CN110388402A - A kind of adjustable periodic structure of rigidity with magnetic rheological body - Google Patents
A kind of adjustable periodic structure of rigidity with magnetic rheological body Download PDFInfo
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- CN110388402A CN110388402A CN201910489495.1A CN201910489495A CN110388402A CN 110388402 A CN110388402 A CN 110388402A CN 201910489495 A CN201910489495 A CN 201910489495A CN 110388402 A CN110388402 A CN 110388402A
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- magnetic rheological
- rheological body
- shrinkage pool
- periodic structure
- magnetic
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- 230000000737 periodic effect Effects 0.000 title claims abstract description 47
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- 239000011347 resin Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 14
- 239000000470 constituent Substances 0.000 claims description 7
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- 229910052751 metal Inorganic materials 0.000 claims description 6
- 230000003252 repetitive effect Effects 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 239000011133 lead Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 238000002955 isolation Methods 0.000 abstract description 9
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- 239000012530 fluid Substances 0.000 description 6
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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
- F16F6/00—Magnetic springs; Fluid magnetic springs, i.e. magnetic spring combined with a fluid
Abstract
The present invention relates to a kind of adjustable periodic structures of the rigidity with magnetic rheological body, film or plate matrix including the shrinkage pool with periodicity or relaxed periodicity, nonmagnetic block and the magnetic rheological body being filled in shrinkage pool, when only with two groups of n-ary form ns, it is filled only with magnetic rheological body and for encapsulating the resin layer of shrinkage pool.Shrinkage pool can unilateral or bilateral arrangement on film or plate matrix.Film or plate are as matrix, and when using three groups of n-ary form ns, nonmagnetic block and magnetic rheological body collectively form a scatterer oscillator；Change the physical property of magnetic rheological body in real time by the size that control applies magnetic field strength, to change the bandgap range of periodic structure, has the advantages that real-time active control.Compared with traditional vibration isolation, this periodic structure can realize the integrated design of structure and vibrating isolation system, and have many advantages, such as that light weight, isolation frequency be wide, real-time active control, be with a wide range of applications in engineering vibration isolation field.
Description
Technical field
The present invention relates to a kind of periodic structures, tie more particularly to a kind of rigidity with magnetic rheological body adjustable period
Structure.
Background technique
Periodic structure is a kind of limited phonon crystal in space, the concept of phonon crystal be by photonic crystal the deduction of conception and
Come, both simulate the arrangement mode of mineral crystal atom, there is certain periodic structure.By two or more difference
The medium of resilient nature is formed in space periodicity nesting and there are the composite materials of elastic wave band gaps or structure to be known as phonon crystalline substance
Body.It is the most important characteristic of phonon crystal there are elastic wave band gaps, the Physical Mechanism for generating elastic wave band gaps mainly has two
Kind: Bragg diffraction mechanism and local Resonance Mechanism.The formation of both band gap is all due to structural periodicity and single scattering body
Mie scatter coefficient as a result, it is that the interaction (periodicity) of each repetitive unit plays a leading role that difference, which is only in that,
Or the resonance of single scatterer plays a leading role.Vibration and noise reducing may be implemented in the band gap properties of periodic structure.
Magnetic rheological body is mainly made of magnetic-particle, carrier fluid and additive, as a kind of intellectual material in no external magnetic field
When, magnetic rheological body shows fluid behaviour；After applying magnetic field, magnetic rheological body starts to solidify, and magnetic-particle is arranged in chain, column
Shape or increasingly complex reticular structure；After the magnetic field of application is cancelled, magnetic rheological body shows fluid behaviour again.It is magnetorheological
This quick, reversible transformation of body, has been widely used magnetic rheological body in many fields.People are for magnetic rheological body
The research of performance is concentrated mainly on the cutting performance perpendicular to magnetic direction, such as viscosity, shear yield stress, modulus of shearing
Deng.
Change the physical property of magnetic rheological body in real time by the size that control applies magnetic field strength, to change period knot
The bandgap range of structure.Has the advantages that real-time active control.Compared with traditional vibration isolation, this periodic structure can realize structure with
The integrated design of vibrating isolation system, and have many advantages, such as that light weight, isolation frequency be wide, real-time active control, in engineering vibration isolation
Field is with a wide range of applications.
