CN212271761U - Composite axial energy dissipation device based on piezoelectricity and shape memory alloy - Google Patents
Composite axial energy dissipation device based on piezoelectricity and shape memory alloy Download PDFInfo
- Publication number
- CN212271761U CN212271761U CN202021418698.6U CN202021418698U CN212271761U CN 212271761 U CN212271761 U CN 212271761U CN 202021418698 U CN202021418698 U CN 202021418698U CN 212271761 U CN212271761 U CN 212271761U
- Authority
- CN
- China
- Prior art keywords
- sma
- shape memory
- device based
- steel pipe
- piezoelectric
- 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.)
- Withdrawn - After Issue
Links
- 229910001285 shape-memory alloy Inorganic materials 0.000 title claims abstract description 48
- 239000002131 composite material Substances 0.000 title claims description 14
- 230000021715 photosynthesis, light harvesting Effects 0.000 title claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 55
- 239000010959 steel Substances 0.000 claims abstract description 55
- 239000000919 ceramic Substances 0.000 claims abstract description 23
- 150000001875 compounds Chemical class 0.000 claims abstract description 8
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000003446 memory effect Effects 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
Images
Landscapes
- Vibration Prevention Devices (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The utility model belongs to the technical field of the structural vibration control, a compound axial power consumption device based on piezoelectricity and shape memory alloy is provided, including screw rod, steel pipe, stiffening rib, steel sheet, nut, piezoceramics, nut and SMA silk bundle. The mechanical energy of the structure under pressure is converted into the electric energy of the piezoelectric ceramics and then converted into the heat energy, so that the energy consumption efficiency is high and the stress performance is good; the SMA tows have large tensile bearing capacity, shape memory effect and good corrosion resistance and fatigue resistance; the number of the sections, the specifications of the piezoelectric ceramics and the SMA tows can be adjusted according to actual needs, so that the structure can be adjusted according to the size of the axial force and the specific stress condition; the steel pipe has the advantages of simple structure, easy maintenance, energy consumption capability superior to that of a common steel pipe and the like, is convenient to install, does not influence the external shape, and has wide application prospect.
Description
Technical Field
The utility model belongs to the technical field of the structural vibration control, specifically indicate a compound axial power consumption device based on piezoelectricity and shape memory alloy.
Background
In recent years, with the continuous increase of steel output in China, the pipe truss is widely used, the proportion of the pipe truss in a building is larger, and the materials of the cross section of the pipe truss structure are uniformly distributed around a neutral axis, so that the cross section has the characteristics of good compression resistance, high torsional rigidity and the like. In addition, the pipe truss structure has good integral performance, simple structure, beautiful appearance and easy manufacture, installation, turning over and hoisting.
At present, many steel truss members are easy to cause fatigue cracks and defects due to long-term power cycle load, so that structural defects such as reduction of structural bearing capacity and durability are generated, and the requirements of normal use of people cannot be met.
The utility model creatively provides a composite axial energy dissipation device based on piezoelectricity and shape memory alloy, which utilizes the principle of piezoelectric effect to convert the axial pressure borne by a steel pipe into electric energy and then converts the electric energy into heat energy to be consumed by recycling resistance wires, thereby greatly increasing the energy dissipation efficiency; the Shape Memory Alloy (SMA) wire bundle is used for bearing tensile force, has the advantages of large allowable deformation, recoverability of deformation and the like, and can effectively consume the energy of the structure under the dynamic load under the combined action of the SMA wire bundle and the piezoelectric energy consumption device, so that the dynamic response of the structure is reduced, and the service life of the SMA wire bundle is prolonged.
SUMMERY OF THE UTILITY MODEL
The utility model aims at designing a truss connection device that the structure is reasonable, and the power consumption effect is obvious.
