CN114776121A - Self-resetting shape memory alloy-foamed aluminum-based composite damper - Google Patents
Self-resetting shape memory alloy-foamed aluminum-based composite damper Download PDFInfo
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- CN114776121A CN114776121A CN202210580227.2A CN202210580227A CN114776121A CN 114776121 A CN114776121 A CN 114776121A CN 202210580227 A CN202210580227 A CN 202210580227A CN 114776121 A CN114776121 A CN 114776121A
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- pressing plate
- foamed aluminum
- based composite
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- shape memory
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 56
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 239000002131 composite material Substances 0.000 title claims abstract description 50
- 238000003825 pressing Methods 0.000 claims abstract description 73
- 238000007789 sealing Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 239000003190 viscoelastic substance Substances 0.000 claims description 12
- 230000033001 locomotion Effects 0.000 claims description 7
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 6
- 229920002396 Polyurea Polymers 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 229920001021 polysulfide Polymers 0.000 claims description 3
- 239000005077 polysulfide Substances 0.000 claims description 3
- 150000008117 polysulfides Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims 3
- 238000005265 energy consumption Methods 0.000 abstract description 10
- 239000011159 matrix material Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 10
- 230000006870 function Effects 0.000 abstract description 8
- 238000010521 absorption reaction Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 230000035939 shock Effects 0.000 abstract description 7
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 abstract description 3
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 43
- 239000006260 foam Substances 0.000 description 11
- 238000013016 damping Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Images
Classifications
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- 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
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- 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
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0237—Structural braces with damping devices
Abstract
The invention discloses a self-resetting shape memory alloy-foamed aluminum matrix composite damper, and belongs to the technical field of seismic resistance, energy dissipation and shock absorption of engineering structures. The damper comprises an upper pressing plate, a lower pressing plate and an intermediate pressing plate positioned between the upper pressing plate and the lower pressing plate, wherein the intermediate pressing plate divides the space between the upper pressing plate and the lower pressing plate into an upper cavity and a lower cavity, the intermediate pressing plate is connected with a push-pull rod, the parts of the push-pull rod positioned in the upper cavity and the lower cavity are respectively sleeved with a foamed aluminum-based composite material, the push-pull rod radially limits the foamed aluminum-based composite material, SMA wires are arranged in the upper cavity and the lower cavity, the SMA wires penetrate through a ring buckle on a connecting plate, and two ends of the SMA wires are respectively tensioned and fixed by a clamp. When the damper works, the foamed aluminum-based composite material and the SMA wire work simultaneously and consume energy together; after the vibration, the SMA wire has excellent deformation recovery capability, so that the damper is recovered to the original state, the self-reset function is achieved, and the high energy consumption and the self-reset function of the damper are well realized in the whole process.
Description
Technical Field
The invention belongs to the technical field of seismic resistance, energy dissipation and shock absorption of engineering structures, and particularly relates to a self-resetting shape memory alloy-foamed aluminum-based composite damper.
Background
Earthquake has been random, sudden and uncertain for a long time, which brings great loss to human life safety and property, and collapse damage of buildings is an important cause of casualties and economic loss. Therefore, how to alleviate the damage of the building structure under the earthquake disaster to the maximum extent is one of the problems to be solved in the earthquake-resistant field at present. With the improvement of scientific technology and the living standard of people, the structure damping control technology is rapidly developed and widely applied as an effective method for resisting earthquake and becomes a mature technology. The energy dissipation and shock absorption method for controlling the earthquake response of the structure by arranging the damper in the structure is an effective, safe, economic and reliable shock absorption method in the structure shock absorption control technology.
Aluminum foam based composites are high damping materials made by filling open cell aluminum foam structures with viscoelastic materials. The material is an aluminum and viscoelastic material interwoven composite material, has poor performance in a tensile state, and shows excellent performance in a compression state, such as high damping, high energy absorption, large deformation and the like. Under the action of cyclic compression load, the high energy consumption of the material is the result of the combined action of various energy dissipation mechanisms, including the intrinsic damping of foamed aluminum and a viscoelastic material, the interface sliding damping of two phases of the aluminum and the viscoelastic material, the dislocation damping of the aluminum and the viscoelastic material caused by large difference of thermal expansion coefficients, the restorable extrusion energy consumption of the viscoelastic material and the like, so that the material is a novel damping material with wide application prospect. Although the material has a good energy consumption effect, residual deformation can occur after loading, and the material is not beneficial to continuous use.
