CN205502279U - Mangneto shape memory alloy retrains friction damper with from reset function - Google Patents
Mangneto shape memory alloy retrains friction damper with from reset function Download PDFInfo
- Publication number
- CN205502279U CN205502279U CN201620181500.4U CN201620181500U CN205502279U CN 205502279 U CN205502279 U CN 205502279U CN 201620181500 U CN201620181500 U CN 201620181500U CN 205502279 U CN205502279 U CN 205502279U
- Authority
- CN
- China
- Prior art keywords
- shape memory
- memory alloy
- outer slide
- nut
- core guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Vibration Prevention Devices (AREA)
- Vibration Dampers (AREA)
Abstract
The utility model relates to a mangneto shape memory alloy retrains friction damper with from reset function, including flange, coupling nut, the cylinder, middle spigot nut, the control unit, the outer slide seals spigot nut, the core guide arm, flange sets up the both ends of attenuator, one end flange with coupling nut connects, the other end flange with the core guide arm is connected, coupling nut installs a cylinder cavity side end, the core guide arm is established inside the cylinder, core guide arm outside parcel has the outer slide, the outside of outer slide is equipped with a plurality of the control unit, the both ends of outer slide are equipped with respectively middle spigot nut with seal spigot nut. The utility model has the advantages of the damping capacity is strong, the recoverable deformation is big, the performance is stable, multiple operating condition freely switches.
Description
Technical field
This utility model is a kind of intelligent controlling device for vibration control of civil engineering structure field, builds for high level
Build, the safety under dynamic disaster effect of large span architecture, bridge structure and other civil engineering structures and comfort level control, and belong to
In the technical field that civil engineering structure passive energy dissipation controls, it is specifically related to a kind of mangneto shape memory with Self-resetting function
Alloy constraint frcition damper.
Background technology
Structural vibration reduction controls by the most rationally arranging damping absorption device, and the vibration efficiently controlling structure rings
Should, make the structure every response value under earthquake, strong wind or other dynamic interference effects be controlled in allowed band.It for
Improve the antidetonation of civil engineering structure, wind loading rating, reduce structural vibration response, reduce casualty loss, meet structural safety and
Use functional requirement, have great importance.Frcition damper, as one of damping technology that is relatively early studied and that apply, has
Many advantages such as simple structure, easy for installation, energy dissipation capacity is good, therefore become a kind of dissipative damping device conventional in engineering.
Conventional friction antivibrator, Pall frcition damper, Sumitomo frcition damper, slide type elongated hole bolt joint has been had to hinder
The various ways such as Buddhist nun's device, piezoelectric intelligent frcition damper, but these frcition dampers generally do not have the function of Self-resetting, when
After structure enters plastic deformation, antivibrator is difficult to make structure be returned to original geometry state, and restriction is tied by bigger residual deformation
The ability repaired after structure calamity.
In recent years, intellectual material and structure develop into the important directions that structural vibration reduction controls, people utilize electricity/
Magnetic rheological liquid, shape memory alloy material, piezoelectric and electro magnetic cause all kinds of quilts of intelligent drives material development such as telescopic material
Dynamic, actively and half damping device actively.Magnetic shape memory alloy (Magnetic Shape Memory Alloy, letter
It is written as MSMA) not only there is shape memory effect and super-elasticity that martensitic phase transformation causes, and there is martensite variants and reset
To the mangneto shape memory effect caused and super-elasticity.It has piezoelectric ceramics concurrently and magnetostriction materials response frequency is fast and temperature control
The feature that marmem output strain and stress is big, and have sensing concurrently and drive function, at scientific research and engineer applied
In have broad prospects, be one of the hot topic of intellectual material research.More device has been had in fields such as machinery, sensings
Research and development, as magnetically controlled shape memory alloys self-sensing actuator (CN 101620412 A), differential-mode magnetic control shape memory alloy are held
Row device (CN 1633021 A), magnetic control shape memery alloy crawling type linea motor (CN 1474504 A), a kind of high-frequency drive
The devices such as device (CN 202798522 U).In recent years, also there is the research of some devices at field of vibration control, such as magnetic
Control marmem stretches actuator (CN 102359198 A), constructure shakeproof system based on magnetic control shape memory alloy
And induction control method (CN 103382743 A) etc..But, due to current magnetic control shape memory alloy materials processing performance
Restriction with cost, it is adaptable to the large tonnage magnetic control shape memory alloy antivibrator of civil engineering structure almost without.
