Method and device for analyzing performance of warhead fragments

Abstract

The application discloses a performance analysis method of warhead fragments, comprising the following steps: determining a plurality of blasting information of different types of warheads under different detonation states; determining the influencing factors of different types of warheads on fragments under different detonation states based on the plurality of blasting information; correcting the first fragment mass distribution information, the first fragment initial velocity distribution information, the first fragment scattering direction information and the first fragment velocity attenuation information based on the influencing factors, so as to obtain the second fragment mass distribution information, the second fragment initial velocity distribution information, the second fragment scattering direction information and the second fragment velocity attenuation information; and generating a fragment power performance distribution model based on the second fragment mass distribution information, the second fragment initial velocity distribution information, the second fragment scattering direction information and the second fragment velocity attenuation information; the model is used for determining the fragment power parameters of a target warhead under a target detonation state. Meanwhile, the application also provides a performance analysis device of warhead fragments.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of ammunition warheads, and particularly relates to a performance analysis method and device for warhead fragments. BACKGROUND

[0002] In conventional ammunition, a cylindrical charge warhead is usually used. In the cylindrical charge shell, in order to control and adjust the power performance and effect of warhead fragments, the structure of the charge and the shell and the detonation mode usually need to be changed, so as to obtain the required fragment power performance. Due to the diversity of the structure of the charge and the shell and the detonation mode, there is no unified power analysis method for the initial power parameters of the fragments generated by such warheads, but accurate judgments of the power performance of the fragments of warheads with different charges and shell structures and detonation modes are often required in application. Therefore, a unified power analysis method for warhead fragments is needed. SUMMARY

[0003] In view of this, the embodiments of the application expect to provide a performance analysis method and device for warhead fragments.

[0004] The technical solution of the application is implemented as follows:

[0005] According to an aspect of the application, a performance analysis method for warhead fragments is provided, and the method comprises the following steps:

[0006] determining a plurality of first explosion information of different types of warheads under different detonation states, each type of warhead corresponding to a plurality of different detonation states;

[0007] determining the influence factors of the different types of warheads on fragments under different detonation states based on the plurality of first explosion information;

[0008] correcting preset first fragment mass distribution information, first fragment initial speed distribution information, first fragment scattering direction information and first fragment speed attenuation information based on the influence factors, to obtain second fragment mass distribution information, second fragment initial speed distribution information, second fragment scattering direction information and second fragment speed attenuation information;

[0009] generating a fragment power performance distribution model of a warhead based on the second fragment mass distribution information, the second fragment initial speed distribution information, the second fragment scattering direction information and the second fragment speed attenuation information; the fragment power performance distribution model is used to determine the fragment power parameters of a target warhead under a target detonation state.

[0010] In the above solution, the determination of the plurality of first explosion information of different types of warheads under different detonation states comprises a combination of at least two of the following information:

[0011] Determine the position information of the initiation point of different types of warheads under different detonation states, the eccentric angle information between the fragments and the charge structure on the warhead, the eccentric rate information between the initiation point and the charge structure on the warhead, the non-charge structure information on the warhead, and the end cap information of the initiation end and the non-initiation end on the warhead.

[0012] In the above scheme, the determination of the influence factors of different types of warheads on fragments under different detonation states based on the plurality of first blasting information comprises:

[0013] Fitting the plurality of first blasting information to obtain the influence factors of different types of warheads on fragments under different detonation states.

[0014] In the above scheme, the correction of the preset first fragment mass distribution information, first fragment initial velocity distribution information, first fragment scattering direction information and first fragment velocity attenuation information based on the influence factors to obtain the second fragment mass distribution information, second fragment initial velocity distribution information, second fragment scattering direction information and second fragment velocity attenuation information comprises:

[0015] Introducing the correction parameters corresponding to the influence factors into the first functions corresponding to the first fragment mass distribution information, the first fragment initial velocity distribution information, the first fragment scattering direction information and the first fragment velocity attenuation information respectively to obtain the second functions corresponding to the second fragment mass distribution information, the second fragment initial velocity distribution information, the second fragment scattering direction information and the second fragment velocity attenuation information respectively.

[0016] In the above scheme, the generation of the fragment power performance distribution model of the warhead based on the second fragment mass distribution information, the second fragment initial velocity distribution information, the second fragment scattering direction information and the second fragment velocity attenuation information comprises:

[0017] Based on the second functions corresponding to the second fragment mass distribution information, the second fragment initial velocity distribution information, the second fragment scattering direction information and the second fragment velocity attenuation information respectively, a rectangular coordinate system is established with the initiation point of the warhead as the origin, and a fragment power performance distribution model representing the fragment velocity and kinetic energy distribution trajectory line of the warhead is generated.

[0018] The method further comprises:

[0019] Determine the type information and the detonation state information of the target warhead;

[0020] Determine the second blasting information of the target warhead under the corresponding detonation state based on the type information and the detonation state information;

[0021] The second explosion information is taken as input information of the fragment power performance distribution model, so as to obtain a fragment power parameter of the target warhead under the corresponding explosion state.

