CN106321702A - Compression-shear mixed multi-layer magnetorheological elastomer shock absorber - Google Patents
Compression-shear mixed multi-layer magnetorheological elastomer shock absorber Download PDFInfo
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- CN106321702A CN106321702A CN201610957699.XA CN201610957699A CN106321702A CN 106321702 A CN106321702 A CN 106321702A CN 201610957699 A CN201610957699 A CN 201610957699A CN 106321702 A CN106321702 A CN 106321702A
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- 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
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/3605—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by their material
- F16F1/361—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by their material comprising magneto-rheological elastomers [MR]
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
A compression-shear mixed multi-layer magnetorheological elastomer shock absorber comprises a magnetic conductive tube mounted on a base, a piston mounted in the magnetic conductive tube, a magnet exciting coil mounted on the outer wall of a mounting seat arranged on the base as well as magnetorheological elastomers, wherein the magnetorheological elastomers comprise a shear type first magnetorheological elastomer and compression type second magnetorheological elastomers; the first magnetorheological elastomer is mounted between the piston and the magnetic conductive tube; a shock absorbing layer structure is mounted between the mounting seat and the piston and comprises the second magnetorheological elastomers and magnetic conductive plates, and the second magnetorheological elastomers and the magnetic conductive plates are arranged alternately. According to the compression-shear mixed multi-layer magnetorheological elastomer shock absorber, under joint action of the shear type magnetorheological elastomer and the compression type magnetorheological elastomers, the adjusting ranges of the rigidity and damping of the shock absorber are increased, the shock absorbing effect is enhanced, and the shock absorber can attenuate vibration load of different frequency and amplitudes.
Description
Technical field
The invention belongs to technical field of engineering machinery, relate to a kind of vibroshock, specifically, be a kind of mixed based on pressing-cutting
The multilamellar magneto-rheological elastomer intelligent vibroshock of syntype.
Background technology
Ocean platform is the large-scale structures of offshore oil exploitation, processing, transporting something containerized, in-service, by wave, sea
The environmental load such as wind, ocean current encourages, and is chronically at forced vibration state.Along with the increase of the platform application depth of water, physical dimension increases
Greatly, global stiffness reduces, and platform dynamic response increases.The sustained vibration of platform may cause its fatigue damage to destroy, reduction makes
With the life-span, also can affect the work comfort degree of operation on the sea personnel, reduce work efficiency.Therefore, effectively suppression platform is in outside
Structural vibration under load excitation has important engineering significance.Apply more passive absorber at present, such as viscous damping
Device, Tuned Liquid etc., its rigidity of structure and damping are definite value, are only capable of the outside load to fixed amplitude and frequency characteristic
Lotus is effective；And active damper, though can Automatic adjusument rigidity and damping value, decay different frequency, the environmental load of amplitude,
But energy consumption is huge and needs control algolithm accurately.
Magnetic rheology elastic body is the intelligent composite that micro/nano level ferromagnetic particle strengthens non-magnetic elastic matrix.In system
During Bei apply external magnetic field, there is relative motion because attracting each other in granule, formed in elastomer orderly chain or
Column structure.The modulus of magnetic rheology elastic body and damping can increase with the rising of external magnetic field strength.With magnetic rheological liquid phase
Ratio, it not only has controllability, reversibility, the response feature such as rapidly, also has good sealing and stability.Based on magnetic current
Become elastomer design vibroshock can Automatic adjusument rigidity and damping, attenuating structure vibrate.At present, most of magnetorheological elasticity
Body intelligent vibration damper is based on shearing or the single mode of operation of extruding, or only has monolayer or two-layer magnetic rheology elastic body, just
Degree and damping adjustable extent are little, and longitudinal rigidity is relatively low, can only be used to decay small-scale structure in the excitation of low amplitude value external load
Under vibration.
Summary of the invention
The present invention is directed to current magneto-rheological elastomer intelligent vibroshock range of accommodation little, the problem that longitudinal rigidity is low, propose
Hybrid multilayer magnetic rheology elastic body vibroshock is pressed-cut to one.
The pressure of the present invention-cut hybrid multilayer magnetic rheology elastic body vibroshock, including the magnetic conductive cylinder being arranged on base, installs
Piston in magnetic conductive cylinder, and it is arranged on the magnet exciting coil on the mounting seat outer wall that base is arranged.
