CN108386472A - The bump leveller of metamaterial structure is coupled based on tension-torsion - Google Patents
The bump leveller of metamaterial structure is coupled based on tension-torsion Download PDFInfo
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- CN108386472A CN108386472A CN201810264791.7A CN201810264791A CN108386472A CN 108386472 A CN108386472 A CN 108386472A CN 201810264791 A CN201810264791 A CN 201810264791A CN 108386472 A CN108386472 A CN 108386472A
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- main body
- connecting piece
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- tension
- connector
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The bump leveller of metamaterial structure is coupled based on tension-torsion, the present invention provides a kind of bump leveller based on tension-torsion Interaction Mechanics property, belongs to vibration absorber.Structure is by left connector, main body and right connector composition.Device is using the special chiral metamaterial structure feature of main part, and when connector is acted on by pulling force or pressure, main body can twist displacement and deformation to absorb part energy, to achieve the purpose that vibration damping.It is an advantage of the invention that：Vibration absorber composition is simple and reliable, compact-sized, includes mainly left connector, main body and right connector, and wherein left and right connector can be designed according to actual condition, and the proper achievable manufacturing cost of selection is cheap, universal componentization is higher.
Description
Technical Field
The invention belongs to a vibration damper, and particularly relates to a vibration absorber based on a tension-torsion coupling metamaterial structure.
Background
Currently, many modern devices suffer from low frequency vibrations, whereby the working performance, life, accuracy, safety and reliability, efficiency of the device are greatly reduced. Modern equipment is subjected to low-frequency vibration often because of low-frequency disturbance, and in order to reduce vibration caused by disturbance, the addition of a vibration absorber to a mechanical system is a common vibration control measure, and the vibration response amplitude of the system can be effectively reduced at the cost of adding a certain weight.
Disclosure of Invention
The invention aims to provide a portable vibration absorber based on a tension-torsion coupling metamaterial structure, which is used for solving the problem that modern equipment is affected by low-frequency disturbance.
A vibration absorber based on a tension-torsion coupling metamaterial structure is characterized by comprising a left connecting piece, a main body and a right connecting piece; the main body is a chiral stretching torsion coupling metamaterial, and a hollow circular tube structure is formed by encircling a net-shaped material on the basis of hexagonal net-shaped units; the structure is similar to the structure of a single-wall chiral carbon nanotube in the microcosmic structure, and can generate torsion under the action of tensile force or pressure, wherein the surrounding angle is the same as the surrounding angle of the single-wall chiral carbon nanotube in the microcosmic set rule; the centers of the left connecting piece and the main body connecting part and the centers of the right connecting piece and the main body connecting part are all kept on the central axis of the main body; the main part is connected the face with left connecting piece, and the main part is all perpendicular to main part axis with the face of being connected of right connecting piece.
Chirality means: an object is not identical to its mirror image, which cannot coincide with the original object. It is an important symmetry feature as if the left and right hands were mirror images of each other and could not be superimposed.
The metamaterial means: some composite materials, which have artificially designed structures and exhibit extraordinary physical properties not possessed by natural materials, possess special properties not possessed by natural materials, and these properties are mainly derived from artificially designed special structures.
The tension-torsion coupling metamaterial is as follows: the metamaterial has the property that torsion can be generated under the tension or the pressure.
The main body of the vibration absorber can be twisted when being subjected to the acting force along the axial direction, so that a considerable part of input energy can be converted into energy for enabling the main body to be twisted and deformed, and the energy output in the axial direction is greatly reduced, and the purpose of absorbing vibration is achieved. The left and right connectors are designed for ease of assembly and better translation of the perturbations into tensile or compressive forces in the axial direction. The vibration absorption device is added in the transmission path of modern equipment and disturbed parts, and meanwhile, the connection mode of the left connecting piece and the right connecting piece with the main body meets the actual engineering requirement, so that most of the acting force transmitted to the main body is tensile force or pressure. In general, the axial direction of the vibration absorber is kept parallel to the disturbance transmission direction when the vibration absorber is used.
The beneficial effects of the present invention: (1) the structure design is simple and reliable, and the structure is compact; (2) the manufacturing cost is low, and the parts are highly versatile; (3) the design of the connecting piece can be carried out according to actual working conditions. The left connecting piece, the main body, and the right connecting piece can be integrally formed by 3D printing. The structure can use photosensitive resin materials, PLA, ABS and different types of metal materials according to actual needs.
Drawings
FIG. 1 is a schematic diagram of the structure of the apparatus of the present invention;
FIG. 2 is a schematic diagram of the setting rule of the encircling angle of the device according to the present invention.
Detailed Description
The invention provides a novel vibration absorber, which has an integral structure shown in figure 1 and consists of a left connecting piece 1, a main body 2 and a right connecting piece 3.
The structure of the main body 2 is as shown in fig. 1, a chiral stretching and twisting metamaterial structure is adopted, the structural appearance of the main body 2 is similar to that of a microscopic chiral carbon nanotube, the main body 2 uses a hexagonal unit as a basic unit, a net-shaped material is encircled to form a chiral hollow circular tube structure according to a surrounding angle, and the surrounding angle is set as shown in fig. 2. Such structures may be subject to torsional deformation when subjected to tensile or compressive forces. The center of the connecting part of the left connecting piece 1 and the main body 2 and the center of the connecting part of the right connecting piece 3 and the main body 2 are kept on the central axis of the main body 2.
