CN112696983A - Gradient type indent honeycomb explosion-proof construction - Google Patents
Gradient type indent honeycomb explosion-proof construction Download PDFInfo
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- CN112696983A CN112696983A CN202011530575.6A CN202011530575A CN112696983A CN 112696983 A CN112696983 A CN 112696983A CN 202011530575 A CN202011530575 A CN 202011530575A CN 112696983 A CN112696983 A CN 112696983A
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- China
- Prior art keywords
- gradient
- negative poisson
- explosion
- honeycomb
- type
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H5/00—Armour; Armour plates
- F41H5/02—Plate construction
- F41H5/04—Plate construction composed of more than one layer
- F41H5/0442—Layered armour containing metal
- F41H5/0457—Metal layers in combination with additional layers made of fibres, fabrics or plastics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/041—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a gradient type concave honeycomb explosion-proof structure, which comprises: the gradient type negative Poisson ratio structure layer is arranged between the panel and the back plate, the panel and the back plate are mutually coupled with the gradient type negative Poisson ratio structure, the structural integrity and strength can be improved, the gradient type negative Poisson ratio structure has stronger impact resistance than a common single-layer negative Poisson ratio structure, has low surface density, high impact strength, high anti-explosion property and good energy absorption and vibration reduction performance, and has wide application prospects in the aspects of explosion prevention, emergency rescue protection, light armor and the like.
Description
Technical Field
The invention relates to the technical field of explosion-proof structures, in particular to a gradient type concave honeycomb 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 a gradient type concave honeycomb anti-explosion structure which is used for solving the problems of heavy weight, poor anti-explosion performance and low energy absorption efficiency of anti-explosion equipment in the prior art.
The invention provides a gradient type concave honeycomb explosion-proof structure, which comprises: the gradient type negative Poisson ratio structural layer is arranged between the panel and the back plate.
According to the gradient type concave honeycomb explosion-proof structure provided by the invention, the gradient type negative Poisson ratio structure layer comprises at least two layers of negative Poisson ratio structures, and the negative Poisson ratio structures are formed by horizontally arraying cell units and axially stretching the cell units.
According to the gradient type concave honeycomb anti-explosion structure provided by the invention, the negative Poisson ratio structure is a honeycomb-shaped negative Poisson ratio structure.
According to the gradient-type concave honeycomb explosion-proof structure provided by the invention, the cell body units of the negative Poisson's ratio structures at different levels have the same or different or partially same size.
According to the gradient-type concave honeycomb anti-explosion structure provided by the invention, the cell units are concave cell units.
According to the gradient-type concave honeycomb explosion-proof structure provided by the invention, the concave angle angles of the cell body units of the negative Poisson's ratio structures at different levels are the same or different or partially the same.
According to the gradient type concave honeycomb anti-explosion structure provided by the invention, the panel is a boron carbide ceramic panel, and the back plate is an UHMWPE fiber buffer back plate.
According to the gradient type concave honeycomb explosion-proof structure provided by the invention, the gradient type negative Poisson ratio structural layer is made of TC4 titanium alloy powder as a raw material.
According to the gradient type concave honeycomb explosion-proof structure provided by the invention, the gradient type negative Poisson's ratio structural layer is processed and formed by adopting a 3D printing technology.
According to the gradient type concave honeycomb anti-explosion structure provided by the invention, the panel and the back plate are mutually coupled with the gradient type negative Poisson ratio structure, the structural integrity and strength can be improved, the gradient type negative Poisson ratio structure has stronger impact resistance than a common single-layer negative Poisson ratio structure, has low surface density, high impact strength, high anti-explosion characteristic and good energy absorption and vibration reduction performance, and has wide application prospects in the aspects of explosion prevention, emergency rescue protection, light armor 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 a gradient-type concave honeycomb explosion-proof structure provided by the invention;
FIG. 2 is a schematic structural diagram of a gradient-type negative Poisson's ratio structural layer provided by the present invention;
reference numerals:
1: a panel; 2: gradient type negative poisson's ratio junction 3: a back plate;
a layer structure;
4: a soma unit;
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.
The following describes a gradient-type concave honeycomb explosion-proof structure of the present invention with reference to fig. 1-2, including: the structural layer comprises a panel 1, a gradient type negative Poisson ratio structural layer 2 and a back plate 3, wherein the gradient type negative Poisson ratio structural layer 2 is arranged between the panel 1 and the back plate 3. The connection may be by gluing, bolting, welding, etc.
The gradient type negative Poisson ratio structure layer 2 comprises at least two layers of negative Poisson ratio structures, a partition plate is arranged between each layer of negative Poisson ratio structure, the direction of the partition plate is parallel to the panel 1 and the back plate 3, the directions of the at least two layers of negative Poisson ratio structures are parallel to the panel 1 and the back plate 3, and the negative Poisson ratio structure is formed by horizontally arraying and axially stretching cell units 4. The soma units 4 of the same layer are identical.
The negative poisson's ratio structure is a honeycomb-shaped negative poisson's ratio structure. The honeycomb 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 cell units 4 of the negative poisson ratio structure of different levels are the same or different or partially the same in size. That is, the cell units 4 of different levels do not affect each other, the sizes are set independently, the cell units of the same level are the same, and the cell units of different levels and the cell units of other levels may have the same size, may be different, or may be partially the same and partially different.
