CN105805225A - TMD device controlling vibration of time varying structure - Google Patents
TMD device controlling vibration of time varying structure Download PDFInfo
- Publication number
- CN105805225A CN105805225A CN201610339689.XA CN201610339689A CN105805225A CN 105805225 A CN105805225 A CN 105805225A CN 201610339689 A CN201610339689 A CN 201610339689A CN 105805225 A CN105805225 A CN 105805225A
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- conductor plate
- tmd
- plate
- device controlling
- memorial alloy
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
- F16F15/035—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means by use of eddy or induced-current damping
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention provides a TMD device controlling the vibration of a time varying structure. The TMD device comprises a bottom plate, a first conductor plate, a second conductor plate, a third conductor plate and permanent magnets. The first conductor plate, the second conductor plate and the third conductor plate are perpendicular to the bottom plate. One end of the first conductor plate is connected with the second conductor plate, and the other end of the first conductor plate is connected with the third conductor plate. The permanent magnets are fixedly arranged on the bottom plate. The permanent magnets are surrounded by the first conductor plate, the second conductor plate and the third conductor plate. A rigidity adjusting device is arranged between the second conductor plate and the third conductor plate. A mass block and springs are arranged in the rigidity adjusting device. The mass block is connected with the second conductor plate and the third conductor plate through the springs. The rigidity adjusting device can automatically adjust the inherent frequency of a TMD. By means of the TMD device controlling the vibration of the time varying structure, the problem that time varying cannot be achieved on the frequency of an existing TMD can be solved, vibration control over the structure in the perpendicular direction is achieved, and the purpose of real-time control is achieved.
Description
Technical field
The present invention relates to vibration damping and control technical field, be specifically related to a kind of TMD device controlling Time variable structure vibration.
Background technology
Tuned mass damper (TMD) is to control device early in the one of application in Structure uniformity, TMD is mainly made up of with the big assembly of damping element three of dissipative structure vibrational energy mass, the flexible member of tuned frequency, TMD has its irreplaceable control advantage as a kind of passive control device, but, TMD only when its natural frequency is tuned to same or like with controlled natural frequency of structures, just can produce good effectiveness in vibration suppression.Therefore, before design TMD, the natural frequency of vibration holding structure exactly is very necessary.; in Practical Project; impact due to various random factors; the natural frequency of vibration accurately determining structure is very difficult; and controlled structure is after installing TMD device; a degree of drift can be there is in its natural frequency of vibration, this undoubtedly by affect the design of TMD and its build up after control effect to stature dynamic-load response.Simultaneously in TMD long-term work, it is possible to fatigue damage occurs.Its damping element, the damping member of small-sized TMD is generally adopted the high damping materials such as rubber, and large-scale TMD then adopts fluid viscous damper etc..Elastomeric material exists aging, and the shortcoming that rigidity and damping are not readily separated, and viscous damper exists leakage of oil and the not easily problem such as maintenance.
Summary of the invention
Present invention aim to address the problem that existing TMD frequency does not have time-varying, it is achieved the vibration control of structure vertical direction, reach the purpose of control in real time.
Technical scheme is as follows:
A kind of TMD device controlling Time variable structure vibration, including base plate, the first conductor plate, the second conductor plate, the 3rd conductor plate and permanent magnet, first conductor plate, the second conductor plate and the 3rd conductor plate are vertical with base plate, one end of first conductor plate connects the second conductor plate, the other end connects the 3rd conductor plate, permanent magnet is fixing to be located on base plate, and described first conductor plate, the second conductor plate and the 3rd conductor plate surround permanent magnet；It is provided with rigidity adjuster between second conductor plate and the 3rd conductor plate, described rigidity adjuster is provided with mass and spring, mass connects the second conductor plate and the 3rd conductor plate respectively by spring, and described rigidity adjuster can be automatically adjusted the natural frequency of TMD.
