CN109322418B - A multi-dimensional nonlinear energy trap vibration damping device - Google Patents
A multi-dimensional nonlinear energy trap vibration damping device Download PDFInfo
- Publication number
- CN109322418B CN109322418B CN201811386550.6A CN201811386550A CN109322418B CN 109322418 B CN109322418 B CN 109322418B CN 201811386550 A CN201811386550 A CN 201811386550A CN 109322418 B CN109322418 B CN 109322418B
- Authority
- CN
- China
- Prior art keywords
- box body
- ball screw
- cabinet
- spring
- sides
- 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.)
- Active
Links
- 238000013016 damping Methods 0.000 title claims description 18
- 238000009434 installation Methods 0.000 claims abstract description 6
- 239000004020 conductor Substances 0.000 claims description 12
- 238000005265 energy consumption Methods 0.000 claims description 7
- 239000006096 absorbing agent Substances 0.000 abstract description 11
- 239000000463 material Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 13
- 230000003321 amplification Effects 0.000 description 5
- 239000011324 bead Substances 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 229940088594 vitamin Drugs 0.000 description 4
- 239000011782 vitamin Substances 0.000 description 4
- 230000006698 induction Effects 0.000 description 3
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a kind of multidimensional nonlinear energy wells vibration absorbers, including a cabinet, used matter unit is equipped in the cabinet, one end of the used matter unit is connected with damped part is located in the box body, and the other end of used matter unit is connected with installation connection unit；The cabinet is placed on a bottom cushion cap, is contacted between tank floor and bottom cushion cap by ball, and cabinet can slide；On the direction perpendicular to box body-sliding, cabinet two sides are connected on the baffle of bottom cushion cap two sides by the first spring, form non-linear rigidity, this is the first freedom degree；On being parallel to box body-sliding direction, it is connected between the used matter unit and cabinet by second spring, this is the second freedom degree.
Description
Technical field
The invention belongs to the Structural Energy Dissipation vibration damping fields of civil engineering, and in particular to a kind of multidimensional nonlinear energy wells vibration damping
Device.
Background technique
Along with the frequent generation of the natural calamities such as disaster caused by a windstorm, earthquake, people grind the wind resistance of structure, antidetonation, mitigation
Study carefully and deepens continuously.Energy-eliminating shock-absorbing technology is reduced by adding additional energy-eliminating shock-absorbing device at the position that structure generates relative motion
The dynamic response of structure itself ensure that the functional requirements such as safety, comfort and the normal usage of structure and be transported extensively
With.
Traditional vibration absorber such as tuned mass damper etc., belongs to linear power damper, principle are as follows: is subtracted by adjusting
The frequency of vibrating device is close with main structure, changes the resonance characteristics of structure, original structure bear power effect and when high vibration, by
In tuned mass damper mass block inertia and to original structure apply opposite direction active force, damping also play energy consumption effect,
To achieve the purpose that make the dynamic respons of original structure obviously to decay.But it there is vibration damping frequency band is narrow, quality is excessive to be will cause
The defects of structure initial deformation.
Nonlinear energy trap (Nonlinear Energy Sink, NES) is people by introducing in traditional dynamic vibration absorber
Novel damping device obtained from nonlinear characteristic.In vibration processes, the targeted energy that NES occurs is transmitted so that vibrational energy
It is irreversibly transferred to oscillator with one kind, does not return to original system, and energy is promoted by the damping action of itself oscillator
Amount dissipates.Due to its non-linear rigidity, NES can resonate in wider frequency domain, not to main structure frequency
Certainty robustness with higher.But meanwhile the non-linear of NES causes its damping property more sensitive to input energy size,
Effectiveness in vibration suppression will be affected.
Summary of the invention
It is an object of the present invention to provide a kind of multidimensional nonlinear energy wells vibration absorbers, it is intended to overcome the shortage of prior art, benefit
Solve the problems, such as that tuned mass damper control frequency domain bandwidth is relatively narrow with nonlinear energy trap, using the damper of negative poisson's ratio material
And the used matter system of quality amplification effect improves the absorbing energy consumption effect of bump leveller.
