AU2020102373A4 - Self-Resetting Ferromagnetic Shape Memory Alloy Compound Damper and Working Method Thereof - Google Patents
Self-Resetting Ferromagnetic Shape Memory Alloy Compound Damper and Working Method Thereof Download PDFInfo
- Publication number
- AU2020102373A4 AU2020102373A4 AU2020102373A AU2020102373A AU2020102373A4 AU 2020102373 A4 AU2020102373 A4 AU 2020102373A4 AU 2020102373 A AU2020102373 A AU 2020102373A AU 2020102373 A AU2020102373 A AU 2020102373A AU 2020102373 A4 AU2020102373 A4 AU 2020102373A4
- Authority
- AU
- Australia
- Prior art keywords
- outer sheet
- sheet
- resetting
- damper
- self
- 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.)
- Ceased
Links
Classifications
-
- 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
-
- 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
Abstract
OF THE DISCLOSURE
The present invention provides a self-resetting FSMA (Ferromagnetic Shape Memory
Alloy) compound damper, comprising an outer sheet and an inner sheet located at the
5 middle part of the outer sheet. The outer sheet and the inner sheet are in a pressed
connection with a plurality of pre-tensioned bolts; an SMA (Shape Memory Alloy)
stranded wire is provided between the outer sheet and the inner sheet; the two ends of the
SMA stranded wire are fixed on a top face or a bottom face of the outer sheet, respectively;
and the middle part of the SMA stranded wire is fixed on the inner sheet. The
10 self-resetting FSMA compound damper is simple in structure and rational in design, and
has the same mechanical properties during forward loading and backward loading. The
present invention improves the reliability in friction energy dissipation and self-resetting.
Moreover, the present invention simplifies the force-receiving path for the damper, brings
convenience in design, manufacture and installation, and has a huge application prospect.
15
13
7
__0 0
FIG. 1
56
T--n T--n/ F.3
FIG. 2
FIG. 3
Description
__0 0
7
FIG. 1
56
T--n F.3T--n/
FIG. 2
FIG. 3
P/00/009 Regulation 3.2 AUSTRALIA Patents Act 1990
Invention title: Self-Resetting Ferromagnetic Shape Memory Alloy Compound Damper and Working Method Thereof
Name of Applicant: Fuzhou University
Address for Service A.P.T. Patent and Trade Mark Attorneys PO Box 833 Blackwood, S.A. 5051
The invention is described in the following statement:
[0001] 1. Technical Field
[0002] The present invention relates to a self-resetting FSMA (Ferromagnetic
Shape Memory Alloy) compound damper and a working method thereof.
[0003] 2. Description of Related Art
[0004] Existing friction dampers for energy dissipation lack the design of
self-resetting after damping. In addition, friction dampers for energy dissipation that have
a self-resetting property usually utilize auxiliary parts such as pre-tensioned steel strands
or shape memory alloys to conduct self-setting after damping through the counterforce
provided by those auxiliary parts. The State Intellectual Property Office of the PRC issued
with authorization an notice on granting an invention patent, No.CN 106013922B, titled
"Double-phase Friction Damper and Damping Method Thereof', on January 19, 2018.
The invention relates to a double-phase friction damper. The double-phase friction damper
includes a first-phase friction unit and a second-phase friction unit, wherein the first-phase
friction unit and the second-phase friction unit are connected in series by means of
welding; the first-phase friction unit comprises a lower connecting plate, a lower friction
plate, a first-phase main plate, an upper friction plate and an upper connecting plate, and
the upper connecting plate, the first-phase main plate and the lower connecting plate are
connected by virtue of high-strength bolts; the second-phase friction unit comprises angle
steel A, angle steel B, a friction plate, a cushion plate and a second-phase main plate, and
the angle steel A, the angle steel B and the second-phase main plate are connected by
virtue of high-strength bolts. The damper adjusts the breakaway force by means of the
pre-tension of the high-strength bolts. The first-phase friction unit is actuated in the cases of medium and small sized earthquakes. The first-phase friction unit and the second-phase friction unit work at the same time in the case of large earthquakes. When an external force is smaller than the breakaway force of first-phase friction, the first-phase friction unit is not actuated; when the external force is greater than the breakaway force of first-phase friction and smaller than the breakaway force of second-phase friction, the first-phase main plate moves relative to the upper friction plate and the lower friction plate; and when the external force is equal to the breakaway force of second-phase friction, the two-phase main plate moves relative to the friction plate, while the first-phase and second-phase friction units consume energy at the same time. The defect of this technical solution lies in that the damper has no capacity of self resetting after damping, and its energy-dissipative deformation thereof generated during earthquake is retained, which will result in that the damper cannot give a full play to the designed performance when a structure experiences aftershocks or in the next earthquake, and even result in failure.