[0022] In the above scheme, the method further comprises:

[0023] The fragment power parameter of the target warhead under the target explosion state is output, so as to obtain a fragment velocity curve and a kinetic energy distribution trajectory curve of the target warhead under the target explosion state.

[0024] In the above scheme, before the determination of the plurality of first explosion information of the warheads of different types under different explosion states, the method further comprises:

[0025] The warheads are classified according to initiation mode information and charge structure information of the warheads, so as to obtain type information of the warheads, wherein each type information corresponds to a plurality of different explosion states.

[0026] According to another aspect of the present application, a performance analysis device for fragments of a warhead is provided, and the device comprises:

[0027] A determination unit is configured to determine a plurality of first explosion information of warheads of different types under different explosion states, each type of warhead corresponding to a plurality of different explosion states, and to determine an influence factor of the warheads of different types on fragments under different explosion states based on the plurality of first explosion information.

[0028] A correction unit is configured to correct preset first fragment mass distribution information, first fragment initial velocity distribution information, first fragment scattering direction information and first fragment velocity attenuation information based on the influence factor, so as to obtain second fragment mass distribution information, second fragment initial velocity distribution information, second fragment scattering direction information and second fragment velocity attenuation information.

[0029] A generation unit is configured to generate a fragment power performance distribution model of a warhead based on the second fragment mass distribution information, the second fragment initial velocity distribution information, the second fragment scattering direction information and the second fragment velocity attenuation information, and the fragment power performance distribution model is used to determine a fragment power parameter of a target warhead under a target explosion state.

[0030] In the above scheme, the determination unit is further configured to determine type information and explosion state information of a target warhead, to determine second explosion information of the target warhead under a corresponding explosion state based on the type information and the explosion state information, and to take the second explosion information as input information of the fragment power performance distribution model, so as to obtain a fragment power parameter of the target warhead under the corresponding explosion state.

[0031] The device further comprises:

[0032] An output unit configured to output the fragment power parameter of the target warhead in the target detonation state, so as to obtain a fragment velocity curve and a kinetic energy distribution trajectory curve of the target warhead in the target detonation state.

[0033] The warhead fragment performance analysis method provided in the application determines the influencing factors of different types of warheads on fragments in different detonation states through the blasting information of different types of warheads in different detonation states, corrects preset first fragment mass distribution information, first fragment initial velocity distribution information, first fragment scattering direction information and first fragment velocity attenuation information based on the influencing factors, so as to obtain second fragment mass distribution information, second fragment initial velocity distribution information, second fragment scattering direction information and second fragment velocity attenuation information, and generates a fragment power performance distribution model of a warhead based on the second fragment mass distribution information, the second fragment initial velocity distribution information, the second fragment scattering direction information and the second fragment velocity attenuation information. The fragment power performance distribution model can be used to determine the fragment power parameters of different types of warheads in different detonation states. In this way, the uniformity analysis of the fragment power performance of different types of warheads in different detonation states can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a flow implementation schematic diagram of the warhead fragment performance analysis method in the application;

[0035] Figure 2 It is a classification schematic diagram of cylindrical charge structure warheads in different types and states in the application;

[0036] Figure 3 It is a fragment space scattering schematic diagram of type 1-4 warheads in the application;

[0037] Figure 4 It is a power performance field schematic diagram of type 1-4 warhead fragments against personnel targets in the application;

[0038] Figure 5 It is a structure composition schematic diagram of the warhead fragment performance analysis device in the application Figure 1 ;

[0039] Figure 6 It is a structure composition schematic diagram of the warhead fragment performance analysis device in the application Figure 2 . DETAILED DESCRIPTION

[0040] The technical solutions of the application are further described in detail below in combination with the drawings and specific embodiments of the specification.

[0041] In the specific embodiments described in various embodiments, various technical features can be combined in various combinations, for example, different combinations of different technical features can form different embodiments, in order to avoid unnecessary repetition, various possible combinations of various technical features in this application are not described again.

[0042] In the embodiments described in this application, it should be noted that unless otherwise stated and limited, the term "connection" should be understood broadly, for example, it can be an electrical connection, or a connection between two elements, it can be directly connected, or indirectly connected through an intermediate medium, for example, those skilled in the art can understand the specific meaning of the above-mentioned term according to the specific situation.

[0043] It should be noted that the terms "first, second, third" in the embodiments of the present application are only to distinguish similar objects, and do not represent the specific order of the objects. It can be understood that "first, second, third" can be interchanged in specific order or sequence as allowed. It should be understood that the objects distinguished by "first, second, third" can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0044] Figure 1 The flow implementation diagram of the performance analysis method of the warhead fragment in this application can be applied to electronic devices with computing functions, for example, the electronic device can be a computer, a computer, an information processing device, a tablet computer and the like, as shown in Figure 1 The method comprises:

[0045] Step 101, determining a plurality of first blasting information of different types of warheads under different detonation states, each type of warhead corresponding to a plurality of different detonation states;

[0046] Here, the electronic device can classify the warhead according to the initiation mode information and the charge structure information of the warhead to obtain the type information of the warhead, wherein each type information corresponds to a plurality of different detonation states.

[0047] For example, the warhead can be a cylindrical ammunition structure, which can be divided into 11 types, a total of 37 detonation states, and each type of warhead can be matched with a warhead in a real environment. As Figure 2As shown, the warhead comprises a shell 201, a charge structure 202 and a non-charge structure 203, wherein the end of the charge structure 202 and the non-charge structure 203 can have an end cover 204 or not; the initiation mode of the warhead includes but is not limited to point initiation and line initiation, when the initiation mode of the warhead is point initiation, the initiation point 205 can be located at the end of the charge structure 202, at the end of the non-charge structure 203, or at any position of the charge structure 203.

[0048] For example, the type 1 warhead is a cylindrical explosive structure with point initiation, the initiation point is located at one end of the explosive structure and close to the center, which is divided into 1-1 both ends without end cap, 1-2 initiation end with end cap, 1-3 non initiation end with end cap, 1-4 both ends with end cap (the thickness of the end cap can be different); the type 2 warhead is a cylindrical explosive structure with point initiation, the initiation point is located at the center of the explosive structure, which is divided into 2-1 both ends without end cap, 2-2 one end with end cap, 2-3 both ends with end cap; the type 3 warhead is a cylindrical explosive structure with point initiation, the initiation point is located at one end of the explosive structure and deviates from the center, which is divided into 3-1 both ends without end cap, 3-2 initiation end with end cap, 3-3 non initiation end with end cap, 3-4 both ends with end cap (the thickness can be different); the type 4 warhead is a ring cylindrical explosive structure with point initiation, the middle of the explosive structure is a non explosive structure (such as detonation line tube), the initiation point is located at one end of the non explosive structure and close to the center, which is divided into 4-1 both ends without end cap, 4-2 initiation end with end cap, 4-3 non initiation end with end cap, 4-4 both ends with end cap (the thickness can be different); the type 5 warhead is a non equal diameter cylindrical explosive structure with point initiation, that is, the diameter of the cylindrical explosive structure is smaller than the inner diameter of the cylindrical shell, the ring area between the explosive structure and the shell is filled with non explosive material, the initiation point is located at one end of the explosive structure and close to the center, which is divided into 5-1 both ends without end cap, 5-2 initiation end with end cap, 5-3 non initiation end with end cap, 5-4 both ends with end cap (the thickness can be different); the type 6 warhead is similar to the type 1, the same part is not described again, the difference is that the type 6 initiation point adopts two end initiation, which is divided into 6-1 both ends without end cap, 6-2 one end with end cap, 6-3 both ends with end cap (the thickness can be different); the type 7 warhead is similar to the type 4, which is a ring cylindrical explosive structure, the same part is not described again, the difference is that the type 7 initiation point adopts two end initiation, which is divided into 7-1 both ends without end cap, 7-2 one end with end cap, 7-3 both ends with end cap (the thickness can be different); the type 8 warhead is similar to the type 5, which is a non equal diameter cylindrical explosive structure, the same part is not described again, the difference is that the type 8 initiation point adopts two end initiation, which is divided into 8-1 both ends without end cap, 8-2 one end with end cap, 8-3 both ends with end cap (the thickness can be different); the type 9 warhead is a cylindrical explosive structure with middle linear initiation, which is divided into 9-1 both ends without end cap, 9-2 one end with end cap, 9-3 both ends with end cap (the thickness can be different).Type 10 warhead is similar to type 4 and type 7, which is a ring-shaped cylindrical charge structure of line initiation mode, and the same parts are not repeated, and the different parts are that type 10 adopts a cylindrical initiation mode, which simultaneously initiates the charge structure in the axial direction of the charge structure, and is divided into: 10-1 without end cap at both ends, 10-2 with end cap at one end, and 10-3 with end cap at both ends (the thickness can be different). Type 11 warhead is similar to type 5 and type 8, which is a non-equal diameter cylindrical charge structure, and the same parts are not repeated, and the different parts are that type 11 adopts a middle linear initiation mode, which is divided into: 11-1 without end cap at both ends, 11-2 with end cap at one end, and 11-3 with end cap at both ends (the thickness can be different).

[0049] It should be noted that the end cap 204 of the warhead and the material of the cylindrical shell 201 can be the same or different, and when the initiation point is eccentric initiation, the eccentricity can be adjusted and selected according to actual needs. Here, the eccentricity refers to the degree of deviation of the initiation point from the center of the charge structure. The present application classifies the warhead of the cylindrical charge structure according to the initiation mode, the charge structure, the presence or absence of the end cap at both ends, and the thickness difference, and distinguishes the fragment power of the cylindrical charge structure warhead of different types and states, which has a wide range of applications.