In order to better realize the adaptation function of TMD, described rigidity adjuster also includes controller and memorial alloy；Described memorial alloy has a bar shape shaft-like and its two and connects the second conductor plate and the 3rd conductor plate respectively, described controller is located on memorial alloy and is connected with mass, and the junction of described memorial alloy and the second conductor plate, the 3rd conductor plate is provided with loading prestressing apparatus；Loading the vibration of the perceptually relevant structure of prestressing apparatus, simultaneously by conduct vibrations to controller, controller controls the rigidity of memorial alloy by controlling the size of current flowed in memorial alloy, thus regulating the frequency of TMD.
In order to control to make the effect of vibration damping more preferably, controller is located at the middle part of memorial alloy, the junction of described spring and memorial alloy and the second conductor plate, the 3rd conductor plate is respectively equipped with add-in card, described spring is connected by add-in card and the second conductor plate, the 3rd conductor plate, and described memorial alloy is connected through add-in card and fixing with the second conductor plate, the 3rd conductor plate；Described controller is Fructus Rubi group, and described spring is provided with many groups, and described memorial alloy is provided with two.Described permanent magnet is provided with multiple and divides two rows to be vertically fixed on base plate, and the magnetic pole of two often adjacent permanent magnets is reverse to be arranged, and described permanent magnet is bolted on base plate.
The present invention has the advantage that relative to prior art
1, the present invention can solve the problem that the problem that existing TMD frequency does not have time-varying, it is achieved the vibration control of structure vertical direction, reaches the purpose of control in real time.
2, the conductor plate of the present invention and permanent magnet constitute eddy-current damping, the rigidity adjuster of memorial alloy (SMA), spring, induction apparatus and controller composition and mass and other additional mass define mass fraction, the natural frequency of TMD can be regulated in real time, make integrally-built effectiveness in vibration suppression best.
3, the controller of TMD of the present invention, is by having enrolled corresponding program in sending Fructus Rubi, reaches the purpose controlled, and more, structural vibration reduction effect is also more for such control effect.
4, the damping of TMD of the present invention is the eddy-current damping being made up of conductor plate and permanent magnet, it is possible to achieve vertical vibration damping, and eddy-current damping connects simply, component is nearly all metal, and loss is only small, and the later stage is hardly with safeguarding.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the eddy-current damping Guan Bi magnetic induction line schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, a kind of TMD device controlling Time variable structure vibration of the present invention is described in further detail.
As shown in Figure 1, a kind of TMD device controlling Time variable structure vibration of the present invention, including base plate the 9, first conductor plate the 1, second conductor plate the 2, the 3rd conductor plate 3 and multiple permanent magnet 4, first conductor plate the 1, second conductor plate 2 and the 3rd conductor plate 3 are vertical with base plate 9, one end of first conductor plate 1 connects the second conductor plate 2, the other end connects the 3rd conductor plate 3, permanent magnet 4 is fixing to be located on base plate 9, and first conductor plate the 1, second conductor plate 2 and the 3rd conductor plate 3 are arranged around permanent magnet 4；It is provided with rigidity adjuster between second conductor plate 2 and the 3rd conductor plate 3, rigidity adjuster includes 5, two groups of springs 8 of mass, controller 12 and two shaft-like memorial alloys 6 of bar shaped, mass 5 connects the second conductor plate 2 and the 3rd conductor plate 3 respectively by spring 8, memorial alloy 6 two connects the second conductor plate 2 and the 3rd conductor plate 3 respectively, controller 12 is sent for Fructus Rubi, is located at the middle part of memorial alloy 6 and is connected with mass 5, and the junction of memorial alloy 6 and the second conductor plate the 2, the 3rd conductor plate 3 is provided with loading prestressing apparatus 7.
In addition, the junction of spring 8 and memorial alloy 6 and the second conductor plate the 2, the 3rd conductor plate 3 is respectively equipped with add-in card 10, spring 8 is connected with the second conductor plate the 2, the 3rd conductor plate 3 by add-in card 10, and memorial alloy 6 is connected through add-in card 10 is fixing with the second conductor plate the 2, the 3rd conductor plate 3.Permanent magnet 4 point two row is vertically fixed on base plate 9 by bolt 11, and the magnetic pole of two often adjacent permanent magnets 4 is reverse to be arranged.