Therefore, in conjunction with frcition damper and the feature of magnetic shape memory alloy, research one has large deformation Self-resetting
The smart friction damper of ability has certain practical significance.
Utility model content
The problem that the purpose of this utility model is to overcome prior art to exist, it is provided that a kind of magnetic with Self-resetting function
Cause marmem constraint frcition damper, utilize magnetic shape memory alloy dynamically to change friction damper characteristic, and make it
Possesses the smart friction damper of Self-resetting feature, for civil engineering structure passive energy dissipation under dynamic disaster effect.This
Utility model utilizes magnetic shape memory alloy to change antivibrator frictional behavior, utilizes wedge shape sliding surface and mangneto shape memory to close
Gold is implemented in combination with Self-resetting function, compared to general piezoelectric intelligent frcition damper due to magnetic shape memory alloy bigger can
Recover deformation so that antivibrator has bigger frictional damping regulating power and recoverable deformation, meanwhile, at different displacement shapes
Under state, there is again the characteristic of variation rigidity.
For realizing above-mentioned technical purpose, reaching above-mentioned technique effect, this utility model is achieved through the following technical solutions:
There is the magnetic shape memory alloy constraint frcition damper of Self-resetting function, including adpting flange, attaching nut,
Cylinder barrel, middle spigot nut, control unit, outer slide, close spigot nut, core guide rod, described adpting flange is arranged on institute
Stating the two ends of antivibrator, the described adpting flange of one end is connected with described attaching nut, the described adpting flange of the other end and institute
Stating core guide rod to connect, described attaching nut is arranged on described cylinder barrel cavity one side end, and described core guide rod is located at described cylinder
Cylinder is internal, is enclosed with described outer slide outside described core guide rod, and it is single that the outside of described outer slide is provided with several described controls
Unit, described outer slide be respectively arranged at two ends with described middle spigot nut and described closing spigot nut.
Further, described control unit is by spring, magnetic conduction backing plate, coil, permanent magnet and magnetic shape memory alloy block
Composition, described magnetic shape memory alloy block is connected with described spring by described backing plate, described magnetic shape memory alloy block
Outside parcel coil, is described permanent magnet outside described coil.
Preferably, described core guide rod is made up of core bar and core inner slide, described core inner slide and described outer cunning
The contact surface of block is matsurface, and is arranged as required to friction material, utilizes the Friction dissipation vibrational energy between contact surface.
Further, described control unit controls the radial motion of outer slide；Described middle spigot nut and described closing
Spigot nut limits the axially-movable of described outer slide, and ensures the axially-movable of described core guide rod.
Further, described magnetic shape memory alloy block can use Ni2MnGa、Ni2The mangneto shape memories such as FeGa close
Gold or composite.
The beneficial effects of the utility model:
This utility model is as a kind of dissipative damping device, it is possible to effectively control civil engineering structure at dynamic load function
Under response, protect agent structure；This device fully utilizes the friction between core inner slide and outer slide, mangneto shape note
Recall alloy super-elasticity and the produced damping of mangneto shape memory effect carrys out dissipation energy, during no power, show as Self-resetting constraint
Frcition damper, shows as half active friction antivibrator of Self-resetting mutative damp, the most also produces civil engineering structure after energising
Raw certain power output and the effect of offer variation rigidity.This antivibrator taken into full account current magnetic shape memory alloy more crisp,
Processing characteristics is poor, be only capable of the making processing characteristics such as small size component such as small size block and thin film；Have damping capacity strong, can
Recovery deformation is big, performance is relatively stable, have the advantages such as multiple duty.
Accompanying drawing explanation
Fig. 1 is that the outward appearance of the magnetic shape memory alloy constraint frcition damper that this utility model has Self-resetting function is shown
It is intended to；
Fig. 2 (a) is the 1-1 that this utility model has the magnetic shape memory alloy constraint frcition damper of Self-resetting function
Cross-sectional view；
Fig. 2 (b) is the 2-2 that this utility model has the magnetic shape memory alloy constraint frcition damper of Self-resetting function
Cross-sectional view；
Fig. 3 is that the 3-3 of the magnetic shape memory alloy constraint frcition damper that this utility model has Self-resetting function cuts open
Face structural representation；
Fig. 4 is that the 4-4 of the magnetic shape memory alloy constraint frcition damper that this utility model has Self-resetting function cuts open
Face structural representation；
Fig. 5 is the control list that this utility model has the magnetic shape memory alloy constraint frcition damper of Self-resetting function
Meta structure schematic detail view.
