CN100417773C - High lossing energy composite magnetorheopectic damping device - Google Patents
High lossing energy composite magnetorheopectic damping device Download PDFInfo
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- CN100417773C CN100417773C CNB2006100852581A CN200610085258A CN100417773C CN 100417773 C CN100417773 C CN 100417773C CN B2006100852581 A CNB2006100852581 A CN B2006100852581A CN 200610085258 A CN200610085258 A CN 200610085258A CN 100417773 C CN100417773 C CN 100417773C
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Abstract
The present invention relates to a high energy consumption composite magnetic rheological damper which can be used for the vibration control of the structure of civil engineering; the composite damper has high energy consumption and can supply variable damping force. Both ends of a working cylinder (11) of the magnetic rheological damper are respectively connected with working cylinders of lead dampers by the present invention; both ends in the working cylinder of the magnetic rheological damper are provided with magnetic rheological bodies (10); a major diameter part of the middle of a piston connecting rod (4) is positioned in the working cylinder of the magnetic rheological damper; electromagnetic solenoids are arranged on the circumference of the major diameter part of the middle of the piston connecting rod; the inner parts of the working cylinders of the lead dampers are provided with lead (6); the left end of the piston connecting rod (4) passes through the working cylinders of the lead dampers and is connected with a connector (1); the right end of the piston connecting rod (4) passes through the working cylinders of the lead dampers and freely extends out in small cylinders at the right ends of the working cylinders of the lead dampers; the parts of the piston connecting rod, which are positioned in the working cylinders of the lead dampers, are respectively provided with piston rod bulges (5); the working cylinder of the lead damper at the right end is connected with the connector (1).
Description
Technical field
The present invention is a kind of damper that is used for civil engineering structure antidetonation (shaking), especially a kind of composite buffer that variable damping force can be provided of highly energy-consuming.
Background technology
Along with the development of country, the raising of life, importance structures such as high building structure, tall and slender structure, large span spatial structure grow with each passing day.Under dynamic loading (as wind and earthquake) effect, bigger vibration can take place in these structures, has influence on the normal use and the safety of structure.And China is many earthquakes country, and national most of big and medium-sized cities are in the earthquake zone, and the antidetonation of therefore relevant civil structure and vibration damping problem are more apparent outstanding, and the research that this class formation is carried out vibration isolation has important and realistic meanings.Structural vibration control can alleviate reaction and the damage of structure under wind and geological process effectively, improves the shock resistance of structure and the performance of taking precautions against natural calamities effectively.Vibration isolation can come earthquake energy by vibration damping, earthquake isolating equipment, perhaps apply outside energy to offset the influence of geological process to structure, concrete by some position in structure, install certain device, mechanism or minor structure, to change or adjustment dynamic Characteristics of Structure or dynamic action, make structure earthquake or wind bestir oneself with under dynamic response reasonably controlled, guarantee that structure itself reaches the safety of people in the structure, instrument, equipment etc. and is in normal environment for use situation.
Magnetic rheological body is a kind of intellectual material of function admirable, can change the higher visco-plastic body of shear yielding ability into from Newtonian fluid in moment under the effect in magnetic field, and this transformation continuous reversible.MR damper be use magnetic rheological body under high-intensity magnetic field quick reversible rheological behavior and a kind of novel vibrating control device of making.Have simple in structure, accelerate mutually, damping force is big and advantage such as adjustable continuously.Practical distortion and outside earthquake (wind shakes) excitation according to structure, according to specific control law, the control externally-applied magnetic field is with the mechanical property of change MR damper, thereby the characterisitic parameter of change structural system is so that structure reaches best control effect in moment.
Lead is to make the common metal that the accumulated fatigue phenomenon can not take place the plasticity circulation time under only in theory a kind of room temperature, has characteristics such as plasticity height, rigidity are low, high damping force.Simultaneously, have bigger energy dissipation capacity, make lead become energy dissipating, damping and shockproof excellent materials owing to plumbously have rigidity after bigger initial stiffness and the less surrender.
Exploitation energy consumer and damper are to utilize single energy consume mechanism or single dissipative cell and material power consumption mostly both at home and abroad at present, and the damping force and the initial stiffness that are provided are limited.Therefore required energy consumer (damper) quantity is more, arranges trouble, and construction sequence and cycle increase, and influence building usage space.Seepage takes place in magnetic rheological body in the MR damper easily in vibration processes simultaneously, and it is the major issue that the puzzlement MR damper obtains extensive use that the sealing problem of magnetic rheological body and magnetic rheological body cost an arm and a leg always.