Rigidity system of the present invention is made up of spring and memory alloy wire, to memory alloy wire Prestressing, and is connected to current device, and size of current is by controller control.The eddy-current damping of conductor plate and permanent magnet composition realizes the purpose of vertical vibration damping, and wherein the connection between plate with plate is for welding.At side conductor plate, being welded with additional plate, carbine is on the hole of add-in card.Permanent magnet and base plate elder generation bolt, then bottom sticks with glue again.
When overall structure generation vertical motion, magnetic induction line cuts three conductor plates and produces current vortex, forms current vortex in conductor plate, and the electric current in conductor then creates magnetic field and produces mutually exclusive power thus forming damping with the magnetic field of permanent magnet.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention.
Claims (8)
1. the TMD device controlling Time variable structure vibration, including base plate (9), it is characterized in that, also include the first conductor plate (1), second conductor plate (2), 3rd conductor plate (3) and permanent magnet (4), described first conductor plate (1), second conductor plate (2) and the 3rd conductor plate (3) are vertical with base plate (9), one end of described first conductor plate (1) connects the second conductor plate (2), the other end connects the 3rd conductor plate (3), described permanent magnet (4) is fixing to be located on base plate (9), described first conductor plate (1), second conductor plate (2) and the 3rd conductor plate (3) are around permanent magnet (4)；
It is provided with rigidity adjuster between described second conductor plate (2) and the 3rd conductor plate (3), described rigidity adjuster is provided with mass (5) and spring (8), described mass (5) connects the second conductor plate (2) and the 3rd conductor plate (3) respectively by spring (8), and described rigidity adjuster can be automatically adjusted the natural frequency of TMD.
2. a kind of TMD device controlling Time variable structure vibration as claimed in claim 1, it is characterised in that described rigidity adjuster also includes controller (12) and memorial alloy (6)；Described memorial alloy (6) has a bar shape shaft-like and its two and connects the second conductor plate (2) and the 3rd conductor plate (3) respectively, described controller (12) is located at memorial alloy (6) and above and is connected with mass (5), and the junction of described memorial alloy (6) and the second conductor plate (2), the 3rd conductor plate (3) is provided with loading prestressing apparatus (7).
3. a kind of TMD device controlling Time variable structure vibration as claimed in claim 2, it is characterised in that described controller (12) is located at the middle part of memorial alloy (6).
4. a kind of TMD device controlling Time variable structure vibration as claimed in claim 3, it is characterized in that, the junction of described spring (8) and memorial alloy (6) and the second conductor plate (2), the 3rd conductor plate (3) is respectively equipped with add-in card (10), described spring (8) is connected with the second conductor plate (2), the 3rd conductor plate (3) by add-in card (10), and described memorial alloy (6) is through add-in card (10) and with the second conductor plate (2), the 3rd conductor plate (3) is fixing is connected.
5. a kind of TMD device controlling Time variable structure vibration as claimed in claim 4, it is characterised in that described controller (12) is sent for Fructus Rubi.
6. a kind of TMD device controlling Time variable structure vibration as claimed in claim 5, it is characterised in that described spring (8) is provided with many groups, and described memorial alloy (6) is provided with two.
7. a kind of TMD device controlling Time variable structure vibration as claimed in claim 6, it is characterised in that described permanent magnet (4) is provided with multiple and divides two rows to be vertically fixed on base plate (9), the magnetic pole of two often adjacent permanent magnets (4) is reverse to be arranged.
