CN105735506A - Extrusion type automatic resetting magnetic shape memory alloy damper - Google Patents
Extrusion type automatic resetting magnetic shape memory alloy damper Download PDFInfo
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- CN105735506A CN105735506A CN201610134668.4A CN201610134668A CN105735506A CN 105735506 A CN105735506 A CN 105735506A CN 201610134668 A CN201610134668 A CN 201610134668A CN 105735506 A CN105735506 A CN 105735506A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0215—Bearing, supporting or connecting constructions specially adapted for such buildings involving active or passive dynamic mass damping systems
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Abstract
The invention relates to an extrusion type automatic resetting magnetic shape memory alloy damper. The extrusion type automatic resetting magnetic shape memory alloy damper comprises connecting plates, an end sealing plate, a guide plate, a constraint barrel, a control unit, a core guide rod and a guide sealing plate. The connecting plates are connected to the two ends of the constraint barrel. The end sealing plate is arranged at one end of the constraint barrel. The core guide rod is arranged inside the constraint barrel. The guide plate and the guide sealing plate are arranged at the two ends of the core guide rod. The extrusion type automatic resetting magnetic shape memory alloy damper has the advantages of multiple working states, automatic resetting, high response frequency, high damping capacity, stable performance and the like.
Description
Technical field
The present invention is a kind of intelligent controlling device for vibration control of civil engineering structure field, control for the safety under dynamic disaster effect and comfort level, belong to the technical field that civil engineering structure passive energy dissipation controls, be specifically related to a kind of extrusion pressing type Self-resetting magnetic shape memory alloy antivibrator.
Background technology
Structural vibration reduction controls by rationally arranging damping absorption device in the structure, efficiently controls the vibratory response of structure, makes the structure every response value under earthquake, strong wind or other dynamic interference effects be controlled in allowed band.It, for improving the antidetonation of civil engineering structure, wind loading rating, reduces structural vibration response, reduces casualty loss, meets structural safety and uses functional requirement, having great importance.In recent years, the important directions developing into structural vibration reduction control of intellectual material and structure, people utilize electric/magnetic rheological liquid, shape memory alloy material, piezoelectric and electro magnetic to cause all kinds of passive, actively and half damping device actively of the intelligent drives material developments such as telescopic material.Such as high output MR damper (CN101215860A), the MR damper (CN204985491U) of a kind of integrated energy regenerative, multilayer barrel type piezoelectric friction damper (CN2014126074U), shape memory alloy self-resetting multi-dimensional shock insulation support (CN102296702B), a kind of gear type re-centring damper (CN104912228A) etc. based on SMA material.But, temperature control marmem response speed is slow, MR damper utilizes magnetic rheological liquid to require higher to the processing and fabricating of device, and piezoelectric is then mainly used as auxiliary material in antivibrator, causes that these antivibrators are difficult to intellectuality truly.
Magnetic shape memory alloy (MagneticShapeMemoryAlloy, it is abbreviated as MSMA) not only there is shape memory effect and super-elasticity that martensitic phase transformation causes, and there is martensite variants and redirect the mangneto shape memory effect and super-elasticity that cause.It has the feature that piezoelectric ceramics and magnetostriction materials response frequency are fast, temperature control marmem output strain and stress is big concurrently, is one of the hot topic of intellectual material research.It has had more device to research and develop in fields such as machinery, sensings, such as devices such as magnetically controlled shape memory alloys self-sensing actuator (CN101620412A), differential-mode magnetic control shape memory alloy actuator (CN1633021A), magnetic control shape memery alloy crawling type linea motor (CN1474504A), a kind of high-frequency drive devices (CN202798522U).In recent years, also the research and development in some principles have been had, actuator (CN102359198A) as flexible in magnetic control shape memory alloy, based on the constructure shakeproof system of magnetic control shape memory alloy and induction control method (CN103382743A) thereof etc. at field of vibration control.But, restriction due to the fragility of material and current process technology, magnetic shape memory alloy material mostly is less block, it is difficult to the component form that the yardsticks such as processing filamentation material, bar are bigger, it is adaptable to the large tonnage magnetic shape memory alloy antivibrator of civil engineering structure is comparatively rare.
Therefore, make full use of magnetic shape memory alloy from height response frequency, big output displacement and the advantage such as automatically reset, by suitable tectonic sieving to avoid its defect in processing characteristics, develop a kind of large-tonnage intelligent damper being adapted to civil engineering structure and there is certain practical significance.
Summary of the invention
It is an object of the invention to overcome prior art Problems existing, a kind of extrusion pressing type Self-resetting magnetic shape memory alloy antivibrator is provided, make full use of the pyromagnetic mechanical property of magnetic shape memory alloy, there is certain output tonnage and multiple duty, antivibrator suitable in civil engineering structure, for civil engineering structure passive energy dissipation under dynamic disaster effect, this antivibrator is at no power, when a small amount of energy and the enough energy, it is able to realize passively, half function actively and actively controlled, hardware foundation is provided for real intelligentized control method, simultaneously, the super-elasticity special due to magnetic shape memory alloy and shape memory effect, auto-reset function after being capable of shaking.
