Ultrahigh-speed prefabricated active metal explosion driving device
Through optimized design and material selection, the ultra-high-speed prefabricated active metal explosion drive device achieves high density, high speed and uniform distribution of the fragment group, solving the problem of insufficient density, speed and uniformity of existing devices, reducing test costs and improving safety and damage effects.
Patent Information
- Application Number
- CN202510658436.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-21
- Publication Date
- 2025-07-18
AI Technical Summary
The existing prefabricated active metal explosion drives have shortcomings in terms of fragment density, speed and uniform distribution, and traditional designs rely on empirical formulas to lead to inefficiency, high test costs and insufficient safety.
The ultra-high-speed prefabricated active metal explosion drive device is adopted. Through optimized design and material selection, aluminum-based active material fragments and 2A12 aluminum alloy shell are used, combined with numerical simulation and orthogonal design, and the high density, high speed and uniform distribution of the fragment group are achieved, and 2A12 aluminum alloy material is used to achieve lightweight.
The high density and high speed of the fragment group on the target plate are achieved, the test cost is reduced, the safety and damage effect are improved, and the casing is lighter and the maneuverability and operability are improved.
Smart Images
Figure CN120333243A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of fragmentation and blast warheads, and in particular to a hypervelocity prefabricated reactive metal explosion driving device. Background Art
[0002] To meet the modern military requirements and improve the density and velocity of the fragment cloud of ammunition, prefabricated reactive metal explosion driving devices have been widely used in the military field. However, the current prefabricated reactive metal explosion driving devices mostly adopt traditional designs and mainly rely on empirical formulas (such as Gurney formula). The classical Gurney formula is widely used to evaluate the fragment velocity of warheads with circular cross-sections, and its fragment velocity distribution is relatively uniform. However, in some specific cases, a certain degree of velocity gain can be achieved through optimized design. Summary of the Invention
[0003] The purpose of the present invention is to provide a hypervelocity prefabricated reactive metal explosion driving device, which can achieve a high density, high velocity and uniform distribution of the fragment cloud, reduce the test cost and improve the safety, while significantly enhancing the damage effect of the fragments.
[0004] To achieve the above purpose, the present invention provides a hypervelocity prefabricated reactive metal explosion driving device, including a front end cover, a housing and a rear end cover. The rear end cover is connected to the housing by a threaded connection, and the housing is connected to the front end cover by a threaded connection. Aluminum-based reactive material fragments are arranged on the inner surface of the front end cover, and the end face of the aluminum-based reactive material fragments is in contact with the explosive charge. The explosive charge is arranged inside the housing.
[0005] Preferably, the explosive charge is filled with Composition B by the casting method, and the charge size is φ150mm×φ150mm.
[0006] Preferably, a through hole is arranged on the rear end cover, and a detonator and booster charge are arranged inside the through hole.
[0007] Preferably, the rear end cover, the housing and the front end cover are all made of 2A12 aluminum alloy material. The front end cover is set as a shaped charge structure with an arc radius of 427.5mm, and the thickness of the arc part is 2mm.
[0008] Preferably, the shapes of the aluminum-based reactive material fragments are spheres, cuboids, cylinders and prisms.
[0009] Preferably, the aluminum-based reactive material fragments are connected to the front end cover through epoxy resin, and the diameter of the aluminum-based reactive material fragments is one of 5mm and 9.5mm.
[0010] Therefore, by adopting the above hypervelocity prefabricated reactive metal explosion driving device, the present invention has the following beneficial effects:
[0011] (1) The device design ensures that the density of the φ5mm aluminum-based active material fragment group on a 3m×6m target plate is not less than 13 pieces / m 2 ; the density of the φ9.5mm aluminum-based active material fragment group on a 3m×6m target plate is not less than 10 pieces / m 2 , meeting the requirement of damaging the target with high density.
[0012] (2) Through optimized design, the initial velocity of the φ5mm aluminum-based active material fragments can reach 3125m / s; the initial velocity of the φ9.5mm aluminum-based active material fragments can reach 2040m / s, ensuring that the fragments have sufficient kinetic energy and penetration power.
[0013] (3) The shell is made of 2A12 aluminum alloy material to achieve the light weight of the device. Compared with the traditional 45 steel shell, the weight is reduced by more than 15%, improving the mobility and operability.
[0014] The technical solution of the present invention will be further described in detail below through the accompanying drawings and embodiments. Description of the Drawings
[0015] Figure 1 It is a schematic structural diagram of an embodiment of a super-high-speed prefabricated active metal explosion-driven device of the present invention;
[0016] Figure 2 It is a two-dimensional schematic structural diagram of the φ5mm aluminum-based active material fragment device of the present invention;
[0017] Figure 3 It is a two-dimensional schematic structural diagram of the φ9.5mm aluminum-based active material fragment device of the present invention;
[0018] Figure 4 It is a layout diagram of the use of the device of the present invention;
[0019] Reference Signs
[0020] 1. Rear end cover; 2. Booster charge; 3. Detonator; 4. Explosive charge; 5. Aluminum-based active material fragment; 6. Front end cover; 7. Shell; 8. Target; 9. Support device; 10. Initiation control device. Detailed Embodiment
[0021] The technical solution of the present invention will be further described below through the accompanying drawings and embodiments.
[0022] Unless otherwise defined, the technical terms or scientific terms used in this invention shall have the ordinary meanings as understood by those with ordinary skills in the field to which this invention pertains. The "first", "second" and similar terms used in this invention do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "comprising" or "including" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.
[0023] Embodiment
[0024] Please refer to Figures 1-4 , this invention provides a super-high-speed prefabricated active metal explosion-driven device, including a front end cover 6, a housing 7 and a rear end cover 1. The rear end cover 1 is threadedly connected to the housing 7, and the housing 7 is threadedly connected to the front end cover 6. An aluminum-based active material fragment 5 is provided on the inner surface of the front end cover 6. The end face of the aluminum-based active material fragment 5 contacts the explosive charge 4, and the explosive charge 4 is arranged inside the housing 7.
[0025] The explosive charge 4 is filled with Composition B by the casting method, and the charge size is φ150mm×φ150mm. This explosive is widely used in the field of national defense and military industry.
[0026] A through hole is provided on the rear end cover 1, and a detonator 3 and booster charge 2 are arranged in the through hole.
[0027] The rear end cover 1, the housing 7 and the front end cover 6 are all made of 2A12 aluminum alloy material. The thickness of the housing 7 is 9.5mm. The front end cover 6 is set as a shaped charge structure with an arc radius of 427.5mm, and the thickness of the arc part is 2mm.
[0028] The outer shapes of the aluminum-based active material fragments 5 are spheres, cuboids, cylinders and prisms. The aluminum-based active material fragments 5 are connected to the front end cover 6 through epoxy resin. The diameter of the aluminum-based active material fragments 5 is one of 5mm and 9.5mm. The aluminum-based active material includes but is not limited to active materials with different densities such as zirconium-based, and inert materials such as tungsten alloy and steel.
[0029] Optimize the structural parameters (such as the spherical segment curvature radius, charge length-diameter ratio, and shell thickness) through numerical simulation and combine with the orthogonal design method to efficiently convert the explosive energy into fragment kinetic energy. At the same time, use experimental verification to ensure the reliability of the design and the actual application effect, so as to achieve high density, high speed, and uniform distribution of the fragment group. The device uses a 2A12 aluminum alloy shell 7 and B explosive charge 4, combined with φ5mm aluminum-based active material fragments 5 and φ9.5mm aluminum-based active material fragments 5. Through axial focusing design, the fragments are concentrated and scattered in a specific direction. Optimize the device structure through finite element simulation and orthogonal experiments to ensure that the fragment scattering angle and speed meet the design requirements. Use a grid velocity measurement target and a transient recorder to measure the fragment speed, and use a vertical target test to evaluate the density. At the same time, take safety protection measures to ensure the safety of the experiment. The present invention also provides a variety of alternative solutions, such as selecting other high-energy explosives, high-strength steel or composite material shells, and using shaped charges or multi-layer prefabricated fragment designs to meet different military needs.
[0030] The prefabricated fragments of the ultra-high-speed prefabricated active metal explosion-driven device of the present invention are placed in the axial direction, so the fragment scattering direction is relatively concentrated. When in use / testing, the device can be detonated by the method of static detonation at the bottom cover position of the device. The specific layout during use can refer to Figure 4 as shown. Since the rear end cover 1 of the device is reserved with an opening to facilitate the subsequent assembly of the booster charge and detonator 3, the safety of service handling and the adaptability for use under different required conditions can be improved during actual use, storage, and transportation.
[0031] The specific usage method for the experiment can refer to the following steps:
[0032] 1) Select and determine the damage target 8.
[0033] 2) Do preliminary work such as site layout and network line erection.
[0034] 3) Evacuate irrelevant personnel to a safe distance or shelter.
[0035] 4) Unseal the ultra-high-speed prefabricated active metal explosion-driven device and fix it on the support device 9.
[0036] 5) Assemble the booster charge 2 and detonator 3.
[0037] 6) Connect the detonator 3 to the detonation control device 10 and check for any abnormalities.
[0038] 7) After confirming the safety of service personnel and the surrounding area of the site, detonate the ultra-high-speed prefabricated active metal explosion-driven device.
[0039] Therefore, the present invention adopts the above-mentioned ultra-high-speed prefabricated active metal explosion driving device, and the device design ensures that the density of the φ5mm aluminum-based active material fragment group on a 3m×6m target plate is not less than 13 pieces / m 2 ; the density of the φ9.5mm aluminum-based active material fragment group on a 3m×6m target plate is not less than 10 pieces / m 2 , meeting the requirements of high-density damage to targets. Through optimized design, the initial velocity of the φ5mm aluminum-based active material fragments can reach 3125m / s; the initial velocity of the φ9.5mm aluminum-based active material fragments can reach 2040m / s, ensuring that the fragments have sufficient kinetic energy and penetration power. The shell is made of 2A12 aluminum alloy material to achieve the lightweight of the device. Compared with the traditional 45 steel shell, the weight is reduced by more than 15%, improving the mobility and operability.
[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify or equivalently replace the technical solutions of the present invention, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present invention.
Claims
1. A super-high-speed prefabricated active metal explosion driving device, characterized in that: It includes a front end cover, a housing and a rear end cover. The rear end cover is threadedly connected to the housing, and the housing is threadedly connected to the front end cover. Aluminum-based active material fragments are provided on the inner surface of the front end cover, and the end face of the aluminum-based active material fragments contacts the explosive charge, and the explosive charge is arranged inside the housing.
2. The ultra-high-speed prefabricated active metal explosion driving device according to claim 1, characterized in that: The explosive charge is filled with Composition B by the casting method, and the charge size is φ150mm×φ150mm.
3. A super-high-speed prefabricated active metal explosion driving device according to claim 2, characterized in that: A through hole is provided on the rear end cover, and a detonator and booster charge are arranged in the through hole.
4. The ultra-high-speed prefabricated reactive metal explosion driving device according to claim 3, wherein: The rear end cover, the housing and the front end cover are all made of 2A12 aluminum alloy material. The front end cover is set as a shaped charge structure with an arc radius of 427.5mm, and the thickness of the arc part is 2mm.
5. The super-high-speed prefabricated reactive metal explosion driving device according to claim 4, characterized in that: The shapes of the aluminum-based active material fragments are spheres, cuboids, cylinders and prisms.
6. The ultra-high-speed prefabricated reactive metal explosion driving device according to claim 5, characterized in that: The aluminum-based active material fragments are connected to the front end cover through epoxy resin, and the diameter of the aluminum-based active material fragments is one of 5mm and 9.5mm.