CN105889381A - Intelligent variable-stiffness tuned mass damper system with magnetorheological elastomer bearings - Google Patents
Intelligent variable-stiffness tuned mass damper system with magnetorheological elastomer bearings Download PDFInfo
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- CN105889381A CN105889381A CN201610472900.5A CN201610472900A CN105889381A CN 105889381 A CN105889381 A CN 105889381A CN 201610472900 A CN201610472900 A CN 201610472900A CN 105889381 A CN105889381 A CN 105889381A
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- China
- Prior art keywords
- magnetic
- elastic body
- tuned mass
- connecting plate
- rheology elastic
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Classifications
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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
- F16F6/00—Magnetic springs; Fluid magnetic springs, i.e. magnetic spring combined with a fluid
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
Abstract
The invention discloses an intelligent variable-stiffness tuned mass damper system with magnetorheological elastomer bearings and belongs to the technical field of passive structure adaptive control. The intelligent variable-stiffness tuned mass damper system comprises a tuned mass block, a stress component, excitation components, sensors and a controller, wherein the tuned mass block is mounted on an upper connecting plate; the stress component consists of at least four magnetorheological elastomer bearings, magnetic-conducting connecting plates and the upper connecting plate; each bearing is enwrapped with a protective rubber layer; each excitation component consists of a coil, an iron core and a hard insulating layer; one sensor is mounted on each of the upper connecting plate and a lower connecting plate; the controller changes the shearing stiffness of the system according to a signal. The intelligent variable-stiffness tuned mass damper system is simple to produce and convenient to mount; the mechanical and magnetic properties of materials are fully utilized, and the space utilization rate and the magnetic field utilization rate are high; compared with a cylindrical bearing, a circular truncated cone-shaped bearing has wider stiffness adjustment range and better overall stability; each coil is not only taken as one excitation component, but also has the function of the tuned mass block; real-time and efficient adjustment can be ensured.
Description
Technical field
The invention belongs to structure adaptive and passively control technical field, relate to a kind of with magnetic rheology elastic body for closing
Key material, rigidity adjustable intelligent tuning mass damper.
Background technology
Tuned mass damper technology is the Structure uniformity technology of a kind of maturation, and its effectiveness in vibration suppression is obvious,
Be widely used in controlling high-level structure and bridge earthquake, wind bestir oneself with under response.This passive control
Technology is implemented simple, highly reliable, but its defect be tuned mass damper can not be according to architectural characteristic, lotus
The change carrying characteristic is adjusted correspondingly, thus it cannot be guaranteed that optimal control effect, the most even aggravates
The vibration of structure, causes catastrophic consequence.In recent years, the grinding of the adjustable tuned mass damper of rigidity
Study carefully and receive publicity.By changing the rigidity of tuned mass damper, the natural vibration period of tuned mass damper can
Change with the change along with free vibration period of structure, and then ensure optimal control effect.But, existing
Variable stiffness apparatus kind is less, and most of such device needs to realize stiffness tuning by actuator
Target.These regulative modes not only can not realize in real time, continuous print regulation, and needs to disappear during regulating
Consume more energy.Magnetic rheology elastic body is that variation rigidity provides new pattern, available magnetic rheology elastic body
Stiffness variable Tuned mass damper system made by the intelligent bearing made.But, tuned mass damper is past
Toward needing bigger deformation, the base isolation bearing deformation of the usual structure of this deformation ratio is much bigger.If will be existing
The bearing having form is directly used as the deformation element of tuned mass damper, bearing during big displacement probably because
Deform excessive and cause overall collapse.Additionally, in order to ensure mechanical property, the volume of bearing is the biggest,
Need to use bigger coil to be just provided that the magnetic field that space is sufficiently large, to change the rigidity of bearing.Such one
Coming, the cost of manufacture, maintenance cost, use cost are the highest.
Therefore, redesign magnetic rheology elastic body bearing intelligence variation rigidity Tuned mass damper system, can
In the case of need not actuator, ensure the rigidity of system in real time, regulate accurately, meet again large deformation,
Low cost, the use demand of low energy consumption, be extremely necessary.