The technical scheme of the utility model:
a composite axial energy dissipation device based on piezoelectric and shape memory alloy mainly comprises a screw, a steel pipe, a nut, piezoelectric ceramics, a stiffening rib, a steel sheet, a nut and SMA tows,
the whole composite axial energy dissipation device is provided with a plurality of sections, each section mainly comprises a steel pipe, a steel sheet and piezoelectric ceramics, and all sections are connected in series by SMA tows;
the steel plates are rigidly connected with the steel pipe, the piezoelectric ceramics between the segments are tightly contacted with the upper and lower steel plates and are fixed by a buckle formed by the steel plates and the end part of the steel pipe;
a stiffening rib is arranged between the steel pipe and the steel sheet; a hole is reserved in the center of the steel sheet and the piezoelectric ceramic;
the upper end of the SMA wire bundle is rigidly connected with the screw, the lower end of the SMA wire bundle is rigidly connected with the nut, and the SMA wire bundle sequentially passes through the steel sheets on each section and the hole reserved in the center of the piezoelectric ceramic;
and the nut is tightly twisted with the screw rod, the SMA wire bundle is fixed, and pretightening force is applied.
The steel sheet prepared holes on each section can just penetrate through the SMA tows so as to limit the transverse displacement of the SMA tows.
The number of the segments is adjusted according to the magnitude of the axial force and the specific stress condition.
Eight symmetrical stiffening ribs are adopted in a single segment, so that the structure is more stable.
The utility model has the advantages that:
(1) the utility model discloses a compound axial power consumption device based on piezoelectricity and shape memory alloy, the mechanical energy of structure pressurized is converted into piezoceramics's electric energy, and then is converted into heat energy, and the power consumption efficiency is high, and the atress performance is good;
(2) the composite axial energy dissipation device based on piezoelectricity and shape memory alloy adopts SMA tows with large stress and small strain, and can bear larger tension; the self-resetting effect is achieved due to the shape memory effect;
(3) the utility model discloses a compound axial power consumption device based on piezoelectricity and shape memory alloy, can exert the pretightning force to the SMA silk bundle through the bolt, and the numerical value is nimble, has both strengthened the security of structure, also can make the structure be applicable to different atress circumstances;
(4) the utility model discloses a compound axial power consumption device based on piezoelectricity and shape memory alloy can adjust the quantity of segment section, piezoceramics and the specification of SMA silk bundle according to actual need, makes the structure adjust according to the size of the axial force that receives and the concrete atress condition;
(5) the utility model discloses a compound axial energy dissipation device based on piezoelectricity and shape memory alloy, which has the advantages of simple structure, easy maintenance, better stress performance than common steel pipes and the like;
drawings
Fig. 1 is a plan view of a composite axial energy dissipation device based on piezoelectric and shape memory alloy according to an embodiment of the present invention;
fig. 2 is a cross-sectional view taken along a line a-a of a composite axial energy dissipation device based on piezoelectric and shape memory alloy according to an embodiment of the present invention;
fig. 3 is a B-B sectional view of a composite axial energy dissipation device based on piezoelectric and shape memory alloy according to an embodiment of the present invention;
in the figure: 1, a screw rod; 2, steel pipes; 3, a nut; 4, piezoelectric ceramics; 5 a stiffening rib; 6, steel sheets; 7, a screw cap; 8SMA wire bundle.
Detailed Description
The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.
An embodiment of the utility model provides a pair of compound axial power consumption device based on piezoelectricity and shape memory alloy, include: the device comprises a screw rod 1, a steel pipe 2, a nut 3, piezoelectric ceramics 4, a stiffening rib 5, a steel sheet 6, a nut 7 and SMA tows 8.
In the embodiment, the whole device is provided with a plurality of sections, each section consists of a steel pipe 2, a steel sheet 6 and piezoelectric ceramics 4, all the sections are connected in series by SMA tows 8, when the structure is pressed, the pressure borne by the steel pipe 2 can be transmitted to the steel sheet 6, the local stability of the welding part of the steel pipe 2 and the steel sheet 6 can be ensured and concentrated force can be uniformly transmitted by arranging eight symmetrical stiffening ribs 5, and the position of the piezoelectric ceramics 4 can be fixed by a buckle formed by the upper steel sheet 6 and the lower steel sheet 6 so as to prevent the piezoelectric ceramics 4 from sliding left and right; the structure is endowed with certain bending resistance, torsion resistance and shearing resistance through the pretightening force applied to the SMA tows, so that the axial force component can still be kept as a whole when being subjected to bending moment, torsion and shearing force.