Shape Memory Alloy (SMA) is a new type of intelligent material that combines many excellent characteristics into one body. In recent years, SMA with superelastic characteristics is widely used in the research and development of energy consumption devices, and SMA wires, rods, stranded wires, coil springs, belleville springs and the like are used. Compared with the traditional energy dissipation device, the SMA energy dissipation device has the advantages of good durability and corrosion resistance, fatigue resistance, self-resetting and the like. However, dampers developed using superelastic SMA as the only energy dissipating material typically suffer from limited energy dissipating capabilities, and thus have limited applications.
Through retrieval, chinese patent application No. 201510765509.X discloses a combined type compressible foamed aluminum composite damper, which comprises an upper connecting rod, an upper cover plate, a first middle clamping plate, a second middle clamping plate, a third middle clamping plate, a plurality of foamed aluminum composites, a lower connecting rod, a first screw rod and a second screw rod; the upper connecting rod comprises a first rod and a second rod vertically connected with the first rod; wherein, upper cover plate, first middle splint, second pole, lower connecting rod from the top down set up and certain distance in proper order relatively, and upper cover plate, first middle splint, second pole, lower connecting rod are parallel to each other. The application flexibly integrates a plurality of small-thickness foamed aluminum composite materials together in a series and parallel combination mode, thereby realizing the shock absorption effect. However, the damper of the application has a single energy consumption form, and generates a large residual deformation after an earthquake.
Disclosure of Invention
1. Problems to be solved
The invention provides a self-resetting shape memory alloy-foamed aluminum matrix composite damper, aiming at the problems that the existing damper is single in energy consumption form and can generate large residual deformation after an earthquake. The damper has the advantages of high energy consumption and self-resetting function, can effectively reduce the earthquake reaction of an engineering structure, and is simple in structure and convenient to manufacture.
2. Technical scheme
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the invention relates to a self-resetting shape memory alloy-foam aluminum matrix composite damper, which comprises an upper pressing plate, a lower pressing plate and a middle pressing plate positioned between the upper pressing plate and the lower pressing plate, wherein the middle pressing plate divides the space between the upper pressing plate and the lower pressing plate into an upper cavity and a lower cavity, the middle pressing plate is connected with a push-pull rod, the parts of the push-pull rod positioned in the upper cavity and the lower cavity are respectively sleeved with a foam aluminum matrix composite, the push-pull rod radially limits the foam aluminum matrix composite, resetting pieces are respectively arranged in the upper cavity and the lower cavity, and the resetting pieces alternately perform stretching and retracting motions along with the movement of the push-pull rod.
Furthermore, the reset piece is an SMA wire, one end of the SMA wire in the upper chamber is fixed on the upper pressure plate, the other end of the SMA wire in the upper chamber is fixed on the middle pressure plate, one end of the SMA wire in the lower chamber is fixed on the lower pressure plate, and the other end of the SMA wire in the lower chamber is fixed on the middle pressure plate.
Furthermore, a connecting plate is arranged between the upper pressing plate and the lower pressing plate, a ring buckle is arranged on the connecting plate, and the SMA wire penetrates through the ring buckle and then is fixed with the pressing plate.
Furthermore, all be equipped with anchor clamps on top board, holding down plate and the middle clamp plate, the both ends of SMA silk are fixed through anchor clamps.
Furthermore, the connecting plate comprises an upper end part, a lower end part and a middle part, wherein the upper end part and the lower end part are respectively fixed with the upper pressing plate and the lower pressing plate, the ring buckles are arranged on the middle part, and the number of the connecting plates is consistent with that of the reset pieces in a single chamber.
Furthermore, the reset pieces in the upper chamber are at least 2, the 2 reset pieces are symmetrically arranged by taking the push-pull rod as a center, and the number and the arrangement mode of the reset pieces in the lower chamber are consistent with those in the upper chamber.
Furthermore, each SMA wire is provided with 2 buckles, and the positions of the buckles correspond to the positions of the clamps one by one.
Furthermore, the SMA wires in the upper chamber are provided with 4, and the 4 SMA wires are distributed in an annular shape at equal intervals.
Furthermore, a sealing cover is fixed on the upper pressure plate, a connecting rod is arranged on the sealing cover, and the sealing cover is provided with an inner cavity for the push-pull rod to move.