Summary of the invention
Technical problem: the objective of the invention is to develop a kind of highly energy-consuming, simple structure, cheap, easy installation and removal, applied widely, damping effect is remarkable and high lossing energy composite magnetorheopectic damping device with good seal performance.
Technical scheme: high lossing energy composite magnetorheopectic damping device of the present invention, form by shrouding behind sealing plate, the lead damper after sealing plate, sealing ring, magnetic rheological body, MR damper working cylinder, o liquid injection hole, the MR damper before shrouding, lead damper working cylinder, piston rod, piston rod projection, lead, the plumbous hole of notes, the MR damper before connector, the lead damper.This device sealing plate after sealing plate, the MR damper before the two ends of MR damper working cylinder are connected with MR damper respectively, two ends in the MR damper working cylinder are provided with magnetic rheological body, major diameter in the middle of the piston rod partly is arranged in the MR damper working cylinder, is provided with o on the circumference of the major diameter part in the middle of piston rod; The lead damper working cylinder has two, lay respectively at the two ends of MR damper working cylinder, inside at the lead damper working cylinder is provided with lead, shrouding before the two ends of lead damper working cylinder are respectively by lead damper, sealing plate after sealing plate or the MR damper before the MR damper, shrouding sealing behind the lead damper, the piston rod left end passes the lead damper working cylinder and connector joins, it is free overhanging in the little cylinder body of lead damper working cylinder right-hand member that the piston rod right-hand member passes the lead damper working cylinder, the part that piston rod is positioned at the lead damper working cylinder is respectively equipped with the piston rod projection, and the lead damper working cylinder and the connector of right-hand member join.On the lead damper working cylinder, be provided with and annotate plumbous hole, on the MR damper working cylinder, be provided with liquid injection hole.Before MR damper, be provided with sealing ring in the endoporus of sealing plate after sealing plate, the MR damper.
Under earthquake or high wind effect, when structure produces relative deformation, be installed in the structure damper and follow the generation relative deformation, size by electric current in the o in the adjustment high lossing energy composite magnetorheopectic damping device changes magnetic field intensity, thereby change the resistance of fluid, form a kind of adjustable semi-automatic control device.Relative deformation owing to damper is simultaneously consumed energy the lead generation extruding hysteresis distortion in the damper.Reasonable coupling by MR damper and lead damper be connected, the high lossing energy composite magnetorheopectic damping device of exploitation can satisfy various engineering wind resistance antidetonation needs, damping effect brilliance.
The structure of high lossing energy composite magnetorheopectic damping device is housed, when externally excitation causes the relative deformation of damper, MR damper part and the collaborative work of lead damper part, the magnetic coil energising, the part magnetic rheological body solidifies provides damping force, plumbous extruding surrender, enter the hysteretic energy state, the dissipation seismic energy reduces response of structure, thereby makes agent structure not produce destruction.
Beneficial effect: high lossing energy composite magnetorheopectic damping device of the present invention adopts two kinds of mechanism combinations of half ACTIVE CONTROL and passive power consumption vibration dampings, has highly energy-consuming, simple structure, cheap, easy installation and removal, applied widely, advantage that damping effect is remarkable; Magnetorheological damping cylinder two ends are provided with plumbous damped cylinder, can effectively prevent magnetic flow liquid seepage in the working cylinder; When equal damping force is provided, compare with pure MR damper, saved the damper cost widely.Add this damper in the structure, can increase the damping and the rigidity of structure, improve the ability of structure opposing external force, reduce seismic response.This damper can be widely used in the wind resistance earthquake-proof construction of high building structure, tall and slender structure, large span spatial structure and bridge construction.
Utilize two kinds of machine-processed combined shock absorptions of the rheological behavior of magnetic flow liquid and plumbous shear extrusion hysteresis distortion, brought into play the advantage of two kinds of shock absorbing mechanisms, existing very high energy dissipation capacity can provide the damping force of enough continuous variable again.When equal damping force is provided, compare with pure MR damper, saved the damper cost widely.