For realizing above-mentioned technical purpose, reaching above-mentioned technique effect, the present invention is achieved through the following technical solutions:
Extrusion pressing type Self-resetting magnetic shape memory alloy antivibrator, including connecting plate, end-plate, guide plate, about bundled tube, control unit, core guide rod and guiding shrouding, described connecting plate is connected to the two ends of described about bundled tube, and one end of described about bundled tube is provided with described end-plate, being provided with described core guide rod inside described about bundled tube, the two ends of described core guide rod are provided with guide plate and described guiding shrouding.
Further, described core guide rod is made up of core board and trigonal slider.
Further, the inclined-plane of the trigonal slider of described core board is symmetrically distributed with some control units.
Preferably, described control unit is formed by extruding shell, non-magnetic shell, permanent magnet, coil, magnetic shape memory alloy block and power transmission guide rod, and described extruding valve jacket, and can the changing of the relative positions mutually at described non-magnetic outer side.
Further, described magnetic shape memory alloy block can adopt Ni2MnGa、Ni2The magnetic shape memory alloys such as FeGa or composite.
Beneficial effects of the present invention:
The present invention is as a kind of dissipative damping device, it is possible to effectively controls civil engineering structure response under dynamic load function, protects agent structure.This device takes full advantage of super-elasticity and the magnetic shape memory effect of magnetic shape memory alloy block by constructing, passive self-resetting metal damper is shown as during no power, show as half active self-resetting metal damper during the energising of a small amount of energy, show as during the energising of the enough energy and actively control actuator and positor.This antivibrator has taken into full account that current magnetic shape memory alloy is more crisp, has been only capable of making the processing characteristics such as small size component, advantages such as having multiple working conditions, automatically reset, response frequency is high, damping capacity is strong, performance is relatively stable.
Accompanying drawing explanation
Fig. 1 is the schematic appearance of extrusion pressing type Self-resetting magnetic shape memory alloy antivibrator of the present invention；
Fig. 2 is the 1-1 cross-sectional view of extrusion pressing type Self-resetting magnetic shape memory alloy antivibrator of the present invention；
Fig. 3 is the 2-2 cross-sectional view of extrusion pressing type Self-resetting magnetic shape memory alloy antivibrator of the present invention；
Fig. 4 (a) is the 3-3 cross-sectional view of extrusion pressing type Self-resetting magnetic shape memory alloy antivibrator of the present invention；
Fig. 4 (b) is the 4-4 cross-sectional view of extrusion pressing type Self-resetting magnetic shape memory alloy antivibrator of the present invention；
Fig. 5 is the control unit structural representation detail drawing of extrusion pressing type Self-resetting magnetic shape memory alloy antivibrator of the present invention.
Number in the figure illustrates: 1, connecting plate, 2, end-plate, 3, guide plate, 4, about bundled tube, 5, control unit, 51, spring, 52, magnetic conduction backing plate, 53, coil, 54, permanent magnet, 55, magnetic shape memory alloy block, 6, core guide rod, 61, core board, 62, trigonal slider, 7, guiding shrouding, 8, core guide rod.
Detailed description of the invention
Below with reference to the accompanying drawings and in conjunction with the embodiments, the present invention is described in detail.
With reference to shown in Fig. 1-Fig. 5, extrusion pressing type Self-resetting magnetic shape memory alloy antivibrator, including connecting plate 1, end-plate 2, guide plate 3, about bundled tube 4, control unit 5, core guide rod 6 and guiding shrouding 7, described connecting plate 1 is connected to the two ends of described about bundled tube 4, one end of described about bundled tube 4 is provided with described end-plate 2, and described about bundled tube 4 is internal is provided with described core guide rod 6, and the two ends of described core guide rod 6 are provided with guide plate 3 and described guiding shrouding 7.
Further, described core guide rod 6 is made up of core board 61 and trigonal slider 62.
Further, the inclined-plane of the trigonal slider 62 of described core board 61 is symmetrically distributed with some control units 5.
Preferably, described control unit 5 is made up of extruding shell 51, non-magnetic shell 52, permanent magnet 53, coil 54, magnetic shape memory alloy block 55 and power transmission guide rod 56, and described extruding shell 51 is enclosed within outside described non-magnetic shell 52, and can the changing of the relative positions mutually.
Further, described magnetic shape memory alloy block 55 can adopt Ni2MnGa、Ni2The magnetic shape memory alloys such as FeGa or composite, produce the various control patterns such as passive super-elasticity, half active variable damping and active control by the superelastic effect of magnetic shape memory alloy block (55) and mangneto shape memory effect.