Further, the foamed aluminum-based composite material is machined and comprises a foamed aluminum structure and a viscoelastic material filled in the foamed aluminum structure, wherein the viscoelastic material is polyurethane, silicon rubber, polysulfide rubber or polyurea.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the self-resetting shape memory alloy-foamed aluminum-based composite material damper, the SMA wire is fixed between the upper pressing plate and the middle pressing plate and between the lower pressing plate and the middle pressing plate, so that the foamed aluminum-based composite material is compressed and the SMA wire is pulled no matter the push-pull rod is under pressure or tension, and the foamed aluminum-based composite material and the SMA wire work simultaneously under the action of alternate load of the push-pull rod, so that the energy is consumed together; after the vibration, the SMA wire has excellent deformation recovery capability, so that the damper is recovered to the original state to achieve the self-reset function, and the high energy consumption and the self-reset function of the damper are well realized in the whole process;
(2) according to the self-resetting shape memory alloy-foam aluminum-based composite material damper, the space between the upper pressing plate and the lower pressing plate is divided into the upper cavity and the lower cavity by the middle pressing plate, the push-pull rod sequentially penetrates through the upper pressing plate, the middle pressing plate and the lower pressing plate and is fixed with the middle pressing plate, and the foam aluminum-based composite material is sleeved on the parts, located in the upper cavity and the lower cavity, of the push-pull rod, so that the movement of the foam aluminum-based composite material in the radial direction of the push-pull rod is limited, the problem that the foam aluminum-based composite material is not easy to connect is solved, and the stability of the foam aluminum-based composite material in the working process is ensured;
(3) the invention relates to a self-resetting shape memory alloy-foamed aluminum matrix composite damper, wherein a connecting plate is arranged between an upper pressing plate and a lower pressing plate, a ring buckle is arranged on the connecting plate, clamps are arranged on a middle pressing plate, the upper pressing plate and the lower pressing plate, an SMA wire passes through the ring buckle on the connecting plate, and two ends of the SMA wire are respectively tensioned and fixed by the clamps; the design makes the fixing of the SMA wire more convenient, and meanwhile, the integral output of the SMA wire is more stable in the working process.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a self-resetting shape memory alloy-foamed aluminum matrix composite damper of the present invention;
FIG. 2 is a front view of the damper of the present invention;
FIG. 3 is a top view of the damper of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;
fig. 6 is a cross-sectional view taken along line C-C in fig. 4.
In the figure: 11. an upper pressure plate; 12. a lower pressing plate; 13. a connecting plate; 14. buckling;
2. an intermediate pressing plate; 3. a foamed aluminum-based composite material; 4. a push-pull rod; 5. a reset member; 6. a clamp; 7. sealing the cover; 8. and connecting bolts.
Detailed Description
The invention is further described with reference to specific examples.
Example 1
As shown in fig. 1 and fig. 2, the self-resetting shape memory alloy-foamed aluminum matrix composite damper of the embodiment includes an upper pressing plate 11, a lower pressing plate 12 and an intermediate pressing plate 2 located between the upper pressing plate and the lower pressing plate, the intermediate pressing plate 2 divides a space between the upper pressing plate and the lower pressing plate into an upper chamber and a lower chamber, the intermediate pressing plate 2 is connected with a push-pull rod 4, the push-pull rod 4 sequentially penetrates through the upper pressing plate 11, the intermediate pressing plate 2 and the lower pressing plate 12 and is fixedly connected with the intermediate pressing plate 2, the portions of the push-pull rod 4 located in the upper chamber and the lower chamber are all sleeved with foamed aluminum matrix composite 3, the push-pull rod 4 radially limits the foamed aluminum matrix composite 3, and the upper chamber and the lower chamber are both provided with a resetting piece 5, and the resetting piece 5 alternately performs stretching and retracting motions along with the movement of the push-pull rod 4.
The reset piece 5 is an SMA wire, one end of the SMA wire in the upper chamber is fixed on the upper pressure plate 11, the other end of the SMA wire in the upper chamber is fixed on the middle pressure plate 2, one end of the SMA wire in the lower chamber is fixed on the lower pressure plate 12, and the other end of the SMA wire in the lower chamber is fixed on the middle pressure plate 2. Therefore, no matter the push-pull rod 4 is under pressure or tension, the foamed aluminum-based composite material 3 is under compression action, the SMA wire is under tension action, and under the action of alternate load of the push-pull rod 4, the foamed aluminum-based composite material 3 and the SMA wire work simultaneously and consume energy together; after the vibration, the SMA wire has excellent deformation recovery capability, so that the damper is recovered to the original state, the self-reset function is achieved, and the high energy consumption and the self-reset function of the damper are well realized in the whole process.
As shown in fig. 4, a connecting plate 13 is disposed between the upper pressing plate 11 and the lower pressing plate 12, and the connecting plate 13 plays a supporting role. Connecting plate 13 includes upper end, lower tip and intermediate part, and the upper end passes through connecting bolt 8 to be fixed with top board 11, and the lower tip passes through connecting bolt 8 to be fixed with lower plate 12, and the intermediate part is the arc, is equipped with latch closure 14 on this intermediate part, and this latch closure 14 distributes along the vertical central line of intermediate part. In addition, the upper surface and the lower surface of the middle pressure plate 2, the upper pressure plate 11 and the lower pressure plate 12 are all provided with a clamp 6, the SMA wire passes through a ring buckle 14 on a connecting plate 13, and two ends of the SMA wire are respectively tensioned and fixed by the clamp 6. The design makes the fixing of the SMA wire more convenient, and meanwhile, the integral output of the SMA wire is more stable in the working process.
Wherein the number of the connecting plates 13 is the same as the number of the SMA wires in a single cavity. And at least 2 SMA wires are arranged in a single cavity, the 2 SMA wires are symmetrically arranged by taking the push-pull rod 4 as a center, and the number and the arrangement mode of the reset pieces 5 in the upper cavity and the lower cavity are consistent with those in the upper cavity. Specifically, in this embodiment, the connecting plate 13 is provided with 4 pieces, and 4 SMA wires are respectively arranged in the upper chamber and the lower chamber, and the 4 SMA wires are distributed in an annular shape at equal intervals. In addition, each SMA wire is provided with 2 buckles 14, and the positions of the buckles 14 correspond to the positions of the clamps 6 one by one.
The damper of the embodiment further comprises a sealing cover 7, the sealing cover 7 is fixed with the upper pressure plate 11 through a connecting bolt 8, a connecting rod is arranged on the sealing cover 7, and the sealing cover 7 is provided with an inner cavity for the push-pull rod 4 to move in a telescopic mode. When the push-pull rod 4 and the sealing cover 7 are in relative displacement, because the upper pressing plate 11, the lower pressing plate 12 and the connecting plate 13 are fixedly connected with the sealing cover 7, the movement of the upper pressing plate 11, the lower pressing plate 12 and the connecting plate 13 can be limited, and therefore, when the push-pull rod 4 is pulled, the foam aluminum-based composite material 3 positioned at the lower part of the middle pressing plate 2 can be compressed by the middle pressing plate 2; when the push-pull rod 4 is pressed, the foamed aluminum-based composite material 3 positioned on the upper part of the middle pressing plate 2 is compressed by the middle pressing plate 2; and the SMA wire is always under the action of tension in the alternating process of the tension and compression loads of the push-pull rod 4.
In addition, the foamed aluminum-based composite material 3 in this embodiment is a circular cylinder, and the foamed aluminum-based composite material 3 is machined. Specifically, the high damping material is prepared by filling a viscoelastic material into an open-cell foamed aluminum structure, and is assembled and used on site according to the size of the push-pull rod. The viscoelastic material is polyurethane, silicon rubber, polysulfide rubber, polyurea and the like, and has the characteristics of high tensile elongation at break, excellent rebound resilience and the like.
According to the self-resetting shape memory alloy-foamed aluminum-based composite material damper, the problem that the foamed aluminum-based composite material is not easy to connect is solved by fixing the foamed aluminum-based composite material 3 through the push-pull rod 4. In addition, the damper of this embodiment, simple structure, preparation convenience, and have high power consumption concurrently and from reset function, can effectively reduce the earthquake reaction of engineering structure, effectively promote engineering structure shock resistance, have broad popularization application prospect. During the use, install this attenuator in the position department that the structure can produce relative displacement, when the structure vibration, attenuator both sides member can produce relative displacement, and the most energy of input structure is dissipated by the attenuator to protection major structure, the vibration stops the back, and the attenuator resets.
The present invention and its embodiments have been described above schematically, and the description is not intended to be limiting, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (10)
1. The utility model provides a from restoring to throne shape memory alloy-aluminium base composite damper, includes top board (11), holding down plate (12) and is located middle clamp plate (2) between upper and lower holding down plate, and this middle clamp plate (2) will go up the space division between the holding down plate two upper and lower cavities, its characterized in that: middle clamp plate (2) be connected with push-and-pull rod (4), the part that this push-and-pull rod (4) are located upper and lower cavity all overlaps and is equipped with foamed aluminium base combined material (3), push-and-pull rod (4) carry out radial spacing to foamed aluminium base combined material (3), and all be equipped with in upper and lower cavity reset piece (5), this reset piece (5) is along with the removal of push-and-pull rod (4), stretch and the motion of contracting in turn.