Farther include magnetic rheology elastic body, described magnetic rheology elastic body include the first shearing magnetic rheology elastic body and
Second magnetic rheology elastic body of compression.
First magnetic rheology elastic body is installed between piston and magnetic conductive cylinder.
Installing vibration damping Rotating fields between mounting seat and piston, vibration damping Rotating fields includes the second magnetorheological elasticity of stacked arrangement
Body and magnetic conductive board, the second magnetic rheology elastic body and magnetic conductive board are alternately arranged.
Preferably, described mounting seat top exterior walls is provided with spacing preiection.
Preferably, the edge of described mounting seat end face aligns with vibration damping Rotating fields outer ledge.
Preferably, the height of described first magnetic rheology elastic body is identical with the height of piston.
Preferably, described base being provided with every magnetic outer sleeve, described magnetic conductive cylinder is positioned at every magnetic outer sleeve, described work
The piston rod that plug is arranged is stretched out by the through hole arranged every magnetic outer sleeve, installs sealing ring between described piston rod and through hole.
The invention has the beneficial effects as follows: press-cut hybrid multilayer magnetic rheology elastic body vibroshock by shearing and compression
Magnetic rheology elastic body acts on simultaneously, increases the range of accommodation of damper stiffness and damping, enhances effectiveness in vibration suppression, makes this vibration damping
Device can be decayed the oscillating load of different frequency and amplitude.Shearing type MR elastomer is also at radially reinforced piston simultaneously
Stability, improves vibroshock longitudinally rigid.Compression magnetic rheology elastic body is alternately laminated with magnetic conductive board, and magnetic conductive board is not only made
Enable compression magnetic rheology elastic body that multilamellar is stably set for skeleton, increase rigidity and the damp adjustable range of vibroshock,
Magnetic conductive board enhances magnetic field utilization rate simultaneously.
Spacing preiection in mounting seat can form coiling groove on the outer wall, enables magnet exciting coil stably to install, with
Time ensure mounting seat end face and vibration damping Rotating fields justified margin, add both contacts area, thus reach to improve magnetic field profit
By the purpose of rate.
Shearing type MR elastomer end face and bottom surface surface in alignment upper and lower with piston respectively, can improve magnet exciting coil and produce
The utilization rate of magnetisation field.
Every magnetic outer sleeve, the magnetic flux that magnet exciting coil produces is completely enclosed wherein, enable vibroshock to be applied to various
Occasion, without peripheral equipment is caused magnetic disturbance, avoids that magnetic rheology elastic body is naked to be exposed on the external in environment simultaneously, prevents magnetic current
Become the mechanical property loss that elastomer causes because of ambient temperature and humidity etc..
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation pressing-cut hybrid multilayer magnetic rheology elastic body vibroshock.
Detailed description of the invention
In order to be able to further appreciate that the structure of the present invention, feature and other purpose, detailed in conjunction with appended preferred embodiment
Being described as follows, illustrated preferred embodiment is merely to illustrate technical scheme, and the non-limiting present invention.
The detailed description of the invention of the present invention is as follows:
As it is shown in figure 1, press-cut hybrid multilayer magnetic rheology elastic body vibroshock to include the magnetic conductive cylinder 2 being arranged on base 1,
The piston 3 being arranged in magnetic conductive cylinder 2, and it is arranged on the magnet exciting coil 5 on mounting seat 4 outer wall that base 1 is arranged.Base 1, lead
Magnetic cylinder 2 and piston 3 all select the material of steel alloy or other high intensity and high permeability to make.
Vibroshock still further comprises magnetic rheology elastic body, and magnetic rheology elastic body includes the magnetorheological elasticity of shearing first
Body 6 and the second magnetic rheology elastic body 7 of compression.Gluing installation the first magnetic rheology elastic body 6 between piston 3 and magnetic conductive cylinder 2.Peace
Installing vibration damping Rotating fields 8 between dress seat 4 and piston 3, vibration damping Rotating fields 8 includes the second magnetic rheology elastic body 7 He of stacked arrangement
Magnetic conductive board 9, the second magnetic rheology elastic body 7 and magnetic conductive board 9 alternately gluing connection.Magnetic conductive board 9 is by ingot iron or other high magnetic conduction
Material is made, and can improve the permeability of vibration damping Rotating fields 8.