Preferably, described about bundled tube 4 is generally box section, and the conduit arranging wire is reserved in inner side, and has enough rigidity to retrain control unit, can add ribbed stiffener at inner side suitable position if desired.
Principles of the invention:
Relative motion is there is when the connecting plate 1 at antivibrator two ends is with structure cooperation, thus push-and-pull core guide rod 6, make the axially opposed motion of trigonal slider 62 of core guide rod 6, extruding control unit 5 radially produces relative displacement along antivibrator, but owing to outer slide is produced radial constraint effect by control unit 5, making to produce interaction force on extruding shell 51 and the contact surface of trigonal slider 62, the power output of antivibrator is exactly be made up of the axial thrust load of this active force.Antivibrator core guide rod 6 moves along a direction, the control unit 5 of trigonal slider 62 side plays a role, opposite side does not play a role, the base angle angle adjustable damper displacement of adjusting triangle shape slide block 62 and magnetic shape memory alloy block 55 deformation between relation, constitute displacement equations, etc. the conversion regime such as displacement, displacement reduction.
During no power, utilizing the super-elasticity of magnetic shape memory alloy block 55, when thin tail sheep, magnetic shape memory alloy block 55 does not occur martensite to redirect, and antivibrator only provides rigidity to structure；When big displacement, magnetic shape memory alloy block 55 there occurs that martensite redirects, and rigidity greatly reduces, and starts hyperelastic hysteretic phenomenon, provides damping energy dissipation by Internal Friction of Metals；After vibration terminates, due to the superelastic effect of magnetic shape memory alloy block 55, it is possible to restPose, so that antivibrator resets.
During the energising of a small amount of energy, utilize under different a small amount of magnetic field, the change of the super-elasticity phase transformation initial stress (yield stresses of similar general steel) of magnetic shape memory alloy block 55, enter half controlled state actively.When thin tail sheep, energising changes magnetic shape memory alloy block 55 state in trigonal slider 62 side control unit 5 in part control unit 5, can change the rigidity of antivibrator；When big displacement, according to calculating required optimum yield force, energising changes the phase transformation initial stress of magnetic shape memory alloy block 55 in the control unit of side simultaneously；After vibration terminates, due to the superelastic effect of magnetic shape memory alloy block 55, it is possible to restPose, so that antivibrator resets.
During the energising of the enough energy, utilize under enough magnetic field, the magnetic shape memory effect of magnetic shape memory alloy block 55, enter the active control state of Self-resetting.During structural vibration, according to controlling to calculate required power supply, energising changes the state of magnetic shape memory alloy block 55 in trigonal slider 62 side control unit 5 in real time, and extrudes core guide rod 6 and export damping force, it is achieved the active of structure is controlled.After vibration terminates, utilizing the magnetic shape memory effect of magnetic shape memory alloy block 55, energising makes structure reset.
Specific embodiment of the invention step:
(1) structure is analyzed, calculates required damper designs parameter, determine therefrom that antivibrator is about bundled tube 4 cross section, control unit 5 size and the design parameter such as number, core guide rod 6 size.
(2) magnetic shape memory alloy block 55 is made according to design parameter, outside it, make skeleton and wrap up coil 54, permanent magnet 53 is installed outside coil 54, non-magnetic shell 52 is wrapped up in these parts externals, power transmission guide rod 56 is installed at magnetic shape memory alloy block 55 top, power transmission guide rod 56 is firmly connected with extruding shell 51, and extruding shell 51 part is enclosed within outside non-magnetic shell 52, complete the making of control unit 5；Can pass through adjusting of permanent magnet 53 is regulated initial preloading condition, control the antivibrator mechanical characteristic under non-power status.
(3) according to the core board 61 of design parameter processing core guide rod 6 and trigonal slider 62, and both being fixed together, the side end at core board 61 opens bolt hole, as the connecting plate 1 of side；The contact surface of extruding shell 51 and trigonal slider 62 is processed, can process as required as smooth flat or rubbing surface.
(4) steel plate completing about 4 three faces of bundled tube is assembled, inserts guide plate 3 and guiding shrouding 7 by remaining one side, and is welded and fixed；Pressing design attitude subsequently and insert core guide rod 6, at core guide rod 6 with about install control unit 5 between bundled tube 4, and by the non-magnetic shell 52 of control unit 5 with about bundled tube 4 is affixed, the wire of control unit 5 is reserved conduit by about bundled tube 4 and is caused about outside bundled tube 4；The steel plate of residue one side is installed, and is welded to connect with two adjacent surfaces, be welded to connect with guide plate 3 and guiding shrouding 7 simultaneously.