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 angle angles in the cell units 4 of the negative poisson ratio structures in different levels are the same or different or partially the same. That is to say, the cell units 4 in different levels do not affect each other, the concave angle angles are set independently, the cell units in the same level are the same, and the concave angle angles of the cell units in different levels and the cell units in other levels can be the same, different, or partially the same.
The faceplate 1 is a boron carbide ceramic faceplate, and the backboard 3 is an UHMWPE fiber buffer backboard. The effect of shock waves generated by explosion on an explosion-proof structure is different from that of a single-structure metal plate or a composite material plate, and the panel 1, the back plate 3 and the gradient type negative Poisson ratio structural layer 2 interact and are coupled with each other in the whole process, so that the structural integrity and strength can be improved.
The gradient type negative Poisson ratio structure layer 2 has stronger impact resistance by arranging a plurality of layers of negative Poisson ratio structures and interaction of each layer. Through experimental comparison, the gradient type negative Poisson ratio structural layer 2 is superior to a single-layer negative Poisson ratio structural layer in the aspects of shock wave attenuation rate, quality, energy absorption, specific energy absorption and the like.
The gradient type negative Poisson ratio structural layer 2 is made of TC4 titanium alloy powder as a raw material.
The gradient type negative Poisson ratio structural layer 2 is processed and formed by a 3D printing technology.
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 (9)
1. A gradient-type concave honeycomb explosion-proof structure is characterized by comprising: the gradient type negative Poisson ratio structural layer is arranged between the panel and the back plate.
2. The gradient-type concave honeycomb explosion-proof structure of claim 1, wherein the gradient-type negative poisson's ratio structural layer comprises at least two layers of negative poisson's ratio structures, and the negative poisson's ratio structures are formed by horizontally arraying cell units and axially stretching the cell units.
3. The gradient-type dimpled honeycomb explosion-proof structure according to claim 2, wherein the negative poisson's ratio structure is a honeycomb-shaped negative poisson's ratio structure.
4. The gradient-type dimpled honeycomb explosion-proof structure according to claim 3, wherein the cell body unit sizes of the negative Poisson ratio structures of different levels are the same or different or partially the same.
5. The gradient-type dimpled honeycomb blast-proof structure according to claim 3, wherein the cell units are dimpled cell units.
6. The gradient-type concave-convex honeycomb explosion-proof structure according to claim 5, wherein the cell body unit concave angle angles of the negative Poisson ratio structures in different levels are the same or different or partially the same.
7. The gradient cove honeycomb blast resistant construction according to claim 1, wherein said face sheet is a boron carbide ceramic face sheet and said backing sheet is a UHMWPE fiber buffer backing sheet.
8. The gradient-type internally concave honeycomb explosion-proof structure of claim 1, wherein the gradient-type negative poisson's ratio structural layer is made of TC4 titanium alloy powder as a raw material.
9. The gradient-type dimpled honeycomb explosion-proof structure according to claim 8, wherein the gradient-type negative poisson's ratio structural layer is formed by a 3D printing technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011530575.6A CN112696983A (en) | 2020-12-22 | 2020-12-22 | Gradient type indent honeycomb explosion-proof construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011530575.6A CN112696983A (en) | 2020-12-22 | 2020-12-22 | Gradient type indent honeycomb explosion-proof construction |
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| Publication Number | Publication Date |
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| CN112696983A true CN112696983A (en) | 2021-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011530575.6A Pending CN112696983A (en) | 2020-12-22 | 2020-12-22 | Gradient type indent honeycomb explosion-proof construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112013718A (en) * | 2020-07-14 | 2020-12-01 | 清华大学苏州汽车研究院（相城） | Coupling bionic anti-explosion energy-absorbing plate and human body protection device or automobile part |
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| US20100119792A1 (en) * | 2008-11-10 | 2010-05-13 | Zheng-Dong Ma | Three-dimensional auxetic structures and applications thereof |
| CN102717542A (en) * | 2012-06-29 | 2012-10-10 | 大连理工大学 | Bulletproof sandwich plate |
| CN104864016A (en) * | 2014-02-21 | 2015-08-26 | 广州汽车集团股份有限公司 | Vibration reducer assembly and buffer block structure thereof |
| CN108050891A (en) * | 2017-12-19 | 2018-05-18 | 北京理工大学 | A kind of compound sandwich ballistic structure |
| 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 |
| CN109866939A (en) * | 2017-12-01 | 2019-06-11 | 空中客车操作有限责任公司 | Deformable auxetic structure and manufacturing method |
| 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 |
-
2020
- 2020-12-22 CN CN202011530575.6A patent/CN112696983A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20100119792A1 (en) * | 2008-11-10 | 2010-05-13 | Zheng-Dong Ma | Three-dimensional auxetic structures and applications thereof |
| CN102717542A (en) * | 2012-06-29 | 2012-10-10 | 大连理工大学 | Bulletproof sandwich plate |
| CN104864016A (en) * | 2014-02-21 | 2015-08-26 | 广州汽车集团股份有限公司 | Vibration reducer assembly and buffer block structure thereof |
| CN109866939A (en) * | 2017-12-01 | 2019-06-11 | 空中客车操作有限责任公司 | Deformable auxetic structure and manufacturing method |
| CN108050891A (en) * | 2017-12-19 | 2018-05-18 | 北京理工大学 | A kind of compound sandwich ballistic structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112013718A (en) * | 2020-07-14 | 2020-12-01 | 清华大学苏州汽车研究院（相城） | Coupling bionic anti-explosion energy-absorbing plate and human body protection device or automobile part |
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Application publication date: 20210423 |
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