Label declaration in figure: 1, adpting flange, 2, attaching nut, 3, cylinder barrel, 4, middle spigot nut, 5, control unit,
51, spring, 52, magnetic conduction backing plate, 53, coil, 54, permanent magnet, 55, magnetic shape memory alloy block, 6, outer slide, 7, confined bed
To nut, 8, core guide rod, 81, core bar, 82, core inner slide.
Detailed description of the invention
Below with reference to the accompanying drawings and in conjunction with the embodiments, this utility model is described in detail.
With reference to shown in Fig. 1-Fig. 5, there is the magnetic shape memory alloy constraint frcition damper of Self-resetting function, including even
Acting flange 1, attaching nut 2, cylinder barrel 3, middle spigot nut 4, control unit 5, and outer slide 6 closes spigot nut 7, and core is led
Bar 8, described adpting flange 1 is arranged on the two ends of described antivibrator, and the described adpting flange 1 of one end is with described attaching nut 2 even
Connecing, the described adpting flange 1 of the other end is connected with described core guide rod 8, and described attaching nut 2 is arranged on described cylinder barrel 3 cavity
One side end, it is internal that described core guide rod 8 is located at described cylinder barrel 3, is enclosed with described outer slide 6, institute outside described core guide rod 8
The outside stating outer slide 6 is provided with several described control units 5, and being respectively arranged at two ends with in the middle of described of described outer slide 6 guides
Nut 4 and described closing spigot nut 7.
Further, described control unit 5 is remembered by spring 51, magnetic conduction backing plate 52, coil 53, permanent magnet 54 and mangneto shape
Recalling alloy block 55 to form, described magnetic shape memory alloy block 55 is connected with described spring 51 by described backing plate 52, described magnetic
Cause to wrap up outside marmem block 55 coil 53, be described permanent magnet 54 outside described coil 53.
Preferably, described core guide rod 8 is made up of core bar 81 and core inner slide 82, described core inner slide 82 and institute
The contact surface stating outer slide 6 is matsurface, and is arranged as required to friction material, utilizes the Friction dissipation between contact surface to vibrate
Energy, the outside of described core inner slide 82 is wavy with the inner side of described outer slide 6 in the axial direction, and described core
Inner slide 82 is engaged each other by wavy contact surface with described outer slide 6, core inner slide 82, outer slide 6 wavy recessed,
Convex contact surface is coarse contact surface, and their concave, convex contact surface can arrange friction material.
Further, described control unit 5 controls the radial motion of outer slide 6；Described middle spigot nut 4 and described envelope
Close spigot nut 7 and limit the axially-movable of described outer slide 6, and ensure the axially-movable of described core guide rod 8.
Further, described magnetic shape memory alloy block 55 can use Ni2MnGa、Ni2The mangneto shape memories such as FeGa
Alloy or composite, superelastic effect and mangneto shape memory effect by described magnetic shape memory alloy block 55 produce
Self-resetting and the function of mutative damp semi-active control.
Principle of the present utility model:
The generation relative motion when the adpting flange 1 at antivibrator two ends is with structure cooperation, thus push-and-pull core guide rod
8, make the axially opposed motion of core inner slide 82, extruding outer slide 6 radially produce relative displacement, but due to control unit pair
There is outer slide 6 to produce radial constraint effect, and make to produce interaction force on core inner slide 82 and the contact surface of outer slide 6,
The power output of antivibrator is made up of frictional force corresponding on the axial thrust load of this active force and contact surface.
During no power, in the case of thin tail sheep, magnetic shape memory alloy 55 does not occur martensite to redirect, damping
Device relies primarily on the friction between slide block to absorb energy；In the case of big displacement, magnetic shape memory alloy 55 there occurs
Martensite redirect and produce in-fighting, be allowed to that there is superelastic hysteretic damping power consumption effect, now antivibrator utilize metal damping and
The friction of contact surface dissipates vibrational energy jointly；After vibration terminates, due to the superelastic effect of magnetic shape memory alloy 55,
Can restPose, so that antivibrator resets.
