CN115468457A - Anti-invasion structure with special-shaped surface penetration-resistant layer - Google Patents
Anti-invasion structure with special-shaped surface penetration-resistant layer Download PDFInfo
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- CN115468457A CN115468457A CN202211262397.2A CN202211262397A CN115468457A CN 115468457 A CN115468457 A CN 115468457A CN 202211262397 A CN202211262397 A CN 202211262397A CN 115468457 A CN115468457 A CN 115468457A
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- 230000035515 penetration Effects 0.000 title claims description 37
- 230000001740 anti-invasion Effects 0.000 title description 2
- 238000004880 explosion Methods 0.000 claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 238000010276 construction Methods 0.000 claims abstract description 4
- 239000000919 ceramic Substances 0.000 claims description 17
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 7
- 239000004917 carbon fiber Substances 0.000 claims description 7
- 239000003365 glass fiber Substances 0.000 claims description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 7
- 229920002396 Polyurea Polymers 0.000 claims description 5
- 229910000797 Ultra-high-strength steel Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 8
- 238000005242 forging Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 238000005474 detonation Methods 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 239000013598 vector Substances 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
- F41H11/00—Defence installations; Defence devices
Abstract
The invention relates to an anti-penetration and explosion structure with an anti-penetration layer with a special-shaped surface, which comprises a collapse-proof layer, an anti-penetration layer and an anti-penetration layer which are sequentially arranged outside a project main body from inside to outside, wherein the anti-penetration layer is an integrally forged steel plate structure and comprises a base layer and the special-shaped layer which are fixedly integrated, the base layer is arranged on the outer surface of the anti-penetration layer, the outer surface of the base layer is provided with the special-shaped layer, and the special-shaped layer comprises yaw balls which are uniformly arranged in an array manner and are axially equidistant. According to the surface special-shaped anti-erosion-explosion yaw structure, on the basis of saving materials, the designed structure has uneven surfaces, and the thickness of the structure is smaller than that of a conventional anti-erosion-explosion structure under the equivalent anti-erosion-explosion capability, so that the structure is convenient to apply to protection engineering construction.
Description
Technical Field
The invention belongs to the technical field of penetration resistance of elastomers, and particularly relates to an anti-penetration structure with a penetration-resistant layer on a special-shaped surface.
Background
In military engineering, an anti-penetration structure is constructed on the periphery of an engineering main body to prevent penetration of a projectile body, so that the attacking projectile body is damaged or detonated in an anti-penetration device, and the purpose of protecting the safety of the engineering main body is achieved. At present, traditional bullet structure that hides generally improves protective capacities through increasing bullet layer thickness and intensity, but the thickness is too big easily leads to major structure to bear great dead load, is unfavorable for major structure's design and construction. Compared with the strength and hardness of the armor steel produced by foreign military and strong countries, the strength of the high-strength armor steel plate produced in China is still lower, and the anti-elastic capability is limited.
Disclosure of Invention
The invention aims to provide an anti-penetration and explosion structure with a special-shaped surface penetration-resistant layer, which has strong penetration-resistant capability, thin thickness and light weight.
The specific technical scheme is as follows: an anti-explosion structure with a special-shaped surface anti-penetration layer comprises a collapse-proof layer, an anti-explosion layer and an anti-penetration layer, wherein the collapse-proof layer is arranged on the outer side surface of an engineering main body, the anti-explosion layer is arranged on the outer side surface of the collapse-proof layer, and the penetration-proof layer is arranged on the outer side surface of the anti-explosion layer; the penetration-resistant layer is of an integrally forged steel plate structure and is composed of a base layer and a special-shaped layer which are fixed into a whole, the base layer is arranged on the upper surface of the explosion-resistant layer, and the special-shaped layer is arranged on the outer surface of the base layer; the special-shaped layer is a spherical crown (yaw ball) which is uniformly arranged in an array mode and is equidistant in each axial direction, and the function of the special-shaped layer is to enable the special-shaped layer to have a yaw effect on an oncoming warhead. The height from the top of the spherical cap to the base layer is smaller than the radius of the sphere, and the center distance between adjacent yaw spheres is 4/3 times of the diameter of the sphere.
Furthermore, a plurality of blind holes are uniformly formed in the surface of the yawing ball, the axes of the blind holes point to the direction of the center of the yawing ball, a ceramic rod is inserted into the blind holes through rubber, and a spherical crown is arranged at one end, facing the outside, of the ceramic rod.
Furthermore, the ceramic rod is made of silicon carbide, and the height of the spherical crown of the ceramic rod is one fifth of the diameter of the spherical crown.
Furthermore, the depth of the blind hole is equal to the radius of the blind hole, and the diameter of the blind hole is one-fifteenth of the diameter of the yaw ball.
Furthermore, the anti-explosion layer is one or a combination of more than two of a steel fiber concrete layer, a common concrete layer, a carbon fiber plate layer, a glass fiber plate layer, a ceramic plate layer and a foamed aluminum layer.
Furthermore, the collapse prevention layer is a steel plate layer, a polyurea layer, a carbon fiber plate or a glass fiber plate.
Furthermore, the penetration-resistant layer has tensile strength of more than 1400MPa, elongation of more than 14%, reduction of area of more than 40%, hardness of more than 500HB, and impact toughness value of more than 60J/cm 2 The ultra-high strength steel of (1).
Further, the thickness and the yaw diameter of the penetration-resistant layer are different according to different types of the bulletproof seeds, and are determined by a target test.
Advantageous effects
1. Due to the non-uniformity of the surface of the structure and the ultrahigh hardness and strength of the surface of the anti-penetration layer, the bullet body is subjected to asymmetric non-uniform resistance after touching the uneven high-strength surface and also subjected to complex bending moment, so that the bullet body deflects, is damaged or is disintegrated, and a good anti-penetration effect is achieved.
2. Compared with the common high-strength armor steel, the thickness and the weight of the anti-explosion structure are further reduced under the same protection effect.
3. When the projectile body penetrates into the anti-explosion layer and contacts with the surface of the projectile body for explosion, under the action of extremely high pressure (generally tens of thousands of MPa) of detonation products, the medium of the anti-explosion layer is strongly compressed to form explosion pits, breakage, cracks, structural integral deformation and the like, so that shock wave energy is dissipated, and the anti-explosion effect is good.
4. The anti-seismic collapse layer is made of flexible materials such as a steel plate layer or a polyurea layer, a carbon fiber plate and a glass fiber plate, can generate large deformation, can absorb shock waves, and can effectively restrain the back of the anti-seismic layer when the anti-seismic layer collapses, so that the anti-seismic collapse phenomenon is achieved.
Drawings
Fig. 1 is a schematic view of the overall structure of the anti-explosion structure of the present invention.
Fig. 2 is a partial top view of the penetration resistant layer of the present invention.
Fig. 3 is a flow chart of the die forging forming process for the anti-penetration layer surface profile of the invention.
In the figure, 1, a collapse prevention layer, 2, an anti-explosion layer, 301, a special-shaped surface penetration resistance layer, 302, ceramic columns embedded in a yaw ball.
Detailed Description
The invention is further described in detail below with reference to the drawings.
Example 1
This example describes an anti-detonation structure with a surface-profiled penetration-resistant layer.
As shown in fig. 1 and fig. 2, the anti-penetration and explosion structure of the special-shaped surface penetration resistant layer comprises a collapse-proof layer 1, an anti-explosion layer 2, a special-shaped surface penetration resistant layer 301 and a ceramic column 302 which are sequentially arranged outside an engineering main body from inside to outside. The anti-explosion layer 2 is formed by one or the combination of more than two of a steel fiber concrete layer, a common concrete layer, a carbon fiber plate layer, a glass fiber plate layer, a ceramic plate layer and a foamed aluminum layer.
The anti-seismic collapse layer 1 is a steel plate layer or a polyurea layer.
When the protection engineering is constructed, the lower layer and the upper layer are paved layer by layer.
The anti-seismic collapse layer 1 is arranged on the outer side surface of the engineering main body, the anti-explosion layer 2 is arranged on the anti-seismic collapse layer 1, and the anti-penetration layer is arranged on the top layer. The penetration resistant layer is composed of a base layer and a special-shaped layer which are fixed into a whole. Using an armored steel plate with the tensile strength of more than 1400MPa and the thickness of more than 300mm to integrally forge and form the steel plate on a 15000 ton ultra-large press, and carrying out quenching and tempering treatment after forging. The base layer 301 is arranged on the upper surface of the anti-explosion layer 2, and the outer surface of the base layer is provided with yaw balls which are uniformly arranged in an array manner and are axially equidistant; the yawing balls are of hemispherical structures, the height from the top to the base layer of the yawing balls is smaller than the radius of the yawing balls, and the center distance between every two adjacent yawing balls is 4/3 times of the diameter of each yawing ball. The thickness of the penetration-resistant layer varies depending on the species to be protected and can be determined by target testing.
In a preferred embodiment, a plurality of blind holes are uniformly formed in the surface of the yawing ball, the axes of the blind holes point to the direction of the center of the yawing ball, a ceramic rod is inserted into the blind holes through glue, and the end, facing the outside, of the ceramic rod is provided with a spherical cap. The ceramic rod is made of silicon carbide, and the height of the spherical crown is one fifth of the diameter of the spherical crown. The blind hole depth is equal to the blind hole radius. The diameter of the blind hole is one-fifteenth of the diameter of the yaw ball.
The penetration-resistant layer is a special-shaped surface, after the projectile body impacts the special-shaped surface, an attack angle is generated due to the change of the speed direction of the mass center, and a yaw angle is generated due to the rotation of the projectile body around the mass center, so that in the subsequent penetration process, the penetration angle (the included angle between the speed vector and the axis of the projectile body) and the yaw angle (the included angle between the axis of the projectile body and the normal line of the surface of the penetration medium) are realized; when the body touches the special-shaped body at a certain angle, it will be acted by two forces, respectively heavyThe force (the point of action is the center of mass of the projectile) and the reaction of the impact force (the point of action is the point of contact). The gravity forms a rotating force system around the impact point and the support reaction force of the collision force forms a rotating force system around the mass center, so that the projectile body rotates in the plane force system, and the penetration track deflects more and more along with the gradual increase of the impact angle, and the effect of increasing the penetration stroke is more obvious; when the projectile body moves further, as the angle is increased, the same-speed vectors of the projectile body axis are not parallel to each other, an included angle, called an attack angle, is formed between the projectile body axis and the speed vector, and the occurrence of the attack angle can increase the overturning moment of the projectile body; because the penetration-resistant layer is in the shape of a special surface, collision points are increased along with the movement of the projectile body, the projectile body bears resistance, bending moment and the like in different directions, and the stress is more complex. Under the action of complex resistance and bending moment, the elastic body is easy to bend, deform, break and the like; in the aspect of penetration-resistant layer materials, the tensile strength is more than 1400MPa, the elongation is more than 14 percent, the reduction of area is more than 40 percent, and the impact toughness value is more than 60J/cm 2 Compared with the common high-strength armor steel, the ultra-high-strength steel has stronger penetration resistance under the same conditions. The ceramic column embedded into the spherical crown has high hardness and strong pressure resistance, and the yawing effect and the anti-elasticity performance of the elastomer are further improved.
When the projectile body penetrates into the anti-explosion layer and contacts with the surface of the projectile body for explosion, under the action of extremely high pressure (generally tens of thousands of MPa) of detonation products, the medium of the anti-explosion layer is strongly compressed to form explosion pits, breakage, cracks, structural integral deformation and the like, so that shock wave energy is dissipated;
the anti-seismic collapse layer is a steel plate layer or is made of flexible materials such as polyurea, carbon fiber plates and glass fiber plates, the materials can generate large deformation, shock waves can be absorbed, and when the anti-seismic collapse layer collapses, the materials can effectively restrain the back of the anti-seismic collapse layer, so that the anti-seismic collapse phenomenon is achieved.
The irregular surface penetration-resistant layer provided by the invention has the advantages that on the basis of saving materials, the designed structure has uneven and uneven surfaces, so that the projectile body bears asymmetric uneven resistance and complex bending moment in the impacting process, the projectile body deflects, the shell is broken or disintegrated, the explosive body in the projectile body detonates and the like, the penetration resistance and explosion resistance effects are achieved, the thickness of the structure is smaller than that of a conventional penetration-resistant structure under the equivalent penetration-resistant capability, and the construction application in protection engineering is facilitated. In the aspect of protection materials, the ultra-high strength steel with the tensile strength of more than 1400MPa is adopted, and under the same protection effect, compared with the common high strength armor steel, the thickness and the weight of the anti-explosion structure can be further reduced.
In the aspect of the manufacturing process of the penetration-resistant layer, the processing and manufacturing are carried out by adopting the process form of integral forging of the special-shaped structure, and compared with the surface special-shaped bulletproof structure manufactured by the processes of welding, casting and the like, the protection capability of the penetration-resistant layer can be greatly improved.
Example 2
This example describes the process of forming a surface profile of a penetration-resistant layer by die forging.
The penetration-resistant layer of the special-shaped surface is formed by integrally forging an ultra-thick super-strong armor steel plate. The processing equipment comprises a 15000 ton press machine, an operating machine, a mould, accessories, a special lifting appliance, a heating furnace, a positioning tool, a crown block, an infrared thermometer and the like. The forging process comprises the following steps: and (3) forging a hemisphere on the surface of the flat steel plate by using a hydraulic machine, starting forging from the middle of the plate, forging two rows of balls each time, and gradually expanding to the left and the right until the whole surface is forged to form a spherical crown. The positioning plate limits the blank to prevent lateral movement, limits the pressing amount of each hammer, and feeds the anvil according to the anvil feeding amount designed by the process so as to control the overlapping amount between two adjacent hammers, wherein the forming of the spherical crown needs 5 times of heating, and 5 hammers are forged. The die is water cooled and lubricated during the swaging process. And performing thermal refining after forging. The quenching temperature is 880-940 ℃, and the quenching time is 10-30 min. The tempering temperature is 500-600 ℃, and the tempering time is 20-50 min.
The specific forging process parameters are as follows:
the present invention is not limited to the above preferred embodiments, and any modifications, equivalents, improvements, etc. made within the principle of the present invention are included in the scope of the present invention.
Claims (8)
1. An anti-explosion structure with an anti-penetration layer with a special-shaped surface is characterized by comprising a collapse-proof layer, an anti-explosion layer and an anti-penetration layer, wherein the collapse-proof layer is arranged on the outer side surface of a project main body, the anti-explosion layer is arranged on the outer side surface of the collapse-proof layer, and the penetration-proof layer is arranged on the outer side surface of the anti-explosion layer; the penetration-resistant layer is of an integrally forged steel plate structure and is composed of a base layer and a special-shaped layer which are fixed into a whole, the base layer is arranged on the outer surface of the anti-explosion layer, and the special-shaped layer is arranged on the outer surface of the base layer; the special-shaped layer comprises yaw balls which are uniformly arranged in an array manner and are axially equidistant; the yawing balls are of hemispherical structures, the height from the top to the base layer of the yawing balls is smaller than the radius of the yawing balls, and the center distance between every two adjacent yawing balls is 4/3 times of the diameter of each yawing ball.
2. The anti-explosion structure according to claim 1, wherein a plurality of blind holes are uniformly formed in the surface of the yawing ball, the axes of the blind holes point to the center direction of the yawing ball, a ceramic rod is inserted into the blind holes with glue, and one end of the ceramic rod facing the outside is provided with a spherical cap.
3. The implosion resistant structure of claim 2 wherein said ceramic rods are made of silicon carbide and said ceramic rods have a spherical crown height of one fifth of the diameter of the spherical crown.
4. The blast resistant structure of claim 2, wherein the blind hole has a depth equal to a blind hole radius, and a blind hole diameter that is one-fifteenth of a yaw sphere diameter.
5. The blast resistant structure according to claim 1, wherein the blast resistant layer is one or a combination of two or more of a steel fiber concrete layer, a common concrete layer, a carbon fiber plate layer, a glass fiber plate layer, a ceramic plate layer and a foamed aluminum layer.
6. The blast-resistant structure according to claim 1, wherein the collapse-resistant layer is a steel plate layer, a polyurea layer, a carbon fiber plate or a glass fiber plate.
7. The implosion resistant structure of claim 1 wherein said penetration resistant layer has a tensile strength greater than 1400MPa, an elongation greater than 14%, a reduction of area greater than 40%, and an impact toughness value greater than 60J/cm 2 The ultra-high strength steel of (2).
8. The blast resistant construction of claim 7, wherein the thickness of the penetration resistant layer varies from species to species, as determined by target testing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211262397.2A CN115468457A (en) | 2022-10-14 | 2022-10-14 | Anti-invasion structure with special-shaped surface penetration-resistant layer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211262397.2A CN115468457A (en) | 2022-10-14 | 2022-10-14 | Anti-invasion structure with special-shaped surface penetration-resistant layer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040020353A1 (en) * | 2002-05-12 | 2004-02-05 | Moshe Ravid | Ballistic armor |
| CA2500619A1 (en) * | 2005-02-28 | 2006-08-28 | Aceram Technologies Inc. | Improved ceramic components, ceramic component systems, and ceramic armour systems |
| US20100260972A1 (en) * | 2007-07-30 | 2010-10-14 | Kyocera Corporation | Protective Member and Protective Body Using the Same |
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| CN208501948U (en) * | 2018-06-21 | 2019-02-15 | 中国人民解放军61489部队 | A kind of Ceramic Balls Basalt fiber concrete protective plate of anti-bomb penetration |
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| CN212512712U (en) * | 2020-05-21 | 2021-02-09 | 南京九地新材料科技有限公司 | Protection structure for enhancing penetration resistance by circumferential constraint |
| CN214842777U (en) * | 2021-03-26 | 2021-11-23 | 太仓荣南密封件科技有限公司 | Novel bulletproof composite board for aircraft |
| CN114894037A (en) * | 2022-05-23 | 2022-08-12 | 中国人民解放军海军工程大学 | Deflection yawing type composite protection structure |
-
2022
- 2022-10-14 CN CN202211262397.2A patent/CN115468457A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040020353A1 (en) * | 2002-05-12 | 2004-02-05 | Moshe Ravid | Ballistic armor |
| CA2500619A1 (en) * | 2005-02-28 | 2006-08-28 | Aceram Technologies Inc. | Improved ceramic components, ceramic component systems, and ceramic armour systems |
| US20100260972A1 (en) * | 2007-07-30 | 2010-10-14 | Kyocera Corporation | Protective Member and Protective Body Using the Same |
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