[0005] The State Intellectual Property Office of the PRC issued with authorization
an notice on granting an invention patent, No.CN 206957318 U, titled "SMA
Self-Resetting Damper" on February 2, 2018. The invention includes a U-shaped
clamping slot and a guide rod which is movable in the U-shaped clamping slot; the
U-shaped clamping slot includes a pair of side plate and bottom plate; a first long round
hole and a second long round hole are respectively provided at two ends of the side plate;
the bottom plate is provided with a first connecting part; the length of the guide bar is
smaller than the depth of the U-shaped clamping slot; a third long round hole and a fourth
long round hole are respectively provided at the two ends of the guide rod; a second
connecting part is provided at one end, away from the bottom plate, of the guide rod; the
first long round hole and the third long round hole are internally provided with a
connecting rod which moves by tension; the second long round hole and the fourth long
round hole are internally provided with a connecting rod which moves by compression; and an SMA wire is winded between the two ends of the connecting rod which moves by tension and between the two ends of the connecting rod which moves by compression.
The defect of the technical solution lies in that the two ends of the damper receive a force
from fixed fittings, resulting in that the damper may be bent during working. In such
circumstance, the performance of the damper can be greatly affected.
[0006] The State Intellectual Property Office of the PRC issued with
authorization an notice on granting an invention patent, No.CN 108331193B, titled
"Square Sleeve Type Self-reset Metal Friction Damper" on January 7, 2020. The
invention includes an outer sleeve and an inner sleeve arranged in the outer sleeve; the
damper is connected with an external structure through connecting rods at the two ends,
where the connecting rod at one end penetrates through the one end of the outer sleeve and
is connected with one end of the inner sleeve, and the connecting rod at the other end is
connected with the other end of the outer sleeve; an offset spring is further arranged
between the other end of the inner sleeve and the other end of the outer sleeve; and a
friction structure is arranged between the outer sleeve and the inner sleeve. The square
sleeve type self-reset metal friction damper of the invention increases the damping force
by forming a slot at the inner sleeve and forming a bolt hole at the outer sleeve, and has a
self-reset function in two states, compressed and tensioned states. The defect of this
technical solution lies in that the weld between the SMA spring and the bottom of the
inner sleeve may break in large earthquakes. In such circumstance, the tension rigidity of
the compression rigidity of the damper will not longer be equal, which can seriously affect
the designed performance of the structure and enhance the possibility of structural damage
during shocking.
[0007] The present invention makes improvement based on the foregoing problems, which means that the technical problem to be solved by the present invention is to provide a self-resetting FSMA compound damper and a working method thereof. The present invention achieves the same mechanical properties when the damper executes forward loading and backward loading. The present invention improves the reliability in friction energy dissipation and self-resetting. Moreover, the present invention simplifies the force-receiving path for the damper, and brings convenience in design, manufacture and installation.
[0008] The technical solution of the present invention is as follows: A
self-resetting FSMA (Ferromagnetic Shape Memory Alloy) compound damper includes an
outer sheet and an inner sheet located at the middle part of the outer sheet, where the outer
sheet and the inner sheet are in a pressed connection with a plurality of pre-tensioned bolts;
an SMA (Shape Memory Alloy) stranded wire is provided between the outer sheet and the
inner sheet; the two ends of the SMA stranded wire are fixed on a top face or a bottom
face of the outer sheet, respectively; and the middle part of the SMA stranded wire is fixed
on the inner sheet to provide a resetting force required by the damper for resetting.
[0009] Further, contact faces of the outer sheet and the inner sheet are arced faces,
which are configured to increase a friction force between the outer sheet and the inner
sheet as an axial relative displacement there-between increases.
[0010] Further, the outer sheet is internally provided with a slot along the length
direction thereof, and the inner sheet is located in the slot.
[0011] Further, the two ends of the SMA stranded wire are fixed on the outer sheet
with stranded wire bolts, and the middle part of the SMA stranded wire is fixed on the
inner sheet also with the stranded wire bolt.