The cylinder body two ends of splendid attire magnetic flow liquid can effectively be prevented the seepage of magnetic flow liquid by the sealing of the cylinder body of splendid attire lead, and endurance quality is good.
Description of drawings
Fig. 1 is a cross-sectional view of the present invention.
Have among the figure: shrouding 15 behind sealing plate 14, the lead damper after connector 1, the preceding shrouding 2 of lead damper, lead damper working cylinder 3, piston rod 4, piston rod projection 5, lead 6, the plumbous hole 7 of notes, the preceding sealing plate 8 of MR damper, sealing ring 9, magnetic rheological body 10, MR damper working cylinder 11, o 12, liquid injection hole 13, the MR damper.
The specific embodiment
High lossing energy composite magnetorheopectic damping device of the present invention is partly combined by MR damper part and lead damper.The MR damper part partly is made up of sealing plate 14, sealing ring 9, magnetic rheological body 10, o 12, liquid injection hole 13 etc. after sealing plate 8, the MR damper before MR damper working cylinder 11, the MR damper.The lead damper part mainly is made up of lead damper working cylinder 3, piston rod 4, piston rod projection 5, lead 6, the plumbous hole 7 of notes and two end-plates.Before the MR damper after sealing plate 8 and the MR damper sealing plate 14 with lead damper working cylinder 3 and MR damper working cylinder 11 firm be connected in aggregates, not only can make the lead damper at MR damper and two ends when use, be out of shape consistent, the damping force that varies in size is provided, and can effectively prevents the seepage of magnetic rheological body 10.
This device sealing plate 14 after sealing plate 8, the MR damper before the two ends of MR damper working cylinder 11 are connected with MR damper respectively, two ends in MR damper working cylinder 11 are provided with magnetic rheological body 10, major diameter in the middle of the piston rod 4 partly is arranged in MR damper working cylinder 11, is provided with o 12 on the circumference of the part of the major diameter in the middle of the piston rod 4; Lead damper working cylinder 3 has two, lay respectively at the two ends of MR damper working cylinder 11, be provided with in the inside of lead damper working cylinder 3 plumbous 6, shrouding 15 sealings behind sealing plate 14, the lead damper after sealing plate 8 or the MR damper before shrouding 2, the MR damper before the two ends of lead damper working cylinder 3 are respectively by lead damper; Piston rod 4 left ends pass lead damper working cylinder 3 and join with connector 1, it is free overhanging in the little cylinder body of lead damper working cylinder 3 right-hand members that piston rod 4 right-hand members pass lead damper working cylinder 3, the part that piston rod 4 is positioned at lead damper working cylinder 3 is respectively equipped with piston rod projection 5, and the lead damper working cylinder 3 and the connector 1 of right-hand member join; On lead damper working cylinder 3, be provided with and annotate plumbous hole 7, on MR damper working cylinder 11, be provided with liquid injection hole 13; Before MR damper, be provided with sealing ring 9 after sealing plate 8, the MR damper in the endoporus of sealing plate 14.Coil on the o 12 adopts the winding around horizontal axis, and the magnetic field in magnetic rheological body 10 passages evenly and the axis normal of direction and this damper.
Between MR damper working cylinder 11 and piston rod 4, there is damp channel, be generally 0.8～2.0mm, when piston rod 4 is made reciprocal linear relative movement in MR damper working cylinder 11, when the magnetic rheological body 10 of extruding inner chamber forces it to flow through the damping gap, under the energising situation, 10 moments of magnetic rheological body are changed sticking plastomer into by Newtonian fluid in the damp channel, and the flow resistance that makes fluid increases when not switching on, and produces the damping-force adjustable of MR damper.
In lead damper, piston rod projection 5 and casing wall form extrusion mouth, when piston rod 4 lead damper working cylinder 3 in during relative motion, lead 6 is extruded by extrusion mouth and produces plasticity crimp, dissipation energy.
The damping force of MR damper and lead damper can be selected different numerical value according to concrete structure, and the damping force scope of MR damper is generally 0 to 300KN, and the input current scope is generally 0 to 6 ampere.The damping force scope 0 to 500KN of lead damper.In concrete structural vibration reduction Control Engineering, can take all factors into consideration the characteristic and the damping requirement of structure, the displacement of the consumption of appropriate design magnetic rheological body and lead, coil turn, piston reaches ideal control effect.