[0050] In the present application, the electronic device can determine the initiation point position information, the eccentric angle information of the fragment deviating from the center of the charge structure on the warhead, the eccentricity information of the initiation point deviating from the center of the charge structure on the warhead, the non-charge structure information on the warhead, and the end cap information of the initiation end and the non-initiation end on the warhead of different types of warheads in different detonation states.

[0051] Among them, the initiation point position information can be represented by x, and when the warhead adopts point initiation mode, x can be the axial position of the fragment from the initiation point.

[0052] The eccentric angle information of the fragment deviating from the center of the charge structure on the warhead can be represented by θ, and θ is the eccentric angle, which refers to the angle between the line connecting the initiation point and the center of the charge structure and the fragment at a certain position on the cylindrical periphery when the warhead adopts eccentric initiation, representing the circumferential position of the fragment.

[0053] The eccentricity information of the initiation point deviating from the center of the charge structure on the warhead can be represented by α, and α is the eccentricity, which is the ratio of the distance between the initiation point and the center line of the charge structure to the radius of the charge structure, wherein, .

[0054] The non-charge structure information on the warhead can be represented by γ, and γ is the hollow rate, which is the radius or thickness of the non-charge structure in the ring-shaped cylindrical warhead. Among them, . Rh is the non-charge structure radius or thickness, Rc is the inner radius of the shell, h means thickness, and c means the shell.

[0055] The cap information of the initiation end and the non-initiation end of the warhead can be expressed by k1 and k2, where k1 is the ratio of the product of the thickness and density of the initiation end cap to the product of the thickness and density of the shell, and k2 is the ratio of the product of the thickness and density of the non-initiation end cap to the product of the thickness and density of the shell. As the formula: , ); wherein, and are the thicknesses of the initiation end cap and the non-initiation end cap, and are the densities of the initiation end cap and the non-initiation end cap, is the density of the cylindrical shell.

[0056] Step 102, determining the influencing factors of the different types of warheads on the fragments in different detonation states based on the plurality of first explosion information;

[0057] Here, after obtaining the plurality of first explosion information of the different types of warheads in different detonation states, the electronic device can fit the plurality of first explosion information to obtain the influencing factors of the different types of warheads on the fragments in different detonation states. As shown in the following formula:

[0058]

[0059] wherein, is the plurality of first explosion information of the different types of warheads in different detonation states, and the first explosion information includes the axial position, the circumferential position, the eccentricity, the eccentric angle, the hollow rate, the presence or absence of the end cap, the thickness of the end cap, and the thickness of the shell of the fragments; is the correction function corresponding to the influencing factors of the different types of warheads on the fragments in different detonation states obtained by fitting the plurality of first explosion information. The specific value of the formula can be obtained by simulation, e is the natural number 2.71828 (exponential function fitting), d is the charge diameter. 14 is Figure 2 the charge structure of type 1-4 in the middle, and v is the velocity.

[0060] Step 103, correcting the preset first fragment mass distribution information, first fragment initial velocity distribution information, first fragment scattering direction information, and first fragment velocity attenuation information based on the influencing factors to obtain second fragment mass distribution information, second fragment initial velocity distribution information, second fragment scattering direction information, and second fragment velocity attenuation information.

[0061] Here, the electronic device can introduce the correction parameters corresponding to the influencing factors of different types of warheads under different detonation states on the fragments into the first function corresponding to the first fragment mass distribution information, the first fragment initial velocity distribution information, the first fragment scattering direction information and the first fragment velocity attenuation information respectively, to obtain the second function corresponding to the second fragment mass distribution information, the second fragment initial velocity distribution information, the second fragment scattering direction information and the second fragment velocity attenuation information respectively.

[0062] Here, the first fragment mass distribution information can be obtained in the fragmentation test and simulation analysis of different types of warheads, and the correction parameter is introduced into the first function corresponding to the first fragment mass distribution information, and the second function corresponding to the obtained second fragment mass distribution information is:

[0063] Formula 1: ;

[0064] Formula 2: ;

[0065] Wherein, and represents the number and average mass of fragments obtained by the i-th type of warhead under j-th detonation state, is a correction function of the influence of different types of cylindrical charge structure warheads under different detonation conditions on the mass (number) of fragments, wherein x is the axial position of the fragment from the initiation point, is the eccentricity, which is the ratio of the distance between the initiation point and the center of the charge structure to the radius of the charge structure, wherein , is the hollow rate, which is the radius or thickness of the non-charged structure (for the non-charged structure in the ring-shaped cylindrical charge), ; and are the ratio of the product of the thickness and density of the initiation end and non-initiation end cover to the product of the thickness and density of the shell, wherein , ); and are the thickness of the initiation end and non-initiation end cover, and are the density of the initiation end and non-initiation end cover, is the density of the cylindrical shell, when the materials of the two are the same, the ratio of their velocities is only a function of the thickness of the end cover and the shell. Wherein A is a constant, usually taking the value 0.51, d is the diameter of the charge structure, is the shell wall thickness of the warhead, is the projectile mass when the projectile fills the warhead, is the shell mass. mf is the average mass, e is the natural number 2.71828 (exponential function fitting); is the fragment distribution density function, the specific expression of each parameter is obtained by experiment, Nij is the number of fragments in i-j charge state, mij corresponds to the average mass obtained by experiment, uij is obtained in the reference book.

