CN208187249U - A kind of compound sandwich ballistic structure - Google Patents
A kind of compound sandwich ballistic structure Download PDFInfo
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- CN208187249U CN208187249U CN201721780878.7U CN201721780878U CN208187249U CN 208187249 U CN208187249 U CN 208187249U CN 201721780878 U CN201721780878 U CN 201721780878U CN 208187249 U CN208187249 U CN 208187249U
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Abstract
The utility model provides a kind of compound sandwich ballistic structure, including compound sandwich layer, and the compound sandwich layer is by honeycomb type negative poisson's ratio structure and is filled in the intrapore polycarbonate of honeycomb type negative poisson's ratio structure and constitutes.A kind of compound sandwich ballistic structure provided by the utility model, in honeycomb type negative poisson's ratio structure and under being filled in the mutual collaboration facilitation of its intrapore polycarbonate, with low-density, high impact strength, high break resistance and good energy-absorbing damping performance, it is explosion-proof, shellproof and in terms of gather around and have broad application prospects.
Description
Technical field
The utility model relates to ballistic structure field more particularly to a kind of compound sandwich ballistic structures.
Background technique
Bulletproof composite structure is since with high-strength light, multi-part integration, designability is strong, manufacturing cost is low, exploitation
A variety of advantages such as the period is short, in advanced manufacturing fields such as military projects using more and more extensive.In recent decades, people is studied both at home and abroad
Member a large amount of research has been carried out to lightweight armor system and its ballistic performance, be dedicated to protective gear protective capacities, mobility,
Balance between operational performance three, to novel light armour material and armor structure, more stringent requirements are proposed.
Common compound sandwich ballistic structure is generally divided into out surface plate, compound sandwich layer and buffering backboard.Body pair
The penetration of compound sandwich ballistic structure with through being different from single structure metal plate or composite panel, sandwich knot in whole process
Panel, backboard and the laminboard layer of structure interact, and are mutually coupled, and the design of structure and the selection of material are to influence overall structure
An important factor for ballistic performance.
Current bulletproof composite infrastructure cost is high, weight is big, the process-cycle is long, is limited by complex model, with compound
The continuous development of ballistic structure, researcher have found that laminboard layer plays critical factor to the performance of bulletproof composite structure, because
This optimizes extremely important for the laminboard layer of bulletproof composite structure.
Summary of the invention
Utility model aims to solve existing in the prior art, bulletproof composite layer sandwich structure intensity is low, penertration resistance
The problem of performance difference provides a kind of compound sandwich ballistic structure.
A kind of compound sandwich ballistic structure provided by the utility model, including compound sandwich layer, the compound sandwich layer by
Honeycomb type negative poisson's ratio structure and the intrapore polycarbonate elastomer body for being filled in the honeycomb type negative poisson's ratio structure are constituted.
Preferably, the three-dimensional honeycomb that the honeycomb type negative poisson's ratio structure is made of the indent honeycomb type cell space unit of array
Structure；The indent honeycomb type cell space unit is the multi-faceted column structure being made of multiple seamed edge columns and side column, each described
Side column includes the upper side column and the lower side column of the two neighboring seamed edge column bottom of connection for connecting two neighboring seamed edge column top, described
Upper side column is positive V-type column, and the lower side column is inverted V type column.
Preferably, the multi-faceted column structure further includes a center column, several first connecting columns and the second connection
Column, the center column are located at the inside of the multi-faceted column structure and are arranged in parallel with the seamed edge column；Each described first
One end of connecting column is connected with the top of the center column, is connected at the other end and the center of the upper side column；Each institute
The one end for stating the second connecting column is connected with the bottom of the center column, is connected at the other end and the center of the lower side column.
Preferably, the upper re-entrant angle of the lower re-entrant angle of the upper side column and the lower side column is 60 °.
Preferably, the adjacent indent honeycomb type cell space is respectively provided at the center of the upper side column and lower side column
The fixed column that unit is connected and fixed.
Preferably, further include panel and backboard, the compound sandwich layer be fixed between the panel and backboard formed it is whole
The compound sandwich ballistic structure of body.
Preferably, the panel is boron carbide ceramics panel, and the backboard is UHMWPE fiber buffer backboard.