To achieve the above object, the present invention adopts the following technical solutions:
A kind of multidimensional nonlinear energy wells vibration absorber, including a cabinet are equipped with used matter unit in the cabinet,
One end of the used matter unit is connected with damped part is located in the box body, and is used to the other end and installation connection unit of matter unit
It is connected；The cabinet is placed on a bottom cushion cap, is contacted between tank floor and bottom cushion cap by ball, and cabinet can be slided
It is dynamic；
On the direction perpendicular to box body-sliding, cabinet two sides are connected to the baffle of bottom cushion cap two sides by the first spring
On, non-linear rigidity is formed, this is the first freedom degree；On being parallel to box body-sliding direction, the used matter unit and cabinet
Between by second spring be connected, this be the second freedom degree.
Further, there is a groove in the cabinet bottom end, is mounted with magnetic pole on the groove face of groove two sides；The bottom cushion cap
Middle, is equipped with a conductor, and the conductor is stuck in the groove of square box；The two sides magnetic pole can generate magnetic strength
Line, when cabinet slides on the cushion cap of bottom, conductor cutting magnetic induction line consumes energy.
Further, the used matter damper includes ball screw, nut and rotary flyweights；The ball screw
Axis direction is vertical with box body-sliding direction, and one end of ball screw extends to outside cabinet to be connected with a spring, and the other end is logical
It crosses connecting rod to be connected with damped part, the nut is mounted on ball screw, and the nut is fixed with rotary flyweights
It is connected.
Further, the installation connection unit is a link, and the link is connect with third spring, described
Link is for connecting structure to be damped.
Further, the position that the ball screw is contacted with cabinet is equipped with bead, due to the presence of bead, wait subtract
Vibration structure deforms, and can only drive ball screw that horizontal movement occurs, and the used matter damper can turn horizontal movement
Rotary motion is turned to, to make flywheel rotary motion.Further, the damped part is negative poisson's ratio damper.
Further, the two sides of the ball screw pass through the second spring and are connected with cabinet wall.
Working principle of the present invention is as follows:
Under earthquake or wind action, the cabinet of the bump leveller can slide on the cushion cap of bottom, due on the cushion cap of bottom
Conductor cutting magnetic induction line can achieve the effect that energy consumption, simultaneously as the movement of cabinet can stretch the first spring, and make the first bullet
Spring provides one non-linear pair of restoring force, cube directly proportional, the i.e. F=ku of restoring force F and the displacement components u of cabinet3, wherein k
For the global stiffness of Hookean spring, therefore the restoring force is nonlinear restoring force.
While bin movement, the horizontal movement of ball screw can be changed into the rotation of flywheel by the used matter unit of box house
Transhipment is dynamic.The relationship that flying disc angle of rotation and screw rod are axially moved:
In formula, x is the axial movement of screw rod, and L is one week screw rod institute moving distance of flywheel turns.The moment of inertia of flywheel indicates
Are as follows:
In formula, I is the rotary inertia of flywheel.m0For flywheel mass, r0、riRespectively flywheel
Internal diameter and outer diameter.The inertia force then generated by flywheel turns are as follows:
M in formularFor equivalent mass.It can be seen that mrOpposite flywheel actual mass m0It is exaggeratedTimes,
Adjusting flywheel dimension can make amplification coefficient reach several hundred or even thousands of times.Because the reason of rotation, inertia force is exaggerated perhaps
More times, so that meeting lesser mass block realizes preferably effectiveness in vibration suppression.
At the same time, negative poisson's ratio material is as a kind of novel auxetic materials, outstanding shock attenuation result and significant energy
Amount assimilation effect becomes new lover's material.The damper of the material is connected by connecting rod with used matter unit, can be played
Good passive energy dissipation effect.
