Preferably, the support construction 2c mainly plays a part of to support oscillator beam piece 2b, and support construction 2c is to oscillator beam piece
The supporting way of 2b can be midfoot support or close to midfoot support, and oscillator mass block 2a is placed on oscillator beam piece 2b and deviates at this time
At Support Position；Support construction 2c can also be both ends support or support close to both ends that oscillator mass block 2a is located at this time
Deviate at Support Position on oscillator beam piece 2b (referring to Fig. 3).
Preferably, the structure type of support construction 2c can be independent column structure, cross-sectional shape can for it is round,
Rectangle, circular ring shape, triangle；The structure type of support construction 2c can also pass through bending, punching press, metal plate for oscillator beam piece 2b itself
The minor structure form with support function of the locally-shaped composition such as gold is (referring to Fig. 3, referring to Fig. 4).
Preferably, the oscillator unit 2 can be simple oscialltor form, or more vibrations of discrete distribution or stacking parallel connection
Sub- form；Multiple oscillator units 2 are disposed in described matrix structure 1, the position of oscillator unit 2 can be arranged in base structure 1
Upper surface or lower surface at, can also be arranged at the hole location inside base structure 1；The arrangement form of oscillator unit 2
It can be periodic, or approximately periodic (referring to Fig. 5, Fig. 6).
Preferably, between the oscillator beam piece 2b and oscillator mass block 2a, support construction 2c and base structure 1, oscillator list
Riveting, welding, cementing or be bolted and be fixed can be used between member 2.
Preferably, the oscillator beam piece 2b, support construction 2c can by the metal materials such as steel, aluminium, copper or organic glass,
The nonmetallic materials such as PVC, timber or composite material, laminate are made, the oscillator mass block 2a can by steel, copper, stone material,
Magnet, organic glass or composite material, laminate are made.
Below in conjunction with specific embodiment to the Meta Materials type provided by the invention with low frequency vibration damping noise reduction and sound insulation function
Light structures are described in detail.
Preferred embodiment of the present invention, the structure type of base structure 1 are stiffened panel, and length and width, thickness are having a size of 850mm
×850mm×2.5mm.Oscillator mass block 2a is cylindrical structure, a diameter of 15mm, thickness 10mm；Oscillator beam piece 2b is square
Shape thin layer beam chip architecture, length and width, thickness are having a size of 75mm × 15mm × 2mm.The structure type of support construction 2c is independent column
Structure, cross section are rectangle, and a diameter of 8mm, length and width, thickness are having a size of 15mm × 8mm × 8mm.Support construction 2c is to oscillator
The supporting way of beam piece 2b uses midfoot support, and oscillator mass block 2a is located at the both ends of oscillator beam piece 2b, and oscillator unit 2 uses
Simple oscialltor form, arrangement mode are that periodically, the quantity of arrangement is 7 × 7, and the arrangement spacing between oscillator unit 2 is
100mm.Pass through glue between oscillator beam piece 2b and oscillator mass block 2a, support construction 2c and between base structure 1, oscillator unit 2
Knot is fixed.Base structure 1 and oscillator beam piece 2b are all made of aluminium and are made, and support construction 2c is made of PVC, oscillator mass block 2a
It adopts and is made of a steel.
Vibration damping, noise reduction and the sound insulation effect of the preferred embodiment of the present invention respectively refer to Fig. 7, Fig. 8 and Fig. 9, the results showed that, this
The Meta Materials type light structures of invention have good low frequency vibration damping noise reduction and sound insulation property, and structure size is small.
The above, the only present invention preferably one of specific embodiment, but protection scope of the present invention is not limited to
In this.Relevant technical staff in the field based on or use for reference the various modifications or equivalent arrangements that obtain easily of inventive concept other
Embodiment belongs to the scope of protection of the invention.
Claims (7)
1. the Meta Materials type light structures with low frequency vibration damping noise reduction and sound insulation function, it is characterised in that: the Meta Materials type is light
Matter structure includes base structure (1), oscillator mass block (2a), oscillator beam piece (2b), support construction (2c), oscillator unit (2), vibration
Protonatomic mass block (2a), support construction (2c) together constitute with oscillator unit (2), and shake after being connected respectively with oscillator beam piece (2b)
Subelement (2) is transversely periodical or approximately periodic be arranged on base structure (1) with longitudinal direction.