Summary of the invention
Technical problem: the object of the present invention is to provide a kind of adjustable periodic structures of the rigidity with magnetic rheological body.Pass through
Periodic shrinkage pool is set on film or plate matrix, and fills magnetic rheological body and nonmagnetic block wherein, by changing
Become the intensity of externally-applied magnetic field and change the physical parameter of magnetic rheological body, realizes the real-time active control to bandgap range.It can apply
In vibration damping and vibration isolation field.
Technical solution: the present invention is a kind of adjustable periodic structure of the rigidity with magnetic rheological body, which includes
The film or plate matrix of shrinkage pool with periodicity or relaxed periodicity, the magnetic rheological body being filled in shrinkage pool, and be used to
The resin layer of shrinkage pool is encapsulated, the form of distribution is two constituent elements or three groups of n-ary form ns.
Wherein:
Nonmagnetic block is also filled with below the magnetic rheological body being filled in shrinkage pool.
The shrinkage pool filled with non magnetic block or magnetic rheological body unilateral or bilateral cloth on film or plate matrix
It sets.
The periodic structure, the smallest repetitive unit for forming periodic structure are known as unit cell, the arrangement between each unit cell
Shape can be square, triangle or other polygons.
When using two groups of n-ary form ns, magnetic rheological body fills full shrinkage pool, cross sectional shape be round, ellipse, rectangle or its
His polygon.
When three groups of n-ary form ns of use, the side in shrinkage pool far from matrix, which is filled, expires non magnetic block, vacant in shrinkage pool
It is partially filling up magnetic rheological body, cross sectional shape is also round, oval, rectangle or other polygons.
The material of the film or plate matrix and shrinkage pool is rubber or epoxy resin, the material right and wrong of non magnetic block
Metal material or nonmagnetic metal.
The nonmetallic materials are ceramics or plastics；Nonmagnetic metal is lead, copper, aluminium, austenitic stainless steel and its alloy.
The utility model has the advantages that compared with prior art, present invention has the advantage that
1) when the band gap properties of periodic structure refer to that elastic wave or sound wave in certain frequencies are propagated in film or plate
To significantly it be inhibited, therefore the periodic structure can prevent the propagation of elastic wave or sound wave in particular frequency range, reach
The purpose of vibration and noise reducing.
2) traditional vibration and noise reducing device size is big and cost is high, and there is the periodic structure frequency can design, specific aim
By force, the advantages that size is small, effect is good.It is easy to make simultaneously, it is convenient for standardized production.
3) at present most periodic structure shock absorber part mostly using passive control, i.e. structure once determination,
The attenuation frequency ranges having also determine therewith, it is desirable to expand again or to change bandgap range relatively difficult.And it is this with magnetic
The periodic structure of rheological body can be realized the active control to bandgap range in real time.
Detailed description of the invention
Fig. 1 is that the scatterer oscillator of shrinkage pool single-sided arrangement of the present invention is cylindrical periodic structure figure；
Fig. 2 is that the scatterer oscillator of shrinkage pool bilateral arrangement of the present invention is cylindrical periodic structure figure；
Fig. 3 is that the scatterer oscillator of shrinkage pool single-sided arrangement of the present invention is the periodic structure figure of cuboid；
Fig. 4 is between unit cell of the present invention according to the periodic structure top view of equilateral triangle arrangement；
Fig. 5 is the single cell structure figure of periodic structure of the present invention；
Fig. 6 is the sectional view of the unit cell of three constituent element periodic structures of the invention；
Fig. 7 is the sectional view of the unit cell of two constituent element periodic structures of the invention
Have in figure: film or plate matrix 1, shrinkage pool 2, non magnetic block 3, magnetic rheological body 4, resin layer 5.
Specific embodiment
The present invention is a kind of adjustable periodic structure of the rigidity with magnetic rheological body, which includes with periodically
The either film of the shrinkage pool of relaxed periodicity or plate matrix, nonmagnetic block and the magnetic rheological body being filled in shrinkage pool, and
For encapsulating the resin layer of shrinkage pool, the form of distribution is two constituent elements or three constituent elements.
The periodic structure includes the film or plate matrix of the shrinkage pool with periodicity or relaxed periodicity, is filled in recessed
Magnetic rheological body in hole, and for encapsulating the resin layer of shrinkage pool, the form of distribution is two constituent elements.
The shrinkage pool filled with non magnetic block or magnetic rheological body can be unilateral or double on film or plate matrix
Side arrangement.
