CN108708472A - A kind of box SMA- piezoelectricity change friction composite damper - Google Patents
A kind of box SMA- piezoelectricity change friction composite damper Download PDFInfo
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- CN108708472A CN108708472A CN201810982707.5A CN201810982707A CN108708472A CN 108708472 A CN108708472 A CN 108708472A CN 201810982707 A CN201810982707 A CN 201810982707A CN 108708472 A CN108708472 A CN 108708472A
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- 239000002131 composite material Substances 0.000 title claims abstract description 16
- 230000008859 change Effects 0.000 title description 7
- 239000000919 ceramic Substances 0.000 claims description 22
- 230000006835 compression Effects 0.000 claims description 18
- 238000007906 compression Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 9
- 229910001566 austenite Inorganic materials 0.000 claims description 4
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 3
- 238000013016 damping Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 238000005265 energy consumption Methods 0.000 description 6
- 230000006399 behavior Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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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
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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
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- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a kind of box SMA- piezoelectricity to become friction composite damper, in outer case right baffle-plate is disposed with by left-to-right, left roof, sliding block, right top plate and right shell body, one end of first strut and tie is located at outside left side wall panel, the other end of first strut and tie sequentially passes through left side wall panel, right baffle-plate, left roof, left apical ring, it is fixedly connected with right top plate after sliding block and right apical ring, wherein, first strut and tie and left roof, left apical ring and right apical ring are fixedly connected, sliding contact between first strut and tie and left side wall panel and right baffle-plate, the end of second strut and tie is connected with left side wall panel；Between left roof and left side wall panel by several one SMA be connected, between right baffle-plate and right shell body by several two SMA be connected, between right top plate and right side wall panel by several three SMA be connected, the damper has highly energy-consuming and runback bit function, and can be used as semi-active damper device.
Description
Technical field
The invention belongs to civil engineering structures to vibrate half control field, and it is compound to be related to a kind of box SMA- piezoelectricity change friction
Damper.
Background technology
Piezoelectric material has piezoelectric effect, i.e., has the ability for generating potential when piezoelectric material is by mechanically deform, referred to as
Direct piezoelectric effect can make various sensors using the effect；When applying voltage to it, piezoelectric material is deformed, referred to as
Inverse piezoelectric effect can make piezoelectric friction damper, piezoelectric ceramic actuator is used for using the inverse piezoelectric effect of piezoelectric material
The contact (normal pressure) between friction plate is adjusted, to significantly improve the passive energy dissipation ability of damper.
However in the design process of piezoelectric friction damper, but in order to make the more preferably low quilt of the deformation of piezoelectric ceramic actuator
Constraint generally requires to apply a larger initial contact normal pressure, so that initial frictional is excessive, damper starts tired
Difficulty, energy dissipation capacity are lower, while the very little that damping-force adjustable becomes, and usually will appear residual displacement.
Marmem is a kind of novel intellectual material, because of its unique shape memory, super-elasticity, high-damping and electricity
Characteristic is hindered, is widely applied in the fields such as biomedical, mechano-electronic and aerospace.In field of civil engineering, SMA is utilized
Super-elasticity and its hysteretic energy characteristic can develop the passive energy-consumption damper suitable for engineering structure damping, however only
It is but difficult to develop the damper applied to Structural Vibration Semi-active Control Technology using its super-elasticity and Hysteresis Behavior.
Invention content
It is an object of the invention to overcome the above-mentioned prior art, it is multiple to provide a kind of box SMA- piezoelectricity change friction
Mould assembly damper, which has highly energy-consuming and runback bit function, and can be used as semi-active damper device.