The structure is subjected to reciprocating tensile and compressive forces under the action of power. When the component is pressed, the steel sheet extrudes the piezoelectric ceramic, positive and negative charges are respectively generated on the upper surface and the lower surface of the piezoelectric ceramic, a closed loop is formed by connecting copper wires of the positive electrode and the negative electrode, and electric energy is converted into heat energy and is quickly dissipated. When the component is under tension, the SMA wire bundle is under tension transmitted by two adjacent sections, and because the elastic coefficient of the SMA wire bundle is larger, the SMA wire bundle generates smaller deformation when being stressed, and has good self-resetting capability when being unloaded, and because the SMA material has the advantages of shape memory, super elasticity and high damping property, the SMA wire bundle can effectively prevent the structure from being damaged when being tensioned.
The mechanical energy of the structure under pressure is converted into the electric energy of the piezoelectric ceramics and then converted into the heat energy, so that the energy consumption efficiency is high and the stress performance is good; the SMA tows with large stress and small strain are adopted, can bear larger tension, have shape memory effect and good corrosion resistance and fatigue resistance; the number of the segments, the specifications of the piezoelectric ceramics and the SMA tows can be adjusted according to actual needs, so that the structure can be adjusted according to the size of the axial force and the specific stress condition; has the advantages of simple structure, easy maintenance, better stress performance than common steel pipes, and the like.
Design the utility model discloses the time need pay attention to: firstly, the compression-resistant bearing capacity of the piezoelectric ceramic piece is higher than the design pressure of a steel pipe or a component, so that the piezoelectric ceramic piece can stably consume energy all the time before the component fails; secondly, the tensile bearing capacity of the SMA wire bundle is higher than the design tensile force of the steel pipe or the component, and the tensile rigidity of the SMA wire bundle is similar to that of the steel pipe or the design rigidity, so that the integral rigidity and stability of the structure are ensured; thirdly, the screw and the nut which are rigidly connected with the SMA tows need enough strength and rigidity, and the pretightening force formed by the three parts is also big enough to connect all the segments to form a whole; fourthly, eight symmetrical stiffening ribs are arranged, so that the local stability of the welding part of the steel pipe and the steel sheet can be ensured, and the concentrated force can be transmitted uniformly; fifthly, the upper surface and the lower surface of the piezoelectric ceramic are connected by adopting a plurality of (more than 2) copper wires, so that the reliability and the redundancy of the system are ensured.
The above embodiments of the present invention are not right the utility model discloses the limited protection scope, the utility model discloses an embodiment is not limited to this, all kinds of basis according to the above-mentioned of the utility model discloses an under the above-mentioned basic technical thought prerequisite of the utility model, right according to ordinary technical knowledge and the conventional means in this field the modification, replacement or the change of other multiple forms that above-mentioned structure made all should fall within the protection scope of the utility model.
Claims (5)
1. The utility model provides a compound axial power consumption device based on piezoelectricity and shape memory alloy, mainly comprises screw rod (1), steel pipe (2), nut (3), piezoceramics (4), stiffening rib (5), steel sheet (6), nut (7) and SMA silk bundle (8), its characterized in that:
the whole composite axial energy dissipation device is provided with a plurality of sections, each section mainly comprises a steel pipe (2), a steel sheet (6) and piezoelectric ceramics (4), and all sections are connected in series by SMA tows (8);
the steel plates (6) are rigidly connected with the steel pipe (2), the piezoelectric ceramics (4) between the segments are tightly contacted with the upper and lower steel plates (6) and are fixed by a buckle formed by the steel plates (6) and the end part of the steel pipe (2);
a stiffening rib (5) is arranged between the steel pipe (2) and the steel sheet (6); a hole is reserved in the center of the steel sheet (6) and the piezoelectric ceramic (4);
the upper end of the SMA filament bundle (8) is rigidly connected with the screw (1), the lower end of the SMA filament bundle is rigidly connected with the screw cap (7), and the SMA filament bundle sequentially penetrates through the steel sheets (6) on each section and the hole reserved in the center of the piezoelectric ceramic (4);
the nut (3) is tightly twisted with the screw rod (1), the SMA wire bundle (8) is fixed, and pretightening force is applied.
2. Composite axial dissipation device based on piezoelectric and shape memory alloy, according to claim 1, characterized in that: holes reserved on the steel sheets (6) of each section can just penetrate through the SMA tows (8) so as to limit the transverse displacement of the SMA tows (8).
3. Composite axial dissipation device based on piezoelectric and shape memory alloy, according to claim 1 or 2, characterized in that: the number of the segments is adjusted according to the magnitude of the axial force and the specific stress condition.