[0012] Further, an outer sheet joint is provided on an outside portion, and the outer
sheet joint is internally provided with an outer sheet joint bolt for fixing the outer sheet
joint on the outer sheet.
[0013] Further, the working method of the self-resetting FSMA compound damper
includes the following steps: (1) the damper performs tension deformation or compression
deformation when the connected parts of the inner sheet and the outer sheet perform
relative motion along a connecting line, such that the inner sheet and the outer sheet
implement relative translational motion to generate friction energy dissipation; (2) during
the relative translational motion of the inner sheet and the outer sheet, since the contact
faces of the outer sheet and the inner sheets are arced faces, the friction force between the
outer sheet and the inner sheet increases, and so does the energy consumption capability of
the damper, when the inner sheet and the outer sheet generates a relative displacement; (3)
at the same time, the SMA stranded wire generates a resilience force due to tension
deformation to provide the resetting force required by the damper, thereby enabling the
damper to self reset.
[0014] Compared with the prior art, the present invention has the following
beneficial effects: The damper is simple in structure and rational in design; the slotted
steel sheet which provides a freedom degree of relative axially translational motion is
compressed with the pre-tensioned bolt, such that the inner sheet and the outer sheet can
perform ideal relative translational motion and therefore generate friction energy
dissipation; at the same time, the SMA (Shape Memory Alloy) stranded wires are installed
at the inner sheet and the top face and bottom face of the outer sheet, such that the
resilience force generated by the stranded wire can be used as the resetting force by the
damper for resetting; moreover, the manufacture cost is low; all parts are in a bolted
connection and do not need processing such as welding; the damper is high in reliability
and more convenient to install and dismantle. The self-resetting FSMA compound damper
is mainly installed at the beam-column nodes or between upper and lower beam layers of
frame-structures in major earthquake zones, and the connecting ends of the inner and outer
sheets are respectively connected with the target parts of the structure that perform relative motions. The present invention has a broad application prospect.
[0015] FIG. 1 is an elevation view of an embodiment of the present invention;
[0016] FIG. 2 is a plane view of an embodiment of the present invention;
[0017] FIG. 3 is a side view of an embodiment of the present invention.
[0018] Reference signs: 1-inner sheet; 2-outer sheet; 3-pre-tensioned bolt;
4-stranded wire bolt; 5-SMA stranded wire; 6-outer sheet joint; 7-outer sheet joint bolt.
[0019] The following describes the present invention in further detail with
reference to the accompanying drawings and specific examples.
[0020] Embodiment: As shown in FIGs. 1-3, a self-resetting FSMA
(Ferromagnetic Shape Memory Alloy) compound damper includes an outer sheet 2 and an
inner sheet 1 located at the middle part of the outer sheet. The outer sheet and the inner
sheet are in a pressed connection with a plurality of pre-tensioned bolts 3. The damper
performs deformation mainly by means of axial tension and compression, presenting
displacement-related features. An SMA (Shape Memory Alloy) stranded wire 5 is
provided between the outer sheet and the inner sheet; the two ends of the SMA stranded
wire are fixed on a top face or a bottom face of the outer sheet, respectively; and the
middle part of the SMA stranded wire is fixed on the inner sheet. The SMA stranded wire
generates a resetting force due to tension deformation to provide a force required by the
damper for resetting, thereby enabling the damper to self-reset.
[0021] The damper performs tension deformation or compression deformation
when the connected parts of the inner sheet and the outer sheet perform relative motion
along a connecting line, such that the inner sheet and the outer sheet implement relative translational motion to generate friction energy dissipation.
[0022] In the present embodiment, the contact faces of the outer sheet and the
inner sheet are arced faces, which are configured to increase a friction force between the
outer sheet and the inner sheet as an axial displacement there-between increases.
[0023] The inner sheet and the outer sheet adopt arced face design, with a feature
of variable friction along with the changes of the relative displacement of the inner sheet
and the outer sheet, which means that as the relative displacement increases, the friction
force grows, and the energy dissipation capability of the damper boosts up. In addition, the
tail shape of the particularly designed arced face end can ensure that the pre-tensioned
bolts do not hit the slotted end of the inner sheet when the inner and outer sheets of the
damper in a structure generate a relatively large relative displacement during large
earthquakes, thereby protecting the damper against impact damage, and also preventing
the impact motion of the damper from generating negative influences on the main body of
the structure. The profile of the contact arced face can be designed upon actual situations.
[0024] In this embodiment, the outer sheet is internally provided with a slot along
the length direction of the outer sheet, and the inner sheet is located in the slot.