Summary of the invention
The technical problem to be solved is: designs a magnetic rheology elastic body bearing intelligence variation rigidity and adjusts
Humorous mass damper system, its rigidity can according to structure need to realize reversible, real-time, regulate accurately.Logical
Crossing the design of rational device, it is possible to make system cost of manufacture relatively low, production process is simple, uses safety and energy
Consuming low, stiffness tuning scope is big, and little to surrounding environment influence.
Technical scheme:
A kind of magnetic rheology elastic body bearing intelligence variation rigidity Tuned mass damper system, including tuning quality block,
Stress assembly, excitation component, sensor and controller, tuning quality block is arranged on the connecting plate of top；It is subject to
Power assembly includes at least 4 magnetic rheology elastic body bearings, magnetic conduction connecting plate and top connecting plate, magnetorheological bullet
Gonosome bearing is formed by stacking by steel plate and magnetic rheology elastic body layer, rubber cover wrap up；Excitation component
Including the coil identical with magnetic rheology elastic body bearing quantity, iron core and heat insulation hard insulating barrier；Coil is arranged on
The top of magnetic rheology elastic body bearing, by iron core, top connecting plate and bottom magnetic conduction connecting plate, with adjacent
Coil formed series connection, each two magnetic rheology elastic body bearing formed one Guan Bi magnetic circuit；Upper sensor
It is separately mounted on upper junction plate and bottom magnetic conduction connecting plate with lower sensor；Controller by holding wire with
Sensor, excitation component are connected, and change the shearing rigidity of system according to signal.
Described magnetic rheology elastic body bearing is the truncated cone-shaped that little bottom, top is big.
Need to increase and decrease the quantity of magnetic rheology elastic body bearing according to design, and install damping unit additional.
Beneficial effects of the present invention:
One, a kind of magnetic rheology elastic body bearing intelligence variation rigidity Tuned mass damper system, utilize magnetic current
Become continuous, the reversible variation rigidity characteristic of elastomeric material, make magnetic rheology elastic body bearing, it is possible to achieve
Rigidity real-time, regulate accurately；It addition, change rigidity is without actuator, the power consumption of system is little.
Its two, a kind of magnetic rheology elastic body bearing intelligence variation rigidity Tuned mass damper system, use round platform
The design of the magnetic rheology elastic body bearing of shape, compared with cylindrical bearing, overall stability is greatly promoted；
Truncated cone-shaped holder top sectional area is less, therefore can use coil and the iron core of reduced size, it is to avoid material
The waste of material；The integral rigidity of truncated cone-shaped bearing is mainly determined by the holder top that rigidity is less, only regulation
Seat top rigidity i.e. can reach preferable regulating effect, reduces the size of coil the most further, is reducing
While cost of manufacture, improve system stiffness adjustable range.
Its three, a kind of magnetic rheology elastic body bearing intelligence variation rigidity Tuned mass damper system, by coil cloth
Putting at truncated cone-shaped holder top, near the part that the support stiffness needing regulation is minimum, magnetic field utilization rate is higher；
Additionally, the parts such as coil, iron core have bigger quality, being placed on top can enter as tuning quality block
Row work, makes coil be provided simultaneously with the function of excitation, damping.
Its four, a kind of magnetic rheology elastic body bearing intelligence variation rigidity Tuned mass damper system, if having employed
Dry magnetic rheology elastic body bearing, each two bearing can form Guan Bi by upper junction plate and magnetic conduction connecting plate
Magnetic circuit, thus improve magnetic field intensity, promote adjustable range.
Accompanying drawing explanation
Fig. 1 is magnetic rheology elastic body bearing intelligence variation rigidity Tuned mass damper system embodiment of the present invention
Floor plan.
Fig. 2 is magnetic rheology elastic body bearing intelligence variation rigidity Tuned mass damper system embodiment of the present invention
A-A generalized section.
Fig. 3 is magnetic rheology elastic body bearing intelligence variation rigidity Tuned mass damper system embodiment of the present invention
Bearing generalized section.
Fig. 4 is magnetic rheology elastic body bearing intelligence variation rigidity Tuned mass damper system embodiment of the present invention
Bearing section B-B schematic diagram.
Fig. 5 is magnetic rheology elastic body bearing intelligence variation rigidity Tuned mass damper system embodiment of the present invention
Bearing C-C schematic cross-section.