The beneficial effects of the present invention are:
(1) targeted energy transmitting (the i.e. ball screw piston that will drive damping energy dissipation component can occur for NES in the present invention
Horizontal movement occurs, horizontal damping force is provided, to realize that targeted energy transmits) so that vibrational energy is with a kind of irreversible
Mode be transferred to oscillator, energy absorbing frequency domain locks field width and traditional bump leveller, is realized using non-linear rigidity multiple
The locking of resonant frequency substantially increases the energy absorbing efficiency of vibration absorber.
(2) present invention realizes efficient consumption using the damper of negative poisson's ratio material and the used matter system of quality amplification effect
The effect of energy.
(3) simple structure of the present invention, flexibility is high and easy to maintain, effectively improves the seismic wind resistance of structure, can
Generate preferable Social benefit and economic benefit.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described.
Fig. 1 is a kind of novel multi-vitamin nonlinear energy trap vibration absorber front view；
Fig. 2 is a kind of novel multi-vitamin nonlinear energy trap vibration absorber top view；
Fig. 3 is the detail of construction of used matter unit；
In figure: 1 link, 2 springs, 3 beads, 4 springs, 5 ball screws, 6 rotary flyweights, 7 nuts, 8 connecting rods, 9 negative pools
Pine is than damper, 10 cabinets, 11 baffles, 12 springs, 13 balls, 14 magnetic poles, 15 conductors, 16 bottom cushion caps, 17 balls.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination；
In order to facilitate narration, if there is "upper", "lower", " left side " " right side " printed words in the present invention, only expression and attached drawing itself
Upper and lower, left and right direction it is consistent, not to structure rise restriction effect, it is only for convenient for description the present invention and simplification retouch
It states, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, and be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.
As technical background is introduced, it is an object of the present invention to provide a kind of novel multi-vitamin nonlinear energy trap vibration damping dresses
It sets, it is intended to overcome the shortage of prior art, solving tuned mass damper control using nonlinear energy trap, frequency domain bandwidth is relatively narrow asks
Topic is imitated using the damper of negative poisson's ratio material and the used matter system of quality amplification effect to improve the absorbing energy consumption of bump leveller
Fruit.
In a kind of typical embodiment of the application, as shown in Figure 1, a kind of novel multi-vitamin proposed by the present invention is non-linear
Energy wells vibration absorber is as shown in the figure；Including installation connection unit, non-linear rigidity component, damped part and used matter unit.
The non-linear rigidity component and damped part, composition nonlinear energy trap energy consumption unit.
The non-linear rigidity component includes cabinet 10, bottom cushion cap 16 and spring 12；Cabinet 10 is placed on bottom cushion cap 16,
10 underrun ball 13 of cabinet is contacted with bottom cushion cap 16, and cabinet 10 can slide；In vertical 10 glide direction of cabinet, case
The two sides of body 10 are connected on the baffle 11 of bottom cushion cap two sides by spring 12, form non-linear rigidity, this is the first freedom degree
In this embodiment, spring 12 includes four, is respectively arranged two in the two sides of cabinet 10, it is preferred that is located at the spring of two sides two
12 is symmetrical in the left and right sides of cabinet 10.
Further, described to have a groove in 10 bottom of cabinet, magnetic pole 14 is mounted on the left and right sides groove face of groove.
16 middle of the cushion cap bottom of at is equipped with a conductor 15, and conductor 15 is stuck in the groove of square box, allow cabinet along
Conductor 15 slidably reciprocates.Two sides magnetic pole 14 can generate magnetic induction line, and when cabinet 10 slides on bottom cushion cap 16, conductor 15 cuts magnetic
Feel line, consumes energy.
Further, the box house is damped by the used matter being made of ball screw 5, nut 7 and rotary flyweights 6
Device.
Further, the setting direction of the ball screw 5 is vertical with bin movement direction, and 5 one end of ball screw is prolonged
The outer connecting spring 2 of cabinet is reached, the other end passes through connecting rod 8 and the negative poisson's ratio material damper 9 being fixed on cabinet wall
It is connected；The position that ball screw 5 is contacted with cabinet is provided with bead 3；Nut 7 is mounted on ball screw 5, and nut 7 with
Rotary flyweights 6 are fixedly connected.