Magnet exciting coil 5 is the most spiral helicine wire winding, uses enamel-cover copper conductor to make, after energising, about
Form magnetic field, change the size of electric current in magnet exciting coil 5 and can regulate and control its power producing magnetic field.Magnet exciting coil 5 is pacified
It is contained in the mounting seat 4 of column, by mounting seat 4, vibration damping Rotating fields 8, piston 3 and the first magnetic rheology elastic body 6, magnetic conductive cylinder 2
Magnetic loop is formed with base 1.Change the magnetic field power that magnet exciting coil 5 produces, scalable the first magnetic rheology elastic body 6 and vibration damping layer
The rigidity of the second magnetic rheology elastic body 7 in structure 8 and damping, the different amplitude of decay and the extraneous load of frequency, thus regulate
The vibration damping amplitude of whole vibroshock.
Firm in order to make magnet exciting coil 5 install, mounting seat 4 top exterior walls is provided with spacing preiection 10.Spacing preiection 10 can
Being structure as a whole with mounting seat 4, making base 1 entirety is I shape, increases the area of mounting seat 4 end face, makes mounting seat 4 end face
Edge aligns with vibration damping Rotating fields 8 outer ledge, it is ensured that vibration damping Rotating fields 8 can completely attach to mounting seat 4, improves magnetic conduction effect
Rate.
In order to preferably play the damping effect of shearing type MR elastomer 6, the height of the first magnetic rheology elastic body 6 with
The height of piston 3 is identical, and the first magnetic rheology elastic body 6 upper/lower terminal aligns with piston 3 upper/lower terminal respectively, makes the first magnetic current
Become that elastomer 6 is complete with piston 3 sidewall gluing to be connected, and the first magnetic rheology elastic body 6 and the most complete gluing company of magnetic conductive cylinder 2
Connect, make magnetic flux can cross completely by the first magnetic rheology elastic body 6, improve magnet exciting coil 5 and produce the utilization rate of magnetic flux.
In order to ensure that the magnetic flux that magnet exciting coil 5 produces completely encloses, base 1 is provided with every magnetic outer sleeve 11, magnetic conductive cylinder 2
Being positioned at every magnetic outer sleeve 11, the piston rod 12 that piston 3 is arranged is stretched out by the through hole arranged every magnetic outer sleeve 11, piston rod 12
And sealing ring 13 is installed between through hole, through hole is sealed.
Every magnetic outer sleeve 11 select rustless steel or other not magnetic conduction or low magnetic permeability material make, magnet exciting coil 5 is produced
Magnetic flux completely enclose wherein, make vibroshock can be applied to various occasion without peripheral equipment is caused magnetic disturbance, with
Time avoid that magnetic rheology elastic body is naked to be exposed on the external in environment, prevent the power that magnetic rheology elastic body causes because of ambient temperature and humidity etc.
Learn performance loss.
Claims (5)
1. press-cut hybrid multilayer magnetic rheology elastic body vibroshock for one kind, it is characterised in that include being arranged on leading on base (1)
Magnetic cylinder (2), the piston (3) being arranged in magnetic conductive cylinder (2), and it is arranged on encouraging on mounting seat (4) outer wall that base (1) is arranged
Magnetic coil (5)；
Farther include magnetic rheology elastic body, described magnetic rheology elastic body include shearing the first magnetic rheology elastic body (6) and
Second magnetic rheology elastic body (7) of compression；
First magnetic rheology elastic body (6) is installed between piston (3) and magnetic conductive cylinder (2)；
Installing vibration damping Rotating fields (8) between mounting seat (4) and piston (3), vibration damping Rotating fields (8) includes the second magnetic of stacked arrangement
Magnetorheological elastomer (7) and magnetic conductive board (9), the second magnetic rheology elastic body (7) and magnetic conductive board (9) are alternately arranged.
Pressure the most according to claim 1-cut hybrid multilayer magnetic rheology elastic body vibroshock, it is characterised in that described installation
Seat (4) top exterior walls is provided with spacing preiection (10).
Pressure the most according to claim 1 and 2-cut hybrid multilayer magnetic rheology elastic body vibroshock, it is characterised in that described peace
The edge of dress seat (4) end face aligns with vibration damping Rotating fields (8) outer ledge.
Pressure the most according to claim 1-cut hybrid multilayer magnetic rheology elastic body vibroshock, it is characterised in that described first
The height of magnetic rheology elastic body (6) is identical with the height of piston (3).
Pressure the most according to claim 1-cut hybrid multilayer magnetic rheology elastic body vibroshock, it is characterised in that described base
(1) being provided with every magnetic outer sleeve (11) on, described magnetic conductive cylinder (2) is positioned at every magnetic outer sleeve (11), described piston (3)
The piston rod (12) arranged is stretched out, between described piston rod (12) and through hole by the through hole arranged every magnetic outer sleeve (11)
Sealing ring (13) is installed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610957699.XA CN106321702A (en) | 2016-10-27 | 2016-10-27 | Compression-shear mixed multi-layer magnetorheological elastomer shock absorber |
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| CN201610957699.XA CN106321702A (en) | 2016-10-27 | 2016-10-27 | Compression-shear mixed multi-layer magnetorheological elastomer shock absorber |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763374A (en) * | 2017-03-07 | 2017-05-31 | 合肥工业大学 | A kind of semi-passive composite vibration isolator of active |
| CN107013073A (en) * | 2017-03-24 | 2017-08-04 | 南京理工大学 | Composite-structure magnetorheological elastomer isolator |
| CN107351918A (en) * | 2017-06-19 | 2017-11-17 | 南京航空航天大学 | A kind of magnetic rheology elastic body body mount |
| CN108317207A (en) * | 2018-04-13 | 2018-07-24 | 西安科技大学 | The MR elastomer vibration isolator of the multi-direction vibration control of vertical-horizontal can be achieved |
| CN113432825A (en) * | 2021-07-29 | 2021-09-24 | 重庆大学 | Wind tunnel airplane tail support model semi-active vibration damper based on magnetorheological elastomer |
| CN113757298A (en) * | 2021-09-09 | 2021-12-07 | 哈尔滨工业大学 | Piston type magnetorheological elastomer dynamic vibration absorber with shearing-compression mixing effect |
| CN114110290A (en) * | 2021-11-27 | 2022-03-01 | 北京工业大学 | Nonlinear self-tuning pipeline vibration noise semi-active control method and system |
| CN114934971A (en) * | 2022-06-30 | 2022-08-23 | 重庆大学 | Viscoelastic magnetorheological complex applicable to multiple working modes and application method thereof |
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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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| CN206145037U (en) * | 2016-10-27 | 2017-05-03 | 中国海洋大学 | Press it becomes elastomer shock absorber to cut mixed multilayer magnetic current |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763374A (en) * | 2017-03-07 | 2017-05-31 | 合肥工业大学 | A kind of semi-passive composite vibration isolator of active |
| CN106763374B (en) * | 2017-03-07 | 2019-04-05 | 合肥工业大学 | A kind of semi-passive composite vibration isolator of active- |
| CN107013073A (en) * | 2017-03-24 | 2017-08-04 | 南京理工大学 | Composite-structure magnetorheological elastomer isolator |
| CN107351918A (en) * | 2017-06-19 | 2017-11-17 | 南京航空航天大学 | A kind of magnetic rheology elastic body body mount |
| CN108317207A (en) * | 2018-04-13 | 2018-07-24 | 西安科技大学 | The MR elastomer vibration isolator of the multi-direction vibration control of vertical-horizontal can be achieved |
| CN113432825A (en) * | 2021-07-29 | 2021-09-24 | 重庆大学 | Wind tunnel airplane tail support model semi-active vibration damper based on magnetorheological elastomer |
| CN113432825B (en) * | 2021-07-29 | 2023-11-10 | 重庆大学 | Wind tunnel aircraft tail boom model semi-active vibration damper based on magnetorheological elastomer |
| CN113757298A (en) * | 2021-09-09 | 2021-12-07 | 哈尔滨工业大学 | Piston type magnetorheological elastomer dynamic vibration absorber with shearing-compression mixing effect |
| CN114110290A (en) * | 2021-11-27 | 2022-03-01 | 北京工业大学 | Nonlinear self-tuning pipeline vibration noise semi-active control method and system |
| CN114934971A (en) * | 2022-06-30 | 2022-08-23 | 重庆大学 | Viscoelastic magnetorheological complex applicable to multiple working modes and application method thereof |
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Application publication date: 20170111 |