CN116292716A - Contact locking type honeycomb structure, energy consumption structure and anti-collision structure - Google Patents
Contact locking type honeycomb structure, energy consumption structure and anti-collision structure Download PDFInfo
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- CN116292716A CN116292716A CN202310300929.5A CN202310300929A CN116292716A CN 116292716 A CN116292716 A CN 116292716A CN 202310300929 A CN202310300929 A CN 202310300929A CN 116292716 A CN116292716 A CN 116292716A
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- paper folding
- honeycomb structure
- pipe
- pipes
- connecting pipe
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- 238000005265 energy consumption Methods 0.000 title abstract description 16
- 239000000463 material Substances 0.000 abstract description 14
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 17
- 230000003139 buffering effect Effects 0.000 description 6
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 239000011825 aerospace material Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Images
Classifications
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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
- F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members
- F16F7/121—Vibration-dampers; Shock-absorbers using plastic deformation of members the members having a cellular, e.g. honeycomb, structure
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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
- F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members
- F16F7/128—Vibration-dampers; Shock-absorbers using plastic deformation of members characterised by the members, e.g. a flat strap, yielding through stretching, pulling apart
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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
- F16F2224/00—Materials; Material properties
- F16F2224/02—Materials; Material properties solids
- F16F2224/0225—Cellular, e.g. microcellular foam
Abstract
The invention discloses a contact locking type honeycomb structure, an energy consumption device and an anti-collision device, wherein the contact locking type honeycomb structure comprises a basic unit, the basic unit is formed by mutually connecting six paper folding pipes, the square bottom surfaces of every two adjacent paper folding pipes are mutually vertical, a through regular hexahedron is formed by surrounding the center of the square bottom surfaces, and the six paper folding pipes are positioned in the normal directions of six surfaces of the regular hexahedron; the basic units are arranged along an X axis, a Y axis and a Z axis; the two adjacent basic units are connected by a connecting pipe; the connecting pipe comprises one or more paper folding pipes; when the connecting pipe is a paper folding pipe, the connecting pipe is the paper folding pipe shared by two adjacent basic units. According to the invention, the paper folding elements are introduced into the honeycomb material, so that the honeycomb material has larger deformability, the three-way isotropy can be effectively ensured in a three-way identical topological quantity mode, and meanwhile, the mechanical properties of the material can be changed by adjusting the quantity of array units and the geometric parameters of the paper folding tubes, so that the honeycomb material has good programmability and wide application prospect.
Description
Technical Field
The invention relates to the technical field of honeycomb structures, in particular to a two-stage contact locking type honeycomb structure with isotropy.
Background
With the continuous exploration of science and technology by human beings, natural materials are gradually unable to meet the increasingly expanded use demands, and the demands for materials with supernormal physical characteristics are increasingly urgent, so that the energy-consuming structure with a complex structure is generated due to the rapid development of 3D printing technology. In the existing energy dissipation structure, the regular hexagonal honeycomb plate has a mature process system, has the characteristics of light weight, high strength, low relative density, excellent energy dissipation capacity and the like, and is a material widely applied at present. The excellent energy consumption performance makes the honeycomb material have wide application fields, such as aerospace materials, energy consumption structures, anti-collision structures and the like.
The traditional honeycomb structure is an anisotropic material, the coplanar strength of the anisotropic material is far lower than the different-plane strength, and the coplanar energy consumption capability is very poor, so that the application scene of the anisotropic material is more limited. The existing traditional honeycomb energy dissipation materials can realize efficient energy absorption, but the stress-strain curve usually only has one platform section and cannot realize multi-stage buffering energy absorption, so that when the working condition of multi-stage buffering is faced, various buffering materials are required to be combined together, the manufacturing process is extremely high in requirement, the final energy dissipation effect is influenced, and the application space of the honeycomb structure is greatly limited. That is, the prior art has the disadvantage that the coplanar energy consumption capability is too low, and the honeycomb structure cannot meet the multi-stage energy consumption requirement.
Disclosure of Invention
The invention provides an isotropic two-stage contact locking energy-consuming honeycomb structure, an energy-consuming structure and an anti-collision structure, which have large deformability and isotropy.
The technical scheme adopted for solving the technical problems is as follows:
the present invention first provides a contact locking honeycomb structure comprising:
the base unit is formed by connecting six paper folding pipes, the square bottom surfaces of every two adjacent paper folding pipes are mutually perpendicular, a transparent regular hexahedron is formed by surrounding the center, and the six paper folding pipes are positioned in the directions of six surface normals of the regular hexahedron;
the basic units are arranged along an X axis, a Y axis and a Z axis; and one paper folding tube is commonly used between two adjacent basic units.
As a further preferred aspect of the present invention, the paper folding tubes are in a three-pump folding structure, each paper folding tube includes two mirror-image three-pump folding structures, each three-pump folding structure is composed of four identical parallelograms, and control parameters of the parallelograms are respectively defined as height, width and included angle.
As a further preferred aspect of the present invention, the honeycomb structure has a contact locking type feature, and the honeycomb structure formed by the translation topology of the adjacent basic units is in contact locking type, and when compressed, the paper folding tubes of the basic units perpendicular to the compression direction are locked after being in contact, so as to provide energy consumption in the second stage.
As a further preferred aspect of the present invention, the included angle is in the range of 55 ° -90 °.
As a further preferred aspect of the invention, the ratio of the height to the width of the parallelogram is in the range of 0.5-2.
The invention also provides an energy consumption device which comprises the contact locking honeycomb structure.
The invention also provides an anti-collision device which comprises the contact locking honeycomb structure.
Through the technical scheme, compared with the prior art, the invention has the following beneficial technical effects:
1. in the isotropic two-stage contact locking type energy dissipation honeycomb structure provided by the invention, all paper folding pipes are in a three-pump folding configuration, so that the structure has excellent deformability, and can provide larger deformability and buffering energy dissipation capability when the structure is stressed.
2. In the isotropic two-stage contact locking type energy-consuming honeycomb structure provided by the invention, all geometric parameters can be adjusted in the initial design, so that the mechanical property of the structure is regulated and controlled, and the honeycomb structure has good programmability.
3. The isotropic two-stage contact locking type energy-consumption honeycomb structure provided by the invention has the advantages that the folded paper tubes are arranged in the X, Y, Z three directions, the three-directional isotropy property can be realized, and the structural design with the multidirectional buffering requirement can be met.
4. The isotropic two-stage contact locking type energy dissipation honeycomb structure provided by the invention has the advantages that when compressive loads in different directions are received, the out-of-plane and in-plane energy dissipation capability of the contact locking type hexahedral metamaterial can reach more than 90% of that of a traditional honeycomb under the same relative density and space size, the coplanar energy dissipation capability is more than 10 times that of the traditional honeycomb, and the out-of-plane and in-plane energy dissipation capability is very excellent.
5. The isotropic two-stage contact locking type energy dissipation honeycomb structure provided by the invention can provide two-stage energy dissipation capability when being compressed by external load, when the compression load is applied to the outer side, the paper folding pipe in the compression direction is folded and deformed at first to provide the first-stage energy dissipation, and then the paper folding pipe in the orthogonal direction is deformed to provide the second-stage energy dissipation, so that the structural design requirement with the multi-stage buffering requirement can be met.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic view of the overall structure of a preferred embodiment provided by the present invention;
FIG. 2 is a schematic diagram of the basic unit structure in a preferred embodiment provided by the present invention;
FIG. 3 is a schematic plan view of the connection of the base units to each other with a common folded paper tube;
FIG. 4 is a schematic perspective view of the connection of the base units with a common folded paper tube;
FIG. 5 is a schematic plan view of a connection between base units using two paper folding tubes;
FIG. 6 is a schematic perspective view of a connection between base units using two paper folding tubes;
FIG. 7 is a schematic view of a paper folding tube in a preferred embodiment of the present invention;
FIG. 8 is a schematic illustration of the structure of a three-pump folded configuration in a preferred embodiment provided by the present invention;
fig. 9 is a normalized stress-strain curve of a preferred embodiment provided by the present invention.
In the figure: the paper folding device comprises an X-direction paper folding pipe 1, a Y-direction paper folding pipe 2, a Z-direction paper folding pipe 3, a basic unit 4, a connecting pipe 5, a parallelogram height 11, a parallelogram width 12, a parallelogram included angle 13 and a paper folding pipe bottom surface 31.
Description of the embodiments
The present invention will now be described in further detail with reference to the accompanying drawings. In this application, it should be understood that the specific dimensions and the number adopted in the present embodiment are only for illustrating the technical scheme, and do not limit the protection scope of the present invention.
As shown in fig. 1-4, there is an isotropic two-stage contact locking energy dissipating honeycomb structure consisting of a number of l×m×n identical basic cells 5 topologically formed along the X, Y, and Z axes, it being understood that l=m=n=4 in the figure, but that in practice it is only necessary to satisfy l+.1, m+.1, n+.1.
The basic unit 4 is formed by mutually connecting six paper folding pipes, the bottom surfaces 31 of every two adjacent paper folding pipes are mutually perpendicular, the bottom surfaces 31 of the paper folding pipes are square, the six bottom surfaces are surrounded into a transparent regular hexahedral structure at the center, and the six paper folding pipes are positioned in the normal directions of the six surfaces of the regular hexahedral; the six folding tubes include two X-direction folding tubes 1, two Y-direction folding tubes 2 and two Z-direction folding tubes 3, see fig. 2. A paper folding tube is commonly used between two adjacent basic units 4, and an X-direction paper folding tube 1 is commonly used between two adjacent basic units 4 in the X-axis direction, and the paper folding tube 1 shared between two adjacent basic units 4 is defined as a connecting tube 5, see fig. 3 and 4.
The paper folding pipes are three-pump folding structures, each paper folding pipe comprises two mirror-image three-pump folding structures, each three-pump folding structure is composed of four identical parallelograms, and control parameters of the parallelograms are respectively defined as height 11, width 12 and included angle 13, and see fig. 7 and 8. The surface surrounded by A, B, C, D is the paper folding pipe bottom surface 31.
As a preferred embodiment, the height of the parallelogram is 10mm, the width of the parallelogram is 10mm, the included angle of the parallelogram is 60 degrees, the ratio of the height to the width of the parallelogram is 1, and the number of the connecting pipes 5 is 1.
In this example, a honeycomb structure of 4 x 4 base units 4 as shown in fig. 1 was established, the materials in the force structure were all defined as aluminum, the present example completed the finite element numerical simulation calculation of the mechanical properties of the honeycomb structure, as shown in fig. 9. The honeycomb structure in the embodiment has good two-stage energy consumption capability through calculation, is of an isotropic structure, and has wide application space. When a compressive load is applied in the Z-direction, the paper folding tube 3 in the compressive direction is first folded and deformed to provide the first stage of energy consumption, and then the X-direction paper folding tube 1 and the Y-direction paper folding tube 2 are deformed to provide the second stage of energy consumption. The first stage is deformed into a rigid movable stage, so that the normalized stress is low, and after the Z-direction folding tube 3 is folded, the contact between the surfaces is carried out to enter a non-rigid movable second stage, thereby exhibiting the characteristic of contact locking.
In the invention, the number of the connecting pipes 5 can be adjusted according to the actual use requirement, and referring to fig. 5 and 6, the two basic units 4 are connected through 2 connecting pipes 5, the parallelogram height 11 in the three-pump folding configuration, the parallelogram width 12 and the parallelogram included angle 13 are all adjustable parameters, and the invention is applicable to various different application conditions.
The present embodiment provides an energy dissipation device, and in particular, uses the contact locking type honeycomb structure provided in the foregoing embodiment as an energy dissipation unit of the energy dissipation device, and uses the contact locking type honeycomb structure to dissipate energy.
The invention also provides an anti-collision device, which comprises the contact locking honeycomb structure, and particularly the contact locking honeycomb structure provided by the embodiment is used as an energy consumption unit of the anti-collision device, and the energy consumption is carried out by using the contact locking honeycomb structure, so that the aim of collision prevention is fulfilled.
The above-described embodiment is merely one embodiment of the present invention, the present invention is not limited to this embodiment, and any simple modification, substitution without departing from the principle and essential characteristics of the present invention fall within the scope of the present invention.
Claims (6)
1. A touch-locked honeycomb structure, comprising:
the base unit is formed by connecting six paper folding pipes, the square bottom surfaces of every two adjacent paper folding pipes are mutually perpendicular, a transparent regular hexahedron is formed by surrounding the center, and the six paper folding pipes are positioned in the directions of six surface normals of the regular hexahedron;
the basic units are arranged along an X axis, a Y axis and a Z axis; the adjacent two basic units are connected by adopting a connecting pipe; the connecting pipe comprises one or more than one paper folding pipe; when the connecting pipe is one paper folding pipe, the connecting pipe is the paper folding pipe shared by two adjacent basic units.
2. The touch-locked honeycomb structure of claim 1, wherein: the paper folding pipes are three-pump folding structures, each paper folding pipe comprises two mirror-image three-pump folding structures, and each three-pump folding structure consists of four identical parallelograms.
3. The touch-locked honeycomb structure of claim 2, wherein: the included angle of the parallelograms forming the paper folding pipe ranges from 55 degrees to 90 degrees.
4. A contact locking honeycomb structure according to claim 3, characterized in that: the ratio of the height to the width of the parallelogram constituting the paper folding pipe ranges from 0.5 to 2.
5. A power dissipating structure comprising a touch-locked honeycomb structure according to any one of claims 1-4.
6. An impact structure comprising the touch-locked honeycomb structure of any one of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310300929.5A CN116292716A (en) | 2023-03-27 | 2023-03-27 | Contact locking type honeycomb structure, energy consumption structure and anti-collision structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310300929.5A CN116292716A (en) | 2023-03-27 | 2023-03-27 | Contact locking type honeycomb structure, energy consumption structure and anti-collision structure |
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| Publication Number | Publication Date |
|---|---|
| CN116292716A true CN116292716A (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310300929.5A Pending CN116292716A (en) | 2023-03-27 | 2023-03-27 | Contact locking type honeycomb structure, energy consumption structure and anti-collision structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116905660A (en) * | 2023-09-14 | 2023-10-20 | 华南理工大学 | Double-shaft rigidity-adjustable assembled paper folding construction material |
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2023
- 2023-03-27 CN CN202310300929.5A patent/CN116292716A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116905660A (en) * | 2023-09-14 | 2023-10-20 | 华南理工大学 | Double-shaft rigidity-adjustable assembled paper folding construction material |
| CN116905660B (en) * | 2023-09-14 | 2023-12-08 | 华南理工大学 | Double-shaft rigidity-adjustable assembled paper folding construction material |
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