CN106678271A - Local resonance low-frequency band gap vibration suppression periodic structure - Google Patents
Local resonance low-frequency band gap vibration suppression periodic structure Download PDFInfo
- Publication number
- CN106678271A CN106678271A CN201611118503.4A CN201611118503A CN106678271A CN 106678271 A CN106678271 A CN 106678271A CN 201611118503 A CN201611118503 A CN 201611118503A CN 106678271 A CN106678271 A CN 106678271A
- Authority
- CN
- China
- Prior art keywords
- periodic structure
- vibration suppression
- mass elements
- elastic
- mass
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention relates to a periodic structure which is based on the local resonance band gap characteristic and has the low-frequency vibration suppression performance, and belongs to the technical field of aviation, aerospace and ship vibration noise control. The periodic structure comprises mass components, elastic components and a base body, and the mass components and the elastic components are periodically distributed. A periodic unit comprises metal structures, namely, the mass components. The side surface of each mass component is surrounded by a circle of rubber or silicone annular structure, namely, the corresponding elastic component. The side surface of the circumference of each mass component is a curved surface with a certain shape. Each elastic component is attached to the corresponding mass component and then surrounds the mass component to serve as a whole period to be arranged in the elastic structure base body. The elastic components are also attached to the base body. The periodic structure has the obvious band gap characteristic. The periodic structure based on the local resonance band gap characteristic has the good low-frequency vibration suppression performance.
Description
Technical field
The invention belongs to Aeronautics and Astronautics and Ship Vibration noise control technique field.The present invention relates to a kind of be based on local
LOCALLY RESONANT ELASTIC WAVE characteristic, the periodic structure with low frequency vibration suppression performance.
Background technology
The main component of radiated noise when mechanical noise is the lowsteamings such as Aeronautics and Astronautics and ship.Especially for low
Frequency noise, compared to medium-high frequency, it has propagation distance farther and the characteristics of line spectrum feature is stable, is unfavorable for the hidden of aircraft
Property and safety guarantee.And traditional vibration insulation and noise reduction technology spininess centering dither that subtracts is controlled with acoustic radiation, low-frequency vibration noise
Problem cannot still obtain at present effectively solving.
Mechanical noise is mainly caused by mechanical vibration, and being processed by vibration suppression can reach noise reduction.Because elastic wave exists
There are band gap properties when propagating in periodic structure, i.e., the propagation of elastic wave in the range of bandgap frequency is prohibited, hence with week
The vibration of phase structure suppression system is expected to become a kind of new vibration and noise reducing method.With periodic structure material component and dimensioning
Very little change, attenuation characteristic also will change in the bandgap frequency scope of periodic structure and band gap.Therefore, according to periodic structure
This characteristic, by changing periodic structure form or its internal material component parameter, such as elastic properties of materials constant, density and damping
Deng the vibration suppression periodic structure with different band gap properties can be obtained.
According to the corresponding relation of the ratio and bandgap frequency of wavelength and lattice paprmeter, band gap can be divided into Bragg scatter-type (bands
Wavelength corresponding to gap frequency is in same magnitude with lattice paprmeter) and local resonance type (wavelength corresponding to bandgap frequency can
Much larger than lattice paprmeter).Bragg scatter-type periodic structures are difficult to obtain low bandgap under the conditions of less periodic dimensions, because
This is difficult to be applied in terms of low frequency vibration damping noise reduction；And shake in the bandgap frequency of locally resonant type periodic structure and repeated unit cell
The intrinsic vibration characteristics of subcomponent is closely related, and bandgap frequency can be designed into lower frequency and then solve a low frequency vibration suppression difficult problem.
The content of the invention
It is an object of the invention to provide a kind of locally resonant low bandgap vibration suppression periodic structure, by elastic construction
Vibration suppression periodic structure is installed, vibration and noise reducing purpose is reached.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of locally resonant low bandgap vibration suppression periodic structure, including the mass elements of period profile, flexible member and base
Body.Repeated unit cell is mass elements including metal structure, and make a circle rubber or silica gel material circulus are wrapped in mass elements side
That is flexible member, mass elements peripheral side is and the phase between flexible member and mass elements with effigurate curved surface
Mutually laminating, is then arranged in flexible member encirclement mass elements in elastic construction matrix as integral cycle, wherein elasticity unit
It is also bonded to each other between part and matrix.
The locally resonant low bandgap vibration suppression periodic structure, mass elements section and matrix hole shape can be round
Shape, triangle, tetragon, hexagon etc., or irregularly shaped.
The locally resonant low bandgap vibration suppression periodic structure, period profile form can be rectangle, rhombus or triangle
The various ways such as arrangement.
The locally resonant low bandgap vibration suppression periodic structure, laying the upper and lower surface of elastic matrix of periodic structure can apply
Cover high damping material or deadener.
Vibration suppression periodic structure of the present invention is for classical elastic construction, and main feature is as follows：
There are band gap properties in the 1st, propagation of the elastic wave in periodic structure.In the range of bandgap frequency, bending wave is in the cycle
Propagation in structure is effectively suppressed；
2nd, the locally resonant band gap of periodic structure, is mainly derived from repeated unit cell resonance characteristics with bending wave propagation characteristic
Interact, and repeated unit cell resonance characteristics is the shear action generation between flexible member and mass elements；
3rd, the structural parameters and material parameter of reasonable selection flexible member and mass elements, such as using the bullet that elastic modelling quantity is little
Property big mass elements of element or density metal etc., bandgap frequency can be made to expand to low frequency, so as to realize more low frequency vibration damping
Purpose；
4th, the damping of flexible member is improved, the energy that can strengthen shear action between flexible member and mass elements disappears
Consumption, and the shape of mass elements peripheral side is designed, the contact area due to increasing itself and flexible member, is also beneficial to increase
Damping action in shear history, further enhances the broadband vibration suppression performance of structure, and then reduces the radiated noise of structure.
Description of the drawings
Fig. 1：Repeated unit cell interstitital texture schematic diagram.
Fig. 2：Repeated unit cell interstitital texture generalized section.
Fig. 3：Vibration suppression periodic structure schematic diagram of the present invention.
Fig. 4：Vibration suppression periodic structure matrix excitation region contrasts with the vibratory response in pick-up area.
Fig. 5：Vibration suppression periodic structure and comparison structure pick-up area vibratory response contrast.
In figure：1-mass elements；2-flexible member；3-matrix.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further detail with specific embodiment.
As shown in figure 1, repeated unit cell is mass elements 1 including metal structure, the side of mass elements 1 bag make a circle rubber or
Silica gel material circulus is flexible member 2, and the peripheral side of mass elements 1 is with effigurate curved surface and elastic first
It is bonded to each other between part 2 and mass elements 1, as shown in Figure 2；Then by basic cell element periodic arrangement in elastic construction matrix 3,
It is also bonded to each other between its elastic element 2 and matrix 3, the vibration suppression periodic structure for finally giving is as shown in Figure 3.
Due to the locally resonant band gap properties of periodic structure, the propagation of bending wave can be suppressed.Vibration suppression acts on main body
Present two aspects, one is vibration suppression periodic structure matrix one end (region of matrix no periodic cell element distribution, referred to as matrix excitation
Area) vibration be delivered to the matrix other end through periodic structure (region of another no periodic cell element of matrix distribution, referred to as matrix picked up
Shake area) suppressed, two is the Mean Oscillation response in vibration suppression periodic structure pick-up area and classical elastic construction (comparison structure)
Comparing is reduced.In this specific embodiment, vibration suppression periodic structure matrix size be 1000mm × 455mm × 4mm, material
For steel, it is 8 × 7 to arrange circular hole number intercycle, aperture 50mm, pitch of holes 65mm；Mass elements diameter 30mm, material is
Lead；Flexible member is 10 from modulus7Pa, fissipation factor are 0.2 elastomeric material.Matrix one end applies normal direction excitation, is given
Periodic structure matrix excitation region, the Mean Oscillation response correlation curve in pick-up area, and the pick-up area of periodic structure, comparison structure
Vibratory response is contrasted, respectively as shown in Figure 4, Figure 5.As seen from the figure, periodic structure has obvious band gap properties, common based on local
The periodic structure of band gap properties of shaking has good low frequency vibration suppression performance.
Claims (4)
1. a kind of mass elements 1 of locally resonant low bandgap vibration suppression periodic structure, including period profile, flexible member 2 and base
Body 3, it is characterised in that：Periodic unit is mass elements 1 including metal structure, and make a circle rubber or silicon are wrapped in the side of mass elements 1
Glue material circulus is flexible member 2, and the peripheral side of mass elements 1 is and the flexible member 2 with effigurate curved surface
It is bonded to each other between mass elements 1, then flexible member 2 is surrounded into mass elements 1 and be arranged in elastic knot as integral cycle
It is also bonded to each other between its elastic element 2 and matrix 3 in structure matrix 3.
2. locally resonant low bandgap vibration suppression periodic structure according to claim 1, it is characterised in that：1 section of mass elements
Face and the hole shape of matrix 3 can be circle, triangle, tetragon, hexagon etc., or irregularly shaped.
3. locally resonant low bandgap vibration suppression periodic structure according to claim 1 and 2, it is characterised in that：Period profile
Form can be rectangle, rhombus or rounded projections arranged etc..
4. the locally resonant low bandgap vibration suppression periodic structure according to claim 1 or 2 or 3, it is characterised in that：Laying week
The upper and lower surface of elastic matrix 3 of phase structure can coat high damping material or deadener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611118503.4A CN106678271A (en) | 2016-12-08 | 2016-12-08 | Local resonance low-frequency band gap vibration suppression periodic structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611118503.4A CN106678271A (en) | 2016-12-08 | 2016-12-08 | Local resonance low-frequency band gap vibration suppression periodic structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106678271A true CN106678271A (en) | 2017-05-17 |
Family
ID=58867895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611118503.4A Pending CN106678271A (en) | 2016-12-08 | 2016-12-08 | Local resonance low-frequency band gap vibration suppression periodic structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106678271A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108053819A (en) * | 2018-01-15 | 2018-05-18 | 中国空间技术研究院 | Vibration-proof structure |
| CN108119588A (en) * | 2017-12-21 | 2018-06-05 | 西北工业大学 | A kind of low frequency wideband vibration suppression structure based on binary cycle forbidden band characteristic |
| CN108172208A (en) * | 2018-03-28 | 2018-06-15 | 贵州大学 | A kind of locally resonant chirality honeycomb coating |
| CN108447466A (en) * | 2018-03-28 | 2018-08-24 | 贵州大学 | A kind of locally resonant acoustic stimulation |
| CN108520739A (en) * | 2018-03-28 | 2018-09-11 | 贵州大学 | A kind of impedance transition mechanism type acoustic stimulation based on locally resonant principle |
| CN108643024A (en) * | 2018-04-09 | 2018-10-12 | 东南大学 | A kind of period composite construction setback plate |
| CN111442047A (en) * | 2020-04-07 | 2020-07-24 | 柳州科路测量仪器有限责任公司 | Broadband passive vibration isolation device of three-dimensional ternary metamaterial and design method |
| CN112747060A (en) * | 2020-12-30 | 2021-05-04 | 西北工业大学 | Quasi-periodic local resonance structure for widening vibration reduction frequency band |
| CN113153949A (en) * | 2021-04-19 | 2021-07-23 | 中国人民解放军国防科技大学 | Nonlinear coupling resonance unit and nonlinear acoustic metamaterial cellular structure |
| CN113593509A (en) * | 2021-07-14 | 2021-11-02 | 中国空气动力研究与发展中心低速空气动力研究所 | Composite structure with high-efficiency sound insulation and low-noise radiation |
| CN113606274A (en) * | 2021-07-14 | 2021-11-05 | 中国空气动力研究与发展中心低速空气动力研究所 | Multi-degree-of-freedom local resonance type super-damping composite structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3307577A1 (en) * | 1982-03-04 | 1983-09-15 | Bridgestone Tire Co. Ltd., Tokyo | Sound-insulating material and the use thereof |
| US20130153331A1 (en) * | 2010-08-25 | 2013-06-20 | Hp Pelzer Holding Gmbh | Broadband sound absorber |
| CN103594080A (en) * | 2013-10-25 | 2014-02-19 | 国家电网公司 | Light low-frequency wideband film metamaterial sound isolator |
| CN103996395A (en) * | 2014-05-29 | 2014-08-20 | 西安交通大学 | Elastic membrane-type low-frequency sound insulation metamaterial structure |
| CN104681021A (en) * | 2015-02-11 | 2015-06-03 | 上海交通大学 | Magnetic-field-adjustable low-frequency sound insulation structure and sound insulation material |
| CN105122348A (en) * | 2013-03-12 | 2015-12-02 | 香港科技大学 | Sound attenuating structures |
-
2016
- 2016-12-08 CN CN201611118503.4A patent/CN106678271A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3307577A1 (en) * | 1982-03-04 | 1983-09-15 | Bridgestone Tire Co. Ltd., Tokyo | Sound-insulating material and the use thereof |
| US20130153331A1 (en) * | 2010-08-25 | 2013-06-20 | Hp Pelzer Holding Gmbh | Broadband sound absorber |
| CN105122348A (en) * | 2013-03-12 | 2015-12-02 | 香港科技大学 | Sound attenuating structures |
| CN103594080A (en) * | 2013-10-25 | 2014-02-19 | 国家电网公司 | Light low-frequency wideband film metamaterial sound isolator |
| CN103996395A (en) * | 2014-05-29 | 2014-08-20 | 西安交通大学 | Elastic membrane-type low-frequency sound insulation metamaterial structure |
| CN104681021A (en) * | 2015-02-11 | 2015-06-03 | 上海交通大学 | Magnetic-field-adjustable low-frequency sound insulation structure and sound insulation material |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119588B (en) * | 2017-12-21 | 2020-01-14 | 西北工业大学 | Low-frequency broadband vibration suppression structure based on double-period forbidden band characteristic |
| CN108119588A (en) * | 2017-12-21 | 2018-06-05 | 西北工业大学 | A kind of low frequency wideband vibration suppression structure based on binary cycle forbidden band characteristic |
| CN108053819B (en) * | 2018-01-15 | 2024-05-14 | 中国空间技术研究院 | Vibration damping structure |
| CN108053819A (en) * | 2018-01-15 | 2018-05-18 | 中国空间技术研究院 | Vibration-proof structure |
| CN108447466A (en) * | 2018-03-28 | 2018-08-24 | 贵州大学 | A kind of locally resonant acoustic stimulation |
| CN108520739A (en) * | 2018-03-28 | 2018-09-11 | 贵州大学 | A kind of impedance transition mechanism type acoustic stimulation based on locally resonant principle |
| CN108172208A (en) * | 2018-03-28 | 2018-06-15 | 贵州大学 | A kind of locally resonant chirality honeycomb coating |
| CN108643024A (en) * | 2018-04-09 | 2018-10-12 | 东南大学 | A kind of period composite construction setback plate |
| CN111442047A (en) * | 2020-04-07 | 2020-07-24 | 柳州科路测量仪器有限责任公司 | Broadband passive vibration isolation device of three-dimensional ternary metamaterial and design method |
| CN111442047B (en) * | 2020-04-07 | 2021-05-07 | 柳州科路测量仪器有限责任公司 | Broadband passive vibration isolation device of three-dimensional ternary metamaterial and design method |
| CN112747060A (en) * | 2020-12-30 | 2021-05-04 | 西北工业大学 | Quasi-periodic local resonance structure for widening vibration reduction frequency band |
| CN113153949A (en) * | 2021-04-19 | 2021-07-23 | 中国人民解放军国防科技大学 | Nonlinear coupling resonance unit and nonlinear acoustic metamaterial cellular structure |
| CN113153949B (en) * | 2021-04-19 | 2022-05-13 | 中国人民解放军国防科技大学 | Nonlinear coupling resonance unit and nonlinear acoustic metamaterial cellular structure |
| CN113593509A (en) * | 2021-07-14 | 2021-11-02 | 中国空气动力研究与发展中心低速空气动力研究所 | Composite structure with high-efficiency sound insulation and low-noise radiation |
| CN113606274A (en) * | 2021-07-14 | 2021-11-05 | 中国空气动力研究与发展中心低速空气动力研究所 | Multi-degree-of-freedom local resonance type super-damping composite structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106678271A (en) | Local resonance low-frequency band gap vibration suppression periodic structure | |
| US6266427B1 (en) | Damped structural panel and method of making same | |
| CN108119588A (en) | A kind of low frequency wideband vibration suppression structure based on binary cycle forbidden band characteristic | |
| US9835219B2 (en) | Vibration damper for shielding plate | |
| US20210319147A1 (en) | Ultrathin omnidirectional vibration-isolation metasurface structure and design method thereof | |
| CN104632992A (en) | Damping component, crystal oscillation device, frequency synthesizer and electronic device | |
| CN104810014A (en) | Continuously-variable-impedance functionally graded material and homogenous medium periodic structure material | |
| Tanaka et al. | Forced vibration experiments on flexible piezoelectric devices operating in air and water environments | |
| CN211145203U (en) | Periodic structure with bistable nonlinear energy trap | |
| Gao et al. | Investigation on tunable low-frequency property of magnetic field induced phononic crystal with Archimedean spiral-beams | |
| Hu et al. | Attenuation of impact waves in a nonlinear acoustic metamaterial beam | |
| CN101638947B (en) | Vibration damper for ultrahigh-voltage steel tube tower | |
| KR102179665B1 (en) | Elastic metamaterial and vibration reduction method using the same | |
| Zhou et al. | Band gaps in grid structure with periodic local resonator subsystems | |
| CN106683658B (en) | Phononic crystal with series structure | |
| KR102156940B1 (en) | Vibration and noise reduction device | |
| CN108842963B (en) | Periodic beam for inhibiting vibration | |
| Zheng et al. | Bandgap mechanism analysis of elastically restrained periodic cylindrical shells with arbitrary periodic thickness | |
| CN106702886B (en) | A kind of stiffness variable particle damping device suitable for bridge | |
| Wei et al. | Optimal design of the damping layer in plate with imperfect Acoustic Black Hole for wave energy dissipation | |
| He et al. | Seismic responses and vibration control of offshore wind turbines considering hydrodynamic effects based on underwater shaking table tests | |
| CN212423433U (en) | Vibration isolation device based on acoustic black hole structure and ship system | |
| JP2007501359A (en) | Method and apparatus for vibration filtering and damping | |
| CN113096628A (en) | Triangular lattice local resonance type phononic crystal structure | |
| CN106919771B (en) | Design method and application of buckling instability morphology of hard film-soft substrate double-layer structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170517 |