CN202248358U - Variable rigidity and variable damping tuned mass damper - Google Patents
Variable rigidity and variable damping tuned mass damper Download PDFInfo
- Publication number
- CN202248358U CN202248358U CN2011204060535U CN201120406053U CN202248358U CN 202248358 U CN202248358 U CN 202248358U CN 2011204060535 U CN2011204060535 U CN 2011204060535U CN 201120406053 U CN201120406053 U CN 201120406053U CN 202248358 U CN202248358 U CN 202248358U
- Authority
- CN
- China
- Prior art keywords
- mass
- damper
- cantilever spring
- damping
- tuned mass
- 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.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The utility model discloses a variable rigidity and variable damping tuned mass damper, which is mainly used for vibration control of multi-frequency structures, such as high-rise buildings or large-span bridges, ocean platforms and the like. The damper comprises a mass block, wherein a vertical spring is connected in the vertical direction above the mass block; magneto-rheological dampers are respectively arranged in the horizontal direction and the vertical direction of the mass block; a cantilever spring is horizontally placed in the longitudinal direction; one end of the cantilever spring is connected with the mass block; and the other end of the cantilever spring is connected with a travelling mechanism. The two ends of the travelling mechanism are placed on a rigid guide rail; and the travelling mechanism is driven to longitudinally move through a stepping motor. The adjustment of the length of the cantilever spring is realized through the stepping motor, and then the tuning frequency of the tuned mass damper is adjusted. The damping ratio of the tuned mass damper is changed by adjusting the current of the magneto-rheological dampers, the rigidity and the damper can be continuously adjusted, and vertical and transverse vibration control is realized. The working principle of the tuned mass damper is clear, half active control characteristic can be easily realized in project application, the damping effect is good, and the tuned mass damper has the advantages of quick response, high precision and the like.
Description
Technical field
The utility model belongs to the vibration control technology field, is specifically related to a kind of change stiffness and damping changing tuned mass damper that is mainly used in highrise building or multifrequency structural vibration control such as long span bridge beam, ocean platform.
Background technology
Tuned mass damper is the most frequently used control device, and its mechanism is the applied environment load to works and the double tunning principle that is placed on vibration absorber on the works, and the absorption portion vibrational energy reaches the effect of vibration damping.The key that improves tuning quality damper vibration damping effect and damping efficiency is to confirm best tuned frequency and damping ratio.During the vibration isolation of routine tuned mass damper; Because its tuned frequency, damping ratio immobilize; Lack of proper care easily when then externally excitation, structure master shake mode and the variation of intrinsic dynamic characteristics; Even employing multiple tuned mass dampers, most of tuned mass dampers do not reach best vibration damping condition equally, can not give full play to the damping efficiency of tuned mass damper.
Summary of the invention
The purpose of the utility model is to the above-mentioned defective that exists in the prior art, and a kind of good damping result, change stiffness and damping changing tuned mass damper that damping efficiency is high are provided.
The utility model is to realize above-mentioned purpose through following technical scheme: this change stiffness and damping changing tuned mass damper; Be mainly used in the vibration isolation of highrise building or multifrequency works such as long span bridge beam, ocean platform; It comprises a mass; The top vertical direction of mass is provided with the vertical spring that is used for balance mass piece gravity, and vertical spring upper end is fixing, and the lower end is connected with mass; The below vertical direction of mass and horizontal cross are respectively equipped with a MR damper, and an end of MR damper is fixed, and the other end is connected with mass; The level of mass vertically is provided with a cantilever spring, and an end of cantilever spring is connected with mass, and the other end is connected with a walking mechanism; Said walking mechanism and cantilever spring keep quadrature; Its two ends are installed on the both sides rigid guideway parallel with cantilever spring longitudinal extension direction; One side end of walking mechanism is connected with a stepper motor, and is along the longitudinal movement the length of real-time regulated cantilever spring by its driving walking mechanism; Said MR damper links to each other with the real-time monitor control system of controlled works with stepper motor, and the length through control step motor real time altering cantilever spring changes tuned frequency, changes damping ratio through the real-time current of regulating MR damper.
More particularly, during actual coming into operation, can select the material of mass for use,, and select for use suitable mass value to regulate the intrinsic frequency of damper according to the vibration-proof structure difference like water tank according to concrete needs.
The utility model utilizes the length of stepper motor change cantilever spring, changes the tuned frequency of tuned mass damper; Change the damping ratio of tuned mass damper through the electric current of regulating MR damper, realize that rigidity and damping continuous variable are applicable to that also vertical and oscillation crosswise controls, have the vibration damping bandwidth, the easy to adjust and characteristics fast of self adaptation.