2. the Meta Materials type light structures according to claim 1 with low frequency vibration damping noise reduction and sound insulation function, feature
Be: the structure type of base structure (1) can be homogeneous plate, stiffened panel, perforated foams sandwich plate, honeycomb sandwich panel, more
The plate and shell structures such as hole lattice structure battenboard can also be grid or truss structure；The oscillator mass block (2a) can be solid knot
Solid-liquid structure in structure or airtight solid cavity after filling liquid, oscillator beam piece (2b) are rectangular sheets beam piece.
3. the Meta Materials type light structures according to claim 1 with low frequency vibration damping noise reduction and sound insulation function, feature
Be: support construction (2c) mainly plays a part of to support oscillator beam piece (2b), branch of the support construction (2c) to oscillator beam piece (2b)
Support mode can be midfoot support or close to midfoot support, and oscillator mass block (2a), which is placed on oscillator beam piece (2b), at this time deviates branch
It supports at position；Support construction (2c) can also be that both ends support or support close to both ends, at this time the position oscillator mass block (2a)
In on oscillator beam piece (2b) deviate Support Position at.
4. the Meta Materials type light structures according to claim 1 with low frequency vibration damping noise reduction and sound insulation function, feature
Be: the structure type of support construction (2c) can be independent column structure, and cross-sectional shape can be circle, rectangle, circle
Annular, triangle；The structure type of support construction (2c) can also pass through bending, punching press, metal plate for oscillator beam piece (2b) itself
Etc. the minor structure form with support function of locally-shaped composition.
5. the Meta Materials type light structures according to claim 1 with low frequency vibration damping noise reduction and sound insulation function, feature
Be: oscillator unit (2) can be simple oscialltor form, or more oscillator forms of discrete distribution or stacking parallel connection；It is described
It is disposed in base structure (1) multiple oscillator units (2), the position of oscillator unit (2) can be arranged in the upper of base structure (1)
At surface or lower surface, it can also be arranged at the internal hole location of base structure (1)；The arrangement form of oscillator unit (2)
It can be periodic, or approximately periodic.
6. the Meta Materials type light structures according to claim 1 with low frequency vibration damping noise reduction and sound insulation function, feature
It is: between oscillator beam piece (2b) and oscillator mass block (2a), support construction (2c) and base structure (1), oscillator unit (2)
Between riveting, welding, cementing or be bolted and be fixed can be used.
7. the Meta Materials type light structures according to claim 1 with low frequency vibration damping noise reduction and sound insulation function, feature
Be: the oscillator beam piece (2b), support construction (2c) can be by the metal materials such as steel, aluminium, copper or organic glass, PVC, timber
Etc. nonmetallic materials or composite material, laminate be made, the oscillator mass block (2a) can by steel, copper, stone material, magnet, have
Machine glass or composite material, laminate are made.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195756A (en) * | 2019-06-28 | 2019-09-03 | 上海超颖声学科技有限公司 | A kind of vibration suppression structure |
| CN110449334A (en) * | 2019-09-03 | 2019-11-15 | 东南大学 | A kind of periodic structure with linear vibration electric motor |
| CN110473513A (en) * | 2019-08-07 | 2019-11-19 | 西北工业大学 | A kind of slit Meta Materials acoustic interlayer plate |
| CN111489729A (en) * | 2020-03-16 | 2020-08-04 | 上海工程技术大学 | Adjustable acoustic metamaterial structure based on square honeycomb substrate and optimization method |
| CN112037750A (en) * | 2020-08-28 | 2020-12-04 | 武汉理工大学 | Active acoustic metamaterial structure unit, control system and acoustic metamaterial plate |
| CN112874066A (en) * | 2021-01-08 | 2021-06-01 | 哈尔滨工程大学 | Honeycomb structure plate integrating vibration suppression and light weight and high strength and preparation method thereof |
| CN113027969A (en) * | 2021-04-30 | 2021-06-25 | 中国人民解放军国防科技大学 | Conformal embedded metamaterial structure for low-frequency vibration and noise reduction of corrugated sandwich board |
