CN202742715U - Sandwiched bulletproof sandwich plate - Google Patents
Sandwiched bulletproof sandwich plate Download PDFInfo
- Publication number
- CN202742715U CN202742715U CN 201220315928 CN201220315928U CN202742715U CN 202742715 U CN202742715 U CN 202742715U CN 201220315928 CN201220315928 CN 201220315928 CN 201220315928 U CN201220315928 U CN 201220315928U CN 202742715 U CN202742715 U CN 202742715U
- Authority
- CN
- China
- Prior art keywords
- arm
- born
- same parents
- cell element
- core body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a sandwiched bulletproof sandwich plate. The sandwich plate comprises an upper faceplate, a lower faceplate and a core body, wherein the core body is formed by multi-layer base cells which are crosswise arranged according to a center rule; and each base cell is hexagonal, the upper edge and the lower edge of each base cell are in the shape of symmetrical forked tails, the upper edge and the lower edge of each base cell are isometric horizontal cell arms h, the left and right four edges of each base cell are isometric slantwise cell arms l, inclined angles lambda are formed between the horizontal cell arms h and the slantwise cell arms 1, the lambda is less than 90 degrees, and the relationship between the length of each horizontal cell arm h and the lengths of each slantwise cell arm l meets the formula that h is more than 21*cosine lambda. When the sandwiched bulletproof sandwich plate is subjected to action of an impulse load of a bullet, the core body has a negative poisson ratio property, and materials can be gathered to the zone of action of the bullet, so that the local intensity of the core body can be improved, and a plate piece, particularly the core body, can not be easily shot through by the bullet. According to the sandwiched bulletproof sandwich plate, not only can the advantage of high energy absorption capability of the sandwiched bulletproof sandwich plate be kept, but also the sandwiched bulletproof sandwich plate can be locally intensified when being subjected to the action of the local impact load, so that the impact load resistance of the sandwiched bulletproof sandwich plate can be improved.
Description
Technical field
The utility model relates to a kind of shellproof Sandwich Plates, particularly the shellproof sandwich plate of a kind of sandwich.
Background technology
The sandwich sandwich plate is combined by compact metal panel and high porosity metal core body, because of the advantage that its quality is light, energy-absorbing efficient is high, more and more be subject to the attention of academia and engineering circles, particularly be used widely in high-tech areas such as aerospace flight vehicle, bullet train and high-speed ships.
Existing sandwich sandwich plate core body is comprised of common many micropore metals structure or foam metal material mostly, and this class core body perpendicular to can expand by force direction, namely shows positive Poisson ratio when being compressed load.Poisson's ratio is to cover Poisson by French mathematician west to gain the name, the ratio of expression material transverse strain and longitudinal strain.Poisson's ratio is on the occasion of meaning that sandwich plate is when being subject to the bullet impact loading, be hit the position material can to around flow, in addition low characteristics of the intensity of multi-cellular structure own, in case metal decking destroys, personnel or the equipment to the back damages whole plate with regard to being easy to be penetrated by bullet.
At occurring in nature, the Poisson's ratio of most of material all be on the occasion of, scope is between 0 ~ 0.5, wherein the overwhelming majority is all between 0.2 ~ 0.4.Yet occurring in nature also exists minority to have the material of negative poisson ' s ratio, and for example the Poisson's ratio of α-cristobalite is about-0.16.Negative poisson's ratio material has special microstructure and peculiar mechanical property than common material, during its Tensile, laterally expands in the elastic range; By compression the time, laterally shrink on the contrary.The auxetic materials because this special mechanical characteristic, negative poisson's ratio material are otherwise known as.The negative poisson ' s ratio characteristic of material comes from the special micro-structural of material more.Since Lakes in 1987 has prepared Poisson's ratio first for since-0.7 the indent foam structure foam, have been found that so far and prepared the auxetic polymers of multiple microstructure and deformation mechanism, comprise that mainly cellular draws swollen structure, draws swollen composite and molecule auxetic materials.
The negative poisson ' s ratio phenomenon is so that auxetic materials has a lot of peculiar mechanical properties, as modulus of shearing and the fracture toughness of material strengthen, resistance to indentation increases, synclastic curvature deformational behavior etc.This is so that this kind material is compared tool in a lot of fields with conventional material has great advantage.
Summary of the invention
The problems referred to above that exist for solving prior art, the utility model will design a kind of shellproof sandwich plate of sandwich that plate antithetical phrase bullet percussion has stronger resistance capabilities that strengthens.
To achieve these goals, the technical solution of the utility model is as follows: the shellproof sandwich plate of a kind of sandwich, comprise top panel, lower panel and core body, and described core body upper surface is connected with top panel, lower surface is connected with lower panel; Described top panel and lower panel are the thick plate of 0.5 ~ 2mm;
Described core body is formed by the according to certain rules cross arrangement of multilayer cell element;
Described cell element is hexagon, be up and down symmetrical swallowtail shape, two limits are that isometric horizontal born of the same parents' arm h, left and right sides four edges are isometric oblique born of the same parents' arm l up and down, horizontal born of the same parents' arm h and tiltedly have included angle X and λ＜90 ° between born of the same parents' arm l satisfies formula h between the length of the length of horizontal born of the same parents' arm h and oblique born of the same parents' arm l〉2lcos λ;
Described certain rule is: oblique born of the same parents' arm l of the adjacent two cell element bottoms of ground floor just in time consists of two oblique born of the same parents' arm l on second layer cell element top, and the intersection point line of the oblique born of the same parents' arm of the adjacent two cell element top oblique born of the same parents' arm l and bottom of ground floor l just in time consists of horizontal born of the same parents' arm h on second layer cell element top; Horizontal born of the same parents' arm h on the 3rd layer of cell element top is horizontal born of the same parents' arm h of ground floor cell element bottom, and oblique born of the same parents' arm l on the 3rd layer of adjacent two cell element top just in time consists of two oblique born of the same parents' arm l of second layer cell element bottom; The rest may be inferred, consists of the indent alveolate texture of multilayer cross arrangement.
Described cell element size: tiltedly born of the same parents' arm l is 2.5 ~ 5mm, and horizontal born of the same parents' arm h is 5 ~ 10mm, and tiltedly the thickness t of born of the same parents' arm l and horizontal born of the same parents' arm h is 0.2 ~ 1mm, and included angle X is 30 ~ 75 °.
The thickness of described core body is determined that by the number of plies of cell element width is determined by the number of every layer of cell element.
Described connected mode is bonding or welding.
Compared with prior art, the utlity model has following beneficial effect:
1, the utility model is when being subject to the bullet impact loading, core body performance negative poisson ' s ratio character, material can be assembled to the bullet zone of action, thereby so that core body local strength increase, prevent plate especially core body penetrated easily by bullet and wear.
2, because core body of the present utility model is the indent alveolate texture that is made of the cell element with negative poisson ' s ratio characteristic, both kept the strong advantage of sandwich sandwich plate energy absorption capability, simultaneously make again it that local strengthening occurs when being subjected to the local assault load, increased the resistance capabilities of sandwich sandwich plate impact loading.
Description of drawings
Fig. 1 is the 3-D view of negative poisson ' s ratio core sandwich plate described in the utility model.
Fig. 2 is negative poisson ' s ratio core front view.
Fig. 3 is Cellular structure figure and main design variable thereof.
Fig. 4 is that the negative poisson ' s ratio core is subjected to the front deformation pattern figure of concentrfated load.
Fig. 5 is that the negative poisson ' s ratio core is subjected to deformation pattern figure after the concentrfated load.
Fig. 6 is the arrangement mode figure of cell element.
The double-deck Cellular structure 3-D view of Fig. 7 for being connected to form by single cell element.
Fig. 8 is multilayer Cellular structure 3-D view.
Fig. 9 is the sandwich plate of six layers of cell element.
Figure 10 is the sandwich plate of 14 layers of cell element.
Figure 11 is deformation pattern figure before the regular-type foam metallic core is impacted by bullet.
Figure 12 is deformation pattern figure after the regular-type foam metallic core is impacted by bullet.
Figure 13 is deformation pattern figure before the negative poisson ' s ratio core is impacted by bullet.
Figure 14 is deformation pattern figure after the negative poisson ' s ratio core is impacted by bullet.
Figure 15 is deformation pattern figure before regular-type foam metallic core sandwich plate is impacted by bullet.
Figure 16 is deformation pattern figure after regular-type foam metallic core sandwich plate is impacted by bullet.
Figure 17 is that the negative poisson ' s ratio core sandwich plate is subjected to the front deformation pattern figure of concentrfated load.
Figure 18 is that the negative poisson ' s ratio core sandwich plate is subjected to deformation pattern figure after the concentrfated load.
Among the figure: 1, top panel, 2, lower panel, 3, core body.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.The utility model is a kind of sandwich sandwich plate with negative poisson ' s ratio core body 3.Compare with legacy cellular material, foamed material, negative poisson's ratio material has special mechanical property.
Under the different loads effect, the negative poisson ' s ratio structure can show different features.The distinctive mechanical characteristics of negative poisson ' s ratio structure comprises material local strengthening effect, synclastic curvature distortion etc.
Fig. 4, Fig. 5 have shown the deformation pattern of negative poisson ' s ratio structure described in the utility model under the local assault load, and this structure can shrink simultaneously in the load direction and perpendicular to this direction when certain direction local compression.This phenomenon causes the material beyond the loaded area also can assemble to load point, so that the intensity of this region material, rigidity all can increase, thereby to the larger hindrance function of local shock loading generation.
Fig. 1 is negative poisson ' s ratio core body 3 sandwich plate 3-D views of the present utility model.The utility model is comprised of top panel 1, lower panel 2 and core body 3, between top panel 1 and core body 3 and core body 3 and the lower panel 2 by bonding or be welded to connect.The matrix material that consists of top panel 1, lower panel 2 and core body 3 can be diversified, is not limited to metal material, to satisfy the different requirements in different application field.Fig. 2 is negative poisson ' s ratio core body 3 structure front views.
Cellular structure shown in Figure 3 is arranged according to certain rule and is formed negative poisson ' s ratio core body 3 structures, this figure has also shown several main design variable l, h, t, the λ of negative poisson ' s ratio structure cell element, the Poisson ratio that different variable-values is corresponding different, as work as h=10mm, l=5mm, t=0.5mm, during λ=75 °, Poisson's ratio ν=-2.07; Work as h=10mm, l=5mm, t=0.5mm, during λ=60 °, Poisson's ratio ν=-1.Simultaneously these variablees also can have influence on the mechanical attributes such as equivalent elastic modulus, yield strength of core body 3 structures.
Fig. 6 ~ Fig. 8 has shown the arrangement regulation of cell element and the process that forms core body 3 structures: oblique born of the same parents' arm l of the adjacent two cell element bottoms of ground floor just in time consists of two oblique born of the same parents' arm l on second layer cell element top, and the intersection point line of the oblique born of the same parents' arm of the adjacent two cell element top oblique born of the same parents' arm l and bottom of ground floor l just in time consists of horizontal born of the same parents' arm h on second layer cell element top; Horizontal born of the same parents' arm h on the 3rd layer of cell element top is horizontal born of the same parents' arm h of ground floor cell element bottom, and oblique born of the same parents' arm l on the 3rd layer of adjacent two cell element top just in time consists of two oblique born of the same parents' arm l of second layer cell element bottom; The rest may be inferred, consists of the indent alveolate texture of multilayer cross arrangement.The thickness of core body 3 is determined that by the number of plies of cell element width is determined by the number of every layer of cell element.
Fig. 9, Figure 10 have provided two kinds of negative poisson ' s ratio core body 3 structural sandwich that the different cell element numbers of plies consist of.According to different thickness requirements, the cell element number of plies can change.
Figure 11 ~ Figure 18 shown with finite element method for simulating to the Proof of Concept design sketch of negative poisson ' s ratio core body 3 sandwich plates under the bullet percussion, this moment h=5mm, l=3.8mm, t=0.2mm, during λ=58 °, Poisson's ratio ν=-1.73.
Figure 11 ~ Figure 14 has contrasted regular-type foam aluminum core body 3 and the effect of negative poisson ' s ratio core body 3 under percussion such as bullet such as the condition of grade of equivalent thickness.The result shows that regular-type foam aluminium core body 3 shows normal Poisson's ratio character, and the material of the bullet zone of action is pushed laterally; Negative poisson ' s ratio core body 3 then shows obvious negative poisson ' s ratio character, and the material of the bullet zone of action is assembled to action center, and local strength is strengthened.
Figure 15 ~ Figure 18 has contrasted regular-type foam aluminium core body 3 sandwich plates and the effect of negative poisson ' s ratio core body 3 structural sandwich under percussion such as bullet such as the condition of grade of equivalent thickness.Regular-type foam aluminium core body 3 sandwich plate quilts launch to be worn, and under equal conditions, negative poisson ' s ratio core body 3 sandwich plates are only penetrated half, show that negative poisson ' s ratio core body 3 sandwich plates have better resistance capabilities to bullet.
Claims (4)
1. the shellproof sandwich plate of sandwich comprises top panel (1), lower panel (2) and core body (3), and described core body (3) upper surface is connected with top panel (1), lower surface is connected with lower panel (2); Described top panel (1) and lower panel (2) are the thick plate of 0.5 ~ 2mm;
It is characterized in that: described core body (3) is formed by the according to certain rules cross arrangement of multilayer cell element;
Described cell element is hexagon, be up and down symmetrical swallowtail shape, two limits are that isometric horizontal born of the same parents' arm h, left and right sides four edges are isometric oblique born of the same parents' arm l up and down, horizontal born of the same parents' arm h and tiltedly have included angle X and λ＜90 ° between born of the same parents' arm l satisfies formula h between the length of the length of horizontal born of the same parents' arm h and oblique born of the same parents' arm l〉2lcos λ;
Described certain rule is: oblique born of the same parents' arm l of the adjacent two cell element bottoms of ground floor just in time consists of two oblique born of the same parents' arm l on second layer cell element top, and the intersection point line of the oblique born of the same parents' arm of the adjacent two cell element top oblique born of the same parents' arm l and bottom of ground floor l just in time consists of horizontal born of the same parents' arm h on second layer cell element top; Horizontal born of the same parents' arm h on the 3rd layer of cell element top is horizontal born of the same parents' arm h of ground floor cell element bottom, and oblique born of the same parents' arm l on the 3rd layer of adjacent two cell element top just in time consists of two oblique born of the same parents' arm l of second layer cell element bottom; The rest may be inferred, consists of the indent alveolate texture of multilayer cross arrangement.
2. the shellproof sandwich plate of a kind of sandwich according to claim 1 is characterized in that: described cell element size: tiltedly born of the same parents' arm l is 2.5 ~ 5mm, and horizontal born of the same parents' arm h is 5 ~ 10mm, and tiltedly the thickness t of born of the same parents' arm l and horizontal born of the same parents' arm h is 0.2 ~ 1mm, and included angle X is 30 ~ 75 °.
3. the shellproof sandwich plate of a kind of sandwich according to claim 1 is characterized in that: the thickness of described core body (3) is determined that by the number of plies of cell element width is determined by the number of every layer of cell element.
4. the shellproof sandwich plate of a kind of sandwich according to claim 1 is characterized in that: described connected mode is bonding or welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220315928 CN202742715U (en) | 2012-06-29 | 2012-06-29 | Sandwiched bulletproof sandwich plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220315928 CN202742715U (en) | 2012-06-29 | 2012-06-29 | Sandwiched bulletproof sandwich plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202742715U true CN202742715U (en) | 2013-02-20 |
Family
ID=47702161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220315928 Expired - Fee Related CN202742715U (en) | 2012-06-29 | 2012-06-29 | Sandwiched bulletproof sandwich plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202742715U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717542A (en) * | 2012-06-29 | 2012-10-10 | 大连理工大学 | Bulletproof sandwich plate |
| CN103758904A (en) * | 2014-01-27 | 2014-04-30 | 重庆交通大学西南水运工程科学研究所 | Damping board based on negative poisson ratio structure |
| CN108778845A (en) * | 2016-03-15 | 2018-11-09 | 宝马股份公司 | Distressed structure and pedestrian protection with distressed structure |
| CN108790297A (en) * | 2017-04-26 | 2018-11-13 | 空中客车操作有限责任公司 | three-dimensional auxetic structure, manufacturing method and tool |
| CN108984846A (en) * | 2018-06-20 | 2018-12-11 | 浙江大学 | A kind of 2N-N type canonical cellular design method of sandwich-type composite construction |
| CN112677920A (en) * | 2020-12-16 | 2021-04-20 | 南京理工大学 | Anti-explosion passenger leg protection device for military vehicle |
| CN112918023A (en) * | 2019-12-06 | 2021-06-08 | 同济大学 | Negative Poisson ratio type composite energy absorption structure containing small half-cycle twin interface |
| CN112918022A (en) * | 2019-12-06 | 2021-06-08 | 同济大学 | Negative Poisson ratio-honeycomb type composite energy absorption structure with planar semi-circumferential forward interface |
-
2012
- 2012-06-29 CN CN 201220315928 patent/CN202742715U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717542A (en) * | 2012-06-29 | 2012-10-10 | 大连理工大学 | Bulletproof sandwich plate |
| CN103758904A (en) * | 2014-01-27 | 2014-04-30 | 重庆交通大学西南水运工程科学研究所 | Damping board based on negative poisson ratio structure |
| CN103758904B (en) * | 2014-01-27 | 2016-03-09 | 重庆交通大学西南水运工程科学研究所 | A kind of damping sheet based on negative poisson ' s ratio structure |
| CN108778845A (en) * | 2016-03-15 | 2018-11-09 | 宝马股份公司 | Distressed structure and pedestrian protection with distressed structure |
| CN108790297A (en) * | 2017-04-26 | 2018-11-13 | 空中客车操作有限责任公司 | three-dimensional auxetic structure, manufacturing method and tool |
| CN108790297B (en) * | 2017-04-26 | 2021-10-15 | 空中客车操作有限责任公司 | Three-dimensional auxetic structures, methods of manufacture and tools |
| CN108984846A (en) * | 2018-06-20 | 2018-12-11 | 浙江大学 | A kind of 2N-N type canonical cellular design method of sandwich-type composite construction |
| CN112918023A (en) * | 2019-12-06 | 2021-06-08 | 同济大学 | Negative Poisson ratio type composite energy absorption structure containing small half-cycle twin interface |
| CN112918022A (en) * | 2019-12-06 | 2021-06-08 | 同济大学 | Negative Poisson ratio-honeycomb type composite energy absorption structure with planar semi-circumferential forward interface |
| CN112677920A (en) * | 2020-12-16 | 2021-04-20 | 南京理工大学 | Anti-explosion passenger leg protection device for military vehicle |
| CN112677920B (en) * | 2020-12-16 | 2022-01-11 | 南京理工大学 | Anti-explosion passenger leg protection device for military vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202742715U (en) | Sandwiched bulletproof sandwich plate | |
| CN102717542A (en) | Bulletproof sandwich plate | |
| CN107498948B (en) | Multilayer gradient lattice sandwich board and preparation method thereof | |
| Liu et al. | High velocity impact responses of sandwich panels with metal fibre laminate skins and aluminium foam core | |
| Hassanpour Roudbeneh et al. | Experimental investigation of impact loading on honeycomb sandwich panels filled with foam | |
| CN109094139B (en) | Novel structural honeycomb sandwich plate | |
| CN105799231B (en) | The core filled composite material of opposite hemispherical Shell scapus born of the same parents' structure | |
| CN111746443A (en) | Novel three-dimensional chiral negative Poisson ratio multicellular energy absorption structure | |
| Yasui | Dynamic axial crushing of multi-layer honeycomb panels and impact tensile behavior of the component members | |
| CN110541906B (en) | Double-arrow type negative Poisson ratio structure body | |
| CN110425243B (en) | Multidirectional bearing honeycomb structure | |
| Graciano et al. | Experimental investigation on the axial collapse of expanded metal tubes | |
| CN110043593B (en) | Honeycomb energy absorption structure and preparation method thereof | |
| Basily et al. | Dynamic axial crushing of multilayer core structures of folded Chevron patterns | |
| CN112943834A (en) | Positive and negative Poisson ratio cycle hybridization impact-resistant energy-absorbing structure and application thereof | |
| CN208593365U (en) | A kind of electric car anti-collision beam energy absorbing box | |
| Li et al. | Deformation behavior and mechanical properties of periodic topological Ti structures fabricated by superplastic forming/diffusion bonding | |
| CN112922995B (en) | Composite energy absorption structure based on negative Poisson ratio structure | |
| CN110978666A (en) | Composite sandwich plate with gull-like shaft structure | |
| CN110576654A (en) | Be applied to sandwich structure on car collision energy-absorbing box | |
| CN105774052A (en) | Sandwich composite material of column cell structure formed by multilayer overlay of curved bodies | |
| CN111993718B (en) | Composite sandwich board | |
| Zhang et al. | Influence mechanism of the trabecular and chamfer radii on the three-point bending properties of trabecular beetle elytron plates | |
| CN113653758B (en) | Honeycomb structure | |
| CN111186177A (en) | Honeycomb panel structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20130629 |