[0025] In this embodiment, the two ends of the SMA stranded wire are fixed on
the outer sheet with stranded wire bolts 4; the middle part of the SMA stranded wire is
fixed on the inner sheet also with the stranded wire bolt 4. Several groups of the foregoing
SMA stranded wires can be provided, and the SMA stranded wires in each of the groups
are symmetric up and down; the two ends of the upper SMA stranded wire can be fixed on
the top face of the outer sheet using the stranded wire bolts, while the middle part of the
upper SMA stranded wire can be fixed on the upper surface of the inner sheet by using the
stranded wire bolt; the two ends of the lower SMA stranded wire can be fixed at the
bottom face of the outer sheet by using the stranded wire bolt, while the middle part of the
lower SMA stranded wire can be fixed at the lower surface of the inner sheet by using the stranded wire bolt.
[0026] In this embodiment, to ensure the compactness between the inner sheet and
the outer sheet, an outer sheet joint 6 is provided on an outside portion, and the outer sheet
joint is internally provided with an outer sheet joint bolt 7 for fixing the outer sheet joint
on the outer sheet.
[0027] In this embodiment, the outer sheet and the inner sheet are both made of
steel sheets.
[0028] In this embodiment, the slotted steel sheet which provides a freedom
degree of relative axially translational motion is compressed with the pre-tensioned bolt,
such that the inner sheet and the outer sheet can perform ideal relative translational motion
and therefore generate friction energy dissipation; at the same time, the SMA (Shape
Memory Alloy) stranded wires are installed at the inner sheet and at the top face and
bottom face of the outer sheet, such that the resilience force generated by the stranded wire
can be used as the resetting force by the damper for resetting. The materials used therein
include steel and a SMA material, and the part made of steel is conveniently manufactured
and low in cost; moreover, the SMA material has unique super-elasticity and good
mechanical properties, and is superior to common metals in the capability of recovery
from deformation. In addition, all parts are in a bolted connection and do not need
processing such as welding, so that the damper is high in reliability and more convenient
to install and dismantle.
[0029] In addition, it is worth noting that, the connection method at the two ends
of the damper excludes a connecting rod, thereby effectively avoiding damper failure
caused by bending of the connecting rod; the damper has symmetric mechanical properties
in the case of tension deformation, suitable for reciprocating movement of a structure
during the earthquake; the damper decouples the compounded self-resetting property and
the friction energy-dissipation property through the friction between the SMA stranded wire and the steel sheet, thereby ensuring convenient design, a clear force-receiving path and reliable mechanical properties; the damper has a variable friction feature; the present invention can avoid impact damage of the damper itself and prevent bad influences thereof on the main body of the structure; moreover, the damper adopts a full-assembly connection method, bringing great convenience in installation and dismantling.
[0030] Unless otherwise stated, if any technical solution disclosed by the present
invention involves a numerical range, the disclosed numerical range is a preferred
numerical range. Any skilled in the art shall understand that, the preferred numerical range
merely includes numerical values with obvious technical effects or representative
numerical values among various implementable numerical values. Since there are too
much numerical values which are cannot be exhausted, the present invention discloses
some of the numerical values to describe the technical solution of the present invention
with examples. Moreover, the foregoing listed numerical values shall not be construed
limiting to the protective scope of the present invention.
[0031] If terms such as "first", "second" and the like are used herein to define
parts and components, a skilled in the art shall understand that the terms "first" and
"second are merely used to distinguish the parts and components in the text. Unless
otherwise state, those terms do not have special meanings.
[0032] Meanwhile, if the present invention discloses or involves parts and
components or structures in mutually fixed connection, unless otherwise stated, the fixed
connection can be understood as detachable fixed connection (for example bolted or
screwed connection), or as non-detachable fixed connection (such as riveting and
welding). Of course, the mutually fixed connection can also be replaced by an integrated
fixed connection (for example integral molding by casting) (except that the integral
molding process apparently does not work).
[0033] In addition, for a term which represent a position relation or a shape in any technical solution disclosed by the present invention, its meanings includes similar, analogue or approaching states or shapes, unless otherwise stated.
[0034] Any part provided by the present invention can be assembled by a plurality
of individual constituent parts, or can be an individual part manufactured by a integral
molding process.