The utility model has the beneficial effects that: the compound sandwich ballistic structure of the utility model, in the negative Poisson of honeycomb type
It than structure and is filled under the mutual collaboration facilitation of its intrapore polycarbonate elastomer body, there is low-density, high-impact
Hit intensity, high break resistance and good energy-absorbing damping performance, it is explosion-proof, shellproof and in terms of possess it is wide
Wealthy application prospect.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of compound sandwich ballistic structure of the utility model；
Fig. 2 is the structural schematic diagram of compound sandwich layer in Fig. 1；
Fig. 3 is the structural schematic diagram of indent honeycomb type cell space unit in Fig. 2；
Fig. 4 is the honeycomb type negative poisson's ratio structure structure finished figure using 3D printing technique printing shaping；
Fig. 5 A is body-bulletproof composite structure when bullet penetration penetrates just without the bulletproof composite structure of injected plastics material
Deformation figure；
Fig. 5 B is that body-is compound anti-when the bulletproof composite structure speed of bullet penetration to injection molding epoxy resin injection molding is reduced to 0
Play the deformation figure of structure；
Fig. 5 C is body-bulletproof composite structure when the bulletproof composite structure speed of bullet penetration to injection molding TPU injection molding is reduced to 0
Deformation figure；
Fig. 5 D is that body-is compound anti-when the bulletproof composite structure speed of bullet penetration to injection molding polycarbonate injection moulded is reduced to 0
Play the deformation figure of structure；
Fig. 6 A is the speed-time curve figure of bulletproof composite structure of the bullet penetration without injected plastics material；
Fig. 6 B is the speed-time curve figure of the bulletproof composite structure of bullet penetration epoxy resin injection molding；
Fig. 6 C is the speed-time curve figure of the bulletproof composite structure of bullet penetration TPU injection molding；
Fig. 6 D is the speed-time curve figure of the bulletproof composite structure of bullet penetration polycarbonate injection moulded.
Description of symbols:
1- compound sandwich layer；2- panel；3- backboard；
11- honeycomb type negative poisson's ratio structure；111- seamed edge column；
The upper side column of 112-；Side column under 113-；114- center column；
The first connecting column of 115-；The second connecting column of 116-；117- fixed column.
Specific embodiment
It, below will be to the utility model to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Technical solution in embodiment is explicitly described, it is clear that and the embodiments are a part of the embodiments of the present invention,
Instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creation
Property labour under the premise of every other embodiment obtained, fall within the protection scope of the utility model.Unless otherwise specified, real
Apply the conventional means that technological means used in example is well known to those skilled in the art.The "upper" that is referred in the utility model,
"lower" is oriented with Fig. 2 and Fig. 3.
A kind of compound sandwich ballistic structure provided by the utility model, as shown in Figures 1 to 3, including compound sandwich layer 1, institute
Compound sandwich layer 1 is stated by honeycomb type negative poisson's ratio structure 11 and to be filled in the honeycomb type negative poisson's ratio structure 11 intrapore poly-
Carbonic acid ester elastomer is constituted.
Specifically, what the indent honeycomb type cell space unit that honeycomb type negative poisson's ratio structure 11 is arranged by multiple arrays formed
Three-dimensional honeycomb structure, it is embedding in polycarbonate elastomer body and be filled in the hole of indent honeycomb type cell space unit, injection molding can be passed through
Polycarbonate elastomer body is filled in the hole of indent honeycomb type cell space unit by technique, forms compound sandwich layer 1.Wherein,It is poly- Carbonic acid ester elastomer is to be full of to polymerize the structural body to be formed in a large amount of polycarbonate powders in honeycomb type negative poisson's ratio structure.
Honeycomb type negative poisson's ratio structure is to absorb impact energy using its own auxetic effect and honeycomb energy absorption characteristics, real
Its existing stronger shock resistance effect.Positive Poisson's ratio, inner concave shape honeycomb is macroscopically all being presented in generally conventional honeycomb
Generally in negative poisson's ratio, traditional honeycomb compresses under Impact Load, and in the side vertical with impact load
It is flowed around from the position that is hit upwards, and in negative poisson's ratio honeycomb-type structural when impact direction bears to compress, in side
It shrinks, and from four circumferential impact sites flowings, to make that the local density of negative poisson's ratio structure increases, modulus mentions rapidly
It is high.The utility model is the filled polycarbonate elastomer in the hole of honeycomb type negative poisson's ratio structure 11, polycarbonate elastomer
Body toughness with higher and elasticity modulus, when by penetration, polycarbonate elastomer body due to negative poisson's ratio honeycomb to
Interior compression force increases the density at penetration position, modulus raising from four circumferential impact portion aggregations, enhancing penetration position
Intensity effectively improves the capability of resistance to penetration of honeycomb type negative poisson's ratio structure, since polycarbonate elastomer body is a kind of high tenacity, height
The material of elasticity modulus, during by penetration, on the one hand polycarbonate molecule is assembled to penetration position, enhances penetration portion
Position intensity can further improve the energy-absorbing function of honeycomb type negative poisson's ratio structure on the other hand by compression energy-absorbing, improve honeycomb type
The impact resistance and anti-shear ability of negative poisson's ratio structure, therefore, a kind of shellproof knot of compound sandwich provided by the utility model
Structure, in negative poisson's ratio honeycomb sandwich structure and the mutual collaboration facilitation for being filled in its intrapore polycarbonate elastomer body
Under, there is low-density, high impact strength, high break resistance and good energy-absorbing damping performance.
Whether there is or not the differences of injection molding and injected plastics material to have to the ballistic performance of compound sandwich ballistic structure in compound sandwich layer 1
Large effect, the compound sandwich ballistic structure bulletproof effect after injection molding are greatly improved compared with no injection structure, Ke Yigeng
It is effective that body is prevented to penetrate, polycarbonate be better than in terms of improving anti-penetration properties as injected plastics material epoxy resin with
TPU, TPU are better than epoxy resin in terms of improving anti-penetration properties as injected plastics material.
Based on the above embodiment, in the present embodiment, referring to figs. 2 and 3, the honeycomb type negative poisson's ratio structure 11 is by array
Indent honeycomb type cell space unit composition three-dimensional honeycomb structure, be by indent honeycomb type cell space unit arrangement group as shown in Figure 3
The hexahedron structure of synthesis；As shown in Fig. 2, the indent honeycomb type cell space unit is by multiple seamed edge columns 111 and side column structure
At multi-faceted column structure, each side column includes upper side column 112 and the connection for connecting 111 top of two neighboring seamed edge column
The lower side column 113 of two neighboring 111 bottom of seamed edge column, the upper side column 112 are positive V-type column, and the lower side column 113 is inverted V type
Column.The multi-faceted column structure further includes a center column 114, several first connecting columns 115 and the second connecting column 116,
The center column 114 is located at the inside of the multi-faceted column structure, is most preferably placed on center column 114 described
On the vertical perpendicular bisector of multi-faceted column structure, it is arranged in parallel with the seamed edge column 111；The one of each first connecting column 115
End is connected with the top of the center column 114, is connected at the other end and the center of the upper side column 112；Each described
One end of two connecting columns 116 is connected with the bottom of the center column 114, the center of the other end and the lower side column 113
Place is connected.
Indent honeycomb type cell space unit has complicated tridimensional network, and on the one hand a large amount of holes can facilitate polycarbonate
Injection molding, it is tough on the other hand can to enhance the Young's modulus of compound sandwich ballistic structure, modulus of shearing, yield strength and fracture
Property.
Based on the above embodiment, in the present embodiment, with reference to Fig. 3, the lower re-entrant angle and the lower side column of the upper side column 112
113 upper re-entrant angle is 60 °.If re-entrant angle is excessive, the hole in indent honeycomb type cell space unit is larger, and structural strength is weaker；
If re-entrant angle is too small, the hole in indent honeycomb type cell space unit is too small, is unfavorable for the injection molding of polycarbonate, increases injection molding
Technology difficulty, and the relative density that will cause polycarbonate is larger.
Based on the above embodiment, it in the present embodiment, is respectively equipped at the center of the upper side column 112 and lower side column 113 solid
Fixed column 117 is connected and fixed for the adjacent indent honeycomb type cell space unit.
It based on the above embodiment, further include panel 2 and backboard 3, the compound sandwich layer 1 with reference to Fig. 1 in the present embodiment
It is fixed between the panel 2 and backboard 3 and forms whole compound sandwich ballistic structure.Specifically, panel 2 and backboard 3 pass through
The form of seamless splicing is separately fixed at compound sandwich layer 1 on the front and back, plays the role of compound penertration resistance.