Negative poisson's ratio material is as a kind of novel auxetic materials, outstanding shock attenuation result and significant energy absorbing efficiency
Become new lover's material.The damper of the material is connected by connecting rod with used matter unit, good energy consumption can be played
Effectiveness in vibration suppression.
Further, described 2 one end of spring is hung on link 1, and link is fixed in structure, due to the presence of bead 3,
Structure deforms, and can only drive ball screw 5 that horizontal movement occurs, and 5 horizontal movement of ball screw drives nut 7 to rotate, spiral shell
7 rotation of mother drives rotary flyweights 6 to rotate, and the final used matter damper can convert rotary motion for horizontal movement, from
And make 6 rotary motion of flywheel.
Further, multiple springs 4 are provided with perpendicular to the direction of motion of ball screw, in the embodiment provided in figure,
Including 4 springs 4, respectively it is arranged two in the two sides of ball screw, 4 one end of spring is connected on ball screw 5, other end connection
On cabinet wall, this is the second freedom degree；Multiple springs 4 are located at the right side of rotary flyweights 6 in the present embodiment；7, nut
In the left side of rotary flyweights 6；In other embodiments, rotation can also be located at the left side of multiple springs 4 and rotary flyweights 6, nut 7
Turn the right side etc. of flywheel 6.Further, described used matter damper one end is damped by connecting rod 8 and negative poisson's ratio material
Device 9 is connected.
Targeted energy transmitting can occur for NES in the present invention, so that vibrational energy is irreversibly transferred to one kind
Oscillator, energy absorbing frequency domain are locked field width and traditional bump leveller, the lock of multiple resonant frequencies are realized using non-linear rigidity
It is fixed, substantially increase the energy absorbing efficiency of vibration absorber.Except this, using the damper and quality amplification effect of negative poisson's ratio material
It is used to matter system to realize the effect efficiently to consume energy.Meanwhile simple structure of the present invention, flexibility is high and easy to maintain, effectively improves
The seismic wind resistance of structure, can produce better social and economic benefits.
The embodiment above of the invention is not limiting the scope of the present invention, and embodiments of the present invention are unlimited
In this, all such above contents according to the present invention are not departing from this according to the ordinary technical knowledge and customary means of this field
Modification, replacement or change under the premise of inventing above-mentioned basic fundamental thought, to other diversified forms that above structure of the present invention is made
More, it should all fall within the scope and spirit of the invention.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811386550.6A CN109322418B (en) | 2018-11-20 | 2018-11-20 | A multi-dimensional nonlinear energy trap vibration damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811386550.6A CN109322418B (en) | 2018-11-20 | 2018-11-20 | A multi-dimensional nonlinear energy trap vibration damping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109322418A CN109322418A (en) | 2019-02-12 |
| CN109322418B true CN109322418B (en) | 2019-06-11 |
Family
ID=65257452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811386550.6A Active CN109322418B (en) | 2018-11-20 | 2018-11-20 | A multi-dimensional nonlinear energy trap vibration damping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109322418B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886808B (en) * | 2019-12-04 | 2021-08-06 | 上海大学 | An amplitude limiting nonlinear energy trap vibration damping device |
| CN111396498B (en) * | 2019-12-06 | 2021-08-17 | 浙江运达风电股份有限公司 | Nonlinear vibration damper for wind turbine tower |
| CN111335496B (en) * | 2020-03-17 | 2021-02-19 | 东北大学秦皇岛分校 | Nonlinear negative stiffness multidimensional vibration damper |