| CN113048188A (en) * | 2021-03-12 | 2021-06-29 | 上汽通用五菱汽车股份有限公司 | A automobile-used acoustics superstructure for low frequency broadband damping |
| CN113361012A (en) * | 2021-06-21 | 2021-09-07 | 西北工业大学 | Metamaterial vibration-damping noise-reducing reinforced wall plate and method |
| CN113753173A (en) * | 2021-10-15 | 2021-12-07 | 中国人民解放军国防科技大学 | Sound insulation, vibration reduction and noise suppression multifunctional integrated metamaterial plate shell structure and preparation method thereof |
| CN113843890A (en) * | 2021-09-16 | 2021-12-28 | 中国人民解放军陆军工程大学 | Metamaterial concrete member and preparation method thereof |
| 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 |
| WO2022247730A1 (en) * | 2021-05-25 | 2022-12-01 | 华为技术有限公司 | Vibration suppression assembly and preparation method therefor, electric drive system, and vehicle |
| CN115473455A (en) * | 2022-09-02 | 2022-12-13 | 哈尔滨工程大学 | Vibration damping and power generation dual-function device based on symmetrical multi-layer piezoelectric metamaterial |
| CN116379084A (en) * | 2023-01-20 | 2023-07-04 | 北京理工大学 | Vibration-damping and noise-reducing local resonance metamaterial unit, plate shell and aerospace load |
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| CN110195756A (en) * | 2019-06-28 | 2019-09-03 | 上海超颖声学科技有限公司 | A kind of vibration suppression structure |
| CN110473513A (en) * | 2019-08-07 | 2019-11-19 | 西北工业大学 | A kind of slit Meta Materials acoustic interlayer plate |
| CN110449334A (en) * | 2019-09-03 | 2019-11-15 | 东南大学 | A kind of periodic structure with linear vibration electric motor |
| CN111489729A (en) * | 2020-03-16 | 2020-08-04 | 上海工程技术大学 | Adjustable acoustic metamaterial structure based on square honeycomb substrate and optimization method |
| CN111489729B (en) * | 2020-03-16 | 2024-01-19 | 上海工程技术大学 | Adjustable acoustic metamaterial structure based on square honeycomb substrate and optimization method |
| CN112037750B (en) * | 2020-08-28 | 2024-02-02 | 武汉理工大学 | Active acoustic metamaterial structure unit, control system and acoustic metamaterial plate |
| CN112037750A (en) * | 2020-08-28 | 2020-12-04 | 武汉理工大学 | Active acoustic metamaterial structure unit, control system and acoustic metamaterial plate |
| CN112874066A (en) * | 2021-01-08 | 2021-06-01 | 哈尔滨工程大学 | Honeycomb structure plate integrating vibration suppression and light weight and high strength and preparation method thereof |
| CN113048188A (en) * | 2021-03-12 | 2021-06-29 | 上汽通用五菱汽车股份有限公司 | A automobile-used acoustics superstructure for low frequency broadband damping |
| CN113027969A (en) * | 2021-04-30 | 2021-06-25 | 中国人民解放军国防科技大学 | Conformal embedded metamaterial structure for low-frequency vibration and noise reduction of corrugated sandwich board |
| CN113027969B (en) * | 2021-04-30 | 2022-05-13 | 中国人民解放军国防科技大学 | Conformal embedded metamaterial structure for low-frequency vibration and noise reduction of corrugated sandwich board |
| WO2022247730A1 (en) * | 2021-05-25 | 2022-12-01 | 华为技术有限公司 | Vibration suppression assembly and preparation method therefor, electric drive system, and vehicle |
| CN113361012A (en) * | 2021-06-21 | 2021-09-07 | 西北工业大学 | Metamaterial vibration-damping noise-reducing reinforced wall plate and method |
| CN113361012B (en) * | 2021-06-21 | 2024-01-09 | 西北工业大学 | Metamaterial vibration-damping noise-reducing reinforced wallboard and method |
| CN113843890A (en) * | 2021-09-16 | 2021-12-28 | 中国人民解放军陆军工程大学 | Metamaterial concrete member and preparation method thereof |
| CN113753173A (en) * | 2021-10-15 | 2021-12-07 | 中国人民解放军国防科技大学 | Sound insulation, vibration reduction and noise suppression multifunctional integrated metamaterial plate shell structure and preparation method thereof |
| 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 |
| 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 |
| CN115473455A (en) * | 2022-09-02 | 2022-12-13 | 哈尔滨工程大学 | Vibration damping and power generation dual-function device based on symmetrical multi-layer piezoelectric metamaterial |
| CN116379084A (en) * | 2023-01-20 | 2023-07-04 | 北京理工大学 | Vibration-damping and noise-reducing local resonance metamaterial unit, plate shell and aerospace load |
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|---|---|
| CN109616092B (en) | 2022-09-23 |
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