Based on the above embodiment, in the present embodiment, the panel 2 is boron carbide ceramics panel, and the backboard is UHMWPE
Fiber buffer backboard.Boron carbide ceramics panel hardness with higher, the first layer as compound sandwich ballistic structure are protected, bullet
Deformation, erosion and Fragmentation Phenomena are produced after head high-speed impenetrating boron carbide ceramics panel, when quality occurs centainly major diameter
Change, deformation bullet is colliding initial stage extruding honeycomb type negative poisson's ratio structure 11 with compound sandwich layer 1, increases since bullet deforms
Bullet target contact area, increase that bullet hits compound sandwich layer initial stage opens hole resistance, therefore reduces elastic material material
Together with pressure of negative poisson's ratio structure under the conditions of generating high strain-rate, destruction is cut, and UHMWPE fiber buffer backboard can
Preferable buffering effect is played while providing certain supporting role for compound sandwich layer 1, panel 2 and backboard 3 make compound
Sandwich ballistic structure has obtained significant increase on explosion-proof and ballistic performance.
Based on the above embodiment, in the present embodiment, the panel 2 with a thickness of 3mm, the thickness of the compound sandwich layer 1
For 10.44mm, the backboard 3 with a thickness of 2mm.Honeycomb type negative poisson's ratio structure 11 can be used TC4 Titanium Powder powder material by
3D printing technique is process, and can further enhance the intensity, corrosion resisting property and heat resistance of compound sandwich ballistic structure.
A kind of compound sandwich ballistic structure provided by the utility model, use is low cost, low-density, light-weight material
Material, structure is simple, small in size, realizes lightweight and low processing cost, while having high rigidity, high intensity, high tenacity, high energy-absorbing
Rate and without performances such as secondary lethal effects, it is explosion-proof, shellproof and in terms of gather around and have broad application prospects.
Compound sandwich ballistic structure provided by the embodiment of the utility model the production method is as follows: it is negative to draw the honeycomb type
11 model of Poisson's ratio structure, using TC4 titanium alloy powder as raw material, using 3D printing technique machine-shaping, to the molding bee
Injection molding elastic material forms compound sandwich layer 1 in the hole of socket type negative poisson's ratio structure 11, and the compound sandwich layer 1 is passed through nothing
The form that seam is glued is fixed between boron carbide ceramics panel and UHMWPE fiber buffer backboard, and passes through bound edge for compound sandwich
Layer 1, panel 2 and backboard 3 is seamless is glued together to form whole compound sandwich ballistic structure.
11 structural model of honeycomb type negative poisson's ratio structure is drawn in three-dimensional graphics software SolidWorks, is then saved as
STL formatted file imports equipment printing system, and setting parameter is processed, and utilizes 3D printing technique --- selective laser
Melt (SLM) machine-shaping, molding finished product as shown in figure 4, due in honeycomb type negative poisson's ratio structure 11 contain a large amount of holes,
It fills injection elastic material into its hole from injection (mo(u)lding) machine by Shooting Technique, forms compound sandwich layer 1.3D printing technique
As a kind of rapid shaping technique, there is tradition machinery processing not have in terms of complicated shaping structures and processing efficiency excellent
Gesture, the process-cycle is short, is not limited by complex model, and can save high mould development expense.
Embodiment 1
11 model of honeycomb type negative poisson's ratio structure is drawn to process using TC4 titanium alloy powder as raw material using 3D printing technique
Molding is molded polycarbonate into the hole of the molding honeycomb type negative poisson's ratio structure 11 and forms compound sandwich layer 1, by institute
Compound sandwich layer 1 is stated to be fixed on by way of seamless splicing between boron carbide ceramics panel and UHMWPE fiber buffer backboard,
Form whole compound sandwich ballistic structure.
Comparative example 1
Production method with embodiment 1, the difference is that: to the hole of the molding honeycomb type negative poisson's ratio structure 11
Interior injection molded thermoplastic's elastic polyurethane body rubber (TPU).
Comparative example 2
Production method with embodiment 1, the difference is that: to the hole of the molding honeycomb type negative poisson's ratio structure 11
Interior injection molding epoxy resin.
Comparative example 3
Production method with embodiment 1, the difference is that: to the hole of the molding honeycomb type negative poisson's ratio structure 11
It is not molded any material inside.
Bullet penetration experiment is carried out to the compound sandwich ballistic structure for making molding embodiment 1 and comparative example 1~3: benefit
With FEM-software ANSYS/LS-DYNA to during projectile penetrating compound sandwich ballistic structure details and bullet-proof mechanism carry out
The variation of body speed and energy in compound sandwich ballistic structure is quantitatively assessed in analysis, probes into bulletproof composite after injection molding
The ballistic performance of structure entirety.