Claims (2)
1. high lossing energy composite magnetorheopectic damping device, it is characterized in that this device sealing plate (14) after sealing plate (8), the MR damper before the two ends of MR damper working cylinder (11) are connected with MR damper respectively, magnetic rheological body (10) is housed in MR damper working cylinder (11), major diameter in the middle of the piston rod (4) partly is arranged in MR damper working cylinder (11), is provided with o (12) on the circumference of the major diameter part in the middle of piston rod (4); Lead damper working cylinder (3) has two, lay respectively at the two ends of MR damper working cylinder (11), be provided with lead (6) in the inside of lead damper working cylinder (3), shrouding (2) before the two ends of lead damper working cylinder (3) are respectively by lead damper, sealing plate (14) after sealing plate (8) or the MR damper before the MR damper, shrouding behind the lead damper (15) sealing, piston rod (4) left end passes lead damper working cylinder (3) and joins with connector (1), it is free overhanging in the little cylinder body of lead damper working cylinder (3) right-hand member that piston rod (4) right-hand member passes lead damper working cylinder (3), the part that piston rod (4) is positioned at lead damper working cylinder (3) is respectively equipped with piston rod projection (5), and the lead damper working cylinder (3) of right-hand member joins with connector (1).
2. high lossing energy composite magnetorheopectic damping device according to claim 1 is characterized in that coil on the o (12) adopts the winding around horizontal axis, and the magnetic field in magnetic rheological body (10) passage evenly and the axis normal of direction and this damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100852581A CN100417773C (en) | 2006-06-07 | 2006-06-07 | High lossing energy composite magnetorheopectic damping device |
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| CNB2006100852581A CN100417773C (en) | 2006-06-07 | 2006-06-07 | High lossing energy composite magnetorheopectic damping device |
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| CN1861927A CN1861927A (en) | 2006-11-15 |
| CN100417773C true CN100417773C (en) | 2008-09-10 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215861B (en) * | 2007-12-28 | 2010-09-29 | 天津大学 | Damping force bidirectionally regulating MR damper |
| CN101793302A (en) * | 2010-03-18 | 2010-08-04 | 河海大学 | Three-cylinder type large-capacity magneto-rheological damper |
| CN101806104B (en) * | 2010-03-31 | 2011-08-31 | 东南大学 | Suspended frequency modulation mass damper |
| CN103942394B (en) * | 2014-04-25 | 2017-02-15 | 郑州大学 | Amplitude limiting optimizing method based on magneto-rheological damper |
| CN105696720B (en) * | 2016-01-26 | 2018-01-12 | 广州大学 | A kind of structure electromagnetism variable damping master passively controls compound tuning control system |
| CN105780958B (en) * | 2016-02-15 | 2018-08-17 | 沈阳建筑大学 | A method of anti-impact vibration damping is carried out using STF and MRF combined type anti-impact oscillation damping and energy dissipating dampers |
| CN105735507B (en) * | 2016-03-10 | 2018-01-30 | 苏州科技学院 | A kind of tension and compression type magnetic shape memory alloy Multimode Intelligent damper |
| CN106836546B (en) * | 2017-03-31 | 2019-03-19 | 西京学院 | A kind of half active friction energy consumer of magnetic control |
| CN109779060B (en) * | 2019-01-31 | 2024-05-24 | 郑州大学 | Lead extrusion magneto-rheological combined energy consumption device |
| CN110528717B (en) * | 2019-09-06 | 2021-03-23 | 武汉理工大学 | Inclined strut damper based on magnetorheological elastomer |
| CN115419185B (en) * | 2022-09-23 | 2024-02-02 | 北京固力同创工程科技有限公司 | Real-time monitoring intelligent seismic reduction and isolation system and control method |
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Patent Citations (4)
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| CN2327837Y (en) * | 1998-03-30 | 1999-07-07 | 周云 | Superplastic alloy cylinder buffer |
| WO2003052288A1 (en) * | 2001-12-17 | 2003-06-26 | Maurer Söhne Gmbh & Co. Kg | Energy absorption device |
| CN1624264A (en) * | 2004-12-13 | 2005-06-08 | 东南大学 | High performance composite shock absorber |
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Non-Patent Citations (2)
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| CN1861927A (en) | 2006-11-15 |
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Granted publication date: 20080910 Termination date: 20110607 |