During energising, under the excitation field of coil 53 generation and the bias magnetic field of permanent magnet generation act on jointly, control magnetic
Cause the deformation of marmem block 55, thus reach to control the purpose of antivibrator frictional behavior so that it is there is semi-active damper
The characteristic of device, simultaneously as mangneto shape memory effect, it is possible to make antivibrator reset after vibration terminates.
Additionally, due to magnetic shape memory alloy 55 different martensitic twins mutually under, its elastic modulus change is relatively big,
Also there is large change in the rigidity making antivibrator, thus, antivibrator is the antivibrator of a kind of variation rigidity.
The step that is embodied as of the present utility model:
(1) structure is analyzed, calculates required damper designs parameter, determine therefrom that antivibrator cross section, control
The design parameters such as unit 5 size processed and number, slide block and core guide rod 8 size.
(2) make magnetic shape memory alloy block 55 according to design parameter, outside it, make skeleton and wrap up coil 53,
Permanent magnet 54 is installed, outside permanent magnet 54 and the parcel non-magnet material shell of bottom, at coil 53 and forever outside coil 53
Magnetic conduction backing plate 52 is installed at magnet 54 top, and then installs pad and spring 51, spring at magnetic shape memory alloy block 55 top
The rigidity of 51 is determined by calculating, completes the making of control unit 5；Can be by the adjustment of spring 51 and permanent magnet 54 be regulated initial
Preloading condition, control the antivibrator mechanical characteristic under non-power status.
(3) according to design parameter processing core bar 81 and core inner slide 82, and both are fixed together；Processing is outer sliding
Block 6, the contact surface of core inner slide 82 and outer slide 6 is mutually twisted, and is configured contact surface at the frictions such as friction material
Reason.
(4) control unit 5 of making is put into the reserved concave block of outer slide 6 by design attitude, by core guide rod 8 with outer
Slide block 6 is bolted together, and puts into cylinder barrel 3 correspondence position；Control unit 5 is affixed with cylinder barrel 3, and the wire of control unit 5 passes through
Cylinder barrel 5 is reserved conduit and is caused outside cylinder barrel 5；Spigot nut 4 and closing spigot nut 7 in the middle of then installing.
(5) last, attaching nut 2 is installed, and adpting flange 1 is installed in both sides, complete the overall package of antivibrator.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for this
For the technical staff in field, this utility model can have various modifications and variations.All in spirit of the present utility model and principle
Within, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (5)
1. there is the magnetic shape memory alloy constraint frcition damper of Self-resetting function, it is characterised in that include adpting flange
(1), attaching nut (2), cylinder barrel (3), middle spigot nut (4), control unit (5), outer slide (6), closing spigot nut
(7), core guide rod (8), described adpting flange (1) is arranged on the two ends of described antivibrator, the described adpting flange (1) of one end with
Described attaching nut (2) connects, and the described adpting flange (1) of the other end is connected with described core guide rod (8), described attaching nut
(2) being arranged on described cylinder barrel (3) cavity one side end, it is internal that described core guide rod (8) is located at described cylinder barrel (3), described core
Guide rod (8) outside is enclosed with described outer slide (6), and the outside of described outer slide (6) is provided with several described control units (5),
Described outer slide (6) be respectively arranged at two ends with described middle spigot nut (4) and described closing spigot nut (7).
The magnetic shape memory alloy constraint frcition damper with Self-resetting function the most according to claim 1, it is special
Levying and be, described control unit (5) is remembered by spring (51), magnetic conduction backing plate (52), coil (53), permanent magnet (54) and mangneto shape
Recalling alloy block (55) composition, described magnetic shape memory alloy block (55) is by described backing plate (52) with described spring (51) even
Connecing, described magnetic shape memory alloy block (55) outside parcel coil (53), described coil (53) outside is described permanent magnet
(54)。
The magnetic shape memory alloy constraint frcition damper with Self-resetting function the most according to claim 1, it is special
Levying and be, described core guide rod (8) is made up of core bar (81) and core inner slide (82), described core inner slide (82) and institute
The contact surface stating outer slide (6) is matsurface, and is arranged as required to friction material, utilizes the Friction dissipation between contact surface to shake
Energy.