Test example
1, experimental material
Body selects 51 formula 7.62mm pistol cartridge bullets in " the police flak jackets of GA141-2010 ", by steel by first and lead for retractable pencil two
Part forms.Bullet diameter is 7.80mm, overall length 13.80mm, and weight 5.6g integrally applies the initial velocity of 515m/s to bullet,
Its constant level is set to inject bulletproof composite structure.The size of bulletproof composite structure is 29.22mm × 29.22mm × 15.44mm,
Middle boron carbide ceramics thickness 3mm, indent honeycomb type negative poisson's ratio structure and injection molding thickness 10.44mm, UHMWPE fiber thickness
2mm.Backing is having a size of 40mm × 40mm × 10mm, and material is neoprene, for simulating trunk.It utilizes
SolidWorks three-dimensional graphics software draws geometrical model, and finite element grid is completed in Hypermesh pre-processing software
It divides.For positive penetration, since body, target plate are symmetrical structure, in order to improve computational efficiency, 1/4 foundation of body, target plate is taken
Model applies corresponding symmetry constraint in the plane of symmetry.In terms of grid dividing, body, boron carbide ceramics panel, UHMWPE fiber are slow
Backboard and backing are rushed using hexahedral element, compound sandwich layer 1 uses tetrahedron element.
2, numerical simulation and result
Model is solved using LS-DYNA solver, and is post-processed by LS-PrePost software to data, body with
The initial velocity Penetration bulletproof composite structure of 515m/s probes into body body during penetration compound sandwich ballistic structure
It changes with time with the deformation and body residual velocity of compound sandwich ballistic structure with kinetic energy.
Body is in penetration different composite ballistic structure body-bulletproof composite structure deformation respectively such as Fig. 5 A (no note
Modeling), Fig. 5 B (epoxy resin injection molding), Fig. 5 C (TPU injection molding), Fig. 5 D (polycarbonate injection moulded) it is shown, wherein Fig. 5 B, C, D are hit by a bullet
Body speed is reduced to 0 just, the speed-time curve of body such as Fig. 6 A (no injection molding), Fig. 6 B (epoxy resin injection molding), Fig. 6 C (TPU
Injection molding), shown in Fig. 6 D (polycarbonate injection moulded).
It can be seen that from Fig. 5 A, B, C, D and inject epoxy resin, TPU or polycarbonate in honeycomb type negative poisson's ratio structure 11
Afterwards, body produces the upset, deformation become apparent and broken in 1 Penetration of compound sandwich layer, and compound sandwich layer 1 generates
More apparent tensile deformation, the fibrous layer of UHMWPE fiber buffer backboard and the cup depth of back lining materials are also brighter
It is aobvious.By Fig. 6 B, C, D it is found that bullet speed drop in the compound sandwich ballistic structure of injection epoxy resin, TPU or polycarbonate
Time difference used is obvious when being 0, respectively 80 μ s, 66 μ s and 54 μ s；The honeycomb type negative poisson's ratio structure and ring of TPU injection molding
The honeycomb type negative poisson's ratio structure of oxygen resin injection molding improves 17.5% compared to bulletproof effect, and the honeycomb type of polycarbonate injection moulded is negative
Poisson's ratio structure bulletproof effect compared with the honeycomb type negative poisson's ratio structure that epoxy resin is molded improves 32.5%, polycarbonate
Injection molding honeycomb type negative poisson's ratio structure bulletproof effect compared with TPU is molded honeycomb type negative poisson's ratio structure improves 18.2%.Bullet
During penetration different composite sandwich ballistic structure opposite sliding occurs for head distance between steel back first and lead for retractable pencil also has very
It is different, it is smaller with respect to the distance of sliding in without injection molding honeycomb type negative poisson's ratio structure 11, and in the injection molding negative Poisson of honeycomb type
Than biggish opposite sliding, the lead for retractable pencil especially in polycarbonate injection moulded honeycomb type negative poisson's ratio structure 11 have occurred in structure 11
Serious abrasion and mass deficit are produced, this demonstrate the case where compound sandwich ballistic structure panel and backboard remain unchanged
Under, whether there is or not the differences of injection molding and injected plastics material to have to the ballistic performance of bulletproof composite structure in honeycomb type negative poisson's ratio structure 11
The bulletproof effect of large effect, the compound sandwich ballistic structure after injection molding is greatly improved compared with no injection structure, can be with
More effectively prevent body penetrate, polycarbonate be better than in terms of improving anti-penetration properties as injected plastics material epoxy resin with
TPU, TPU are better than epoxy resin in terms of improving anti-penetration properties as injected plastics material.