4. Composite axial dissipation device based on piezoelectric and shape memory alloy, according to claim 1 or 2, characterized in that: eight symmetrical stiffening ribs are adopted in a single segment, so that the structure is more stable.
5. A composite axial dissipation device based on piezoelectric and shape memory alloys, according to claim 3, characterized in that: eight symmetrical stiffening ribs are adopted in a single segment, so that the structure is more stable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021418698.6U CN212271761U (en) | 2020-07-17 | 2020-07-17 | Composite axial energy dissipation device based on piezoelectricity and shape memory alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021418698.6U CN212271761U (en) | 2020-07-17 | 2020-07-17 | Composite axial energy dissipation device based on piezoelectricity and shape memory alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212271761U true CN212271761U (en) | 2021-01-01 |
Family
ID=73899016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021418698.6U Withdrawn - After Issue CN212271761U (en) | 2020-07-17 | 2020-07-17 | Composite axial energy dissipation device based on piezoelectricity and shape memory alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212271761U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706142A (en) * | 2020-07-17 | 2020-09-25 | 大连理工大学 | Composite axial energy dissipation device based on piezoelectricity and shape memory alloy |
-
2020
- 2020-07-17 CN CN202021418698.6U patent/CN212271761U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706142A (en) * | 2020-07-17 | 2020-09-25 | 大连理工大学 | Composite axial energy dissipation device based on piezoelectricity and shape memory alloy |
| WO2022011751A1 (en) * | 2020-07-17 | 2022-01-20 | 大连理工大学 | Piezoelectricity and shape memory alloy-based composite-type axial energy dissipation apparatus |
| US11293415B2 (en) | 2020-07-17 | 2022-04-05 | Dalian University Of Technology | Composite axial energy consumption device based on piezoelectricity and shape memory alloy |
| CN111706142B (en) * | 2020-07-17 | 2024-05-28 | 大连理工大学 | Composite axial energy dissipation device based on piezoelectricity and shape memory alloy |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113802909B (en) | Self-resetting energy-dissipation supporting structure and assembling method | |
| CN109853770B (en) | Self-reset double-bow counter-pulling double-energy-consumption supporting device | |
| CN212271761U (en) | Composite axial energy dissipation device based on piezoelectricity and shape memory alloy | |
| CN108951922A (en) | A kind of cylinder tension and compression damper with limit reset function | |
| CN212249422U (en) | Unidirectional clamp force-transferring low-prestress self-resetting support | |
| CN111706142B (en) | Composite axial energy dissipation device based on piezoelectricity and shape memory alloy | |
| CN208870215U (en) | A kind of cylinder tension and compression damper with limit reset function | |
| CN108708475A (en) | Barrel type tension and compression damper | |
| CN108951924A (en) | A kind of multiple energy consumption shearing damp device | |
| CN1730829A (en) | Windproof and vibration reduction screw thread clamp for bridge cable | |
| CN105350646B (en) | A kind of two-dimentional tension integral structure unit based on hexagon geometry | |
| CN108678492A (en) | Drum type brake friction energy-dissipating damper | |
| CN210025762U (en) | Precast concrete tower section of thick bamboo connecting piece | |
| CN210105031U (en) | Replaceable shear wall foot support based on shape memory alloy | |
| CN108894352A (en) | Reverse antisymmetry formula damper | |
| CN215630795U (en) | Composite metal damper for cantilever structure | |
| CN108798171A (en) | Big damping buffering formula damper | |
| CN108951926A (en) | The tension and compression damper of built-in circle mild-steel energy-consumption inner cylinder | |
| CN208748887U (en) | The tension and compression damper of built-in circle mild-steel energy-consumption inner cylinder | |
| CN208441584U (en) | Combined type tension and compression damper | |
| CN201354822Y (en) | Dual-head conjoined tension spring | |
| CN208734177U (en) | Barrel type tension and compression damper | |
| CN2570344Y (en) | Energy dissipating damper | |
| CN103422587B (en) | Intelligent-monitoring and maintenance-free buckling restrained brace of carbon fiber resistance sensing layer | |
| CN214461377U (en) | Self-resetting buckling-restrained brace with replaceable energy-consuming inner core |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20210101 Effective date of abandoning: 20240528 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20210101 Effective date of abandoning: 20240528 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |