An explosive structure without fuze charge to achieve fixed layer or fixed depth explosion

Abstract

The present invention discloses an explosive structure that does not contain a fuze charge and can achieve fixed-layer / fixed-depth explosion. The present invention places an active core inside a penetrating rod to form an explosive damage section of the explosive structure; the portion of the penetrating rod that does not contain an active core forms a penetration damage section of the explosive structure; by adjusting the position and number of the explosive damage section and the penetration damage section, as well as the activation threshold of the active core, fixed-layer / fixed-depth damage to the target plate is achieved. The present invention can achieve fixed-layer / fixed-depth explosive damage to multi-layer large ship targets based on the non-self-sustaining activation explosion characteristics of active materials without the need for fuzes or explosives, breaking through the limitations of the influence of high overloads during launch and impact on the fuses and charges of traditional explosive structures, and providing an effective technical approach for high-speed / high-impact missile warheads to efficiently and reliably exert fixed-layer / fixed-depth damage effects.

Description

Technical Field

[0001] The present invention relates to the technical field of explosive structures, and specifically to an explosive structure that does not contain a fuse charge and can achieve fixed-layer / fixed-depth explosion. The structure can be adapted to high-flight-speed / high-landing-speed missile weapon platforms, eliminate the adverse effects of high overload environments on the fuses and explosives of traditional explosive structures during the process of attacking large ships and building targets, improve the reliability of the explosive structure's fixed-layer / fixed-depth damage, and promote the multi-purpose development of the explosive structure. Background Art

[0002] The primary type of structure used to strike multi-layered large ships, the explosive structure primarily consists of a high-strength metal hull, a high-explosive charge, and a fuze. The basic operating principle is that the explosive structure relies on kinetic energy to penetrate the target. Using the fuze's layer-counting / timing function, after penetrating a certain number of target layers or reaching a certain depth, the high-explosive charge detonates, causing damage to a specific compartment or structural area at a specific layer or depth.

[0003] With advancements in anti-missile interception technology and terminal target protection, the terminal ballistic velocity of explosive structures engaging targets continues to increase. Conventional explosive structures face two significant technical challenges. First, the flight and descent velocities of platforms carrying explosive structures are continuously advancing toward supersonic and hypersonic speeds. This results in intense aerodynamic heating of the explosive structure due to air viscous drag and friction. This causes a sudden rise in surface temperature, while the internal explosive charge is subjected to a harsh thermal environment due to heat conduction, potentially leading to charge instability and premature detonation. Second, due to the high overloads during penetration, the reliable timing, layer, and depth detonation of the fuze during the target engagement process is susceptible to extreme overloads. These two deficiencies limit the effective terminal destructive power and multi-purpose application of existing explosive structures.

[0004] Active materials are a new type of high-energy-density energetic material characterized by "inert-like insensitivity, explosive-like energetic content, micromillisecond activation delay, and non-self-sustaining explosive energy release." Broadly speaking, active materials include polymeric, chemical, alloy, and amorphous systems. Under normal conditions, they are in an inert metastable state with excellent mechanical properties. However, under strong impact loading, they become activated and undergo chemical reactions, rapidly and violently releasing large amounts of chemical energy, producing shock waves, heat, and combustion. This lays a crucial technical foundation for the transition from traditional invasive explosive structures to a fuse-free and charge-free system.

[0005] By breaking the traditional basic structure and action system of explosives and combining the extreme speed and load characteristics of the explosive structure, a new explosive structure is invented, which can provide an effective technical approach for the fixed layer / fixed depth damage effect. Summary of the Invention

[0006] In view of this, the present invention provides an explosive structure that does not contain a fuse charge and can achieve fixed-layer / fixed-depth explosion. It can adapt to high-flying-speed / high-landing-speed missile weapon platforms, eliminate the adverse effects of high-overload environments on the fuses and explosives of traditional explosive structures during the attack on large ships and building targets, improve the reliability of the explosive structure's fixed-layer / fixed-depth damage, and promote the multi-purpose development of the explosive structure.

[0007] The explosive structure for realizing fixed layer / fixed depth explosion without fuse charge of the present invention comprises: a wind cap, a posture adjustment cap, a penetration rod, a confining pressure peak cutting structure and an active core;

[0008] Among them, the wind cap and the attitude adjustment cap are installed on the head of the penetration rod body to achieve the attitude adjustment of the penetration structure when it hits the target;

[0009] The active core is built into the penetrating rod, forming the explosive damage section of the explosive structure; the portion of the penetrating rod without the built-in active core forms the penetration damage section of the explosive structure; the position and number of the explosive damage section and penetration damage section are adjusted based on the target plate's fixed layer / deep damage target; when there are multiple explosive damage sections, the activation threshold of the built-in active core decreases from the head to the tail of the penetrating rod;

[0010] The confining pressure peak-cutting structure is wrapped around the outside of the active core, and is used to form a confining pressure constraint on the active core and reduce the high peak short-time load generated by the penetrating rod during the penetration process into a low peak long-time load.

[0011] Preferably, a weak groove is prefabricated on the outer circumference of the penetration rod body.

[0012] Preferably, the weak groove is a V-shaped groove, a serrated groove or a rectangular groove.

[0013] Better, the length of the weak groove engraved on the rod body ,in,

[0014]

[0015]

[0016] in, is a coefficient related to the material properties of the penetrating rod, 、 、 and 、 、 It is the density, pressure and wave velocity of the shock wave penetrating the rod body and target plate material after transmission.

[0017] Preferably, the penetration rod body has a tensile strength of not less than 1000MPa and an impact energy of not less than 30 , made of high entropy alloy with an elongation at break of not less than 8%.

[0018] The best confining pressure peak cutting structure adopts a compression rate of not less than 20% and an energy absorption density of not less than 150 Made of metal material.

[0019] Preferably, the outer diameter of the confining pressure peak-cutting structure is 0.7 to 0.9 times the outer diameter of the penetration rod; the thickness of the confining pressure peak-cutting structure is h satisfy:

[0020]

[0021] in, P is the pressure transmitted into the active material; λ It is the activation factor of the active core in the confining pressure peak-cutting structure; is the pressure of the shock wave at the confining pressure peak-cutting structure; α is the shock wave attenuation coefficient, which is related to the material of the confining pressure peak-cutting structure.

[0022] Preferably, when there are multiple explosion damage sections, the high-threshold active core adopts a high-energy, highly insensitive polymer-based fluoropolymer active material with a theoretical energy content of not less than 7MJ / kg and an activation threshold greater than 2GPa; the low-threshold active core adopts a high-energy, sensitized polymer-based fluoropolymer active material with a theoretical energy content of not less than 7MJ / kg and an activation threshold less than 900MPa.

[0023] Preferably, the activation threshold of the active material is determined according to the projectile-target interaction conditions, satisfying the following relationship:

[0024]

[0025] in, is the internal pressure of the active material, is the initial density of the explosion structure, is the sound velocity of the active material, is the empirical coefficient, v is the speed at which the explosive structure collides with the target plate, is the particle velocity in the target plate, is the equivalent shock wave attenuation factor, is the equivalent shock wave attenuation length.

[0026] Beneficial effects:

[0027] The active explosive structure of the present invention, through the mutual combination of a high-threshold active core, a low-threshold active core, a high-entropy alloy penetration rod and a confining pressure peak-cutting structure, can achieve layer-specific / depth-specific explosive damage to multi-layer large ship targets based on the non-self-sustaining activation explosion characteristics of the active material without the need for fuses or explosives, breaking through the limitations of the influence of high overloads during launch and impact on the fuses and charges of traditional explosive structures, and providing an effective technical approach for high-speed / high-impact speed explosive structures to efficiently and reliably exert layer-specific / depth-specific damage effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the explosive structure of the present invention is shown when it is necessary to produce layer-specific damage between the 1st-2nd and 5th-6th target plates in order to penetrate the six-layer target plate.

[0029] Figure 2 A schematic diagram of the explosive structure of the present invention is shown when it is necessary to produce layer-specific damage between the 4th-5th and 5th-6th target plates in order to penetrate the six-layer target plate.

[0030] Figure 3 It is a schematic diagram of the hood structure of the present invention.

[0031] Figure 4 It is a schematic diagram of the posture-adjusting quilt cap structure of the present invention.

[0032] Figure 5 It is a schematic diagram of the confining pressure peak cutting structure in the present invention.

[0033] Figure 6 Schematic diagram of the high-threshold active core structure of the present invention.

[0034] Figure 7 Schematic diagram of the low-threshold active core structure of the present invention.

[0035] Figure 8 Schematic diagram of the penetrating rod structure in the present invention.

[0036] Figure 9 The figure shows that when penetrating six target plates, it is necessary to produce fixed layer damage between the 1st-2nd and 5th-6th target plates. Figure 1 The effect of layer-specific damage on the structure shown.

[0037] Figure 10 The figure shows that when penetrating six target plates, it is necessary to produce fixed layer damage between the 4th-5th and 5th-6th target plates. Figure 2 The effect of layer-specific damage on the structure shown.

[0038] Among them, 1-wind cap, 2-attitude adjustment cap, 3-penetration rod, 4-confining pressure peak cutting structure, 5-high threshold active core, 6-low threshold active core. DETAILED DESCRIPTION

[0039] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0040] The present invention provides an explosive structure for realizing fixed layer / fixed depth explosion without a fuze charge, comprising a wind cap 1, a posture adjustment cap 2, a penetration rod 3, a confining pressure peak cutting structure 4 and an active core;

[0041] The penetrating rod 3 is cylindrical in shape with a large aspect ratio and a truncated oval head, which is used to ensure that the projectile can adjust its posture under conditions of large impact angle and large attack angle. The penetrating rod preferably has a tensile strength of not less than 1000 MPa and an impact energy of not less than 30 , high entropy alloy with elongation at break not less than 8%, such as CrMnFeCoNi, wait;

[0042] The posture adjustment cap 2 is installed on the head of the penetration rod body 4, the outer generatrix is ​​a pointed oval, and the inner generatrix is ​​the same shape as the head of the penetration rod body 4, which is a truncated oval, and is used to straighten the attitude of the projectile during the tilting action target;

[0043] The hood 1 is a pointed oval thin-walled structure, mounted on the head of the penetration rod 4 and wrapped with the attitude adjustment cap 2, which is used to ensure that the explosive structure maintains a good aerodynamic shape during flight without affecting the penetration process of the explosive structure; the geometric shape of the hood 1 is controlled by parameters such as thickness, curvature radius, and length, and the thickness is 0.01 to 0.03 times the diameter of the explosive structure;

[0044] The wind cap 1, the posture adjustment cap 2 and the truncated oval head of the penetration rod 4 constitute the head of the explosion structure;

[0045] The active cores are placed within the penetrating rod 3, forming the explosive damage section of the explosive structure. The location and number of the active cores are determined based on the target characteristics and damage requirements. The activation threshold of each active core decreases from the head to the tail of the penetrating rod 3.

[0046] The confining pressure peak-cutting structure 4 is wrapped around the outside of the active core. On the one hand, it forms a confining pressure constraint on the active core material. On the other hand, it reduces the high-peak short-time load generated by the penetration rod 3 into a low-peak long-time load during the penetration of the target, thereby preventing the active core inside from prematurely activating and reacting and exploding.

[0047] The outer diameter of the confining pressure peak-cutting structure is 0.7 to 0.9 times the outer diameter of the penetration rod, realizing efficient explosive disintegration of the explosion damage section in the target specific compartment / position.

[0048] The confining pressure peak cutting structure is preferably made of high compression rate and high energy absorption metal material (compression rate is not less than 20%, energy absorption density is not less than 150 ) such as foam metals (aluminum foam, titanium foam, etc.), dense porous metamaterials (porous ceramics, porous carbon materials, etc.); the thickness of the confining pressure peak-cutting structure should be determined based on the high-speed target characteristics of the penetrating rod and the load evolution characteristics within the penetrating rod. The shock wave decays exponentially in the confining pressure peak-cutting structure. The structure's thickness should ensure that the active material activates, reacts, and explodes in a timely manner. The pressure transmitted into the active material should satisfy the following relationship:

[0049]

[0050] Where, h is the thickness of the confining pressure peak-cutting structure, α is the shock wave attenuation coefficient, which is related to the material of the confining pressure peak-cutting structure. is the pressure at the shock wave pressure-cutting peak structure, λ It is the activating factor of active materials.

[0051] The penetration rod 3 is excluding the explosive damage section with built-in active core, and the remaining penetration rod is the penetration damage section of the explosive structure. According to the specific conditions of the target plate, the penetration damage section can be located in front of all the explosive damage sections, such as Figure 1 As shown, it can also be located between the explosion damage sections, such as Figure 2 shown.

[0052] The high-threshold active core is cylindrical and constructed from a high-energy, high-insensitivity (theoretical energy content no less than 7 MJ / kg, activation threshold greater than 2 GPa) polymeric fluoropolymer-based active material. Key parameters such as the outer envelope size and theoretical energy content of the high-threshold active core should be determined based on target damage requirements. Optimally, the high-threshold active core can utilize a PTFE / Al / W formulation.

[0053] The low threshold active core is cylindrical and uses a high energy sensitization (theoretical energy content is not less than 7MJ / kg, activation threshold is less than 900MPa) polymeric fluoropolymer-based active material; the key parameters of the low threshold active core, such as outer envelope size and theoretical energy content, should be determined in combination with the target damage requirements. Preferably, the low threshold active core can be used Formula system.

[0054] Preferably, the activation threshold of the active material should be determined according to the projectile-target interaction conditions and should satisfy the following relationship:

[0055]

[0056] Where, v is the speed at which the explosive structure collides with the target plate, is the particle velocity in the target plate, is the sound velocity of the active material, s is a constant, is the initial density of the explosion structure, is the equivalent shock wave attenuation factor, is the equivalent shock wave attenuation length.

[0057] A weak groove can be set on the outer circumference of the penetrating rod body 3 of the penetration and damage section, and the penetrating rod body 3 can be prefabricated into multiple sections. The fragmentation and destruction of the front section of the penetrating rod body have little effect on the rear section of the rod body, thereby regulating the destructive behavior of the penetrating and damage section of the rod body during the process of penetrating the target.

[0058] Preferably, the weakened groove is sawtooth-shaped, the sawtooth is an equilateral triangle, the top angle is 60°, and the direction angle is 60°.

[0059] The length of the weak groove (penetration section) engraved on the penetration rod body is related to conditions such as the target plate material, target plate thickness, and impact speed.

[0060] The shock wave pressure generated by the impact of the penetrating rod on a single-layer ship target plate can be calculated using the one-dimensional shock wave theory:

[0061]

[0062]

[0063] Where, is a coefficient related to material properties, 、 、 and 、 、 It is the density, pressure and wave velocity in the fragments and target plate materials after the shock wave passes.

[0064] Taking into account the shock wave attenuation effect and the rarefaction wave unloading effect, the length of the penetrating rod that breaks into pieces after impacting a single-layer target plate can be written as:

[0065]

[0066] The axial residual velocity of the explosive structure after penetrating the single-layer target plate Can be achieved through Demre The formula is given:

[0067]

[0068] Furthermore, the length of the penetrating rod body with the weak groove engraved therein that breaks through the multi-layer target plate (the length of the penetrating section that breaks through the multi-layer target plate) can be approximately calculated by repeating the above steps.

[0069] The following is an explanation using a specific example.

[0070] Penetrate six target plates and produce fixed layer damage between the 1st-2nd and 5th-6th target plates. Figure 1 The blasting structure shown, from the head to the back, consists of the high-threshold blast damage section I (with a built-in high-threshold active core), the penetration damage section (with a serrated weak groove prefabricated on the outer circumference) and the low-threshold blast damage section II (with a built-in low-threshold active core).

[0071] like Figure 3 As shown, the hood is a pointed oval thin-walled structure with a bottom diameter of 170mm, a hood length of 260mm, a side wall curvature radius of 680mm, and a wall thickness of 3mm. The hood material is LY12 aluminum alloy with an elastic modulus of 72GPa, a tensile strength of 460MPa, a yield strength of 380MPa, and a density of 2.78 .

[0072] like Figure 4 As shown, the diameter of the bottom end of the posture adjustment cap is 170mm, the length is 160mm, the outer busbar curvature radius is 234mm, the inner busbar curvature radius is 192mm, and the top diameter of the inner cavity is 20mm. The posture adjustment cap is made of brass with a density of 8.9. , tensile strength 210MPa, yield strength 33MPa, hardness 37 HBS.

[0073] like Figure 5 As shown, the outer envelope size of the confining pressure peak cutting structure is , the inner cavity size is , wall thickness is 10mm, material is small pore natural cast aluminum foam, density is 0.4 , dynamic platform stress is 1.37MPa, and mass specific energy absorption is 2.89kJ / kg.

[0074] like Figure 6 As shown, the high threshold active core is cylindrical and the outer envelope size is The material formula is PTFE 66.2wt.% / Al 23.8 wt.% / W 10.0 wt.%, which is prepared by dry mixing, hot pressing and vacuum sintering. The density is 2.71 The theoretical energy content is 7.74MJ / kg, the activation pressure threshold is 2.46GPa, and it is tightly fitted into the inner cavity of the confining pressure peak-cutting structure.

[0075] like Figure 7 As shown, the low threshold active core is cylindrical and the outer envelope size is The material formula is PTFE 66.2wt.% / Al 23.8 wt.% / TiH2 10.0 wt.%, which is prepared by dry mixing, hot pressing and vacuum sintering. The density is 2.41 The theoretical energy content is 8.82MJ / kg, the activation pressure threshold is 762MPa, and it is tightly fitted into the inner cavity of the confining pressure peak-cutting structure.

[0076] like Figure 8 As shown, the length of the penetrating rod is 785mm and the outer diameter is 170mm. The geometric shape of the outer envelope of the truncated oval head is consistent with the geometric shape of the inner busbar of the attitude adjustment cap. The length of the truncated oval head is 100mm, the radius of curvature of the truncated oval head is 192mm, and the diameter of the truncated head is 20mm. The geometric centers of the two short cylindrical cavities in the penetrating rod are 238mm and 655mm away from the rod head respectively. Seven sawtooth prefabricated grooves are engraved in the middle of the rod body. The bottom vertex of the first groove is 352mm away from the rod head, and the distance between the bottom vertices of each two grooves is 30mm. The sawtooth groove is an equilateral triangle with a top angle of 60°, a direction angle of 90°, and a depth of 9.8mm. The penetrating rod material is a CoCrFeMnNi high entropy alloy prepared by additive manufacturing technology. It has a quasi-static yield strength of 565MPa, a dynamic yield strength greater than 1000MPa, and an elongation at break of 10%.

[0077] When the explosive structure impacts 6 layers of simulated ship target plates (the 6 layers of target plates are made of 921A, 20mm thick, and the distance between each layer of target plates is 2m) at a speed of 800m / s, the working principle is as follows: Figure 9 As shown, the details are as follows:

[0078] When the explosive structure flies at high speed, the pointed oval-shaped hood 1 creates a favorable aerodynamic shape for the projectile, significantly reducing its flight resistance and maintaining a high impact velocity at the end of its trajectory. When the explosive structure contacts the six-layer target at a high speed and angle, the hood 1 first collides with the first layer. Because the hood 1 is a thin-walled structure made of LY12 aluminum alloy, it has little penetration capability and will quickly shatter and disperse under the impact load.

[0079] Subsequently, the attitude adjustment cap 2 collides with the first target plate. Since the attitude adjustment cap 2 is made of a relatively soft brass material, it will be squeezed and deformed during the collision with the first target plate. Under the action of the rotational torque of the blasting structure, the impact angle is reduced, and the impact posture of the blasting structure is adjusted so that the structure can interact with the target plate at a smaller impact angle.

[0080] As the posture adjustment cap 2 is deformed and destroyed, the penetrating rod 3 subsequently collides with the first layer of target plates. Since the head of the penetrating rod 3 is a truncated oval, it further generates a rotational torque after colliding with the target plate, which further reduces the impact angle of the explosive structure, making it more conducive to the subsequent interaction of the explosive structure with the multi-layer target plates in a better posture. During the collision of the penetrating rod 3 with the first layer of target plates, a strong impact load and shock wave are generated. On the one hand, it causes the head of the high-entropy alloy penetrating rod 3 to fragment and be destroyed, and on the other hand, it propagates along the axial direction of the penetrating rod. Due to the presence of the foam aluminum material confining pressure peak clipping structure 4, the load peak transmitted to the active core 5 during the impact of the rod on the first layer of target plates is weakened, thereby avoiding the premature activation of the active core 5 and the explosive energy release.

[0081] After penetrating the first layer of target plates, the high-threshold explosion damage section I filled with the confined pressure peak-cutting structure 4 and the high-threshold active core 5 enters the space between the 1-2 target plates, the high-entropy alloy shell outside the short cylindrical cavity shatters, the stress of the confined pressure peak-cutting structure 4 is released and shattered, and the shock wave is transmitted to the active core 5, reaching the activation threshold of the high-threshold active core 5, causing it to activate and explode, producing an explosion damage effect between the 1-2 target plates.

[0082] After this, the remaining structure continues to attack the subsequent target plates, relying on the penetration damage segment of the penetration rod 3. Because the penetration damage segment has a pre-formed weak link with circumferential grooves and is made of a relatively brittle high-entropy alloy, the penetration rod shatters a section each time it penetrates a target plate, and it penetrates the third, fourth, and fifth target plates in sequence.

[0083] After the remaining structure enters the space between the 5th and 6th target plates, the high-entropy alloy shell outside the short cylindrical cavity of the remaining explosion damage section shatters, the stress of the confining pressure peak-cutting structure 4 is released and shattered, and the shock wave is transmitted to the low-threshold active core 6, reaching the activation threshold of the low-threshold active core 6, causing it to activate and explode, producing an explosion damage effect between the 1st and 2nd target plates.

[0084] Based on the above principles, the target characteristics such as the number of target plate layers, target plate thickness, and damage position requirements can be combined to adjust the explosion damage section position, penetration rod length, groove depth, number, position, active core activation threshold and energy content, such as Figure 2 As shown, when penetrating six target plates, fixed layer damage will occur between the 4th-5th and 5th-6th target plates. The working principle is as follows: Figure 10 Through the above-mentioned process, it is possible to achieve explosive damage effects at a specific target compartment, location, and depth without the presence of a fuse or charge.

[0085] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An explosive structure without a fuze charge for achieving fixed-layer or fixed-depth explosion, characterized in that: include: A wind cap (1), a posture adjustment cap (2), a penetration rod (3), a confining pressure peak-cutting structure (4), and an active core; The wind cap (1) and the attitude adjustment cap (2) are installed on the head of the penetration rod body (3), and the attitude adjustment cap (2) is used to adjust the attitude of the penetration structure when it hits the target; The active core is built into the penetrating rod (3) to form an explosive damage section of the explosive structure; the portion of the penetrating rod (3) without the built-in active core forms the penetrating damage section of the explosive structure; based on the fixed layer or fixed depth damage target of the target plate, the position and number of the explosive damage section and the penetrating damage section are adjusted; when there are multiple explosive damage sections, the activation threshold of the built-in active core decreases in sequence from the head to the tail of the penetrating rod (3); The confining pressure peak-cutting structure (4) is wrapped around the outside of the active core, and is used to form a confining pressure constraint on the active core and reduce the high peak short-time load generated by the penetrating rod (3) during the process of penetrating the target into a low peak long-time load.

2. The structure according to claim 1, characterized in that A weak groove is prefabricated on the outer circumference of the penetration rod body (3).

3. The structure according to claim 2, characterized in that The weak groove is a V-shaped groove, a sawtooth groove or a rectangular groove.

4. The structure according to any one of claims 1 to 3, characterized in that: The penetration rod (3) has a tensile strength of not less than 1000 MPa and an impact energy of not less than 30 J / cm 2 , made of high entropy alloy with an elongation at break of not less than 8%.

5. The structure according to claim 1, wherein: The confining pressure peak cutting structure (4) adopts a compression rate of not less than 20% and an energy absorption density of not less than 150MJ / m 3 Made of metal material.

6. The structure according to claim 1 or 5, characterized in that The outer diameter of the confining pressure peak-cutting structure (4) is 0.7 to 0.9 times the outer diameter of the penetration rod (3); the thickness of the confining pressure peak-cutting structure (4) is h satisfy: in, P is the pressure transmitted into the active material; λ is the activation factor of the active core in the confining pressure peak-cutting structure (4); P 0 is the pressure of the shock wave at the confining pressure peak-cutting structure (4); α is the shock wave attenuation coefficient, which is related to the material of the confining pressure peak-cutting structure.

7. The structure according to claim 1, wherein: When there are multiple explosion damage sections, the high-threshold active core adopts a high-energy, highly insensitive polymer-based fluoropolymer active material with a theoretical energy content of not less than 7MJ / kg and an activation threshold greater than 2Gpa; the low-threshold active core adopts a high-energy, sensitized polymer-based fluoropolymer active material with a theoretical energy content of not less than 7MJ / kg and an activation threshold less than 900MPa.

8. The structure according to claim 1 or 7, characterized in that The activation threshold of the active material is determined according to the projectile-target interaction conditions and satisfies the following relationship: in, P p is the internal pressure of the active material, is the initial density of the explosion structure, c 0 is the sound velocity of the active material, s p is the empirical coefficient, v is the speed at which the explosive structure collides with the target plate, u t is the particle velocity in the target plate, is the equivalent shock wave attenuation factor, l is the equivalent shock wave attenuation length.

Images