In sum, the change stiffness and damping changing tuned mass damper of the utility model is compared with existing tuned mass damper, because of having added magnetic rheological liquid damper device and stepper motor, has following advantage:
(1) the change stiffness and damping changing tuned mass damper operating principle of the utility model is clear, good damping result, and damping efficiency is high.
(2) the adjustable characteristics of MR damper damping size intelligence have been utilized; Through regulating size of current, the size of damping force is provided, replaced traditional viscous damper easily; On practical applications, be easy to realize its characteristic of half ACTIVE CONTROL, finally make structural vibration reduction reach optimal effectiveness.
(3) variable stiffness apparatus adopts step motor drive walking structure change cantilever spring length to change tuned frequency, has the advantages that response is fast, precision is high.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is half an ACTIVE CONTROL FB(flow block) of the real-time monitor control system of the utility model embodiment.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.
Referring to Fig. 1, present embodiment comprises mass 6, and the material of mass 6 adopts water tank, and the top vertical direction of mass 6 is provided with the vertical spring 5 that is used for balance mass piece gravity, and vertical spring 5 upper ends are fixed, and the lower end is connected with mass 6.If the tuned mass damper of the utility model is installed in the box girder of long span bridge beam, the vertical spring 5 of mass 6 overhung directly anchor in case beam upper plate bottom surface.Visible by figure, the below vertical direction of mass 6 and horizontal cross are respectively equipped with a MR damper 7, and an end of MR damper 7 is fixed, and the other end is connected with mass 6.Level at mass 6 vertically is provided with a cantilever spring 4, and an end of cantilever spring 4 is connected with mass 6, and the other end is connected with walking mechanism 2.Walking mechanism 2 keeps quadrature with cantilever spring 4; Its two ends are installed on the both sides rigid guideway 1 parallel with cantilever spring 4 longitudinal extension directions; One side end of walking mechanism 2 is connected with stepper motor 3; And drive walking mechanisms 2 by stepper motor 3 and be along the longitudinal movement the length of real-time regulated cantilever spring 4.The vibration of mass 6 will cause MR damper 7 relative motions, reach the purpose of passive energy dissipation, effectively suppress vertically to reach oscillation crosswise.Through the length of stepper motor 3 motion real-time regulated cantilever springs 4, and the electric current that changes said MR damper 7, realize rigidity and damping continuous variable, convenient and swift.
Above-mentioned MR damper 7 links to each other with the real-time monitor control system of controlled works with stepper motor 3; Length through control step motor 3 real time altering cantilever springs 4 changes tuned frequency, changes damping ratio through the real-time current of regulating MR damper 7.
Referring to Fig. 2, be half ACTIVE CONTROL FB(flow block) of the real-time monitor control system of present embodiment.Its operating principle is: when works was interfered motion, the tuned mass damper that drives the utility model vibrated together, and the inertia force that the tuned mass damper relative motion produces reacts on the works.The vibrational energy of works is transferred on the tuned mass damper to greatest extent, and dissipated, thereby the vibration that reduces works is reacted by the damping action of MR damper.When the intrinsic dynamic characteristics of external drive, works changes; The main structure vibration and the tuned mass damper response characteristic of sensor in real time monitoring are carried out spectrum analysis, then according to half ACTIVE CONTROL algorithm; Calculate Optimal Stiffness parameter and damping parameter; According to controlled encoder, through the length of stepper motor real time altering cantilever spring, thus the tuned frequency of change tuned mass damper; Change the damping ratio of tuned mass damper through the real-time current of regulating MR damper, improved damping efficiency, kept best effectiveness in vibration suppression.
Claims (2)
1. one kind becomes the stiffness and damping changing tuned mass damper; Be mainly used in the vibration isolation of highrise building or multifrequency works such as long span bridge beam, ocean platform; It is characterized in that: it comprises a mass; The top vertical direction of mass is provided with the vertical spring that is used for balance mass piece gravity, and vertical spring upper end is fixing, and the lower end is connected with mass; The below vertical direction of mass and horizontal cross are respectively equipped with a MR damper, and an end of MR damper is fixed, and the other end is connected with mass; The level of mass vertically is provided with a cantilever spring, and an end of cantilever spring is connected with mass, and the other end is connected with a walking mechanism; Said walking mechanism and cantilever spring keep quadrature; Its two ends are installed on the both sides rigid guideway parallel with cantilever spring longitudinal extension direction; One side end of walking mechanism is connected with a stepper motor, and is along the longitudinal movement the length of real-time regulated cantilever spring by its driving walking mechanism; Said MR damper links to each other with the real-time monitor control system of controlled works with stepper motor, and the length through control step motor real time altering cantilever spring changes tuned frequency, changes damping ratio through the real-time current of regulating MR damper.
