CN112665460A - Indent honeycomb type explosion-proof construction - Google Patents
Indent honeycomb type explosion-proof construction Download PDFInfo
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- CN112665460A CN112665460A CN202011530556.3A CN202011530556A CN112665460A CN 112665460 A CN112665460 A CN 112665460A CN 202011530556 A CN202011530556 A CN 202011530556A CN 112665460 A CN112665460 A CN 112665460A
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Abstract
The invention provides an inward concave honeycomb type explosion-proof structure, which comprises: the concave honeycomb type explosion-proof structure has the advantages of low density, high impact strength, high explosion resistance, better sound and noise absorption performance and good energy and vibration absorption performance due to the unique and superior performance of the honeycomb type negative Poisson ratio structure, and has wide application prospects in the aspects of explosion prevention, bulletproof, light armor protection and the like.
Description
Technical Field
The invention relates to the technical field of explosion-proof structures, in particular to an inwards concave honeycomb type explosion-proof structure.
Background
The existing explosion-proof equipment is large in mass which reaches 30-50 Kg, poor in wearability, 5-6 times as high in heat-moisture resistance as that of a down jacket, seriously threatens life safety of rescuers, and reduces rescue efficiency. In recent decades, researchers at home and abroad carry out a great deal of research on light explosion-proof structures and the protective performance thereof, focus on the balance between the protective performance and the wearability of individual explosion-proof equipment, and put forward higher requirements on novel light explosion-proof materials and structures.
The existing common explosion-proof structure has high density, high cost and long processing period and is limited by a complex model. The individual protective equipment manufactured on the basis has low protection efficiency and poor wearability, and is difficult to effectively protect fatal injuries caused by shock waves generated by explosion.
Disclosure of Invention
The invention provides an inwards concave honeycomb type anti-explosion structure, which is used for solving the problems of low anti-explosion strength and less absorbed energy of the anti-explosion structure in the prior art.
The invention provides an inward concave honeycomb type explosion-proof structure, which comprises: the sandwich structure comprises a panel, a sandwich layer and a back plate, wherein the sandwich layer is arranged between the panel and the back plate, and the sandwich layer is composed of a negative Poisson ratio structure and fillers.
According to the concave honeycomb type explosion-proof structure provided by the invention, the negative Poisson ratio structure is a honeycomb type negative Poisson ratio structure, and the honeycomb type negative Poisson ratio structure is a three-dimensional honeycomb structure formed by cell unit arrays and axial stretching.
According to the concave honeycomb type explosion-proof structure provided by the invention, the filler is arranged in the cell body unit.
According to the concave honeycomb type explosion-proof structure provided by the invention, the filler has the same shape as the cell units, and the size of the filler is smaller than that of the cell units.
According to the concave honeycomb type explosion-proof structure provided by the invention, the fillers are arranged at intervals in the three-dimensional honeycomb structure formed by axially stretching the cell units.
According to the inward concave honeycomb type explosion-proof structure provided by the invention, the fillers are equidistantly stretched along the axial stretching direction of the cell units.
According to the concave honeycomb type explosion-proof structure provided by the invention, the cell units are concave cell units.
According to the concave honeycomb type explosion-proof structure provided by the invention, the panel is a boron carbide ceramic panel, and the back plate is an UHMWPE fiber buffering back plate.
According to the concave honeycomb type explosion-proof structure provided by the invention, the sandwich layer is made of TC4 titanium alloy powder.
According to the concave honeycomb type explosion-proof structure provided by the invention, the sandwich layer is processed and formed by adopting a 3D printing technology.
The concave honeycomb type explosion-proof structure provided by the invention has the advantages of low density, high impact strength, high anti-knock property, better sound absorption and noise resistance and good energy absorption and shock absorption performance due to the unique and superior performance of the honeycomb type negative Poisson ratio structure, and has wide application prospects in the aspects of explosion prevention, bulletproof, light armor protection and the like.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an indent honeycomb type explosion-proof structure provided by the present invention;
FIG. 2 is a schematic structural view of a honeycomb negative Poisson's ratio structure provided by the present invention;
FIG. 3 is a cross-sectional view of a honeycomb negative Poisson's ratio structure provided by the present invention;
FIG. 4 is a schematic structural diagram of a cell unit and a filler provided by the present invention;
reference numerals:
1: a panel; 2: a sandwich layer; 3: a back plate;
4: a soma unit; 5: and (4) filling materials.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the following describes the concave honeycomb type explosion-proof structure of the present invention with reference to fig. 1-4, which includes a face plate 1, a sandwich layer 2 and a back plate 3, wherein the sandwich layer 2 is disposed between the face plate 1 and the back plate 3, and can be connected by gluing, bolting, welding, etc., and the sandwich layer 2 is composed of a negative poisson ratio structure and a filler 5. The filler 5 may be arranged inside or outside the negative poisson's ratio structure, and the filler 5 serves to enhance the shock absorption of the negative poisson's ratio structure. The panel 1 can be a straight plate, a concave plate and a wave-shaped plate and is used for offsetting impact force; the back plate 3 can be a straight plate, a concave plate and a wave-shaped plate and is used for offsetting impact force;
the negative Poisson ratio structure is a honeycomb-shaped negative Poisson ratio structure, and the honeycomb-shaped negative Poisson ratio structure is a three-dimensional honeycomb structure formed by cell body units 4 in an array and axially stretching. The nest type explosion-proof structure has various advantages of light weight, high strength, multi-component integration, strong designability, low manufacturing cost, short development period and the like, and has wide application prospect in the engineering fields of military industry, aerospace, mechanical engineering and the like.
The filler 5 is provided in the cell unit 4. The cell units 4 compress the filler 5 when compressed under a force, further counteracting the force.
The filler 5 has the same shape as the cell unit 4, and the size of the filler 5 is smaller than that of the cell unit 4. The fillers 5 may be arranged vertically or horizontally.
The fillers 5 are arranged at intervals in a three-dimensional honeycomb structure formed by axially stretching the cell units 4. The three-dimensional honeycomb structure is provided with holes formed by axially stretching the cell units 4, and the fillers 5 are arranged in the holes at intervals to play a role in supporting and counteracting force.
The cell unit 4 is a concave cell unit. In particular, the cell structure is an internal concave hexagonal cell, and the common honeycomb structure is generally divided into a regular quadrilateral, a regular hexagon and an internal concave hexagonal honeycomb. The effect of the concave hexagonal honeycomb structure on the absorption of explosion energy and the reduction of explosion shock waves is obviously better than that of a regular quadrilateral honeycomb structure and a regular hexagonal honeycomb structure.
The concave type explosion-proof structure is formed by stretching a two-dimensional concave honeycomb structure towards a third dimension, the vertical direction of the concave type explosion-proof structure is formed by aligning and arranging a plurality of completely same concave type cell units, the horizontal direction of the concave type explosion-proof structure is formed by staggering the plurality of completely same concave type cell units, and the left (right) upper side concave surface and the left (right) lower side concave surface of each concave type cell unit are respectively in line with the left (right) side so as to coincide with the right (left) lower side concave surface and the right (left) upper side concave surface of two adjacent concave type cell units.
The size, the concave angle and the shape of each concave cell unit are completely the same.
The planar sizes of the concave cell body units are all 3.4mm multiplied by 3.4mm, and the concave angles are all 30 degrees.
The wall thickness of the concave cell body unit is 0.1 mm.
The faceplate 1 is a boron carbide ceramic faceplate, and the backboard 3 is an UHMWPE fiber buffer backboard.
The sandwich layer 2 is made of TC4 titanium alloy powder.
The sandwich layer 2 is processed and formed by adopting a 3D printing technology.
Example 2:
the rest is the same as in example 1.
The fillers 5 are equally stretched in the direction in which the cell units 4 are axially stretched. The three-dimensional honeycomb structure is provided with holes formed by axially stretching the cell units 4, and the fillers 5 are arranged in the holes to play a role in supporting and counteracting force.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An implosion proof structure of the internally recessed honeycomb type, comprising: the sandwich structure comprises a panel, a sandwich layer and a back plate, wherein the sandwich layer is arranged between the panel and the back plate, and the sandwich layer is composed of a negative Poisson ratio structure and fillers.
2. The implosion-proof structure of claim 1 wherein said negative poisson's ratio structure is a honeycomb negative poisson's ratio structure, said honeycomb negative poisson's ratio structure being a three-dimensional honeycomb structure formed by an array of cell units and axially stretched.
3. The implosion protection structure of claim 2, wherein said filler is disposed within a cell.
4. The implosion protection structure of claim 3, wherein said filler is the same shape as the cell units, and the size of said filler is smaller than the cell units.
5. The implosion protection structure of the female honeycomb type as recited in claim 4, wherein said filler is disposed at intervals in a three-dimensional honeycomb structure composed of axially stretched cell units.
6. The implosion protection structure of the female honeycomb type as set forth in claim 4, wherein said fillers are equally stretched in the direction in which the cell units are axially stretched.