[0066] For example, may be: (Obtained by warhead fragmentation test).

[0067] Here, the first fragment initial velocity distribution information can be obtained according to different types of warheads in X-ray test and simulation analysis results, and the first function corresponding to the first fragment initial velocity distribution information is introduced into the correction parameter, and the second function corresponding to the second fragment initial velocity distribution information is obtained:

[0068]

[0069] Among them, is the eccentric angle, is the angle between the fragment at a certain position on the cylindrical circumference and the connecting line between the initiation point and the center of the charge structure, which represents the circumferential position of the fragment, is the correction function of the warhead of different types of cylindrical charge structure under different initiation state conditions on the speed of the fragment, which contains axial position, circumferential position, eccentricity, hollow rate, presence or absence of end cap and end cap thickness, shell thickness, is the drag speed of the charge structure, is the mass ratio between the charge structure and the shell.

[0070] Here, the first fragment scattering direction information can be obtained according to different types of cylindrical charge structure of warhead in the fragmentation test and simulation analysis, and the first function corresponding to the first fragment scattering direction information is introduced into the correction parameter, and the second function corresponding to the second fragment scattering direction information is obtained:

[0071]

[0072] Here, the first fragment velocity attenuation information can be obtained according to the initial velocity distribution function of the fragment of the warhead of different types of cylindrical charge structure, and the first function corresponding to the first fragment velocity attenuation information is introduced into the correction parameter, and the second function corresponding to the second fragment velocity attenuation information is obtained:

[0073]

[0074] Among them, is the drag coefficient of the fragment, and is the natural fragment is the preformed fragment Ground air density ( =1.25kg / m 3 ); The frontal area (m²) of fragments of different types of warheads under different detonation states. 2 Typical fragments of different types of warheads under different detonation states can be taken and their windward area can be obtained by using the three-view projection method. R is the flight distance (m) of the fragment from the explosion point. This represents the average fragment mass obtained by the i-th type of warhead under the j-th detonation state, and e means exponential function.

[0075] for example,

[0076] Step 104: Based on the mass distribution information of the second fragment, the initial velocity distribution information of the second fragment, the dispersion direction information of the second fragment, and the velocity decay information of the second fragment, a fragment yield performance distribution model of the warhead is generated; the fragment yield performance distribution model is used to determine the fragment yield parameters of the target warhead under the target detonation state.

[0077] Here, the electronic device, based on the second functions corresponding to the second fragment mass distribution information, the second fragment initial velocity distribution information, the second fragment dispersion direction information, and the second fragment velocity decay information, establishes a Cartesian coordinate system with the detonation point of the warhead as the origin, and generates a fragment power performance distribution model representing the fragment velocity and kinetic energy distribution trajectory of the warhead.

[0078] Here, fragmentation power performance mainly refers to the kinetic energy and specific kinetic energy of the fragments. After obtaining the fragment mass, quantity, dispersion direction, and velocity distribution according to formulas 1 to 5, the electronic equipment randomly generates fragments with different masses, velocities, and directions on the surface of the warhead using the Monte Carlo method. With the initial state determined, the velocity, kinetic energy, and specific kinetic energy distribution of each fragment at different spatial positions with the distance traveled are obtained through the fragment velocity decay formula, which is the fragmentation power performance distribution model.

[0079] Here, the expression for calculating the spatial position of the fragment velocity during spatial decay is as follows: For example, assuming the warhead detonates eccentrically, the detonation point is located on the y-axis; for non-eccentric detonation, there is no requirement for the detonation point on the y-axis, and the z-axis is determined according to the right-hand rule. Therefore, the fragment velocity... , Here, Y and z are coordinate axes, and the space is distributed in a rectangular coordinate system of xyz.

[0080] In the present application, the electronic device can determine the type information and the detonation state information of the target warhead under the condition of obtaining the fragment power performance distribution model; determine the second explosion information of the target warhead under the corresponding detonation state based on the type information and the detonation state information; and then take the second explosion information as the input information of the fragment power performance distribution model to obtain the fragment power parameters of the target warhead under the corresponding detonation state.

[0081] Here, the electronic device can also output the fragment power parameters of the target warhead under the target detonation state to obtain the fragment velocity curve and the kinetic energy distribution trajectory curve of the target warhead under the target detonation state under the condition of obtaining the fragment power parameters of the target warhead under the corresponding detonation state.

[0082] Examples of obtaining fragment power parameters using the fragment power performance distribution model include: fragment power performance analysis of a 1-4 type cylindrical charge structure warhead, which adopts a one-end center initiation mode and has end caps with different thicknesses at both ends of the charge structure, and the end cap material is consistent with the cylindrical shell material, wherein the eccentricity is 0, and in the case where the end cap and the cylindrical shell material are consistent (such as metal materials), and only the thickness of the end cap and the shell (h , ). and are the thicknesses of the initiation end and the non-initiation end end caps, respectively, is the shell thickness of the warhead. By inputting the explosion information ( , and ) as input parameters into the fragment power performance distribution model, the fragment power parameters are obtained, wherein the fragment power parameters are kinetic energy and specific kinetic energy, which are obtained by basic parameters, fragment velocity, mass, and fragment windward area; a fragment space scattering schematic diagram of a 1-4 cylindrical charge structure warhead is shown in Figure 3 ; and a power performance field schematic diagram of a 1-4 type cylindrical charge structure warhead fragment against a personnel target is shown in Figure 4 . Figure 4 Among them, for a personnel target, the personnel target is equivalent to 1.8m x 0.5m, the personnel lethal kinetic energy criterion is 78J, and the 1-4 type warhead fragment power field is output. In this way, the evaluation result can be visualized, and the real warhead fragment power situation can be better reflected. In addition, the standard is consistent, the value is fixed, and it can be adapted to the comparison of fragment power performance of different cylindrical charge structure warheads.

[0083] The warhead fragment performance analysis method provided in this application analyzes the blast information of different types of warheads under different detonation states to determine the impact of different types of warheads on fragments under different detonation states. It then modifies the preset function for fragments and generates a fragment yield performance distribution model based on the modified fragment yield function. This method not only allows for simultaneous fragment performance analysis of warheads of different types and detonation states but also meets the requirements of multi-index analysis, improving the accuracy of warhead fragment yield analysis. Furthermore, the two basic requirements of the composite lethality test index in this application reflect the characteristics of fragment distribution and comprehensive multi-index assessment.

[0084] Figure 5 This is a schematic diagram of the structural composition of the performance analysis device for warhead fragments in this application. Figure 1 ,like Figure 5 As shown, the device includes:

[0085] The determining unit 501 is used to determine multiple first explosion information of different types of warheads under different detonation states, with each type of warhead corresponding to multiple different detonation states; and to determine the influencing factors of the different types of warheads on fragments under different detonation states based on the multiple first explosion information.

[0086] The correction unit 502 is used to correct the preset first fragment mass distribution information, first fragment initial velocity distribution information, first fragment scattering direction information and first fragment velocity decay information based on the influencing factors, so as to obtain the second fragment mass distribution information, second fragment initial velocity distribution information, second fragment scattering direction information and second fragment velocity decay information.

[0087] The generation unit 503 is used to generate a fragmentation power performance distribution model of the warhead based on the second fragment mass distribution information, the second fragment initial velocity distribution information, the second fragment dispersion direction information, and the second fragment velocity decay information; the fragmentation power performance distribution model is used to determine the fragmentation power parameters of the target warhead under the target detonation state.

[0088] In a preferred embodiment, the device further includes: an output unit 504;

[0089] The determining unit 501 is further configured to determine the type information and detonation state information of the target warhead; determine the second blasting information of the target warhead in the corresponding detonation state based on the type information and the detonation state information; and use the second blasting information as input information of the fragmentation power performance distribution model to obtain the fragmentation power parameters of the target warhead in the corresponding detonation state.

[0090] The output unit 504 is configured to output the fragment power parameter of the target warhead in the target detonation state, so as to obtain the fragment velocity curve and the kinetic energy distribution trajectory curve of the target warhead in the target detonation state.

[0091] It should be noted that the performance analysis device of the warhead fragment provided in the above embodiment is only used for analyzing the fragment power by dividing the above program modules, and in actual application, the above processing can be completed by different program modules according to the needs, that is, the internal structure of the device is divided into different program modules to complete all or part of the above processing. In addition, the device provided in the above embodiment and the method embodiment provided above belong to the same concept, and the specific implementation process is described in the method embodiment, which will not be repeated here.

[0092] Figure 6 is a structural composition diagram of the performance analysis device of the warhead fragment in the application Figure 2 The device 600 can be a mobile phone, a computer, an information transceiver device, a tablet device, a personal digital assistant, or the like, which has a data processing function. Figure 6 The device 600 shown in the figure includes at least one processor 601, a memory 602, at least one network interface 604, and a user interface 603. The various components in the device 600 are coupled together through a bus system 605. It can be understood that the bus system 605 is used to realize the connection and communication between the components. The bus system 605 includes a data bus, a power supply bus, a control bus, and a state signal bus. However, for the purpose of clear illustration, all kinds of buses are marked as the bus system 605 in the figure. Figure 6

[0093] The user interface 603 can include a display, a keyboard, a mouse, a trackball, a click wheel, a key, a button, a touchpad, or a touch screen, etc.

[0094] ​It is to be understood that the memory 602 can be a volatile memory or a nonvolatile memory, and can also include both volatile and nonvolatile memory. Among them, the nonvolatile memory can be a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a ferromagnetic random access memory (FRAM), a Flash Memory, a magnetic surface memory, an optical disc, or a Compact Disc Read-Only Memory (CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a Random Access Memory (RAM) used as an external cache. By way of example and not limitation, many forms of RAM can be used, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), SyncLink Dynamic Random Access Memory (SLDRAM), Direct Rambus Random Access Memory (DRRAM).The memory 602 described in the embodiments of the present application is intended to include, but is not limited to, these and any other suitable type of memory.

