CN104251275B - Based on the magnetic rheology elastic body vibration isolating suspension of one dimension photonic crystal structure - Google Patents
Based on the magnetic rheology elastic body vibration isolating suspension of one dimension photonic crystal structure Download PDFInfo
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- CN104251275B CN104251275B CN201410323392.5A CN201410323392A CN104251275B CN 104251275 B CN104251275 B CN 104251275B CN 201410323392 A CN201410323392 A CN 201410323392A CN 104251275 B CN104251275 B CN 104251275B
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Abstract
Magnetic rheology elastic body vibration isolating suspension based on one dimension photonic crystal structure disclosed by the invention, comprising: magnetic conduction steelframe, magnetic conductive steel plate, soft magnetic material part, coil and one dimension photonic crystal structure; Magnetic conductive steel plate is arranged at the top of the supporting portion of magnetic conduction steelframe by soft magnetic material part, coil is set around on the supporting portion of magnetic conduction steelframe, between the pedestal that one dimension photonic crystal structure is arranged at magnetic conduction steelframe and magnetic conductive steel plate; Described one dimension photonic crystal structure presses the some layers of periodic arrangement by steel foil, stereotype, magnetic rheology elastic body three kinds of components.Vibration isolating suspension provided by the invention, by introducing one dimension photonic crystal structure, achieves the obstruct of centering low-frequency range elastic wave vibration; Can adjustable elastic ripple forbidden band scope by external magnetic field, adjustable frequency range is wide; Form Untouched control, application area is wider; One dimension photonic crystal structure adopts three components structural cycle stack design, and designability is strong.
Description
" technical field "
The present invention relates to the fields such as material, mechanical realization, electromagnetic technique, be specifically related to the vibration isolating suspension used in a kind of engineering structure.
" background technique "
Magnetorheological elastomer material is made up of natural rubber or silicone rubber matrix and magnetic-particle, and magnetic-particle can form chain-cluster structure under additional magnetic field condition, and its mechanical property can be controlled.Magnetic rheology elastic body has concentrated magnetic flow liquid and elastomeric advantage, and response is fast, good reversibility, and overcomes the shortcoming such as magnetorheological fluid sedimentation, poor stability.Magnetorheological elastomer material is with a wide range of applications in fields such as Aero-Space, automobile, vibration controls.
The research of phonon crystal provides new thinking for vibration control field.Phonon crystal is made up of two or more elastic material, has the periodicity composite structure of phononic band gap characteristic.Form energy band structure when elastic wave is propagated in periodicity composite structure, the frequency range that between being with, ripple cannot be propagated is called phononic band gap.In the frequency range of forbidden band, elastic wave will be suppressed.The forbidden band of phonon crystal is by elastic properties of materials constant, and the decision such as fill factor and lattice, therefore it has very strong designability.
Existing vibration isolating suspension is varied, but at present also not in conjunction with the frequency forbidden band isolation characteristics of phonon crystal and the damping of magnetic rheology elastic body, the magnetic rheology elastic body vibration isolating suspension of rigidity controllable characteristics design.
" summary of the invention "
The object of this invention is to provide a kind of magnetic rheology elastic body vibration isolating suspension, based on photonic crystal structure, phononic band gap is adjustable.Object of the present invention is realized by following technological scheme:
Based on a magnetic rheology elastic body vibration isolating suspension for one dimension photonic crystal structure, it is characterized in that, comprising: magnetic conduction steelframe, magnetic conductive steel plate, soft magnetic material part, coil and one dimension photonic crystal structure; Magnetic conductive steel plate is arranged at the top of the supporting portion of magnetic conduction steelframe by soft magnetic material part, coil is set around on the supporting portion of magnetic conduction steelframe, between the pedestal that one dimension photonic crystal structure is arranged at magnetic conduction steelframe and magnetic conductive steel plate; Described one dimension photonic crystal structure presses the some layers of periodic arrangement by steel foil, stereotype, magnetic rheology elastic body three kinds of components.
As concrete technological scheme, the steel foil in described one dimension photonic crystal structure, stereotype, magnetic rheology elastic body three kinds of components are by periodic arrangement more than 30 layers.
As concrete technological scheme, described steel foil thickness 0.0001m, stereotype thickness 0.0009m, magnetic rheology elastic body thickness 0.0019m.
As concrete technological scheme, the parameter of described stereotype material is: density p
pb=11350kgm
3, longitudinal wave velocity C
pbl=2158m/s and transverse wave speed C
pbt=860m/s, the parameter of steel foil is: density p
s=7890kgm
3, longitudinal wave velocity C
sl=5780m/s and transverse wave speed C
st=3220m/s, the volume ratio 27% of the iron particle in the rubber matrix of magnetic rheology elastic body, iron grain density ρ
fe=7.89 × 10
3kgm
-3, rubber density p
r=1.2 × 10
3kgm
-3, Poisson's ratio 0.47.
As concrete technological scheme, the external magnetic field strength adjustable extent that described coil produces is 0-1000KA/m.
