CN104652643B - Self-reset high-energy-consumption shape-memory-alloy friction damper - Google Patents
Self-reset high-energy-consumption shape-memory-alloy friction damper Download PDFInfo
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- CN104652643B CN104652643B CN201510048885.7A CN201510048885A CN104652643B CN 104652643 B CN104652643 B CN 104652643B CN 201510048885 A CN201510048885 A CN 201510048885A CN 104652643 B CN104652643 B CN 104652643B
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Abstract
The invention relates to a self-reset high-energy-consumption shape-memory-alloy friction damper. The self-reset high-energy-consumption shape-memory-alloy friction damper comprises an upper ring flange and a lower ring flange, wherein an upper slideway is arranged on the lower surface of the upper ring flange, a lower slideway parallel to the upper slideway is arranged on the upper surface of the lower ring flange, the upper slideway is in sliding connection with at least two upper slide blocks through upper friction pairs, every two adjacent upper slide blocks are connected through an upper shape memory alloy wire, the lower slideway is in sliding connection with lower slide blocks through lower friction pairs, the number of the lower slide blocks is one more than that of the upper slide blocks, any upper slide block is connected with each of the corresponding lower slide blocks below the two sides of the corresponding upper slide block through a connecting rod, the upper and lower ends of the connecting rods are respectively hinged with the upper and lower slide blocks, and limiting members which are located at the two ends of the a lower rail are arranged on the upper surface of the lower ring flange. According to the self-reset high-energy-consumption shape-memory-alloy friction damper, the characteristics that shape memory alloy has self-reset capability and friction elements are high in energy consumption are comprehensively utilized, so that the aims of vertical vibration control and self resetting for engineering structures can be realized.
Description
Technical field
The technical field the invention belongs to civil structure is prevented and reduced natural disasters is and in particular to a kind of Self-resetting highly energy-consuming shape memory closes
Golden frcition damper.
Background technology
Engineering structure antidetonation is one of the emphasis problem that must study in field of engineering technology.It is heavy that strong earthquake brings
Pain disaster is obvious to all, and a large amount of building structure are destroyed overnight under severe earthquake action, thus causing huge economy and social loss.
Therefore it is necessary to structure is carried out with science and strict Aseismic Design in civil structure design.Structural vibration control technology is anti-
Shake design provides effective method for designing and approach.Structural vibration control is by absorbing, vibration isolation or to pass through outside actively defeated
Enter energy to control the level of vibration of project subject structure, in order to avoid strong vibration leads to destruction or the damage of engineering structure.?
In Practical Project, it is the dynamicss changing structure by installing certain element or device in the structure, thus reaching
The purpose of structural vibration control.
Traditional vibration isolation technique is highly developed as main structural vibration control means, but application in current engineering
The problem that isolation mounting still suffers from has: Self-resetting poor performance after shake, such as frcition damper and soft firm antivibrator etc.；More difficult dimension
Shield, such as viscous damper etc.；Durability and corrosion resistance are poor, and the rubber blanket of such as rubber shock absorber is easily aging.Shape memory
Alloy is a kind of new material, has shape memory effect and the pseudoelasticity (super-elasticity) of uniqueness.Wherein shape memory effect makes
This alloy has a stronger energy dissipation capacity, and pseudoelasticity makes marmem have large deformation from recovery capacity and certain stagnant
Energy dissipation capacity afterwards, and possess outstanding corrosion-resistant, anti-fatigue performance, current vibration isolation can be overcome using the vibration isolator that it constructs
The drawbacks described above of device.But utilize merely pseudoelastic shape-memory alloy to construct antivibrator, it appears energy dissipation capacity is not enough.And it is comprehensive
Pseudoelasticity and shape memory effect using marmem can make design of Structural Parameters excessively complicated, and cost is higher, and
It is not easy to engineer applied.
China Patent Publication No. discloses a kind of compound shape memory alloy damper for cn 103899705 a, using by
Foam rubber vibration isolator structure constitutes flexible member and marmem hysteretic energy characteristic carries out vibration damping, but, using elasticity
Element passive energy dissipation effect is limited, in addition, different installing spaces, the physical dimension of antivibrator is difficult to adjust, and substantially will need
Redesign antivibrator.Therefore, need badly and design a kind of new composite vibration isolator to solve the above problems.
Content of the invention
The present invention in order to solve weak point of the prior art, provides that a kind of self-resetting capability is strong, easy to maintain, power consumption
The Self-resetting highly energy-consuming shape memory alloy frictional damper high, fatigue resistance is strong and corrosion resistance is good.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that a kind of Self-resetting highly energy-consuming shape memory closes
Golden frcition damper, including horizontally disposed upper flange plate and lower flange, upper flange plate lower surface is provided with sliding way, lower flange
Disk upper surface is provided with the glide path parallel with sliding way, and sliding way slidably connects at least two top shoes by upper friction pair,
Connected by upper shape-memory alloy wire between two neighboring top shoe, glide path slidably connects downslide by lower friction pair
Block, the number of sliding block, one more than top shoe, is connected by lower shape-memory alloy wire between two neighboring sliding block, arbitrarily
One top shoe is respectively positioned on the surface at the lower shape-memory alloy wire midpoint between two sliding blocks, and any one top shoe divides
It is not connected by a connecting rod with the sliding block of down either side, small end and lower end are hinged soon with top shoe and downslide respectively,
Lower flange upper surface is provided with the locating part positioned at lower railway two ends.
Described locating part includes block/ring that fixation is located on lower flange, is provided with and sliding block top pressure inside block/ring
Block rubber/the circle of cooperation.
Described lower shape-memory alloy wire two ends are connected with sliding block by lower clamp respectively, upper shape-memory alloy wire two
End is connected with top shoe by upper fixture respectively.
Using technique scheme, when antivibrator is installed in engineering structure, structure pressurized or occur vertical collision
When, vertical relative displacement will occur, now structure is consumed energy by friction pair.Meanwhile shape-memory alloy wire dilatation,
Because it has pseudoelasticity, in unloading, marmem can make its structure automatically reset, and also can dissipate part energy simultaneously
Amount, to mitigate the vibration of structure.
When deforming excessive, locating part can be with the maximum distortion of control structure, and the elasticity of block rubber/circle can reduce simultaneously
Vibration.
Sliding way and glide path are machined with upper flange plate and lower flange, top shoe and sliding block can be respectively upper respectively
Transverse shifting in slideway and glide path.
The top shoe quantity fast with downslide and its arrangement determine according to the installing space of damping requirements and engineering structure.
Sliding fast and connecting rod quantity is adjustable, and slide block can be all freely it is also possible to partly fix in the position of slideway.
Whether upper flange plate and lower flange arrange the actual feelings according to vibration-proof structure for the arrangement in installing hole and installing hole hole
Condition is determined.
In slideway bottom surface and slider bottom bonding politef formed sliding friction pair.
After shape-memory alloy wire passes through slide block, end fixture is clamped fixing.Shape-memory alloy wire is single
Or it is several.Shape-memory alloy wire is niti alloy.
The invention comprehensively utilizes the self-resetting capability of marmem and friction element highly energy-consuming feature, achievable work
Journey structure is in the purpose of vertical vibration control and self-resetting.And the maximum change of elastic limit device control structure is set
Shape, also can reduce vibration simultaneously.This damper structure is simply it is easy to process, easy for installation flexible, strong applicability, Er Qienai
Property is strong with corrosion resistance long, has broad application prospects.
Brief description
Fig. 1 is the structural representation of the present invention.
Specific embodiment
As shown in figure 1, a kind of Self-resetting highly energy-consuming shape memory alloy frictional damper of the present invention, including being horizontally disposed with
Upper flange plate 1 and lower flange 2, upper flange plate 1 lower surface is provided with sliding way 3, and lower flange 2 upper surface is provided with and sliding way
3 parallel glide paths 4, sliding way 3 slidably connects at least two top shoes 5, two neighboring top shoe 5 by upper friction pair 7
Between connected by upper shape-memory alloy wire 6, glide path 4 slidably connects sliding block 9 by lower friction pair 8, sliding block 9
Number, than top shoe more than 5 one, is connected by lower shape-memory alloy wire 10 between two neighboring sliding block 9, on any one
Slide block 5 is respectively positioned on the surface at lower shape-memory alloy wire 10 midpoint between two sliding blocks 9,5 points of any one top shoe
It is not connected by a connecting rod 11 with the sliding block 9 of down either side, connecting rod 11 top and bottom are fast with top shoe 5 and downslide respectively
Hinged, lower flange 2 upper surface is provided with the locating part positioned at lower railway two ends.
Locating part includes block/ring 12 that fixation is located on lower flange 2, is provided with and pushes up with sliding block 9 inside block/ring 12
Block rubber/the circle 13 of press-fit.
Lower shape-memory alloy wire 10 two ends are connected with sliding block 9 by lower clamp 14 respectively, upper shape-memory alloy wire 6
Two ends are connected with top shoe 5 by upper fixture 15 respectively.
When antivibrator is installed in engineering structure, structure pressurized or occur vertical collision when, will occur vertical with respect to
Displacement, now structure consumed energy by friction pair.Meanwhile shape-memory alloy wire dilatation, because it has pseudoelasticity,
In unloading, marmem can make its structure automatically reset, and also can dissipate portion of energy, to mitigate shaking of structure simultaneously
Dynamic.
When deforming excessive, locating part can be with the maximum distortion of control structure, and the elasticity of block rubber/circle 13 can drop simultaneously
Low vibration.
Sliding way 3 and glide path 4 are machined with upper flange plate 1 and lower flange 2, top shoe 5 and sliding block 9 can divide respectively
Transverse shifting not in sliding way 3 and glide path 4.
Top shoe 5 quantity fast with downslide and its arrangement determine according to the installing space of damping requirements and engineering structure.
Sliding fast and connecting rod 11 quantity is adjustable, and slide block can be all freely it is also possible to partly fix in the position of slideway.
Whether upper flange plate 1 and lower flange 2 arrange the reality according to vibration-proof structure for the arrangement in installing hole and installing hole hole
Situation is determined.
In slideway bottom surface and slider bottom bonding politef formed sliding friction pair.
After shape-memory alloy wire passes through slide block, end fixture is clamped fixing.Shape-memory alloy wire is single
Or it is several.Shape-memory alloy wire is niti alloy.
The invention comprehensively utilizes the self-resetting capability of marmem and friction element highly energy-consuming feature, achievable work
Journey structure controls the purpose with self-resetting in vertical vibration.And the maximum distortion of elastic limit device control structure is set,
Also vibration can be reduced simultaneously.This damper structure is simply it is easy to process, easy for installation flexible, strong applicability, and durability
Strong with corrosion resistance, have broad application prospects.
The concrete installation steps of the present invention are as follows:
Step 1: dynamic analyses are carried out to engineering structure, is required according to damping property and engineering structure installing space sets
The design parameter of meter antivibrator.
Step 2: sliding way 3 and glide path 4 are processed respectively on upper flange plate 1 and lower flange 2, and in sliding way 3 He
Glide path 4 bottom adhesive politef.
Step 3: setting endoporus is with shape-memory alloy wire on being respectively mounted 6 and lower shape on top shoe 5 and sliding block 9
Memory alloy wire 10, bottom adhesive politef, determine connecting rod 11 link position.
Step 4: be respectively arranged top shoe 5 and sliding block 9 in sliding way 3 and glide path 4, connect different cunnings with connecting rod 11
Slide block between road.
Step 5: connect the slide block on same slideway with shape-memory alloy wire, end fixture is fixed.
Step 6: determine the position of locating part and locating part is set.
Step 7: be connected with engineering structure with lower flange 2 by upper flange plate 1.
Above example is only in order to illustrative and not limiting technical scheme, although reference above-described embodiment is to this
Bright be described in detail, it will be understood by those within the art that: still the present invention can be modified or wait
With replacing, any modification or partial replacement without departing from the spirit and scope of the present invention, it all should cover the power in the present invention
In the middle of sharp claimed range.
Claims (3)
1. a kind of Self-resetting highly energy-consuming shape memory alloy frictional damper it is characterised in that: include horizontally disposed upper flange
Disk and lower flange, upper flange plate lower surface is provided with sliding way, and lower flange upper surface is provided with the glide path parallel with sliding way,
Sliding way slidably connects at least two top shoes by upper friction pair, is closed by upper shape memory between two neighboring top shoe
Spun gold connects, and glide path slidably connects sliding block by lower friction pair, the number of sliding block one more than top shoe, adjacent two
Connected by lower shape-memory alloy wire between individual sliding block, any one top shoe is respectively positioned on the lower shape between two sliding blocks
The surface at shape memory alloys silk midpoint, any one top shoe passes through a connecting rod even with the sliding block of down either side respectively
Connect, small end and lower end are hinged with top shoe and sliding block respectively, and lower flange upper surface is provided with positioned at lower railway two ends
Locating part.
2. a kind of Self-resetting highly energy-consuming shape memory alloy frictional damper according to claim 1 it is characterised in that: institute
State locating part and include block/ring that fixation is located on lower flange, inside block/ring, be provided with the rubber with the cooperation of sliding block top pressure
Block/circle.
3. a kind of Self-resetting highly energy-consuming shape memory alloy frictional damper according to claim 1 and 2, its feature exists
In: described lower shape-memory alloy wire two ends are connected with sliding block by lower clamp respectively, and upper shape-memory alloy wire two ends are divided
Tong Guo upper fixture not be connected with top shoe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510048885.7A CN104652643B (en) | 2015-01-30 | 2015-01-30 | Self-reset high-energy-consumption shape-memory-alloy friction damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510048885.7A CN104652643B (en) | 2015-01-30 | 2015-01-30 | Self-reset high-energy-consumption shape-memory-alloy friction damper |
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| Publication Number | Publication Date |
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| CN104652643A CN104652643A (en) | 2015-05-27 |
| CN104652643B true CN104652643B (en) | 2017-01-25 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457515B (en) * | 2018-05-21 | 2023-12-26 | 黄淮学院 | Three-slider full-reset type SMA friction damper |
| CN110924556B (en) * | 2019-12-18 | 2021-03-30 | 哈尔滨工业大学 | Self-resetting shock-absorbing anti-collapse structure for frame structure |
| CN113756635B (en) * | 2021-10-15 | 2022-05-06 | 重庆大学 | Damping sleeve configured with self-resetting connecting rod and energy dissipation and shock absorption method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4565039A (en) * | 1984-03-07 | 1986-01-21 | Ohbayashi-Gumi, Ltd. | Floor structure for reducing vibration |
| CN201144461Y (en) * | 2008-01-09 | 2008-11-05 | 广西大学 | Profiled bar connective girder with friction damping node |
| CN102425242A (en) * | 2011-09-07 | 2012-04-25 | 湖南大学 | Sliding type performance-adjustable shape memory alloy damper |
| CN102628300A (en) * | 2012-05-02 | 2012-08-08 | 广西大学 | Steel truss control connecting beam with friction node |
| CN102734367A (en) * | 2012-05-11 | 2012-10-17 | 青岛科而泰环境控制技术有限公司 | Friction damper |
| CN204435591U (en) * | 2015-01-30 | 2015-07-01 | 河南理工大学 | Shape memory alloy friction Long Distances re-centring damper |
-
2015
- 2015-01-30 CN CN201510048885.7A patent/CN104652643B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4565039A (en) * | 1984-03-07 | 1986-01-21 | Ohbayashi-Gumi, Ltd. | Floor structure for reducing vibration |
| CN201144461Y (en) * | 2008-01-09 | 2008-11-05 | 广西大学 | Profiled bar connective girder with friction damping node |
| CN102425242A (en) * | 2011-09-07 | 2012-04-25 | 湖南大学 | Sliding type performance-adjustable shape memory alloy damper |
| CN102628300A (en) * | 2012-05-02 | 2012-08-08 | 广西大学 | Steel truss control connecting beam with friction node |
| CN102734367A (en) * | 2012-05-11 | 2012-10-17 | 青岛科而泰环境控制技术有限公司 | Friction damper |
| CN204435591U (en) * | 2015-01-30 | 2015-07-01 | 河南理工大学 | Shape memory alloy friction Long Distances re-centring damper |
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