[0095] The memory 602 in the embodiments of the present application is used to store various types of data to support the operation of the device 600. Examples of these data include: any computer programs for operating on the device 600, such as an operating system 6021 and an application program 6022; contact data; phonebook data; messages; pictures; audio; and the like. The operating system 6021 contains various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application program 6022 can contain various application programs, such as a media player (Media Player), a browser (Browser), and the like, for implementing various application services. The program implementing the method of the embodiments of the present application can be contained in the application program 6022.

[0096] The method disclosed in the embodiments of the present application can be applied to the processor 601 or implemented by the processor 601. The processor 601 can be an integrated circuit chip having a processing capability. In the implementation process, each step of the above method can be completed by the integrated logic circuit or the instruction in the form of software of the hardware in the processor 601. The processor 601 described above can be a general-purpose processor, a digital signal processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, and the like. The processor 601 can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor can be a microprocessor or any conventional processor, and the like. In combination with the steps of the method disclosed in the embodiments of the present application, the hardware decoding processor can be directly embodied to execute the above method, or the hardware and software modules in the decoding processor can be combined to execute the above method. The software module can be located in the storage medium, and the storage medium is located in the memory 602. The processor 601 reads the information in the memory 602 and combines the hardware to complete the steps of the above method.

[0097] In exemplary embodiments, the apparatus 600 can be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), Field-Programmable Gate Arrays (FPGAs), general-purpose processors, controllers, microcontrollers (MCUs), microprocessors (Microprocessors), or other electronic elements for executing the aforementioned methods.

[0098] In exemplary embodiments, the embodiments of the present application further provide a computer readable storage medium, for example, the memory 602 including a computer program, which can be executed by the processor 601 of the apparatus 600 to complete the steps of the aforementioned methods. The computer readable storage medium can be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM, etc.; or can be various devices including one or any combination of the above memories, such as mobile phones, computers, tablet devices, personal digital assistants, etc.

[0099] A computer readable storage medium having a computer program stored thereon, which, when executed by a processor, performs any of the steps of the above method.

[0100] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the various components shown or discussed can be through some interfaces, indirect coupling or communication connection between devices or units, which can be electrical, mechanical or other forms.

[0101] The units described above as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place or distributed on multiple network units; some or all of the units can be selected according to actual needs to achieve the purpose of the embodiments.

[0102] The methods disclosed in the several method embodiments provided by the present application can be combined arbitrarily without conflict to obtain new method embodiments.

[0103] The features disclosed in the several product embodiments provided by the present application can be combined arbitrarily without conflict to obtain new product embodiments.

[0104] The features disclosed in the several method or device embodiments provided by the present application can be combined arbitrarily without conflict to obtain new method embodiments or device embodiments.

[0105] The above description is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for analyzing the performance of warhead fragments, characterized in that, The method includes: Determine multiple first-explosion information for different types of warheads under different detonation states, with each type of warhead corresponding to multiple different detonation states; Based on the multiple first explosion information, determine the influencing factors of the different types of warheads on fragments under different detonation states; Based on the aforementioned influencing factors, the preset first fragment mass distribution information, first fragment initial velocity distribution information, first fragment scattering direction information, and first fragment velocity decay information are corrected to obtain the second fragment mass distribution information, second fragment initial velocity distribution information, second fragment scattering direction information, and second fragment velocity decay information. Based on the mass distribution information of the second fragment, the initial velocity distribution information of the second fragment, the dispersion direction information of the second fragment, and the velocity decay information of the second fragment, a fragment yield performance distribution model of the warhead is generated; the fragment yield performance distribution model is used to determine the fragment yield parameters of the target warhead under target detonation conditions. The multiple first explosion information of the different types of warheads under different detonation states includes a combination of the following information: Information on the detonation point location of different types of warheads under different detonation states, information on the eccentricity angle of fragments deviating from the center of the warhead's upper charge structure, information on the eccentricity rate of the detonation point deviating from the center of the warhead's upper charge structure, information on the non-charge structure of the warhead, and information on the end caps of the detonating and non-detonating ends of the warhead. The factors determining the influence of different types of warheads on fragmentation under different detonation states based on the multiple first explosion information include: By fitting the multiple first explosion information, the influencing factors of different types of warheads on fragmentation under different detonation states can be obtained. The eccentricity information of the detonation point from the center of the warhead's upper charge structure is the ratio of the distance between the detonation point and the centerline of the charge structure to the radius of the charge structure. The end cap information of the detonating end of the warhead is the ratio of the product of the end cap thickness and density to the product of the shell thickness and density. The end cap information of the non-detonating end of the warhead is the ratio of the product of the end cap thickness and density to the product of the shell thickness and density. The non-explosive structure information on the warhead is γ=R. h / R c , where R h It is the radius or thickness of the non-charge structure, R c It is the inner radius of the shell.