(5) last, installation end shrouding 2, and outside end-plate 2, it is welded to connect plate 1, also by end-plate 2 and connecting plate 1 overall processing molding, the overall package of antivibrator can be finally completed.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (5)
1. extrusion pressing type Self-resetting magnetic shape memory alloy antivibrator, it is characterized in that, including connecting plate (1), end-plate (2), guide plate (3), about bundled tube (4), control unit (5), core guide rod (6) and guiding shrouding (7), described connecting plate (1) is connected to the two ends of described about bundled tube (4), one end of described about bundled tube (4) is provided with described end-plate (2), described about bundled tube (4) is internal is provided with described core guide rod (6), the two ends of described core guide rod (6) are provided with guide plate (3) and described guiding shrouding (7).
2. extrusion pressing type Self-resetting magnetic shape memory alloy antivibrator according to claim 1, it is characterised in that described core guide rod (6) is made up of core board (61) and trigonal slider (62).
3. extrusion pressing type Self-resetting magnetic shape memory alloy antivibrator according to claim 2, it is characterised in that be symmetrically distributed with some control units (5) on the inclined-plane of the trigonal slider (62) of described core board (61).
4. extrusion pressing type Self-resetting magnetic shape memory alloy antivibrator according to claim 3, it is characterized in that, described control unit (5) is made up of extruding shell (51), non-magnetic shell (52), permanent magnet (53), coil (54), magnetic shape memory alloy block (55) and power transmission guide rod (56), described extruding shell (51) is enclosed within described non-magnetic shell (52) outside, and can the changing of the relative positions mutually.
5. extrusion pressing type Self-resetting magnetic shape memory alloy antivibrator according to claim 4, it is characterised in that described magnetic shape memory alloy block (55) can adopt Ni2MnGa、Ni2The magnetic shape memory alloys such as FeGa or composite.
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| CN201610134668.4A CN105735506B (en) | 2016-03-10 | 2016-03-10 | Extrusion pressing type Self-resetting magnetic shape memory alloy damper |
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| CN201610134668.4A CN105735506B (en) | 2016-03-10 | 2016-03-10 | Extrusion pressing type Self-resetting magnetic shape memory alloy damper |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086772A (en) * | 2018-02-01 | 2018-05-29 | 山东大学 | Re-centring damper based on buckling-restrained shape memory alloy bar |
| CN109972892A (en) * | 2019-03-12 | 2019-07-05 | 苏州科技大学 | Magnetic shape memory alloy intelligence Self-resetting buckling restrained bracing |
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| CN101654935A (en) * | 2009-04-25 | 2010-02-24 | 大连理工大学 | Shape memory alloy (SMA) self-resetting deformation energy-consumption damper |
| CN103291797A (en) * | 2013-03-15 | 2013-09-11 | 尹学军 | Friction damper |
| WO2014110582A1 (en) * | 2013-01-14 | 2014-07-17 | Aujaghian Damir | Sliding seismic isolator |
| CN104264858A (en) * | 2014-10-28 | 2015-01-07 | 沈阳建筑大学 | Crossly and oppositely rotating self-reset lead extruding damper |
| CN104763069A (en) * | 2015-03-27 | 2015-07-08 | 燕山大学 | SMA-piezoelectric frictional combined damper |
| CN205502280U (en) * | 2016-03-10 | 2016-08-24 | 苏州科技学院 | Extrusion type is from restoring to throne magnetism shape memory alloy attenuator |
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2016
- 2016-03-10 CN CN201610134668.4A patent/CN105735506B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101654935A (en) * | 2009-04-25 | 2010-02-24 | 大连理工大学 | Shape memory alloy (SMA) self-resetting deformation energy-consumption damper |
| WO2014110582A1 (en) * | 2013-01-14 | 2014-07-17 | Aujaghian Damir | Sliding seismic isolator |
| CN103291797A (en) * | 2013-03-15 | 2013-09-11 | 尹学军 | Friction damper |
| CN104264858A (en) * | 2014-10-28 | 2015-01-07 | 沈阳建筑大学 | Crossly and oppositely rotating self-reset lead extruding damper |
| CN104763069A (en) * | 2015-03-27 | 2015-07-08 | 燕山大学 | SMA-piezoelectric frictional combined damper |
| CN205502280U (en) * | 2016-03-10 | 2016-08-24 | 苏州科技学院 | Extrusion type is from restoring to throne magnetism shape memory alloy attenuator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086772A (en) * | 2018-02-01 | 2018-05-29 | 山东大学 | Re-centring damper based on buckling-restrained shape memory alloy bar |
| CN109972892A (en) * | 2019-03-12 | 2019-07-05 | 苏州科技大学 | Magnetic shape memory alloy intelligence Self-resetting buckling restrained bracing |
| CN109972892B (en) * | 2019-03-12 | 2024-04-16 | 苏州科技大学 | Intelligent self-resetting constraint buckling support made of magnetic shape memory alloy |
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