The smallest repetitive unit of composition periodic structure is called unit cell, and the spread geometry between each unit cell can be pros
Shape, triangle or other polygons.
Further, when using two groups of n-ary form ns, magnetic rheological body fills full shrinkage pool, and cross sectional shape can be circle, ellipse
Circle, rectangle or other polygons.When using three groups of n-ary form ns, full non-magnetic block is filled in the side in shrinkage pool far from matrix
Body, cross sectional shape are also possible to circle, ellipse, rectangle or other polygons.Rest filling is full magnetorheological in shrinkage pool
Body.
The material of the film or plate matrix and shrinkage pool can be rubber or epoxy resin, and the material of block can be
The nonmagnetic metal such as the nonmetallic materials such as ceramics, plastics or lead, copper, aluminium, austenitic stainless steel and its alloy.
Forming method of the invention is as follows:
The shrinkage pool of m row n column is according to periodicity or relaxed periodicity arrangement is unilateral or bilateral is arranged in film or plate base
On body；When filling full magnetic rheological body when using two groups of n-ary form ns, in shrinkage pool, and using three groups of n-ary form ns, filling is non-in shrinkage pool
Magnetic material block and magnetic rheological body.Result in formation of periodic structures, have band gap properties.The smallest repetitive unit of periodic structure is known as
Unit cell, the arrangement mode between each unit cell can be square, triangle or other regular polygons.The material of film or plate matrix
Material can be rubber or epoxy resin, and the material of block can be the nonmetallic materials such as ceramics, plastics or lead, copper, aluminium, austenite
The nonmagnetic metal such as stainless steel and its alloy.
The band gap properties of periodic structure refer to will when elastic wave or sound wave in certain frequencies are propagated in film or plate
Significantly inhibited, can be applied to vibration and noise reducing using this characteristic periodic structure.Magnetic rheological body mainly by magnetic-particle,
Carrier fluid and additive are constituted, and in no external magnetic field, magnetic rheological body shows fluid behaviour；After applying magnetic field, magnetic rheological body is opened
Begin to solidify, magnetic-particle is arranged in chain, column or increasingly complex reticular structure；After the magnetic field of application is cancelled, magnetic current
Variant shows fluid behaviour again.The physical of magnetic fluid can be changed in real time by the size that control applies magnetic field strength
Can, to change the bandgap range of periodic structure.Has the advantages that real-time active control.
With reference to the accompanying drawing, by embodiment, invention is further described in detail:
Embodiment 1:
As shown in Fig. 1, Fig. 5, Fig. 6 and Fig. 7, the present embodiment is the adjustable week of the rigidity with magnetic rheological body of single-sided arrangement
Phase structure.Using square arrangement between unit cell, lattice constant is set as a1, film or plate matrix with a thickness of h, In
M is set on film or plate matrix and arranges n column shrinkage pool, shrinkage pool form is cylinder.Fig. 6 is three groups of n-ary form ns, and bottom is placed non magnetic
Block, full magnetic rheological body is filled on upper layer.Fig. 7 is two groups of n-ary form ns, and full magnetic rheological body is filled in shrinkage pool.
Embodiment 2:
As shown in Fig. 2, Fig. 5, Fig. 6 and Fig. 7, the present embodiment is the adjustable week of the rigidity with magnetic rheological body of bilateral arrangement
Phase structure.Using square arrangement between unit cell, lattice constant is set as a1, film or plate matrix with a thickness of h, In
M is set on film or plate matrix and arranges n column shrinkage pool, shrinkage pool form is cylinder.Fig. 6 is three groups of n-ary form ns, and bottom is placed non magnetic
Block, full magnetic rheological body is filled on upper layer.Fig. 7 is two groups of n-ary form ns, and full magnetic rheological body is filled in shrinkage pool.
Embodiment 3:
As shown in figure 3, the adjustable oscillator cross sectional shape of the rigidity with magnetic rheological body that the present embodiment is single-sided arrangement is
The periodic structure of rectangle.Using square arrangement between unit cell, lattice constant is set as a1, the thickness of film or plate matrix
Degree is h, and m is arranged on film or plate matrix and arranges n column shrinkage pool, shrinkage pool cross sectional shape is rectangle.Three groups of n-ary form ns, bottom can be used
Layer places nonmagnetic block, and full magnetic rheological body is filled on upper layer.Two groups of n-ary form ns can also be used, filling is full magnetorheological in shrinkage pool
Body.