2. The method according to claim 1, characterized in that, The process of correcting the preset first fragment mass distribution information, first fragment initial velocity distribution information, first fragment dispersion direction information, and first fragment velocity decay information based on the aforementioned influencing factors to obtain second fragment mass distribution information, second fragment initial velocity distribution information, second fragment dispersion direction information, and second fragment velocity decay information includes: By introducing correction parameters corresponding to the influencing factors into the first functions corresponding to the first fragment mass distribution information, the first fragment initial velocity distribution information, the first fragment scattering direction information, and the first fragment velocity decay information, respectively, the second functions corresponding to the second fragment mass distribution information, the second fragment initial velocity distribution information, the second fragment scattering direction information, and the second fragment velocity decay information are obtained.

3. The method according to claim 2, characterized in that, The generation of the fragment yield performance distribution model of the warhead based on the second fragment mass distribution information, the second fragment initial velocity distribution information, the second fragment dispersion direction information, and the second fragment velocity attenuation information includes: Based on the second functions corresponding to the second fragment mass distribution information, the second fragment initial velocity distribution information, the second fragment dispersion direction information, and the second fragment velocity decay information, a rectangular coordinate system is established with the detonation point of the warhead as the origin, and a fragment power performance distribution model representing the fragment velocity and kinetic energy distribution trajectory of the warhead is generated.

4. The method according to claim 1, characterized in that, The method further includes: Determine the type and detonation status of the target warhead; Based on the type information and the detonation status information, the second explosive information of the target warhead under the corresponding detonation status is determined; Using the second blasting information as input information to the fragmentation power performance distribution model, the fragmentation power parameters of the target warhead under the corresponding detonation state are obtained.

5. The method according to claim 4, characterized in that, The method further includes: Output the fragmentation power parameters of the target warhead under the target detonation state to obtain the fragmentation velocity curve and kinetic energy distribution trajectory curve of the target warhead under the target detonation state.

6. The method according to claim 1, characterized in that, Before determining multiple first-explosion information for different types of warheads under different detonation states, the method further includes: The warheads are classified according to their detonation method and charge structure information to obtain their type information, where each type information corresponds to multiple different detonation states.

7. A performance analysis device for warhead fragments, characterized in that, The device includes: The determining unit is used to determine multiple first explosion information of different types of warheads under different detonation states, with each type of warhead corresponding to multiple different detonation states; and to determine the influencing factors of the different types of warheads on fragments under different detonation states based on the multiple first explosion information. The correction unit is used to correct the preset first fragment mass distribution information, first fragment initial velocity distribution information, first fragment scattering direction information and first fragment velocity decay information based on the influencing factors, so as to obtain second fragment mass distribution information, second fragment initial velocity distribution information, second fragment scattering direction information and second fragment velocity decay information. The generation unit is used to generate a fragmentation yield performance distribution model of the warhead based on the mass distribution information of the second fragment, the initial velocity distribution information of the second fragment, the dispersion direction information of the second fragment, and the velocity decay information of the second fragment; the fragmentation yield performance distribution model is used to determine the fragmentation yield parameters of the target warhead under target detonation conditions. The multiple first explosion information of the different types of warheads under different detonation states includes a combination of the following information: Information on the detonation point location of different types of warheads under different detonation states, information on the eccentricity angle of fragments deviating from the center of the warhead's upper charge structure, information on the eccentricity rate of the detonation point deviating from the center of the warhead's upper charge structure, information on the non-charge structure of the warhead, and information on the end caps of the detonating and non-detonating ends of the warhead. The factors determining the influence of different types of warheads on fragmentation under different detonation states based on the multiple first explosion information include: By fitting the multiple first explosion information, the influencing factors of different types of warheads on fragmentation under different detonation states can be obtained. The eccentricity information of the detonation point from the center of the warhead's upper charge structure is the ratio of the distance between the detonation point and the centerline of the charge structure to the radius of the charge structure. The end cap information of the detonating end of the warhead is the ratio of the product of the end cap thickness and density to the product of the shell thickness and density. The end cap information of the non-detonating end of the warhead is the ratio of the product of the end cap thickness and density to the product of the shell thickness and density. The non-explosive structure information on the warhead is γ=R. h / R c , where R h It is the radius or thickness of the non-charge structure, R c It is the inner radius of the shell.

8. The apparatus according to claim 7, characterized in that, The determining unit is further configured to determine the type information and detonation status information of the target warhead; and to determine the second blasting information of the target warhead in the corresponding detonation status based on the type information and the detonation status information. And to use the second blasting information as input information for the fragmentation power performance distribution model to obtain the fragmentation power parameters of the target warhead in the corresponding detonation state; The device further includes: The output unit is used to output the fragmentation power parameters of the target warhead under the target detonation state, so as to obtain the fragmentation velocity curve and kinetic energy distribution trajectory curve of the target warhead under the target detonation state.

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