| CN112342903B (en) * | 2020-11-11 | 2022-07-22 | 长沙理工大学 | Energy-consuming variable-rigidity anti-seismic bridge stop block based on magnetorheological body |
| CN113914699A (en) * | 2021-09-30 | 2022-01-11 | 兰州理工大学 | A Wind-resistant Damping Structure of Transmission Tower Based on Negative Poisson Effect |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205134603U (en) * | 2015-11-12 | 2016-04-06 | 同济大学 | Two degree of freedom bump levellers based on nonlinearity energy trap |
| CN206449146U (en) * | 2017-04-25 | 2017-08-29 | 江苏路博减振技术有限公司 | A kind of brace type eddy current tuned mass damper |
| CN206529922U (en) * | 2016-12-16 | 2017-09-29 | 同济大学 | A kind of parallel connection type acceleration inertia sinker |
| CN108086771A (en) * | 2018-01-22 | 2018-05-29 | 同济大学 | Used appearance shock mitigation system with nonlinear energy trap |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327038A (en) * | 2017-06-19 | 2017-11-07 | 同济大学 | A kind of eddy current tuned mass damper based on vibration energy regeneration |
| CN207079749U (en) * | 2017-07-26 | 2018-03-09 | 哈尔滨工业大学 | A kind of tuned mass damper and damping device |
-
2018
- 2018-11-20 CN CN201811386550.6A patent/CN109322418B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205134603U (en) * | 2015-11-12 | 2016-04-06 | 同济大学 | Two degree of freedom bump levellers based on nonlinearity energy trap |
| CN206529922U (en) * | 2016-12-16 | 2017-09-29 | 同济大学 | A kind of parallel connection type acceleration inertia sinker |
| CN206449146U (en) * | 2017-04-25 | 2017-08-29 | 江苏路博减振技术有限公司 | A kind of brace type eddy current tuned mass damper |
| CN108086771A (en) * | 2018-01-22 | 2018-05-29 | 同济大学 | Used appearance shock mitigation system with nonlinear energy trap |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109322418A (en) | 2019-02-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109322418B (en) | A multi-dimensional nonlinear energy trap vibration damping device | |
| CN106381941B (en) | A kind of shape memory alloy spring bump leveller containing collisional damping energy-consuming device | |
| CN106401004B (en) | A kind of rolling in multiple directions formula damper | |
| CN103541460B (en) | Novel tuning granular mass damper | |
| CN103243831B (en) | The omni-directional turned damping damped pendulum of combined type | |
| CN104763070A (en) | Suspension type multidimensional impact vibration reduction damper | |
| CN107606027B (en) | A two-degree-of-freedom collision nonlinear vibration damping device | |
| CN109138566A (en) | It is used to appearance system using the tuning of collision friction damping energy dissipation | |
| CN103821248B (en) | Spacing link type low frequency shock insulation energy dissipation brace | |
| CN108086771A (en) | Used appearance shock mitigation system with nonlinear energy trap | |
| CN110805348A (en) | Self-resetting rotational inertia damper | |
| CN109610302A (en) | Composite bridge torsional vibration control system | |
| CN104612280B (en) | Compound energy-consumption damping control device | |
| CN106758772A (en) | A kind of acceleration type current vortex inertia sinker | |
| CN206189639U (en) | Shape memory alloy spring bump leveller that contains collision damping energy dissipation device | |
| CN105937573A (en) | Particle damping vibration absorption device under weightless environment | |
| CN102995787A (en) | Rolling mass tuning damper | |
| CN105332442A (en) | Particle damper with nonlinear rigidity | |
| CN206368933U (en) | A kind of tandem type acceleration inertia sinker | |
| CN107419816A (en) | Control the vibration absorber of three-dimensional translating and its torsional direction | |
| CN106760845A (en) | A kind of parallel connection type acceleration inertia sinker | |
| CN204570985U (en) | Suspension multidimensional collisional quenching damper | |
| CN205475804U (en) | Whirlpool power consumption formula tuned liquid damper that shakes | |
| CN108799394B (en) | Dynamic Vibration Absorber and Vibration Absorber Group System | |
| CN203974458U (en) | A kind of passive suspension frame structure of vehicle of being used to container that contains |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |