A method and device for calculating the spacing distance between layered components penetrating multi-layer steel plates

Abstract

The present invention provides a method and device for calculating the spacing distance between layered components that penetrate multi-layer steel plates. The method relates to the field of penetration dynamics and adopts a multi-layer front-stage kinetic energy component design. Each layer of components destroys the target steel plate at the corresponding layer. By accurately designing the spacing distance between each layer of the front-stage kinetic energy components, each layer of kinetic energy components sequentially destroys the corresponding target steel target, thereby achieving the purpose of penetrating the multi-layer steel plates and allowing the following projectile to pass through without damage. While the kinetic energy of the front-stage components penetrates the steel plates and forms bullet holes, the rear-stage kinetic energy components and the projectile just follow up to the surface of the target steel plate and smoothly penetrate the target from the bullet hole position, thereby achieving the effect of the projectile delaying the target impact and following the target penetration. The present invention can accurately control the target impact time of the rear-stage components and the projectile, so that the front-stage kinetic energy components of each level respectively destroy the target target at the corresponding layer, achieving the effect of penetrating the multi-layer steel plates. The principle of the present invention is simple and can achieve the effect of penetration and destruction of multi-layer steel plates.

Description

Technical Field

[0001] The present invention relates to the field of penetration dynamics, and in particular to a method for calculating the spacing distance between layered components penetrating a multi-layer steel plate. Background Art

[0002] High-speed armor penetration is an instantaneous, high-impact, and high-overload process, posing a significant threat to the projectile's structural strength and the viability of its functional components. To successfully penetrate the target's steel plate and improve its survival rate, projectiles are sometimes designed with a staged structure, where the front stage components are responsible for kinetic impact, creating a crater or perforation, while the rear stage components follow. Numerous research reports and patent applications have been published on this topic.

[0003] So far, there is a lack of multi-layer armor-piercing front kinetic energy component design, and continued penetration relies on the residual kinetic energy after the single-stage kinetic energy component hits the first layer of steel target, which poses a great challenge to the effective survival of the projectile. Summary of the Invention

[0004] To overcome the shortcomings of the existing technology, the present invention provides a method and device for calculating the spacing between layered components required to penetrate multi-layer steel plates. The goal of this invention is to precisely design the spacing between each layer of pre-positioned kinetic energy components so that each layer of kinetic energy components sequentially destroys the corresponding target steel, achieving the goal of penetrating the multi-layer steel plates while allowing the accompanying projectile to pass through undamaged.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] Step 1: The first layer of kinetic components destroys the first layer of steel plates;

[0007] See Figure 2 At the initial moment, the front multi-layer kinetic energy component (1) and the following projectile (2) as a whole contact the surface of the first layer of steel plate at a speed of V0;

[0008] When the first layer of kinetic energy components moves from the front to the back of the first layer of target plate after time t1, the components of this layer disintegrate, the target plate is penetrated and a bullet hole 1 with the same area as the components is formed; the second and third layers of kinetic energy components and the subsequent follow-up projectile follow as a whole with a delayed time, and at this time they just reach the bullet hole position of the first layer of target plate. The time they move is:

[0009] t 2+3+丸 =(D1+L1) / V0 (1)

[0010] D1 is the interlayer distance between the first layer kinetic energy component and the second layer kinetic energy component, L1 is the thickness of the first layer kinetic energy component, and since the time of the two is equal, that is: t1 = t 2+3+丸 , substitute formula (1) to get:

[0011] t1=(D1+L1) / V0

[0012] Simplify the distance between the first layer components and the second layer components to obtain:

[0013] D1=V0t1-L1 (2)

[0014] Where t1 is the time taken by the front first layer component to move from the front surface of the first target plate to the back surface of the target plate obtained through numerical simulation.

[0015] Step 2: The second layer of kinetic components destroys the second layer of steel plates

[0016] After the first layer of components destroys the first layer of steel plate, the subsequent components and projectiles pass through the bullet hole unimpeded and hit the second layer of steel plate at V0 speed. Figure 2 When the second-level component reaches the back of the second layer of steel plate, the component of this layer disintegrates, the target plate is penetrated and a bullet hole 2 with the same area as the component is formed; the third-layer kinetic energy component and the projectile follow up as a whole with a delayed delay, and at this time just reach the position of the bullet hole 2 of the second layer of target plate.