2. The self-resetting shape memory alloy-foamed aluminum-based composite damper of claim 1, characterized in that: the reset piece (5) is an SMA wire, one end of the SMA wire in the upper cavity is fixed on the upper pressing plate (11), the other end of the SMA wire in the upper cavity is fixed on the middle pressing plate (2), one end of the SMA wire in the lower cavity is fixed on the lower pressing plate (12), and the other end of the SMA wire in the lower cavity is fixed on the middle pressing plate (2).
3. The self-resetting shape memory alloy-foamed aluminum-based composite damper according to claim 2, characterized in that: a connecting plate (13) is arranged between the upper pressing plate (11) and the lower pressing plate (12), a buckle (14) is arranged on the connecting plate (13), and the SMA wire penetrates through the buckle (14) and then is fixed with the pressing plate.
4. The self-resetting shape memory alloy-foamed aluminum-based composite damper of claim 3, wherein: all be equipped with anchor clamps (6) on top board (11), holding down plate (12) and middle clamp plate (2), the both ends of SMA silk are fixed through anchor clamps (6).
5. The self-resetting shape memory alloy-foamed aluminum-based composite damper according to claim 4, characterized in that: the connecting plate (13) comprises an upper end part, a lower end part and a middle part, wherein the upper end part and the lower end part are respectively fixed with the upper pressing plate and the lower pressing plate, the ring buckle (14) is arranged on the middle part, and the number of the connecting plate (13) is consistent with that of the reset pieces (5) in a single chamber.
6. A self-resetting shape memory alloy-foamed aluminum-based composite damper according to any one of claims 1 to 5, characterized in that: reset piece (5) in the upper chamber set up 2 at least, and 2 reset piece (5) use push-and-pull rod (4) as central symmetry and set up, and the quantity and the mode of setting up of the piece that resets (5) in the lower chamber are unanimous with in the upper chamber.
7. The self-resetting shape memory alloy-foamed aluminum-based composite damper of claim 6, wherein: each SMA wire is provided with 2 buckles (14), and the positions of the buckles (14) correspond to the positions of the clamps (6) one by one.
8. The self-resetting shape memory alloy-foamed aluminum-based composite damper of claim 7, characterized in that: the SMA wires in the upper chamber are provided with 4 pieces, and the 4 pieces of SMA wires are distributed in an annular shape at equal intervals.
9. The self-resetting shape memory alloy-foamed aluminum-based composite damper according to claim 8, characterized in that: a sealing cover (7) is fixed on the upper pressure plate (11), a connecting rod is arranged on the sealing cover (7), and the sealing cover (7) is provided with an inner cavity for the push-pull rod (4) to move.
10. The self-resetting shape memory alloy-foamed aluminum-based composite damper of claim 9, wherein: the foamed aluminum-based composite material (3) is machined and comprises a foamed aluminum structure and a viscoelastic material filled in the foamed aluminum structure, wherein the viscoelastic material is polyurethane, silicon rubber, polysulfide rubber or polyurea.
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| CN202210580227.2A CN114776121B (en) | 2022-05-26 | 2022-05-26 | Self-resetting shape memory alloy-foam aluminum matrix composite damper |
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| CN202210580227.2A CN114776121B (en) | 2022-05-26 | 2022-05-26 | Self-resetting shape memory alloy-foam aluminum matrix composite damper |
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| CN114776121B CN114776121B (en) | 2024-03-22 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994353A (en) * | 2010-11-24 | 2011-03-30 | 沈阳建筑大学 | Self resetting shape memory alloy (SMA) viscous damper |
| CN105350677A (en) * | 2015-11-11 | 2016-02-24 | 东南大学 | Combined damper made by foamed aluminum combined material having compressibility |
| CN105625599A (en) * | 2016-03-25 | 2016-06-01 | 大连理工大学 | Reset shape memory alloy-extrusion type lead composite energy consumption damper |
| CN208039514U (en) * | 2018-03-23 | 2018-11-02 | 长安大学 | A kind of Self-resetting energy-consumption damper |
-
2022
- 2022-05-26 CN CN202210580227.2A patent/CN114776121B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994353A (en) * | 2010-11-24 | 2011-03-30 | 沈阳建筑大学 | Self resetting shape memory alloy (SMA) viscous damper |
| CN105350677A (en) * | 2015-11-11 | 2016-02-24 | 东南大学 | Combined damper made by foamed aluminum combined material having compressibility |
| CN105625599A (en) * | 2016-03-25 | 2016-06-01 | 大连理工大学 | Reset shape memory alloy-extrusion type lead composite energy consumption damper |
| CN208039514U (en) * | 2018-03-23 | 2018-11-02 | 长安大学 | A kind of Self-resetting energy-consumption damper |
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| CN114776121B (en) | 2024-03-22 |
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