8. a kind of TMD device controlling Time variable structure vibration as claimed in claim 7, it is characterised in that described permanent magnet (4) is fixed on base plate (9) by bolt (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610339689.XA CN105805225B (en) | 2016-05-20 | 2016-05-20 | A kind of TMD device of control Time variable structure vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610339689.XA CN105805225B (en) | 2016-05-20 | 2016-05-20 | A kind of TMD device of control Time variable structure vibration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105805225A true CN105805225A (en) | 2016-07-27 |
| CN105805225B CN105805225B (en) | 2019-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610339689.XA Expired - Fee Related CN105805225B (en) | 2016-05-20 | 2016-05-20 | A kind of TMD device of control Time variable structure vibration |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051032A (en) * | 2016-08-17 | 2016-10-26 | 广东工业大学 | Dynamic vibration absorber for hoisting process |
| CN107542628A (en) * | 2017-09-30 | 2018-01-05 | 株洲时代新材料科技股份有限公司 | A kind of dampening apparatus |
| CN109058049A (en) * | 2018-08-20 | 2018-12-21 | 兰州理工大学 | A kind of multidirectional vibration absorber of wind turbine blade prestressed cable and connection method |
| WO2019029198A1 (en) * | 2017-08-10 | 2019-02-14 | 东南大学 | Eddy current vibration damping device utilizing principle of leverage |
| CN115045554A (en) * | 2022-06-16 | 2022-09-13 | 哈尔滨工业大学 | Trigger device for structure passive adaptive control and working method |
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| US20060054432A1 (en) * | 2004-09-16 | 2006-03-16 | Yu-Yen Chiu | Anti-shock system |
| DE102008042478A1 (en) * | 2008-09-30 | 2010-04-08 | Gerb Schwingungsisolierungen Gmbh & Co Kg | Method for damping vibrations acting on object to be protected e.g. building, involves partially absorbing static dead weight of vibrating mass by magnetic forces that act between elements of vibration damper |
| CN101761146A (en) * | 2010-01-04 | 2010-06-30 | 湖南大学 | Permanent-magnet type eddy current tuned mass damper |
| CN104372870A (en) * | 2014-11-13 | 2015-02-25 | 柳州东方工程橡胶制品有限公司 | Pendulous eddy current tuned mass damper vibration reduction control device |
| CN205639453U (en) * | 2016-05-20 | 2016-10-12 | 兰州理工大学 | Self -adaptation TMD controlling means |
-
2016
- 2016-05-20 CN CN201610339689.XA patent/CN105805225B/en not_active Expired - Fee Related
Patent Citations (5)
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| US20060054432A1 (en) * | 2004-09-16 | 2006-03-16 | Yu-Yen Chiu | Anti-shock system |
| DE102008042478A1 (en) * | 2008-09-30 | 2010-04-08 | Gerb Schwingungsisolierungen Gmbh & Co Kg | Method for damping vibrations acting on object to be protected e.g. building, involves partially absorbing static dead weight of vibrating mass by magnetic forces that act between elements of vibration damper |
| CN101761146A (en) * | 2010-01-04 | 2010-06-30 | 湖南大学 | Permanent-magnet type eddy current tuned mass damper |
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Non-Patent Citations (1)
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| 孙万泉;李庆斌: "基于形状记忆合金的TMD半主动控制", 《哈尔滨工业大学学报》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051032A (en) * | 2016-08-17 | 2016-10-26 | 广东工业大学 | Dynamic vibration absorber for hoisting process |
| CN106051032B (en) * | 2016-08-17 | 2018-05-18 | 广东工业大学 | A kind of powered shock absorption device for hoisting process |
| WO2019029198A1 (en) * | 2017-08-10 | 2019-02-14 | 东南大学 | Eddy current vibration damping device utilizing principle of leverage |
| CN107542628A (en) * | 2017-09-30 | 2018-01-05 | 株洲时代新材料科技股份有限公司 | A kind of dampening apparatus |
| CN109058049A (en) * | 2018-08-20 | 2018-12-21 | 兰州理工大学 | A kind of multidirectional vibration absorber of wind turbine blade prestressed cable and connection method |
| CN115045554A (en) * | 2022-06-16 | 2022-09-13 | 哈尔滨工业大学 | Trigger device for structure passive adaptive control and working method |
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| CN105805225B (en) | 2019-03-22 |
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