As concrete technological scheme, the supporting portion of described magnetic conduction steelframe is arranged at the pedestal left and right sides, and described coil is set around on the supporting portion of both sides.
Magnetic rheology elastic body vibration isolating suspension based on one dimension photonic crystal structure provided by the invention, compared with current vibration isolating suspension, its beneficial effect is: introduce one dimension photonic crystal structure, realizes the obstruct of centering low-frequency range elastic wave vibration; Can adjustable elastic ripple forbidden band scope by external magnetic field, adjustable frequency range is wide; Form Untouched control, application area is wider; One dimension photonic crystal structure adopts three components structural cycle stack design, and designability is strong.
" accompanying drawing explanation "
The organigram of the vibration isolating suspension that Fig. 1 provides for the embodiment of the present invention.
The elastic wave band structure figure of one dimension photonic crystal structure and the transmission factor figure of correspondence in the vibration isolating suspension that Fig. 2 provides for the embodiment of the present invention.
In the vibration isolating suspension that Fig. 3 provides for the embodiment of the present invention one dimension photonic crystal structure outside magnetic field regulate under elastic wave band structure variation diagram.
" embodiment "
As shown in Figure 1, the vibration isolating suspension that embodiment provides comprises: magnetic conduction steelframe 10, magnetic conductive steel plate 20, soft magnetic material part 30, coil 40 and one dimension photonic crystal structure 50.Magnetic conduction steelframe 10 is made up of pedestal 11 and supporting portion 12, and supporting portion 12 is arranged at both sides, pedestal 11 upper end.Soft magnetic material part 30 is large deformation soft magnetic material part, is arranged at the top in the supported on both sides portion 12 of magnetic conduction steelframe 10, magnetic conductive steel plate 20 and then be arranged at soft magnetic material part 30 upper end.Coil 40 is set around in the supported on both sides portion 12 of magnetic conduction steelframe 10, and for generation of external magnetic field, hot-wire coil external magnetic field strength adjustable extent is 0-1000KA/m.
Consider that the elastomeric Young's modulus of magnetic current affects by external magnetic field, and phonon crystal phononic band gap affects by elastic material Young's modulus ratio, the arrangement of elastic material, the shape size position etc. of scatterer.The one dimension photonic crystal structure of the present embodiment selects three components structure, namely one dimension photonic crystal structure 50 is by steel foil, stereotype, magnetic rheology elastic body three kinds of components by periodic arrangement more than 30 layers, and this one dimension photonic crystal structure 50 is arranged between the pedestal 11 of magnetic conduction steelframe 10 and magnetic conductive steel plate 20.Wherein, magnetic conduction steel foil is conducive to forming closed magnetic field, and stereotype is because its high density and low elastic modulus are as scatterer.
In above-mentioned one dimension photonic crystal structure 50, steel foil thickness 0.0001m, stereotype thickness 0.0009m, magnetic rheology elastic body thickness 0.0019m.Particularly, what this embodiment was selected is the parameter of stereotype material is: density p
pb=11350kgm
3, longitudinal wave velocity C
pbl=2158m/s and transverse wave speed C
pbt=860m/s, the parameter of steel foil is: density p
s=7890kgm
3, longitudinal wave velocity C
sl=5780m/s and transverse wave speed C
st=3220m/s, the volume ratio 27% of the iron particle in the rubber matrix of magnetic rheology elastic body, iron grain density ρ
fe=7.89 × 10
3kgm
-3, rubber density p
r=1.2 × 10
3kgm
-3, Poisson's ratio 0.47.
Above-mentioned vibration isolating suspension is the magnetic rheology elastic body vibration isolating suspension based on one dimension photonic crystal structure, and its core component is the photonic crystal structure 50 of three components One Dimension Periodic arrangement, and its component thickness is much smaller relative to two other dimension.Wherein, the magnetic field that the favourable formation of magnetic conduction steel foil is closed, stereotype is due to its high density and Young's modulus is less, easily produces phononic band gap.When external magnetic field is adjusted to 1000KA/m from 0, there is larger change in the frequency location of phononic band gap and size.Three kinds of material structures, by above-mentioned design, are become one dimension photonic crystal structure by the embodiment of the present invention, load external magnetic field by magnetic conductive steel plate and magnetic conduction steel foil, regulate external magnetic field with regard to adjustable elastic ripple forbidden band.
The phononic band gap structural drawing of one dimension photonic crystal structure and the transmission factor figure of correspondence in the vibration isolating suspension that Fig. 2 provides for the present embodiment, wherein there is the forbidden band of multiple frequency range in bearing within the scope of medium and low frequency, and within the scope of forbidden band, transmission factor is very little.
In the vibration isolating suspension that Fig. 3 provides for embodiment one dimension photonic crystal structure outside magnetic field regulate under phononic band gap variation diagram, under outside magnetic field effect, multiple forbidden bands frequency location and size change.Can be intercepted the vibration of system medium and low frequency section elastic wave by bearing, can contactless regulation and control phononic band gap by external magnetic field, a vibration-isolating platform can be constructed selectively.
Above embodiment is only fully open and unrestricted the present invention, based on the present invention innovate purport, without the replacement of the equivalence techniques feature of creative work, the scope that the application discloses should be belonged to.
Claims (6)
1. based on a magnetic rheology elastic body vibration isolating suspension for one dimension photonic crystal structure, comprising: magnetic conduction steelframe, magnetic conductive steel plate, soft magnetic material part, coil; Magnetic conductive steel plate is arranged at the top of the supporting portion of magnetic conduction steelframe by soft magnetic material part, coil is set around on the supporting portion of magnetic conduction steelframe; It is characterized in that, also comprise one dimension photonic crystal structure, between the pedestal that one dimension photonic crystal structure is arranged at magnetic conduction steelframe and magnetic conductive steel plate; Described one dimension photonic crystal structure presses the some layers of periodic arrangement by steel foil, stereotype, magnetic rheology elastic body three kinds of components.
2. the magnetic rheology elastic body vibration isolating suspension based on one dimension photonic crystal structure according to claim 1, is characterized in that, the steel foil in described one dimension photonic crystal structure, stereotype, magnetic rheology elastic body three kinds of components are by periodic arrangement more than 30 layers.
3. the magnetic rheology elastic body vibration isolating suspension based on one dimension photonic crystal structure according to claim 1 and 2, is characterized in that, described steel foil thickness 0.0001m, stereotype thickness 0.0009m, magnetic rheology elastic body thickness 0.0019m.
4. the magnetic rheology elastic body vibration isolating suspension based on one dimension photonic crystal structure according to claim 3, is characterized in that, the parameter of described stereotype material is: density p
pb=11350kg/m
3, longitudinal wave velocity C
pbl=2158m/s and transverse wave speed C
pbt=860m/s, the parameter of steel foil is: density p
s=7890kg/m
3, longitudinal wave velocity C
sl=5780m/s and transverse wave speed C
st=3220m/s, the volume ratio 27% of the iron particle in the rubber matrix of magnetic rheology elastic body, iron grain density ρ
fe=7.89 × 10
3kgm
-3, rubber density p
r=1.2 × 10
3kgm
-3, Poisson's ratio 0.47.
5. the magnetic rheology elastic body vibration isolating suspension based on one dimension photonic crystal structure according to claim 3, is characterized in that, the external magnetic field strength adjustable extent that described coil produces is 0-1000KA/m.
6. the magnetic rheology elastic body vibration isolating suspension based on one dimension photonic crystal structure according to claim 5, is characterized in that, the supporting portion of described magnetic conduction steelframe is arranged at the pedestal left and right sides, and described coil is set around on the supporting portion of both sides.
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| RU172016U1 (en) * | 2016-10-12 | 2017-06-26 | федеральное государственное бюджетное образовательное учреждение высшего образования "Московский государственный технический университет имени Н.Э. Баумана (национальный исследовательский университет)" (МГТУ им. Н.Э. Баумана) | Multi-axis active anti-vibration platform |
| CN106523580B (en) * | 2016-11-16 | 2019-03-05 | 温州大学 | Magnetorheological phonon crystal vibration absorber, vibration-proof structure and oscillation damping method |
| CN107542827B (en) * | 2017-10-17 | 2019-04-05 | 吉林大学 | A kind of composite construction phonon crystal vibration isolating suspension |
| CN108050189B (en) * | 2017-11-08 | 2019-06-28 | 江苏大学 | A kind of intelligent phonon crystal isolator based on magnetorheological plastic body |
| CN108036013B (en) * | 2017-11-08 | 2019-06-28 | 江苏大学 | A kind of adjustable three-dimensional phonon crystal intelligent shock-isolation device of band gap |
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| CN101586641A (en) * | 2009-06-23 | 2009-11-25 | 武汉理工大学 | The laminated intelligent shock-isolation bearing capable of self-adaptively regulating cutting performance |
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| JPS63259235A (en) * | 1987-04-16 | 1988-10-26 | Nkk Corp | Magnetic fluid damper apparatus |
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| CN101586641A (en) * | 2009-06-23 | 2009-11-25 | 武汉理工大学 | The laminated intelligent shock-isolation bearing capable of self-adaptively regulating cutting performance |
| CN102733483A (en) * | 2012-07-02 | 2012-10-17 | 大连理工大学 | Variable rigidity shock insulation integral intelligent support seat |
| CN103854822A (en) * | 2012-12-01 | 2014-06-11 | 山东科技大学 | Magnetic field control method adapting to distortional magneto-rheological elastomer particle structure |
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Effective date of registration: 20210616 Address after: No.3, building 2, No.191, Boai 7th Road, Torch Development Zone, Zhongshan City, Guangdong Province Patentee after: Guangdong Titan Intelligent Power Co.,Ltd. Address before: On the south side of Zhuhai Avenue in Guangdong city of Zhuhai province Jinwan District 519000 Patentee before: GUANGDONG INSTITUTE OF SCIENCE & TECHNOLOGY |