In order to achieve the above objectives, box SMA- piezoelectricity of the present invention become friction composite damper include outer case,
First strut and tie, the second strut and tie and the sliding block with piezoelectric ceramic actuator；
Outer case is made of left side wall panel, right side wall panel, return panels, rear side wall panel and lower friction bottom plate, wherein outer container
In vivo right baffle-plate, left roof, sliding block, right top plate and right shell body, the left side of sliding block and right side difference are disposed with by left-to-right
It is provided with left apical ring and right apical ring, one end of the first strut and tie is located at outside left side wall panel, and the other end of the first strut and tie is worn successively
It is fixedly connected with right top plate after crossing left side wall panel, right baffle-plate, left roof, left apical ring, sliding block and right apical ring, wherein the first tension and compression
Bar is fixedly connected with left roof, left apical ring and right apical ring, sliding contact between the first strut and tie and left side wall panel and right baffle-plate, the
The end of two strut and ties is connected with left side wall panel；
Between left roof and left side wall panel by several one SMA be connected, if between right baffle-plate and right shell body by
Dry 2nd SMA be connected, between right top plate and right side wall panel by several three SMA be connected, under original state, left top
Plate is in contact with right baffle-plate, and right top plate is in contact with right shell body.
The top open part of outer case is provided with friction cover board, wherein is provided on the cover board that above rubs for adjusting
The hexagon socket head cap screw of friction cover board precompression.
The first horizontal concrete chute and the second horizontal concrete chute, the end of right baffle-plate are both provided in return panels and in rear side wall panel
In first horizontal concrete chute, the end of right shell body is located in second horizontal concrete chute.
Further include external power supply, several through-holes up and down are offered on sliding block, wherein is both provided with pressure in each through-hole
The upper and lower ends of electroceramics driver, piezoelectric ceramic actuator are both provided with friction shim, and piezoelectric ceramic actuator upper end is rubbed
Scrubbing pad piece is in contact with upper friction cover board, and the friction shim of piezoelectric ceramic actuator lower end is in contact with lower friction bottom plate, piezoelectricity
It is connected by conducting wire between ceramic driver and external power supply.
The first wire through-hole is offered on the side wall of through-hole, and the second wire through-hole, conducting wire are offered on the side wall of outer case
Across the first wire through-hole and the second wire through-hole.
Sliding block and the distance between left roof are identical as the distance between right top plate as sliding block.
The first bolt fastening hole and the first tension and compression rod through-hole for being passed through for the first strut and tie are provided in left side wall panel,
The first SMA through-holes, the second bolt fastening hole and the second strut and tie for being passed through for the first strut and tie are provided on right baffle-plate
Through-hole is provided with the first bolt hole, the 2nd SMA through-holes and the third tension and compression for being passed through for the first strut and tie on left roof
Rod through-hole；The 3rd SMA through-holes and the 4th tension and compression rod through-hole for being passed through for the first strut and tie are provided on sliding block；Right top plate
On be provided with the second bolt hole and the 4th SMA through-holes；Be provided in right shell body third bolt fastening hole and the 5th SMA it is logical
Hole；The 4th bolt fastening hole is provided in right side wall panel；
First SMA left end pass through the first bolt fastening hole after be fixed in left side wall panel by first through hole bolt,
First SMA right ends are fixed on by the first fixture on left roof after passing through the first SMA through-holes and the 2nd SMA through-holes；
2nd SMA left ends are fixed after passing through the first bolt hole and the second bolt fastening hole by the second through-hole bolt
In on right baffle-plate, the 2nd SMA right ends pass through logical after the 3rd SMA through-holes, the second bolt hole and third bolt fastening hole
Third through-hole bolt is crossed to be fixed in right shell body；
3rd SMA left ends pass through is fixed on the right side after the 5th SMA through-holes and the 4th SMA through-holes by the second fixture
On top plate, the 3rd SMA right end pass through the 4th bolt fastening hole after be fixed in right side wall panel by fourth hole bolt.
First through hole bolt, the second through-hole bolt, third through-hole bolt and fourth hole bolt are in axis opens up
The nut bolt in heart hole.
First SMA, the 2nd SMA and the 3rd SMA for material identical, diameter identical austenite NiTi SMA.