7. The implosion protection structure of claim 2, wherein said cell units are female cell units.
8. The internally concave honeycomb type explosion-proof structure according to claim 1, wherein the face plate is a boron carbide ceramic face plate, and the back plate is an UHMWPE fiber buffer back plate.
9. The internally concave honeycomb type explosion-proof structure according to any one of claim 1, wherein the sandwich layer is made of TC4 titanium alloy powder.
10. The implosion proof structure of the female honeycomb type as recited in claim 9, wherein said sandwich layer is formed by 3D printing technique.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011530556.3A CN112665460A (en) | 2020-12-22 | 2020-12-22 | Indent honeycomb type explosion-proof construction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011530556.3A CN112665460A (en) | 2020-12-22 | 2020-12-22 | Indent honeycomb type explosion-proof construction |
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| CN112665460A true CN112665460A (en) | 2021-04-16 |
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| CN202011530556.3A Pending CN112665460A (en) | 2020-12-22 | 2020-12-22 | Indent honeycomb type explosion-proof construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116176056A (en) * | 2023-02-15 | 2023-05-30 | 中国人民解放军军事科学院系统工程研究院 | Composite material with density gradient and negative poisson ratio honeycomb structure |
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| US20130264757A1 (en) * | 2012-04-04 | 2013-10-10 | Rolls-Royce Plc | Vibration damping |
| CN106907418A (en) * | 2017-01-20 | 2017-06-30 | 上海交通大学 | Phonon crystal negative poisson's ratio honeycomb vibration isolation anti-impact device |
| CN108304621A (en) * | 2018-01-12 | 2018-07-20 | 南京航空航天大学 | A kind of explosion-proof car door of negative poisson's ratio structure and optimization method based on functionally gradient |
| CN109869431A (en) * | 2019-03-25 | 2019-06-11 | 长沙理工大学 | A kind of three-dimensional anti-impact material with negative poisson's ratio characteristic |
| CN110779391A (en) * | 2019-11-20 | 2020-02-11 | 中国人民解放军军事科学院国防科技创新研究院 | Metal ceramic composite armor with negative Poisson's ratio and preparation method and application thereof |
| CN210715702U (en) * | 2019-10-16 | 2020-06-09 | 湖北汽车工业学院 | Novel negative Poisson ratio structure and two-dimensional honeycomb structure thereof |
| CN210715682U (en) * | 2019-10-16 | 2020-06-09 | 湖北汽车工业学院 | Three-dimensional negative Poisson ratio energy-absorbing filler structure |
| CN111692270A (en) * | 2020-06-22 | 2020-09-22 | 湖北汽车工业学院 | Negative Poisson ratio cell element and honeycomb structure thereof |
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2020
- 2020-12-22 CN CN202011530556.3A patent/CN112665460A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130264757A1 (en) * | 2012-04-04 | 2013-10-10 | Rolls-Royce Plc | Vibration damping |
| CN106907418A (en) * | 2017-01-20 | 2017-06-30 | 上海交通大学 | Phonon crystal negative poisson's ratio honeycomb vibration isolation anti-impact device |
| CN108304621A (en) * | 2018-01-12 | 2018-07-20 | 南京航空航天大学 | A kind of explosion-proof car door of negative poisson's ratio structure and optimization method based on functionally gradient |
| CN109869431A (en) * | 2019-03-25 | 2019-06-11 | 长沙理工大学 | A kind of three-dimensional anti-impact material with negative poisson's ratio characteristic |
| CN210715702U (en) * | 2019-10-16 | 2020-06-09 | 湖北汽车工业学院 | Novel negative Poisson ratio structure and two-dimensional honeycomb structure thereof |
| CN210715682U (en) * | 2019-10-16 | 2020-06-09 | 湖北汽车工业学院 | Three-dimensional negative Poisson ratio energy-absorbing filler structure |
| CN110779391A (en) * | 2019-11-20 | 2020-02-11 | 中国人民解放军军事科学院国防科技创新研究院 | Metal ceramic composite armor with negative Poisson's ratio and preparation method and application thereof |
| CN111692270A (en) * | 2020-06-22 | 2020-09-22 | 湖北汽车工业学院 | Negative Poisson ratio cell element and honeycomb structure thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116176056A (en) * | 2023-02-15 | 2023-05-30 | 中国人民解放军军事科学院系统工程研究院 | Composite material with density gradient and negative poisson ratio honeycomb structure |
| CN116176056B (en) * | 2023-02-15 | 2023-08-29 | 中国人民解放军军事科学院系统工程研究院 | Composite material with density gradient and negative poisson ratio honeycomb structure |
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