The specific working process is as follows:
when modern equipment is disturbed externally, the external disturbance is converted into tensile force or pressure action through a connecting piece on one side of the vibration absorber and is transmitted to the main body, the chiral metamaterial structure of the main body is subjected to torsional displacement and deformation under the action of axial acting force, so that a part of energy is absorbed, and the residual energy is far less than the energy input by initial transmission, so that the purpose of vibration absorption is achieved.
Claims (2)
1. The utility model provides a bump leveller based on draw and turn round coupling metamaterial structure which characterized in that:
the device consists of a left connecting piece (1), a main body (2) and a right connecting piece (3);
the main body (2) is a chiral stretching and twisting coupled metamaterial, and a hollow circular tube structure is formed by encircling a net-shaped material according to a certain surrounding angle on the basis of a hexagonal net-shaped unit; the structure is similar to the structure of a single-wall chiral carbon nanotube in the microcosmic structure, and can generate torsion under the action of tensile force or pressure, wherein the surrounding angle is the same as the surrounding angle of the single-wall chiral carbon nanotube in the microcosmic set rule;
the centers of the connecting parts of the left connecting piece (1) and the main body (2) and the centers of the connecting parts of the right connecting piece (3) and the main body (2) are all kept on the central axis of the main body (2);
the connecting surface of the main body (2) and the left connecting piece (1) and the connecting surface of the main body (2) and the right connecting piece (3) are both vertical to the central axis of the main body (2).
2. The tension-torsion coupled metamaterial structure based absorber of claim 1, wherein:
The left connecting piece (1), the main body (2), and the right connecting piece (3) are 3D printed integrally formed structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810264791.7A CN108386472A (en) | 2018-03-28 | 2018-03-28 | The bump leveller of metamaterial structure is coupled based on tension-torsion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810264791.7A CN108386472A (en) | 2018-03-28 | 2018-03-28 | The bump leveller of metamaterial structure is coupled based on tension-torsion |
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| Publication Number | Publication Date |
|---|---|
| CN108386472A true CN108386472A (en) | 2018-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810264791.7A Pending CN108386472A (en) | 2018-03-28 | 2018-03-28 | The bump leveller of metamaterial structure is coupled based on tension-torsion |
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| CN (1) | CN108386472A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020143075A1 (en) * | 2019-01-10 | 2020-07-16 | 中山大学 | Novel three dimensional multi-cell metamaterial having localized pull-twist coupling effect |
| CN112049886A (en) * | 2020-09-10 | 2020-12-08 | 西安交通大学 | Chiral auxetic metamaterial structure with tension-torsion coupling characteristic and preparation method thereof |
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| CN105117542A (en) * | 2015-08-19 | 2015-12-02 | 南京理工大学 | Method for calculating axial compressive stress of novel quadrilateral chiral honeycomb |
| US20170007400A1 (en) * | 2007-02-05 | 2017-01-12 | Boston Scientific Scimed, Inc. | Synthetic composite structures |
| CN107276449A (en) * | 2017-06-07 | 2017-10-20 | 南京航空航天大学 | Chiral negative poisson's ratio structure based on dielectric type electroactive polymer |
| CN107421567A (en) * | 2017-06-06 | 2017-12-01 | 南京邮电大学 | A kind of implementation method of twist mode CNT and its application on a sensor |
| CN208089829U (en) * | 2018-03-28 | 2018-11-13 | 南京航空航天大学 | The bump leveller of metamaterial structure is coupled based on tension-torsion |
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2018
- 2018-03-28 CN CN201810264791.7A patent/CN108386472A/en active Pending
Patent Citations (6)
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| US20170007400A1 (en) * | 2007-02-05 | 2017-01-12 | Boston Scientific Scimed, Inc. | Synthetic composite structures |
| CN105117542A (en) * | 2015-08-19 | 2015-12-02 | 南京理工大学 | Method for calculating axial compressive stress of novel quadrilateral chiral honeycomb |
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| CN107421567A (en) * | 2017-06-06 | 2017-12-01 | 南京邮电大学 | A kind of implementation method of twist mode CNT and its application on a sensor |
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| GUO X，WANG J B等: "Mechanical properties of single-walled carbon nanotubes based on higher order Cauchy-Born rule", 《INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES》, vol. 43, no. 5, pages 1276 - 1290, XP028070476, DOI: 10.1016/j.ijsolstr.2005.05.049 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020143075A1 (en) * | 2019-01-10 | 2020-07-16 | 中山大学 | Novel three dimensional multi-cell metamaterial having localized pull-twist coupling effect |
| CN112049886A (en) * | 2020-09-10 | 2020-12-08 | 西安交通大学 | Chiral auxetic metamaterial structure with tension-torsion coupling characteristic and preparation method thereof |
| CN112049886B (en) * | 2020-09-10 | 2022-02-11 | 西安交通大学 | Chiral auxetic metamaterial structure with tension-torsion coupling characteristic and preparation method thereof |
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