Embodiment 4:
As shown in Figure 4, Figure 5, Figure 6 and Figure 7, the present embodiment is the adjustable week of the rigidity with magnetic rheological body of single-sided arrangement
Phase structure.Using equilateral triangle arrangement between unit cell, lattice constant is set as a1, film or plate matrix with a thickness of h,
M is set on film or plate matrix and arranges n column shrinkage pool, shrinkage pool form is cylinder.Fig. 6 is three groups of n-ary form ns, and bottom is placed non-magnetic
Property block, full magnetic rheological body is filled on upper layer.Fig. 7 is two groups of n-ary form ns, and full magnetic rheological body is filled in shrinkage pool.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of adjustable periodic structure of rigidity with magnetic rheological body, which is characterized in that the periodic structure includes having the period
The film or plate matrix (1) of the shrinkage pool (2) of property or relaxed periodicity, the magnetic rheological body (4) being filled in shrinkage pool (2), and
For encapsulating the resin layer (5) of shrinkage pool (2), the form of distribution is two constituent elements or three groups of n-ary form ns.
2. the adjustable periodic structure of a kind of rigidity with magnetic rheological body according to claim 1, which is characterized in that described
Nonmagnetic block (3) are also filled with below the magnetic rheological body (4) being filled in shrinkage pool (2).
3. the adjustable periodic structure of a kind of rigidity with magnetic rheological body according to claim 2, which is characterized in that described
Shrinkage pool (2) filled with non magnetic block (3) or magnetic rheological body (4) unilateral or bilateral cloth on film or plate matrix (1)
It sets.
4. the adjustable periodic structure of a kind of rigidity with magnetic rheological body according to claim 1, which is characterized in that described
Periodic structure, the smallest repetitive unit for forming periodic structure is known as unit cell, and the spread geometry between each unit cell can be just
It is rectangular, triangle or other polygons.
5. the adjustable periodic structure of a kind of rigidity with magnetic rheological body according to claim 1, which is characterized in that when adopting
When with two groups of n-ary form ns, magnetic rheological body (4) is filled full shrinkage pool (2), cross sectional shape be circle, circular ring shape, ellipse, rectangle or its
His polygon.
6. the adjustable periodic structure of a kind of rigidity with magnetic rheological body according to claim 1, which is characterized in that when adopting
When with three groups of n-ary form ns, the side in shrinkage pool (2) far from matrix (1), which is filled, expires non magnetic block (3), vacant in shrinkage pool (2)
It is partially filling up magnetic rheological body (4), cross sectional shape is also round, oval, rectangle or other polygons.
7. the adjustable periodic structure of a kind of rigidity with magnetic rheological body according to claim 1, which is characterized in that described
The material of film or plate matrix (1) and shrinkage pool (2) is rubber or epoxy resin, and the material of non magnetic block (3) is non-gold
Belong to material or nonmagnetic metal.
8. the adjustable periodic structure of a kind of rigidity with magnetic rheological body according to claim 1, which is characterized in that described
Nonmetallic materials are ceramics or plastics；Nonmagnetic metal is lead, copper, aluminium, austenitic stainless steel and its alloy.
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| CN201910489495.1A CN110388402A (en) | 2019-06-06 | 2019-06-06 | A kind of adjustable periodic structure of rigidity with magnetic rheological body |
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| CN201910489495.1A CN110388402A (en) | 2019-06-06 | 2019-06-06 | A kind of adjustable periodic structure of rigidity with magnetic rheological body |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111168706A (en) * | 2020-01-21 | 2020-05-19 | 中国科学技术大学 | Controllable adhesion device using magnetorheological plastomer and preparation method thereof |
| CN112555327A (en) * | 2020-12-02 | 2021-03-26 | 重庆大学 | Lattice magneto-rheological intelligent vibration reduction structure, magneto-rheological vibration isolator and manufacturing method thereof |
| CN113685645A (en) * | 2021-09-22 | 2021-11-23 | 南京航空航天大学 | Pipeline noise control device and method based on local resonance mechanism acoustic metamaterial |
| CN114992271A (en) * | 2022-07-18 | 2022-09-02 | 上海秦耀航空试验技术有限公司 | Airplane vibration reduction component, aviation wall plate and band gap design method |
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