[0017] The total time t for the second layer component to move from the initial position to the back of the second layer target plate 2总 for:

[0018] t 2总 =(D1+L1+δ1+Δ1) / V0+t2 (3)

[0019] Among them, Δ1 is the interlayer spacing between the first and second steel plates, δ1 is the thickness of the first steel plate, and t2 is the time it takes for the front second layer component to move from the front surface of the second target plate to the back of the target plate obtained through numerical simulation.

[0020] The total time t for the third layer component to move from the initial position to the bullet hole position on the front of the second layer target plate 3+丸 for:

[0021] t 3+丸 =(D2+L2+D1+L1+δ1+Δ1) / V0 (4)

[0022] Where D2 is the interlayer distance between the second and third kinetic energy components, L2 is the thickness of the second kinetic energy component. Since the phenomena described by formula (3) and formula (4) occur simultaneously, t 2总 =t 3+丸 ,Right now:

[0023] (D1+L1+δ1+Δ1) / V0+t2=(D2+L2+D1+L1+δ1+Δ1) / V0

[0024] Simplifying, we can get the distance between the second-layer kinetic energy components and the third-layer kinetic energy components:

[0025] D2=V0t2-L2 (5)

[0026] Step 3: The third layer of kinetic components destroys the third layer of steel plates

[0027] After the second-layer component destroys the second layer of steel, the third-layer component and the projectile pass through the bullet hole unimpeded and collide with the third layer of steel at a speed of V0. When the third-layer component reaches the back of the third layer of steel, the component disintegrates, the target plate is penetrated, and a bullet hole 3 with the same area as the component is formed; the remaining subsequent-layer components follow the advancing projectile and just reach the location of bullet hole 3 in the third layer of target plate.

[0028] The total time t for the third layer component to move from the initial position to the back of the third layer target plate 3总 for:

[0029] t 3总 =(D2+L2+D1+L1+δ1+Δ1+δ2+Δ2) / V0+t3 (6)

[0030] t3 is the time taken by the front third layer component to move from the front surface of the third target plate to the back surface of the target plate, obtained through numerical simulation.

[0031] The total time t for the subsequent projectile to move from the initial position to the bullet hole position on the front of the third target plate 丸 for:

[0032] t 丸 =(D3+L3+D2+L2+D1+L1+δ1+Δ1+δ2+Δ2) / V0 (7)

[0033] Since the phenomena described by formula (6) and formula (7) occur simultaneously, t 3总 =t 丸 ,Right now:

[0034] (D2+L2+D1+L1+δ1+Δ1+δ2+Δ2) / V0+t3=(D3+L3+D2+L2+D1+L1+δ1+Δ1+δ2+Δ2) / V0

[0035] Simplifying, we can get the distance between the third-layer kinetic energy component and the following projectile:

[0036] D3=V0t3-L3 (8)

[0037] Step 4: Combining formula (2), formula (5), and formula (8), the interlayer spacing D between the multi-layer kinetic energy components can be obtained: n The value of is:

[0038] D n =V0t n -L n (9)

[0039] After accurately calculating the inter-layer spacing between the kinetic energy components, appropriate mechanisms are used to connect the components and projectiles at each level to form a delayed-following projectile that can penetrate multiple layers of steel plates.

[0040] A device adopts the above-mentioned method for calculating the spacing distance between layered components that penetrate multi-layer steel plates. The projectile is divided into a front kinetic energy component and a follow-up projectile. The front kinetic energy component is a combination of multi-layer components. The number of layers of the front kinetic energy component is the same as the number of layers of the target steel plate. The spacing distance between each layer of the front kinetic energy component forms a time difference between the successive impacts on the target. After the front layer kinetic energy component forms a perforation in the target plate, the combination of the rear stage kinetic energy component and the projectile moves to the bullet hole position of the target plate and passes through the bullet hole without damage, thereby realizing the delay + follow-up function.

[0041] The beneficial effect of the present invention lies in its ability to precisely control the timing of the impact of the subsequent components and the projectile, allowing the kinetic energy components at each stage to destroy the target at the corresponding layer, achieving the effect of penetrating multiple layers of steel plates. The present invention has a simple principle and can achieve the desired penetration and destruction effect on multiple layers of steel plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 Schematic diagram of the projectile of the present invention penetrating into a multi-layer steel plate.

[0043] Figure 2 A schematic diagram showing the meaning of each parameter in the calculation process.

[0044] Among them, 1-front multi-layer kinetic energy component, 2-following projectile, 3-multi-layer steel plate, L1-thickness of the first layer kinetic energy component, L2-thickness of the second layer kinetic energy component, L3-thickness of the third layer kinetic energy component, D1-interlayer spacing between the first layer kinetic energy component and the second layer kinetic energy component, D2-interlayer spacing between the second layer kinetic energy component and the third layer kinetic energy component, D3-interlayer spacing between the third layer kinetic energy component and the tip of the following projectile, Δ1-interlayer spacing between the first layer steel plate and the second layer steel plate, Δ2-interlayer spacing between the second layer steel plate and the third layer steel plate, δ1-thickness of the first layer steel plate, δ2-thickness of the second layer steel plate, δ3-thickness of the third layer steel plate. DETAILED DESCRIPTION

[0045] The present invention will be further described below with reference to the accompanying drawings and examples.

[0046] like Figure 1 , a method for calculating the spacing between layered components that penetrate multiple layers of steel plates, wherein a projectile is composed of a front-mounted multiple-layer kinetic energy component (1) and a follow-up projectile (2), and the projectile strikes three layers of steel plates (3) at a speed of V0. The present invention does not focus on the specific shape and connection method of each layer of kinetic energy component, but focuses on the inter-layer spacing between the components. Figure 2As shown in the figure, an example of penetrating three layers of steel plates is given to illustrate the process of components at each level destroying multiple layers of steel plates, as well as the method for calculating the interlayer spacing between the three layers of components.

[0047] Step 1: The first layer of kinetic components destroys the first layer of steel plates

[0048] See Figure 2 At the initial moment, the front multi-layer kinetic energy component (1) and the following projectile (2) as a whole contact the surface of the first layer of steel plate at a speed of V0;

[0049] When the first layer of kinetic energy components moves from the front to the back of the first layer of target plate after time t1, the components of this layer disintegrate, the target plate is penetrated and a bullet hole 1 with the same area as the components is formed; the second and third layers of kinetic energy components and the subsequent follow-up projectile follow as a whole with a delayed time, and at this time they just reach the bullet hole position of the first layer of target plate. The time they move is:

[0050] t 2+3+丸 =(D1+L1) / V0 (1)

[0051] D1 is the interlayer distance between the first layer kinetic energy component and the second layer kinetic energy component, L1 is the thickness of the first layer kinetic energy component, and since the time of the two is equal, that is: t1 = t 2+3+丸 , substitute formula (1) to get:

[0052] t1=(D1+L1) / V0

[0053] Simplify the distance between the first layer components and the second layer components to obtain:

[0054] D1=V0t1-L1 (2)

[0055] Where t1 is the time taken by the front first layer component to move from the front surface of the first target plate to the back surface of the target plate obtained through numerical simulation.

[0056] Step 2: The second layer of kinetic components destroys the second layer of steel plates

[0057] After the first layer of components destroys the first layer of steel plate, the subsequent components and projectiles pass through the bullet hole unimpeded and hit the second layer of steel plate at V0 speed. Figure 2 When the second-level component reaches the back of the second layer of steel plate, the component of this layer disintegrates, the target plate is penetrated and a bullet hole 2 with the same area as the component is formed; the third-layer kinetic energy component and the projectile follow up as a whole with a delayed delay, and at this time just reach the position of the bullet hole 2 of the second layer of target plate.

[0058] The total time t for the second layer component to move from the initial position to the back of the second layer target plate 2总 for:

[0059] t 2总=(D1+L1+δ1+Δ1) / V0+t2 (3)

[0060] Among them, Δ1 is the interlayer spacing between the first and second steel plates, δ1 is the thickness of the first steel plate, and t2 is the time it takes for the front second layer component to move from the front surface of the second target plate to the back of the target plate obtained through numerical simulation.

[0061] The total time t for the third layer component to move from the initial position to the bullet hole position on the front of the second layer target plate 3+丸 for:

[0062] t 3+丸 =(D2+L2+D1+L1+δ1+Δ1) / V0 (4)

[0063] Where D2 is the interlayer distance between the second and third kinetic energy components, L2 is the thickness of the second kinetic energy component. Since the phenomena described by formula (3) and formula (4) occur simultaneously, t 2总 =t 3+丸 ,Right now:

[0064] (D1+L1+δ1+Δ1) / V0+t2=(D2+L2+D1+L1+δ1+Δ1) / V0

[0065] Simplifying, we can get the distance between the second-layer kinetic energy components and the third-layer kinetic energy components:

[0066] D2=V0t2-L2 (5)

[0067] Step 3: The third layer of kinetic components destroys the third layer of steel plates

[0068] After the second-layer component destroys the second layer of steel, the third-layer component and the projectile pass through the bullet hole unimpeded and collide with the third layer of steel at a speed of V0. When the third-layer component reaches the back of the third layer of steel, the component disintegrates, the target plate is penetrated, and a bullet hole 3 with the same area as the component is formed; the remaining subsequent-layer components follow the advancing projectile and just reach the location of bullet hole 3 in the third layer of target plate.

[0069] The total time t for the third layer component to move from the initial position to the back of the third layer target plate 3总 for:

[0070] t 3总 =(D2+L2+D1+L1+δ1+Δ1+δ2+Δ2) / V0+t3 (6)

[0071] t3 is the time taken by the front third layer component to move from the front surface of the third target plate to the back surface of the target plate, obtained through numerical simulation.

[0072] The total time tpel for the subsequent follow-up projectile to move from the initial position to the bullet hole position on the front of the third target plate is:

[0073] t 丸 =(D3+L3+D2+L2+D1+L1+δ1+Δ1+δ2+Δ2) / V0 (7)

[0074] Since the phenomena described by formula (6) and formula (7) occur simultaneously, t 3总 =t 丸 ,Right now:

[0075] (D2+L2+D1+L1+δ1+Δ1+δ2+Δ2) / V0+t3=(D3+L3+D2+L2+D1+L1+δ1+Δ1+δ2+Δ2) / V0

[0076] Simplifying, we can get the distance between the third-layer kinetic energy component and the following projectile:

[0077] D3=V0t3-L3 (8)

[0078] Combining formula (2), formula (5), and formula (8), it can be concluded that the value of the interlayer spacing Dn between multi-layer kinetic energy components is:

[0079] D n =V0t n -L n (9)

[0080] After accurately calculating the inter-layer spacing between the kinetic energy components, appropriate mechanisms are used to connect the components and projectiles at each level to form a delayed-following projectile that can penetrate multiple layers of steel plates.

[0081] A device adopts the above-mentioned method for calculating the spacing distance between layered components that penetrate multi-layer steel plates. The projectile is divided into a front kinetic energy component and a follow-up projectile. The front kinetic energy component is a combination of multi-layer components. The number of layers of the front kinetic energy component is the same as the number of layers of the target steel plate. The spacing distance between each layer of the front kinetic energy component forms a time difference between the successive impacts on the target. After the front layer kinetic energy component forms a perforation in the target plate, the combination of the rear stage kinetic energy component and the projectile moves to the bullet hole position of the target plate and passes through the bullet hole without damage, thereby realizing the delay + follow-up function.

[0082] The key to the present invention is determining the optimal delay between the subsequent components and the projectile when the front-layer components impact the target. The present invention analyzes and calculates the process by which each component of the warhead destroys the corresponding layer of steel plate, deriving a method for determining the interlayer spacing between the components of the front-layer.

Claims

1. A method for calculating the distance between layered components penetrating multi-layer steel plates, characterized in that The steps include: Step 1: The first layer of kinetic components destroys the first layer of steel plates; At the initial moment, the front multi-layer kinetic energy component (1) and the following projectile (2) as a whole contact the surface of the first layer of steel plate at a speed of V0; When the first layer of kinetic energy components moves from the front to the back of the first layer of target plate after time t1, the components of this layer disintegrate, the target plate is penetrated and a bullet hole 1 with the same area as the components is formed; the second and third layers of kinetic energy components and the subsequent follow-up projectile follow as a whole with a delayed time, and at this time they just reach the bullet hole position of the first layer of target plate. The time they move is: t 2+3+丸 =(D1+L1) / V0 (1) D1 is the interlayer distance between the first layer kinetic energy component and the second layer kinetic energy component, L1 is the thickness of the first layer kinetic energy component, and since the time of the two is equal, that is: t1 = t 2+3+丸 , substitute formula (1) to get: t1=(D1+L1) / V0 Simplify the distance between the first layer components and the second layer components to obtain: D1=V0t1-L1 (2) Where t1 is the time taken by the numerical simulation for the front first layer component to move from the front surface of the first target plate to the back surface of the target plate; Step 2: The second layer of kinetic components destroys the second layer of steel plates After the first-layer component destroys the first layer of steel plate, the subsequent components and projectile pass through the bullet hole unimpeded and hit the second layer of steel plate at a speed of V0. When the second-layer component reaches the back of the second layer of steel plate, the component on that layer disintegrates, the target plate is penetrated, and a bullet hole 2 with the same area as the component is formed; the third-layer kinetic energy component and projectile follow up as a whole with a delayed delay, and at this time just reach the bullet hole 2 position of the second layer of target plate; The total time t for the second layer component to move from the initial position to the back of the second layer target plate 2总 for: t 2总 =(D1+L1+δ1+Δ1) / V0+t2 (3) Wherein, Δ1 is the interlayer spacing between the first and second steel plates, δ1 is the thickness of the first steel plate, and t2 is the time taken by the numerical simulation for the front second layer component to move from the front surface of the second target plate to the back surface of the target plate; The total time t for the third layer component to move from the initial position to the bullet hole position on the front of the second layer target plate 3+丸 for: t 3+丸 =(D2+L2+D1+L1+δ1+Δ1) / V0 (4) Where D2 is the interlayer distance between the second and third kinetic energy components, L2 is the thickness of the second kinetic energy component. Since the phenomena described by formula (3) and formula (4) occur simultaneously, t 2总 =t 3+丸 ,Right now: (D1+L1+δ1+Δ1) / V0+t2=(D2+L2+D1+L1+δ1+Δ1) / V0 Simplifying, we can get the distance between the second-layer kinetic energy components and the third-layer kinetic energy components: D2=V0t2-L2 (5) Step 3: The third layer of kinetic components destroys the third layer of steel plates After the second-layer component destroys the second-layer steel plate, the third-layer component and the projectile pass through the bullet hole unimpeded and hit the third-layer steel plate at a speed of V0; when the third-level component reaches the back of the third-layer steel plate, the component on this layer disintegrates, the target plate is penetrated, and a bullet hole 3 with the same area as the component is formed; the remaining subsequent-stage projectile follows and just reaches the bullet hole 3 position of the third-layer target plate at this time; The total time t for the third layer component to move from the initial position to the back of the third layer target plate 3总 for: t 3总 =(D2+L2+D1+L1+δ1+Δ1+δ2+Δ2) / V0+t3 (6) t3 is the time taken by the front third layer component to move from the front surface of the third target plate to the back surface of the target plate, obtained through numerical simulation; The total time t for the subsequent projectile to move from the initial position to the bullet hole position on the front of the third target plate 丸 for: t 丸 =(D3+L3+D2+L2+D1+L1+δ1+Δ1+δ2+Δ2) / V0 (7) Since the phenomena described by formula (6) and formula (7) occur simultaneously, t 3总 =t 丸 ,Right now: (D2+L2+D1+L1+δ1+Δ1+δ2+Δ2) / V0+t3=(D3+L3+D2+L2+D1+L1+δ1+Δ1+δ2+Δ2) / V0 Simplifying, we can get the distance between the third-layer kinetic energy component and the following projectile: D3=V0t3-L3 (8) Step 4: Combining formula (2), formula (5), and formula (8), we can derive the value of the interlayer spacing Dn between the multi-layer kinetic energy components as follows: D n =V0t n -L n (9) After accurately calculating the inter-layer spacing between the kinetic energy components, a mechanism is used to connect the components and projectiles at each level to form a delayed-following projectile that can penetrate multiple layers of steel plates.

2. A device utilizing the method for calculating the distance between layered components penetrating multi-layer steel plates according to claim 1, characterized in that: The device for calculating the distance between layered components that penetrate multi-layer steel plates comprises a projectile divided into a front kinetic energy component and a follow-up projectile. The front kinetic energy component is a combination of multi-layer components, and the number of layers of the front kinetic energy component is the same as the number of layers of the target steel plate. The distance between each layer of the front kinetic energy component forms a time difference between the successive impacts on the target, so that after the front layer kinetic energy component forms a perforation in the target plate, the combination of the rear stage kinetic energy component and the projectile moves to the bullet hole position of the target plate and passes through the bullet hole without damage, thereby realizing the delay + follow-up function.

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