The bulletproof effect of compound sandwich ballistic structure after injection molding is greatly improved compared with no injection structure, main cause
It is that deformation, erosion and Fragmentation Phenomena are produced after bullet high-speed impenetrating boron carbide ceramics panel, when quality occurs one to major diameter
Fixed change, deformation bullet are colliding initial stage extrusion cladding laminboard layer with injection molding compound sandwich layer, are making injected plastics material together with negative pool
Pine generates pressure under the conditions of high strain-rate than structure, breaks bad, plays target contact area because bullet deformation increases during this, increases
Added bullet shock compound sandwich layer initial stage opens hole resistance, while the support that the presence of backboard is certain to laminboard layer, so that note
Compound sandwich layer tensile property after modeling greatly improves.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement；And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (8)
1. a kind of compound sandwich ballistic structure, which is characterized in that including compound sandwich layer, the compound sandwich layer is born by honeycomb type
Poisson's ratio structure and the intrapore polycarbonate elastomer body for being filled in the honeycomb type negative poisson's ratio structure are constituted.
2. compound sandwich ballistic structure according to claim 1, which is characterized in that the honeycomb type negative poisson's ratio structure by
The three-dimensional honeycomb structure of the indent honeycomb type cell space unit composition of array；
The indent honeycomb type cell space unit is the multi-faceted column structure being made of multiple seamed edge columns and side column, each side
Side column includes the upper side column for connecting two neighboring seamed edge column top and the lower side column for connecting two neighboring seamed edge column bottom, it is described on
Side column is positive V-type column, and the lower side column is inverted V type column.
3. compound sandwich ballistic structure according to claim 2, which is characterized in that the multi-faceted column structure further includes one
A center column, several first connecting columns and the second connecting column, the center column are located at the interior of the multi-faceted column structure
It portion and is arranged in parallel with the seamed edge column；One end of each first connecting column is connected with the top of the center column,
It is connected at the other end and the center of the upper side column；One end of each second connecting column and the bottom phase of the center column
Even, it is connected at the other end and the center of the lower side column.
4. compound sandwich ballistic structure according to claim 3, which is characterized in that the lower re-entrant angle of the upper side column and described
The upper re-entrant angle of lower side column is 60 °.
5. compound sandwich ballistic structure according to claim 4, which is characterized in that the center of the upper side column and lower side column
Place is respectively provided with the fixed column that the adjacent indent honeycomb type cell space unit is connected and fixed.
6. described in any item compound sandwich ballistic structures according to claim 1~5, which is characterized in that further include panel and back
Plate, the compound sandwich layer, which is fixed on, forms whole compound sandwich ballistic structure between the panel and backboard.
7. compound sandwich ballistic structure according to claim 6, which is characterized in that the panel is boron carbide ceramics face
Plate, the backboard are UHMWPE fiber buffer backboard.
8. compound sandwich ballistic structure according to claim 7, which is characterized in that the panel with a thickness of 3mm, it is described
Compound sandwich layer with a thickness of 10.44mm, the backboard with a thickness of 2mm.
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| CN201721780878.7U CN208187249U (en) | 2017-12-19 | 2017-12-19 | A kind of compound sandwich ballistic structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108050891A (en) * | 2017-12-19 | 2018-05-18 | 北京理工大学 | A kind of compound sandwich ballistic structure |
| US20220332081A1 (en) * | 2021-04-16 | 2022-10-20 | Amrita Vishwa Vidyapeetham | Optimized Engineering Structures with Auxetic Cells |
-
2017
- 2017-12-19 CN CN201721780878.7U patent/CN208187249U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108050891A (en) * | 2017-12-19 | 2018-05-18 | 北京理工大学 | A kind of compound sandwich ballistic structure |
| CN108050891B (en) * | 2017-12-19 | 2023-10-31 | 北京理工大学 | Composite sandwich bulletproof structure |
| US20220332081A1 (en) * | 2021-04-16 | 2022-10-20 | Amrita Vishwa Vidyapeetham | Optimized Engineering Structures with Auxetic Cells |
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