[0035] Finally, it should be noted that, the above embodiments are merely used to
describe the technical solution of the present invention, and not to limit the present
invention. Even if preferred embodiments are used to describe the present invention in
further detail, an ordinarily skilled in the art shall understand that, the specific
embodiments of the present invention can still be modified or some technical
characteristics can still be equivalently substituted. All modifications or equivalent
institutions made within the spirit of the technical solution of the present invention shall
fall within the protective scope of the technical solution Claimed by the present invention.
Claims (6)
1. A self-resetting FSMA (Ferromagnetic Shape Memory Alloy) compound damper,
characterized by comprising an outer sheet and an inner sheet located at the middle part of
the outer sheet, wherein the outer sheet and the inner sheet are in a pressed connection
with a plurality of pre-tensioned bolts; an SMA (Shape Memory Alloy) stranded wire is
provided between the outer sheet and the inner sheet; the two ends of the SMA stranded
wire are fixed on a top face or a bottom face of the outer sheet, respectively; and the
middle part of the SMA stranded wire is fixed on the inner sheet to provide a resetting
force required by the damper for resetting.
2. The self-resetting FSMA compound damper according to Claim 1, wherein contact
faces of the outer sheet and the inner sheet are arced faces, which are configured to
increase a friction force between the outer sheet and the inner sheet as an axial relative
displacement there-between increases.
3. The self-resetting FSMA compound damper according to Claim 1, wherein the outer
sheet is internally provided with a slot along the length direction thereof, and the inner
sheet is located in the slot.
4. The self-resetting FSMA compound damper according to Claim 1, wherein the two
ends of the SMA stranded wire are fixed on the outer sheet with stranded wire bolts, and
the middle part of the SMA stranded wire is fixed on the inner sheet also with the stranded
wire bolt.
5. The self-resetting FSMA compound damper according to Claim 1, wherein an outer
sheet joint is provided on an outside portion, and the outer sheet joint is internally
provided with an outer sheet joint bolt for fixing the outer sheet joint on the outer sheet.
6. A working method of the self-resetting FSMA compound damper according to
Claim 1, characterized by comprising the following steps: (1) the damper performs tension
deformation or compression deformation when the connected parts of the inner sheet and the outer sheet perform relative motion along a connecting line, such that the inner sheet and the outer sheet perform relative translational motion to generate friction energy dissipation; (2) during the relative translational motion of the inner sheet and the outer sheet, since the contact faces of the outer sheet and the inner sheet are arced faces, the friction force between the outer sheet and the inner sheet increases, and so does the energy dissipation capability of the damper, when the inner sheet and the outer sheet generates a relative displacement; (3) at the same time, the SMA stranded wire generates a resilience force due to tension deformation to provide the resetting force required by the damper, thereby enabling the damper to self reset.
2020102373 1/1
FIG. 1
FIG. 2
FIG. 3
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010525923.4A CN111550112A (en) | 2020-06-10 | 2020-06-10 | Self-resetting FSMA composite damper and working method thereof |
| CN202010525923.4 | 2020-06-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2020102373A4 true AU2020102373A4 (en) | 2020-11-05 |
Family
ID=72002199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2020102373A Ceased AU2020102373A4 (en) | 2020-06-10 | 2020-09-22 | Self-Resetting Ferromagnetic Shape Memory Alloy Compound Damper and Working Method Thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111550112A (en) |
| AU (1) | AU2020102373A4 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982703A (en) * | 2021-01-27 | 2021-06-18 | 河南理工大学 | Constant-force spring self-resetting damper |
| CN113250338A (en) * | 2021-05-25 | 2021-08-13 | 北京科技大学 | Damper capable of adjusting length of shape memory alloy wire in grading mode and manufacturing method |
| CN114411963A (en) * | 2022-03-10 | 2022-04-29 | 河北建筑工程学院 | Self-resetting energy consumption device and steel structure beam column connecting node |
| CN115217230A (en) * | 2022-06-28 | 2022-10-21 | 华能澜沧江水电股份有限公司 | Shape memory alloy damper |