2. change stiffness and damping changing tuned mass damper according to claim 1 is characterized in that: said mass adopts water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204060535U CN202248358U (en) | 2011-10-23 | 2011-10-23 | Variable rigidity and variable damping tuned mass damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204060535U CN202248358U (en) | 2011-10-23 | 2011-10-23 | Variable rigidity and variable damping tuned mass damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202248358U true CN202248358U (en) | 2012-05-30 |
Family
ID=46109620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204060535U Withdrawn - After Issue CN202248358U (en) | 2011-10-23 | 2011-10-23 | Variable rigidity and variable damping tuned mass damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202248358U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345333A (en) * | 2011-10-23 | 2012-02-08 | 湖南科技大学 | Variable-rigidity and variable-damping tuned mass damper |
| CN103938751A (en) * | 2014-04-11 | 2014-07-23 | 湖南科技大学 | Self-powered semi-active tuned mass damper |
| CN110259241A (en) * | 2019-06-19 | 2019-09-20 | 同济大学 | The intelligent tuning mass damper of half active variable damping of adaptive variation rigidity |
| CN113464603A (en) * | 2021-06-15 | 2021-10-01 | 上海工程技术大学 | Tuning dynamic damper with adjustable it is multidirectional |
-
2011
- 2011-10-23 CN CN2011204060535U patent/CN202248358U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345333A (en) * | 2011-10-23 | 2012-02-08 | 湖南科技大学 | Variable-rigidity and variable-damping tuned mass damper |
| CN103938751A (en) * | 2014-04-11 | 2014-07-23 | 湖南科技大学 | Self-powered semi-active tuned mass damper |
| CN110259241A (en) * | 2019-06-19 | 2019-09-20 | 同济大学 | The intelligent tuning mass damper of half active variable damping of adaptive variation rigidity |
| CN113464603A (en) * | 2021-06-15 | 2021-10-01 | 上海工程技术大学 | Tuning dynamic damper with adjustable it is multidirectional |
| CN113464603B (en) * | 2021-06-15 | 2023-02-10 | 上海工程技术大学 | Tuning dynamic damper with adjustable it is multidirectional |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102345333B (en) | Variable-rigidity and variable-damping tuned mass damper | |
| CN103938751B (en) | Self-powered semi-active tuned mass damper | |
| CN106948256B (en) | A kind of ultralow frequency liquid quality tuned damper and design method | |
| CN103074947B (en) | Tuned mass damper adjustable in three directions | |
| CN107060125B (en) | A kind of tuned mass damper device | |
| CN203834722U (en) | Self-powered type semi-active tuned mass damper | |
| CA1314570C (en) | Damping device for tower-like structure | |
| CN202248358U (en) | Variable rigidity and variable damping tuned mass damper | |
| CN110296182A (en) | A kind of tuning quality damper vibration damping system being incorporated to nonlinear energy trap | |
| CN100507305C (en) | Magnetic flowing deformation elastomer frequency shift type attenuator and control method | |
| CN101806104B (en) | Suspended frequency modulation mass damper | |
| CN103758028B (en) | A kind of tuning vibration absorber of low frequency mass and control method thereof | |
| CN106988592B (en) | A kind of swing-type tuned mass damper device | |
| CN103925331A (en) | Rigidity adjusting device for spiral springs and tuned mass damping device | |
| CN209509211U (en) | A kind of difunctional tuned mass damper of vertical levels | |
| CN108797311A (en) | A kind of eddy current tuned mass damper and design method for cable way bridge | |
| CN108708928A (en) | A kind of magnetorheological tuned mass damper of half active | |
| KR101166258B1 (en) | Vibration control device of construction structure | |
| CN206376390U (en) | A kind of three-dimensional multiple tuned mass dampers damping control device | |
| EP1479938A1 (en) | Damping device and method for setting natural frequency of damping body in the damping device | |
| CN106368343B (en) | A kind of sag damping rope | |
| CN201660980U (en) | Suspended frequency modulation mass damper | |
| CN208055825U (en) | A kind of Traffic Engineering Construction plate device | |
| CN204185957U (en) | The vertical tuned mass damper of a kind of beam with both ends built-in formula | |
| CN100346088C (en) | Magnetorheological liquid damping type dynamic vibration absorber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120530 Effective date of abandoning: 20130828 |
|
| RGAV | Abandon patent right to avoid regrant |