Fig. 6 is magnetic rheology elastic body bearing intelligence variation rigidity Tuned mass damper system embodiment of the present invention
Magnetic line of force distribution map.
In figure: 1 tuning quality block；2 upper junction plates；3 iron cores；4 heat insulation hard insulating barriers；5 coils；6 controls
Device processed；7 holding wires；8 upper sensor；9 rubber covers；10 steel plates；11 magnetic rheology elastic body layers；
12 bottom magnetic conduction connecting plates；13 lower sensors；14 magnetic lines of force.
Detailed description of the invention
The detailed description of the invention of the present invention is described in detail below in conjunction with technical scheme and accompanying drawing.
The detailed description of the invention of the present invention is shown in Fig. 1 to Fig. 6.By floor plan Fig. 1 and A-A generalized section
Fig. 2 understands, and the present embodiment is by 1 tuning quality 2,4 magnetorheological elasticity of fast 1,1 piece of top connecting plate
Body bearing, 4 excitation components, 12,2 sensors of 2 pieces of magnetic conduction connecting plates 8,13, holding wire 7 and 1
Individual controller 6 forms.The tuning quality block 1 of described system is fixed on top connecting plate 2, and top connects
Plate 2 is connected with the iron core 3 of excitation component.The iron core about 3 of 4 excitation components of described system welds steel
Plate, after coil 5 wraps up via heat insulation hard insulating barrier 4, puts on iron core 3.Excitation component is by sulfuration
It is connected with the truncated cone-shaped magnetic rheology elastic body-steel plate sulfuration lamination 10,11 of lower section.Truncated cone-shaped magnetic rheology elastic body
-steel plate sulfuration lamination 10,11 is wrapped up by protection rubber layer 9, is connected with the magnetic conduction connecting plate of lower section by sulfuration
12.Magnetic conduction connecting plate 12 passes through perforate, it is possible to achieve with the connection of structure.Bearing generalized section Fig. 3 master
Show that the structural form of single magnetic rheology elastic body bearing, section B-B schematic diagram Fig. 4 mainly show excitation group
The horizontal layout of part, C-C schematic cross-section Fig. 5 mainly shows the section form of magneto-rheological elastomer intelligent device,
Therefore sensor 8,13, holding wire 7 and controller 6 are not shown.
Described upper junction plate 2, magnetic conduction connecting plate 12, iron core 3, steel plate 10 is made by permeability magnetic material.
Magnetic rheology elastic body, steel plate, the size of coil all should be drawn the physical dimension of optimization by Finite Element Magnetic Field Analysis,
And the related request of existing rubber earthquake isolation support design specification should be met.
Described magnetic rheology elastic body 11, is interpolation mangneto particle in silicone rubber matrix, makees at externally-applied magnetic field
The intellectual material made with lower solidification.Magnetic rheology elastic body exists the granuloplastic chain of mangneto or column
Ordered structure, under magnetic fields, the rigidity of this material and damping all can increase；When removing magnetic field, material
Rigidity and damping return to the state without magnetic field.It is fast that magnetic rheology elastic body has response, good reversibility excellent
Point.
The magnetic line of force of the present invention moves towards as shown in Figure 6: coil 5 excites magnetic field, iron core 3 to increase magnetic induction intensity；
The magnetic line of force is via left side iron core 3, upper junction plate 2, right side iron core, right side truncated cone-shaped magnetic rheology elastic body-steel plate
Sulfuration lamination, magnetic conduction connecting plate 12, left side truncated cone-shaped magnetic rheology elastic body-steel plate sulfuration lamination 10,11, return
To left side iron core 3, form complete loop.
The course of work of the brief description present invention.
When structure is acted on by earthquake, high wind load etc., sensor 8,13 can perception top tuning quality
Block and the motion conditions of substructure, input controller 6 by perceptual signal, and controller is according to designing in advance
Control strategy, the input voltage of control coil 5, change the magnetic induction intensity of bearing, thus change tuning matter
The rigidity of amount damper system and damping, reach to better control over the target of structure quake.