The magnetic shape memory alloy constraint frcition damper with Self-resetting function the most according to claim 1, it is special
Levying and be, described control unit (5) controls the radial motion of outer slide (6)；Described middle spigot nut (4) and described confined bed
Limit the axially-movable of described outer slide (6) to nut (7), and ensure the axially-movable of described core guide rod (8).
The magnetic shape memory alloy constraint frcition damper with Self-resetting function the most according to claim 2, it is special
Levying and be, described magnetic shape memory alloy block (55) can use Ni2MnGa、Ni2FeGa magnetic shape memory alloy or compound
Material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620181500.4U CN205502279U (en) | 2016-03-10 | 2016-03-10 | Mangneto shape memory alloy retrains friction damper with from reset function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620181500.4U CN205502279U (en) | 2016-03-10 | 2016-03-10 | Mangneto shape memory alloy retrains friction damper with from reset function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205502279U true CN205502279U (en) | 2016-08-24 |
Family
ID=56731281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620181500.4U Expired - Fee Related CN205502279U (en) | 2016-03-10 | 2016-03-10 | Mangneto shape memory alloy retrains friction damper with from reset function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205502279U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105672515A (en) * | 2016-03-10 | 2016-06-15 | 苏州科技学院 | Magnetic shape memory alloy restraining friction damper with self-reset function |
| CN112144683A (en) * | 2020-09-21 | 2020-12-29 | 重庆大学 | Damper based on variable friction force and multi-stage energy consumption and assembling method thereof |
-
2016
- 2016-03-10 CN CN201620181500.4U patent/CN205502279U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105672515A (en) * | 2016-03-10 | 2016-06-15 | 苏州科技学院 | Magnetic shape memory alloy restraining friction damper with self-reset function |
| CN105672515B (en) * | 2016-03-10 | 2017-11-28 | 苏州科技学院 | Magnetic shape memory alloy constraint frcition damper with runback bit function |
| CN112144683A (en) * | 2020-09-21 | 2020-12-29 | 重庆大学 | Damper based on variable friction force and multi-stage energy consumption and assembling method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105672515B (en) | Magnetic shape memory alloy constraint frcition damper with runback bit function | |
| EP0700490B1 (en) | Motion damper for large structures | |
| CN205502279U (en) | Mangneto shape memory alloy retrains friction damper with from reset function | |
| JP2014052044A (en) | Mr damper | |
| CN104499594B (en) | Displacement rotating scale-up version marmem damper | |
| CN106894534A (en) | Friction energy-dissipating damper | |
| CN204326293U (en) | Displacement rotating scale-up version marmem damper | |
| CN201762839U (en) | Compound shape memory alloy damper | |
| CN107514069A (en) | Low frequency marmem intelligent Nonlinear tuned mass damper and preparation method thereof | |
| CN110056591A (en) | A kind of linear displacement becomes friction and electromagnetism variation rigidity composite damper | |
| Chen et al. | A variable positive-negative stiffness joint with low frequency vibration isolation performance | |
| CN2731175Y (en) | Self-reset magnetic current change damper | |
| US8820492B1 (en) | Soft matrix magnetorheological mounts for shock and vibration isolation | |
| CN105735507A (en) | Tension-compression type magnetic shape memory alloy multi-mode intelligent damper | |
| CN105735506B (en) | Extrusion pressing type Self-resetting magnetic shape memory alloy damper | |
| CN106917839B (en) | Mechanical damper for nuclear power | |
| CN205502280U (en) | Extrusion type is from restoring to throne magnetism shape memory alloy attenuator | |
| CN105202093B (en) | Variable ratio frequency changer vibration isolator based on super-elasticity SMA | |
| CN109972892A (en) | Magnetic shape memory alloy intelligence Self-resetting buckling restrained bracing | |
| CN205712545U (en) | A kind of tension and compression type magnetic shape memory alloy Multimode Intelligent antivibrator | |
| CN108798171A (en) | Big damping buffering formula damper | |
| CN2743614Y (en) | Composite friction damper having variable rigidity characteristics | |
| Khan et al. | A new approach to the design of helical shape memory alloy spring actuators | |
| CN208734177U (en) | Barrel type tension and compression damper | |
| CN205715404U (en) | A kind of by linear magnetic negative stiffness device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20180310 |