The invention has the advantages that：
Box SMA- piezoelectricity of the present invention become friction composite damper again specific works when, when the first strut and tie by
When pressure, the first strut and tie drives left roof, right top plate and sliding block to move right jointly, while right top plate pushes right shell body along second
Horizontal concrete chute moves right, so that sliding block generates external controllable frictional resistance, while the first SMA and the 2nd SMA
It stretches, to realize energy consumption, principle is substantially similar when the first strut and tie tension, when the second strut and tie is pressurized, the second strut and tie band
Dynamic outer case, outer case push right baffle-plate, right shell body, right top plate and sliding block to move downward, can so that sliding block generation is external
Control frictional resistance, at the same the 2nd SMA and the 3rd SMA stretch, consumed energy with realizing, principle basic class when the second strut and tie tension
Seemingly.When the first strut and tie and the second strut and tie tension simultaneously, the first strut and tie drive left roof, right top plate and sliding block jointly to
Right movement, left roof push right baffle-plate to move right, and the second strut and tie drives outer case that right shell body is pushed to move downward, to make
Sliding block generates external controllable friction resistance, wherein the first SMA, the 2nd SMA and the 3rd SMA stretch simultaneously, to realize
When energy consumption, the first strut and tie and the second strut and tie are pressurized, principle is substantially similar.In addition, after external force is eliminated, pass through first
SMA, the 2nd SMA and the 3rd SMA resets realize the reset of entire damper, it is simple in structure, it is easy to operate, there is height
The characteristics of energy consumption and reset.
Description of the drawings
Fig. 1 is the flat sectional drawing of the present invention；
Fig. 2 is the profilograph of the present invention；
Fig. 3 is the side elevational view for hurrying to rice busy；
Fig. 4 a are the structural schematic diagram of left side wall panel 101 in the present invention；
Fig. 4 b are the structural schematic diagram of right side wall panel 102 in the present invention；
Fig. 5 a are the structural schematic diagram of right baffle-plate 6；
Fig. 5 b are the structural schematic diagram of right shell body 7 in the present invention；
Fig. 6 a are the structural schematic diagram of left roof 8 in the present invention；
Fig. 6 b are the structural schematic diagram of right top plate 9 in the present invention；
Fig. 7 is the structural schematic diagram of return panels 103 in the present invention；
Fig. 8 is the side view of sliding block 2 in the present invention；
Fig. 9 is the structural schematic diagram of first through hole bolt 15 in the present invention；
Figure 10 is the annexation figure of first through hole bolt 15 and the first SMA silks 12 in the present invention.
Wherein, 1 be outer case, 2 be sliding block, 3 be piezoelectric ceramic actuator, 4 be the first strut and tie, 5 be the second strut and tie,
6 be right baffle-plate, 7 be right shell body, 8 be left roof, 9 be right top plate, 10 be left apical ring, 11 be right apical ring, 12 be the first SMA,
13 be the 2nd SMA, 14 be the 3rd SMA, 15 be first through hole bolt, 16 be through-hole, 17 be the first fixture, 18 be first to lead
Line three-way hole, 19 be the second wire through-hole, 20 be the first horizontal concrete chute, 21 be the second horizontal concrete chute, 22 be hexagon socket head cap screw, 23 be
First tension and compression rod through-hole, 24 be the first bolt fastening hole, 25 be the second tension and compression rod through-hole, 26 be the second bolt fastening hole, 27 be
First SMA through-holes, 28 be third tension and compression rod through-hole, 29 be the first bolt hole, 30 be the 2nd SMA through-holes, 31 be the 4th
Tension and compression rod through-hole, 32 be the 3rd SMA through-holes, 33 be the second bolt hole, 34 be the 4th SMA through-holes, 35 be third bolt
Fastener hole, 36 be the 5th SMA through-holes, 37 be the 4th bolt fastening hole, 101 be left side wall panel, 102 be right side wall panel, 103 be
Return panels, 104 be rear side wall panel, 105 be lower friction bottom plate, 106 be upper friction cover board, 107 be friction shim.
Specific implementation mode
The present invention is described in further detail below in conjunction with the accompanying drawings：
As shown in Figures 1 to 10, it includes outer case that box SMA- piezoelectricity of the present invention, which becomes friction composite damper,
1, the first strut and tie 4, the second strut and tie 5 and the sliding block 2 with piezoelectric ceramic actuator 3；Outer case 1 is by left side wall panel 101, the right side
Sidewall paneling 102, return panels 103, rear side wall panel 104 and lower friction bottom plate 105 are constituted, wherein in outer case 1 by it is left-to-right according to
Secondary to be provided with right baffle-plate 6, left roof 8, sliding block 2, right top plate 9 and right shell body 7, the left side and right side of sliding block 2 are respectively arranged with a left side
One end of apical ring 10 and right apical ring 11, the first strut and tie 4 is located at outside left side wall panel 101, and the other end of the first strut and tie 4 is worn successively
It is fixedly connected with right top plate 9 after crossing left side wall panel 101, right baffle-plate 6, left roof 8, left apical ring 10, sliding block 2 and right apical ring 11,
In, the first strut and tie 4 is fixedly connected with left roof 8, left apical ring 10 and right apical ring 11, the first strut and tie 4 and left side wall panel 101 and
The end of sliding contact between right baffle-plate 6, the second strut and tie 5 is connected with left side wall panel 101；Left roof 8 and left side wall panel 101
Between be connected by several first SMA silks 12, be connected by several 2nd SMA silks 13 between right baffle-plate 6 and right shell body 7,
It is connected by several 3rd SMA silks 14 between right top plate 9 and right side wall panel 102, under original state, left roof 8 and right baffle-plate 6
It being in contact, right top plate 9 is in contact with right shell body 7, wherein the top open part of outer case 1 is provided with friction cover board 106,
In, the hexagon socket head cap screw 22 for adjusting upper friction 106 precompression of cover board is provided on upper friction cover board 106；Sliding block 2 and Zuo Ding
The distance between plate 8 is identical as the distance between right top plate 9 as sliding block 2.
The first horizontal concrete chute 20 and the second horizontal concrete chute 21 are both provided in return panels 103 and in rear side wall panel 104, it is left
The end of baffle 6 is located in first horizontal concrete chute 20, and the end of right shell body 7 is located in second horizontal concrete chute 21.
The invention also includes external power supply, several through-holes 16 up and down are offered on sliding block 2, wherein each through-hole 16
It is inside both provided with piezoelectric ceramic actuator 3, the upper and lower ends of piezoelectric ceramic actuator 3 are both provided with friction shim 107, piezoelectricity pottery
The friction shim 107 of 3 upper end of porcelain driver is in contact with upper friction cover board 106, the friction shim of 3 lower end of piezoelectric ceramic actuator
107 are in contact with lower friction bottom plate 105, are connected by conducting wire between piezoelectric ceramic actuator 3 and external power supply, wherein logical
The first wire through-hole 18 is offered on the side wall in hole 16, the second wire through-hole 19 is offered on the side wall of outer case 1, conducting wire passes through
First wire through-hole 18 and the second wire through-hole 19.
The first bolt fastening hole 24 and the first tension and compression for being passed through for the first strut and tie 4 are provided in left side wall panel 101
Rod through-hole 23 is provided with the first SMA through-holes 27, the second bolt fastening hole 26 on right baffle-plate 6 and for being worn for the first strut and tie 4
The the second tension and compression rod through-hole 25 crossed is provided with the first bolt hole 29, the 2nd SMA through-holes 30 on left roof 8 and for for the
The third tension and compression rod through-hole 28 that one strut and tie 4 passes through；The 3rd SMA through-holes 32 are provided on sliding block 2 and for supplying the first tension and compression
The 4th tension and compression rod through-hole 31 that bar 4 passes through；The second bolt hole 33 and the 4th SMA through-holes 34 are provided on right top plate 9；Right gear
Third bolt fastening hole 35 and the 5th SMA through-holes 36 are provided on plate 7；The fastening of the 4th bolt is provided in right side wall panel 102
Hole 37；The left end of first SMA silks 12 is fixed on left side wall panel after the first bolt fastening hole 24 by first through hole bolt 15
On 101, the right end of the first SMA silks 12 is solid by the first fixture 17 after the first SMA through-holes 27 and the 2nd SMA through-holes 30
Due on left roof 8；The left end of 2nd SMA silks 13 passes through second after passing through the first bolt hole 29 and the second bolt fastening hole 26
Through-hole bolt is fixed on right baffle-plate 6, the right ends of the 2nd SMA silks 13 pass through the 3rd SMA through-holes 32, the second bolt hole 33 and
It is fixed in right shell body 7 by third through-hole bolt after third bolt fastening hole 35；The left end of 3rd SMA silks 14 passes through the 5th
It is fixed on right top plate 9 by the second fixture after SMA through-holes 36 and the 4th SMA through-holes 34, the right end of the 3rd SMA silks 14 is worn
It is fixed in right side wall panel 102 by fourth hole bolt after crossing the 4th bolt fastening hole 37.
First through hole bolt 15, the second through-hole bolt, third through-hole bolt and fourth hole bolt are to be opened up along axis
The nut bolt of centre bore；First SMA silks 12, the 2nd SMA silks 13 and the 3rd SMA silks 14 identical, identical Austria of diameter for material
Family name's body NiTi SMA.
When specifically used, damper can be connected to building structure by chevron shaped support, cross hang or bearing diagonal
In, or half active cable control system is connected to form with drag-line in some drag-line damping devices, it can also be in some shock insulations
Using forming composite shock insulation intelligence bearing in bearing.The preload journey of through-hole bolt is adjusted according to actual requirement when damper is assembled
Degree, to which the initial strain of the first SMA silks 12, the 2nd SMA silks 13 and the 3rd SMA silks 14 is adjusted to optimum value.In damper
Use during, when the first strut and tie 4 is pressurized, the first strut and tie 4 drive left roof 8, right top plate 9 and sliding block 2 jointly to
Right movement, at the same right top plate 9 push right shell body 7 moved right along the second horizontal concrete chute 21 so that sliding block 2 generate outside can
Frictional resistance is controlled, the first SMA silks 12 and the 2nd SMA silks 13 stretch, and the 3rd SMA silks 14 are replied；When the second strut and tie 5 is pressurized,
Second strut and tie 5 drives outer case 1, outer case 1 to push right baffle-plate 6, and right baffle-plate 6 drives right shell body 7, and then drives right top plate 9
And sliding block 2 moves downward, so that sliding block 2 generates external controllable friction resistance, the 2nd SMA silks 13 and the 3rd SMA silks 14 are drawn
It stretches；
When the first 4 tension of strut and tie, the first strut and tie 4 drives left roof 8, right top plate 9 and sliding block 2 to transport to the left jointly
It is dynamic, while left roof 8 pushes right baffle-plate 6 to be moved downward along the first horizontal concrete chute 20, controllably rubs so that sliding block 2 generates outside
Resistance is wiped, the 3rd SMA silks 14 and the 2nd SMA silks 13 stretch, and the first SMA silks 12 are replied；When the second 5 tension of strut and tie, second draws
Compression bar 5 drives outer case 1, outer case 1 to push right shell body 7, and right shell body 7 drives right baffle-plate 6, and then drives left roof 8 and sliding block 2
It moves right, so that sliding block 2 generates external controllable friction resistance, the 2nd SMA silks 13 and the first SMA silks 12 stretch.
When the first strut and tie 4 and the second strut and tie 5 tension simultaneously, the first strut and tie 4 drive left roof 8, right top plate 9 and
Sliding block 2 moves right jointly, and left roof 8 pushes right baffle-plate 6 to move right, and the second strut and tie 5 drives outer case 1, outer case 1 to push away
Dynamic right shell body 7 moves downward so that sliding block 2 generates external controllable friction resistance, the first SMA silks 12, the 2nd SMA silks 13 and
3rd SMA silks 14 stretch simultaneously；When first strut and tie 4 and the second strut and tie 5 are pressurized simultaneously, the first strut and tie 4 drives left roof
8, right top plate 9 and sliding block 2 move downward jointly, and right top plate 9 pushes right shell body 7 to move downward, and the second strut and tie 5 drives outer case
1, outer case 1 pushes right baffle-plate 6 to move right so that sliding block 2 generates external controllable friction resistance, the first SMA silks 12 and
2nd SMA silks 13 stretch, and the 3rd SMA silks 14 are replied.
When energized, change the output of piezoelectric ceramic actuator 3 by changing external voltage, to change friction shim
Contact normal pressure between 107 and lower friction bottom plate 105 and upper friction cover board 106, and then change friction damping force；In practical behaviour
When making, semi-active control algorithm is embedded in by microcontroller, the active control to friction damping force may be implemented, add austenite
SMA energy consumption, that is, reset functions so that entire damper can be used as a semi-active damper device.
When power is off, 3 cisco unity malfunction of piezoelectric ceramic actuator, friction damping force are initial friction damping force, can not
Active control, and each SMA in damper can normally be consumed energy and reset, entire damper can be compound as one
Passive energy-consumption damper uses.
Present invention synthesis uses two kinds of intellectual materials of piezoelectric ceramics and marmem, and damping effect is more preferable, and performance is more
Add stabilization, it is more adaptable, field of vibration control can be preferably applied for.By the way that the first strut and tie 4 and second is arranged
Strut and tie 5 so that the present invention can readily realize the connection with external component device, and easy for installation, the scope of application is wider, has
Effect solves the fastening problems of austenite SMA.
First through hole bolt 15, the second through-hole bolt, third through-hole bolt and fourth hole bolt are to be opened up along axis
The nut bolt of centre bore, corresponding SMA is wrapped in after the centre bore on screw thread, in practical operation, passes through tune
The position for saving each SMA winding, to adjust each SMA of preload degree.
Above-described specific implementation example is only to illustrate to the formula example of this patent, not to the range of this patent into
Row limits, and under the premise of not departing from this patent design spirit, those of ordinary skill in the art make the art of this patent scheme
Various modifications and improvement, each fall within patent claims number determination protection domain in.
Claims (9)
1. a kind of box SMA- piezoelectricity becomes friction composite damper, which is characterized in that including outer case (1), the first strut and tie
(4), the second strut and tie (5) and the sliding block (2) with piezoelectric ceramic actuator (3)；
Outer case (1) by left side wall panel (101), right side wall panel (102), return panels (103), rear side wall panel (104) and under rub
It wipes bottom plate (105) to constitute, wherein be disposed with right baffle-plate (6), left roof (8), sliding block by left-to-right in outer case (1)
(2), right top plate (9) and right shell body (7), the left side and right side of sliding block (2) are respectively arranged with left apical ring (10) and right apical ring (11),
One end of first strut and tie (4) is located at left side wall panel (101) outside, and the other end of the first strut and tie (4) sequentially passes through left side wall panel
(101), right baffle-plate (6), left roof (8), left apical ring (10), sliding block (2) and right apical ring (11) are fixed with right top plate (9) connect afterwards
It connects, wherein the first strut and tie (4) is fixedly connected with left roof (8), left apical ring (10) and right apical ring (11), the first strut and tie (4)
The end of the sliding contact between left side wall panel (101) and right baffle-plate (6), the second strut and tie (5) is connected with left side wall panel (101)
It connects；
It is connected by several one SMA (12) between left roof (8) and left side wall panel (101), right baffle-plate (6) and right shell body
(7) it is connected by several two SMA (13) between, passes through several thirds between right top plate (9) and right side wall panel (102)
SMA (14) are connected, and under original state, left roof (8) is in contact with right baffle-plate (6), right top plate (9) and right shell body (7) phase
Contact.
2. box SMA- piezoelectricity according to claim 1 becomes friction composite damper, which is characterized in that outer case (1)
Top open part be provided with friction cover board (106), wherein above rub and be provided with for adjusting upper friction on cover board (106)
The hexagon socket head cap screw (22) of cover board (106) precompression.
3. box SMA- piezoelectricity according to claim 1 becomes friction composite damper, which is characterized in that return panels
(103) the first horizontal concrete chute (20) and the second horizontal concrete chute (21), right baffle-plate (6) are both provided on and in rear side wall panel (104)
End be located in first horizontal concrete chute (20), it is interior that the end of right shell body (7) is located at second horizontal concrete chute (21).
4. box SMA- piezoelectricity according to claim 2 becomes friction composite damper, which is characterized in that further include outside
Power supply offers several through-holes (16) up and down on sliding block (2), wherein is both provided with piezoelectric ceramics in each through-hole (16)
The upper and lower ends of driver (3), piezoelectric ceramic actuator (3) are both provided with friction shim (107), piezoelectric ceramic actuator (3)
The friction shim (107) of upper end is in contact with upper friction cover board (106), the friction shim of piezoelectric ceramic actuator (3) lower end
(107) it is in contact with lower friction bottom plate (105), piezoelectric ceramic actuator (3) is connected between external power supply by conducting wire.
5. box SMA- piezoelectricity according to claim 4 becomes friction composite damper, which is characterized in that through-hole (16)
The first wire through-hole (18) is offered on side wall, the second wire through-hole (19) is offered on the side wall of outer case (1), conducting wire passes through
First wire through-hole (18) and the second wire through-hole (19).
6. box SMA- piezoelectricity according to claim 1 becomes friction composite damper, which is characterized in that sliding block (2) with
The distance between left roof (8) is identical as the distance between right top plate (9) as sliding block (2).
7. box SMA- piezoelectricity according to claim 1 becomes friction composite damper, which is characterized in that left side wall panel
(101) the first bolt fastening hole (24) and the first tension and compression rod through-hole (23) for being passed through for the first strut and tie (4) are provided on,
The first SMA through-holes (27), the second bolt fastening hole (26) are provided on right baffle-plate (6) and for being worn for the first strut and tie (4)
The the second tension and compression rod through-hole (25) crossed, be provided on left roof (8) the first bolt hole (29), the 2nd SMA through-holes (30) and
Third tension and compression rod through-hole (28) for being passed through for the first strut and tie (4)；The 3rd SMA through-holes (32) are provided on sliding block (2)
And the 4th tension and compression rod through-hole (31) for being passed through for the first strut and tie (4)；It is provided with the second bolt hole on right top plate (9)
(33) and the 4th SMA through-holes (34)；Third bolt fastening hole (35) and the 5th SMA through-holes are provided in right shell body (7)
(36)；The 4th bolt fastening hole (37) is provided in right side wall panel (102)；
The left end of first SMA (12) is fixed on left side after the first bolt fastening hole (24) by first through hole bolt (15)
On siding (101), the right end of the first SMA (12) passes through after the first SMA through-holes (27) and the 2nd SMA through-holes (30)
First fixture (17) is fixed on left roof (8)；
The left end of 2nd SMA (13) passes through the second through-hole after passing through the first bolt hole (29) and the second bolt fastening hole (26)
Bolt is fixed on right baffle-plate (6), and the right end of the 2nd SMA (13) passes through the 3rd SMA through-holes (32), the second bolt holes
(33) and after third bolt fastening hole (35) it is fixed in right shell body (7) by third through-hole bolt；
The left end of 3rd SMA (14) passes through the second fixture after passing through the 5th SMA through-holes (36) and the 4th SMA through-holes (34)
It is fixed on right top plate (9), the right end of the 3rd SMA (14) passes through fourth hole bolt after the 4th bolt fastening hole (37)
It is fixed in right side wall panel (102).
8. box SMA- piezoelectricity according to claim 7 becomes friction composite damper, which is characterized in that first through hole spiral shell
Bolt (15), the second through-hole bolt, third through-hole bolt and fourth hole bolt are the nut bolt that centre bore is opened up along axis.
9. box SMA- piezoelectricity according to claim 1 becomes friction composite damper, which is characterized in that the first SMA
(12), the 2nd SMA (13) and the 3rd SMA (14) are that material is identical, diameter identical austenite NiTi SMA.
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| CN110805636A (en) * | 2019-10-16 | 2020-02-18 | 南京航空航天大学 | Annular piezoelectric stack-based damper |
| CN114000605A (en) * | 2021-12-15 | 2022-02-01 | 兰州理工大学 | Composite friction energy consumption variable tension TiNi alloy wire self-resetting damper |
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