Claims (3)
1. a magnetic rheology elastic body bearing intelligence variation rigidity Tuned mass damper system, it is characterised in that this magnetic
Magnetorheological elastomer bearing intelligence variation rigidity Tuned mass damper system include tuning quality block, stress assembly,
Excitation component, sensor and controller, tuning quality block is arranged on the connecting plate of top；Stress assembly includes
At least 4 magnetic rheology elastic body bearings, magnetic conduction connecting plate and top connecting plate, magnetic rheology elastic body bearing is equal
It is formed by stacking by steel plate and magnetic rheology elastic body layer, rubber cover wraps up；Excitation component includes and magnetic current
Become coil, iron core and heat insulation hard insulating barrier that elastomer bearing quantity is identical；Coil is arranged on magnetorheological elasticity
The top of body bearing, by iron core, top connecting plate and bottom magnetic conduction connecting plate, is formed with adjacent coil
Series connection, each two magnetic rheology elastic body bearing forms the magnetic circuit of a Guan Bi；Upper sensor and bottom sensing
Device is separately mounted on upper junction plate and bottom magnetic conduction connecting plate；Controller by holding wire and sensor, encourage
Magnetic assembly is connected, and changes the shearing rigidity of system according to signal.
Magnetic rheology elastic body bearing intelligence variation rigidity Tuned mass damper system the most according to claim 1,
It is characterized in that, described magnetic rheology elastic body bearing is the truncated cone-shaped that little bottom, top is big.
Magnetic rheology elastic body the most according to claim 1 and 2 bearing intelligence variation rigidity tuned mass damper system
System, it is characterised in that increase and decrease the quantity of magnetic rheology elastic body bearing as required, and install damping unit additional.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610472900.5A CN105889381B (en) | 2016-06-24 | 2016-06-24 | A kind of magnetic rheology elastic body bearing intelligence variation rigidity Tuned mass damper system |
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| CN201610472900.5A CN105889381B (en) | 2016-06-24 | 2016-06-24 | A kind of magnetic rheology elastic body bearing intelligence variation rigidity Tuned mass damper system |
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| CN105889381A true CN105889381A (en) | 2016-08-24 |
| CN105889381B CN105889381B (en) | 2017-12-26 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165301A (en) * | 2017-07-07 | 2017-09-15 | 西京学院 | A kind of magnetorheological piezoelectricity vibration isolating suspension of controllable intellectualized |
| CN107289059A (en) * | 2017-06-27 | 2017-10-24 | 北京航空航天大学 | A kind of oscillating vibration-damping system based on magnetic converting technique |
| CN111764497A (en) * | 2020-06-23 | 2020-10-13 | 淮阴工学院 | Active anti-seismic house structure |
| CN112483539A (en) * | 2020-10-19 | 2021-03-12 | 南京航空航天大学 | Intelligent elastic bearing and control method |
| CN114562051A (en) * | 2022-03-25 | 2022-05-31 | 魏陈熙 | Networked building vibration isolation support with adjustable damping assembly and system |
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| US20070063566A1 (en) * | 2005-09-07 | 2007-03-22 | Browne Alan L | Seat assemblies including a seat stroking device and methods of use |
| CN204127195U (en) * | 2014-09-11 | 2015-01-28 | 合肥工业大学 | Bidirectional modulation formula multilayer magnetic rheology elastic body vibration damper |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289059A (en) * | 2017-06-27 | 2017-10-24 | 北京航空航天大学 | A kind of oscillating vibration-damping system based on magnetic converting technique |
| CN107165301A (en) * | 2017-07-07 | 2017-09-15 | 西京学院 | A kind of magnetorheological piezoelectricity vibration isolating suspension of controllable intellectualized |
| CN107165301B (en) * | 2017-07-07 | 2019-02-05 | 西京学院 | A kind of magnetorheological piezoelectricity vibration isolating suspension of controllable intellectualized |
| CN111764497A (en) * | 2020-06-23 | 2020-10-13 | 淮阴工学院 | Active anti-seismic house structure |
| CN112483539A (en) * | 2020-10-19 | 2021-03-12 | 南京航空航天大学 | Intelligent elastic bearing and control method |
| CN114562051A (en) * | 2022-03-25 | 2022-05-31 | 魏陈熙 | Networked building vibration isolation support with adjustable damping assembly and system |
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| Publication number | Publication date |
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| CN105889381B (en) | 2017-12-26 |
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