| CN115419185A (en) * | 2022-09-23 | 2022-12-02 | 北京固力同创工程科技有限公司 | Real-time monitoring intelligent seismic mitigation and isolation system and control method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653394A (en) * | 2021-08-25 | 2021-11-16 | 北京工业大学 | Self-resetting SMA stranded wire composite magnetorheological damping support |
| CN113756465A (en) * | 2021-09-26 | 2021-12-07 | 四川大学 | Variable-rigidity friction damper |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101145881B1 (en) * | 2011-10-31 | 2012-05-15 | (주)대우건설 | Stud-type hybrid damper having steel damper and friction damper |
| CN106121336B (en) * | 2016-06-27 | 2018-01-16 | 北京建筑大学 | A kind of shape memory alloy twisted wire-ring spring pin-connected panel re-centring damper |
| CN109024960B (en) * | 2018-07-25 | 2020-07-07 | 长安大学 | SMA is from restoring to throne friction damper |
| CN109404477A (en) * | 2018-11-21 | 2019-03-01 | 沈阳建筑大学 | A kind of SMA spring-STF viscous damper |
| CN212642284U (en) * | 2020-06-10 | 2021-03-02 | 福州大学 | Self-resetting FSMA composite damper |
-
2020
- 2020-06-10 CN CN202010525923.4A patent/CN111550112A/en active Pending
- 2020-09-22 AU AU2020102373A patent/AU2020102373A4/en not_active Ceased
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982703A (en) * | 2021-01-27 | 2021-06-18 | 河南理工大学 | Constant-force spring self-resetting damper |
| CN112982703B (en) * | 2021-01-27 | 2022-07-29 | 河南理工大学 | Constant force spring is from restoring to throne attenuator |
| CN113250338A (en) * | 2021-05-25 | 2021-08-13 | 北京科技大学 | Damper capable of adjusting length of shape memory alloy wire in grading mode and manufacturing method |
| CN113250338B (en) * | 2021-05-25 | 2022-04-26 | 北京科技大学 | Damper capable of adjusting length of shape memory alloy wire in grading mode and manufacturing method |
| CN114411963A (en) * | 2022-03-10 | 2022-04-29 | 河北建筑工程学院 | Self-resetting energy consumption device and steel structure beam column connecting node |
| CN115217230A (en) * | 2022-06-28 | 2022-10-21 | 华能澜沧江水电股份有限公司 | Shape memory alloy damper |
| CN115217230B (en) * | 2022-06-28 | 2023-08-08 | 华能澜沧江水电股份有限公司 | Shape memory alloy damper |
| CN115419185A (en) * | 2022-09-23 | 2022-12-02 | 北京固力同创工程科技有限公司 | Real-time monitoring intelligent seismic mitigation and isolation system and control method |
| CN115419185B (en) * | 2022-09-23 | 2024-02-02 | 北京固力同创工程科技有限公司 | Real-time monitoring intelligent seismic reduction and isolation system and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111550112A (en) | 2020-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2020102373A4 (en) | Self-Resetting Ferromagnetic Shape Memory Alloy Compound Damper and Working Method Thereof | |
| CN212642284U (en) | Self-resetting FSMA composite damper | |
| WO2018060784A1 (en) | Self-centering steel column- foundation connection, equipped with super elastic nitinol shape memory alloy | |
| CA2754675C (en) | Metal joint, damping structure, and architectural construction | |
| CN100410464C (en) | Mixed type marmem damper | |
| Dolce et al. | SMA recentering devices for seismic isolation of civil structures | |
| JP2020153106A (en) | Spring type seismic damper | |
| JP6694195B1 (en) | Spring type damping damper | |
| CN108331193B (en) | Square sleeve type self-resetting metal friction damper | |
| JP2009052097A (en) | Damping member | |
| EP3212861B1 (en) | Dissipative connection with optimized stiffness and strength for joining construction elements | |
| CN109797890B (en) | Intelligent shear wall system and energy dissipation damper model selection method | |
| CN110173059B (en) | SMA-wood friction damper with self-resetting function | |
| KR102019718B1 (en) | Automatic Restoration and Self-Healing Damper System Utilizing Smart Material | |
| KR101406485B1 (en) | Coupling structure and method for beam to column connection | |
| CN110173146B (en) | Self-resetting viscous composite damper | |
| CN202627247U (en) | Friction damper made of tandem type hyperelastic shape memory alloy | |
| CN218028292U (en) | Double-order friction damper | |
| CN109403495B (en) | Multipurpose assembled damper | |
| CN103088932B (en) | Anti-buckling friction support | |
| JP2017053364A (en) | Stopper and damping device | |
| CN215630795U (en) | Composite metal damper for cantilever structure | |
| CN108951920A (en) | More buffering energy-consumption formulas reset damper | |
| JP2000192686A (en) | Seismic base isolator | |
| CN210598348U (en) | Self-resetting viscous composite damper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |