A typical target vulnerability damage assessment method and system

Abstract

The present invention discloses a typical target vulnerability damage assessment method and system, including the steps of: determining a map environment model, a warhead model, a target vulnerability model and a projectile-target intersection condition; generating a target damage tree of the target vulnerability model; establishing a conversion matrix to obtain the relative position relationship before and after the projectile-target intersection; determining the aiming point coordinates based on the Monte Carlo method and circular probability deviation to generate random drop points, calculating the end point effect of the superposition of the projectile-target kinematic parameters and the static power field of the warhead damage element, and determining the damage effect field distribution and the loading state of the components by the ray detection method; performing physical damage analysis of the target components according to the damage criterion and the damage element type to determine the damage probability of the components; and determining the overall damage rate of the target according to the damage tree minimum cut set theory. The present invention can carry out comparative evaluation of the damage level, damage probability, ammunition consumption and strike scheme of different targets with different weapon types and different dosages.

Description

Technical Field

[0001] The present invention relates to the field of target damage effect assessment, and in particular to a typical target vulnerability damage assessment method and system. Background Art

[0002] With the development of computer technology and simulation theory, advanced simulation technologies with military application backgrounds such as explosion, penetration, and impact are becoming increasingly mature and stable. At the same time, driven by the growing demand for actual combat, damage assessment technology based on precise modeling and simulation technology has gradually become the mainstream trend. From the development of World War II to the present, damage assessment technology has entered a stage dominated by quantitative analysis from qualitative analysis. The research on simulation evaluation methods of target damage effects has developed from simple terminal effect power parameter evaluation to simulation simulation of actual combat damage power, and the evaluation targets have also developed from simple simplified targets to complex three-dimensional targets, reducing the interference of damage assessment results caused by human factors. Its intelligence level has been significantly improved and applied in many aspects of military systems. In terms of weapon system development, damage effectiveness analysis and evaluation technology runs through its entire life cycle. In terms of simulation training, the damage assessment system provides trainees with the real effectiveness of offensive and defensive weapons of both sides, greatly improving the level of actual combat training and individual strength, and reducing casualties in real battlefields. China started late in the development of damage assessment technology. Although computer modeling and simulation technology has been used in the damage assessment of various warheads and targets, these simulations are too single, scattered and idealized, and have not formed a complete and mature system, which is far from the actual assessment needs. The research on the target damage effect assessment system involves multiple fields including weapon damage science, ballistics, and extension simulation modeling. The knowledge related to damage effect assessment in various fields is abstracted and summarized, and finally applied to the system for implementation. There is still a lot of work to be done, especially for the complex and changeable environment of real-life joint training, where there are many types of participating weapons. Summary of the invention

[0003] The purpose of the present invention is to provide a typical target vulnerability damage assessment method and system, to solve the evaluation and effectiveness analysis of the damage level, damage probability, ammunition consumption and strike plan of different targets with different weapon types and different dosages, and to provide a simulation platform and technical support for target protection design, weapon and ammunition development, and simulation training.

[0004] The technical solution for achieving the purpose of the present invention is:

[0005] A typical target vulnerability damage assessment method includes the following steps:

[0006] Determine the map environment model, warhead model, target vulnerability model and projectile-target intersection conditions;

[0007] Generate a target damage tree of the target vulnerability model based on the mapping relationship between the target's function and physical damage;

[0008] Establish the transformation matrix between the missile body coordinate system and the target coordinate system to obtain the relative position relationship before and after the missile and target intersect;

[0009] Based on the Monte Carlo method and circular probability deviation, the aiming point coordinates are determined to generate random drop points, the terminal effect of the superposition of the static power field of the warhead damage element and the damage effect field distribution and the load state of the components are determined by the radiographic detection method;

[0010] Conduct physical damage analysis on target components based on damage criteria and damage element types to determine the damage probability of the components;

[0011] The overall damage rate of the target is determined based on the damage tree minimum cut set theory to obtain the damage effectiveness evaluation conclusion.

[0012] A typical target vulnerability damage assessment system includes a model database module, a scenario design module and a visual simulation demonstration module, wherein:

[0013] The model database module is used for storing, inputting and editing information data of the map environment model, the warhead model, the target vulnerability model and the missile-target intersection condition parameters, and generating a target damage tree of the target vulnerability model based on the mapping relationship between the function and physical damage of the target;

[0014] The scenario design module is used for the integrated management of target damage assessment, including the design of target damage assessment scenario, visual editing and scenario modification of the simulation process. The design of the target damage assessment scenario includes: establishing a conversion matrix between the missile body coordinate system and the target coordinate system to obtain the relative position relationship before and after the intersection of the missile and the target; conducting damage effectiveness analysis, determining the aiming point coordinates based on the Monte Carlo method and circular probability deviation to generate random drop points, calculating the terminal effect of the superposition of the missile-target kinematic parameters and the static power field of the warhead damage element, and determining the damage effect field distribution and the loading state of the components through the ray detection method; conducting physical damage analysis of the target components according to the damage criterion and the damage element type to determine the damage probability of the components; determining the overall damage rate of the target according to the damage tree minimum cut set theory to obtain the damage effectiveness evaluation conclusion;

[0015] The visual simulation demonstration module is used for operation control, dynamic intervention, recording of the target damage assessment simulation process, and display of the assessment results.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the types of warheads include shaped charge, fragmentation, penetration and detonation; typical targets include ground armor, light air armor and ground buildings; and interfaces are reserved for the expansion of other types of targets. Comparative evaluation of the damage level, damage probability, ammunition consumption and strike plan of different targets with different weapon types and different dosages can be carried out, thereby improving the accuracy of the evaluation and providing a platform and technical support for target protection design, weapon and ammunition development, and simulation training and emulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a diagram showing the composition of the damage assessment system of the present invention.

[0018] Figure 2 This is a flow chart of the damage assessment method of the present invention.

[0019] Figure 3 This is the M-level damage tree diagram in the embodiment.

[0020] Figure 4 It is the projectile-target intersection analysis diagram in the embodiment.

[0021] Figure 5 This is a demonstration scene diagram of the tank target vulnerability damage analysis process and evaluation in the embodiment.

[0022] Figure 6 It is a demonstration scene diagram of the aerial target (helicopter) vulnerability damage analysis process and evaluation in the embodiment.

[0023] Figure 7 It is a demonstration scene diagram of the vulnerability damage analysis process and evaluation of the ground building template in the embodiment. DETAILED DESCRIPTION

[0024] In order to facilitate those skilled in the art to understand and implement the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] like Figure 1 As shown, a typical target vulnerability damage assessment system includes a model database module, a scenario design module and a visual simulation demonstration module.

[0026] The model database module is used for storing, inputting and editing information data of map environment, warhead damage elements and target vulnerability model;

[0027] The scenario design module is used for the integrated management of typical target vulnerability damage assessment, including the design of typical target vulnerability damage assessment scenario, visual editing of the assessment model and scenario modification of the simulation process;

[0028] The visual simulation demonstration module is used for operation control, dynamic intervention, recording of the assessment process and display of the assessment results of a typical target vulnerability damage assessment simulation process.

[0029] Furthermore, the map environment model in the model database module mainly includes model information such as the intersection terrain of typical targets and weapons, the surrounding environment and weather conditions. The warhead model mainly includes the type, geometric characteristics, physical parameters and damage capability of its warhead / damage element. The warhead model data prefabricates the warhead types of four types of damage modes: shaped energy, penetration, fragmentation and detonation, and supports the input of custom warhead types and the modification of the power field performance of existing types of warheads. The parameters that can be edited for the power field performance of existing warheads include the penetration depth of shaped energy or penetration warheads, the mass distribution of fragments of fragment warheads, spatial dispersion characteristics, initial velocity and velocity attenuation law, etc., and the peak overpressure function of the shock wave of detonation warheads. The target vulnerability model library prefabricates tank models represented by ground armor, fighter and armed helicopter models represented by light air armor, and tunnel command post models represented by ground buildings. The target vulnerability model consists of structural protection compartments and functional critical compartments, that is, the vulnerability model contains the target type, geometric features, physical parameters, functional component characteristics and their relative relationships. In the target model visual editing, it supports calling or editing the system prefabricated target vulnerability model, and supports the import and editing of general geometric model format (*.stp / *.fbx) files, that is, picking up the target protection compartment according to the imported geometric model information, defining parameters such as protective armor thickness and material strength, and defining the position, size and equivalent strength of the critical compartment (such as fire control computer and other functional equipment components) by establishing basic geometric bodies (such as cuboids, cylinders, truncated cones and cones, etc.), and using database technology to complete the integration of target model data, establish target data tables, damage level data tables, damage tree data tables, equivalent three-dimensional functional model data tables, component material characteristics data tables and damage judgment data tables.

[0030] Furthermore, the scenario setting of the scenario design module includes the integrated management of damage assessment conditions, that is, determining the projectile type, target vulnerability model (including damage tree), scene (terrain, climate and other factors) and projectile-target intersection conditions (such as projectile-target trajectory, attack position, angle, etc.). The function of damage effectiveness analysis is to evaluate the damage of the target under the attack of a typical warhead based on the input of the scenario, and obtain the target's ammunition consumption at different damage levels, different weapon types, different quantities, and different attack parameters. The simulation scenario modification function is to edit and supplement the established evaluation conditions.

[0031] Furthermore, the simulation operation control function of the visual simulation demonstration module mainly controls the simulation process through operation control operations such as pause, continue, switch, end, speed change, etc. The dynamic intervention function is to be able to temporarily implement various intervention activities according to actual needs during the simulation operation, such as force increase and decrease, command issuance, position adjustment and real-time attack.

[0032] like Figure 2 As shown in the figure, the system implements the steps of a typical target vulnerability damage assessment:

[0033] Step 1: Select or edit the relevant parameters of the weapon warhead that needs to hit the target; import or edit the target model to be evaluated, establish the target vulnerability model and generate the target damage tree based on the mapping relationship between the function and physical damage of the target;

[0034] Step 2: Start the scenario design module to integrate and manage the damage analysis conditions of the target to be evaluated, including setting and determining the selected projectile type, target vulnerability model (including damage tree), scenario (terrain, climate and other factors) and projectile-target intersection conditions (such as projectile-target trajectory, attack position, angle, etc.);

[0035] Step 3: Calling the damage effectiveness analysis mainly includes calling the analysis scenario and model parameters of step 2, determining the aiming point coordinates based on the Monte Carlo method and circular probability deviation to generate random drop points, calculating the terminal effect of the superposition of the projectile-target kinematic parameters and the static power field of the warhead damage element, and using the ray detection method to give the damage effect field distribution and component load status;

[0036] Step 4: Carry out physical damage analysis of target components based on damage criteria and damage element types, then calculate the overall damage law of the target and draw conclusions on damage effectiveness evaluation;

[0037] Step 5: According to the damage tree minimum cut set theory, calculate the overall damage law of the target and draw a conclusion on the damage effectiveness evaluation;

[0038] Step 6: Virtually demonstrate the evaluation process and evaluation conclusions through the visualization module.

[0039] Example 1

[0040] The implementation process of damage assessment to ground armored targets based on shaped-charge warhead.

[0041] Step 1: Select a shaped-charge warhead in the model database and input the relevant parameters of the warhead’s destructive capability. See Table 1 for specific parameters.

[0042] Table 1 Warhead parameters

[0043]

[0044] Select the ground armored target tank model, enter the target visualization editing module, and edit and modify the tank target vulnerability model parameters; since the material composition of tank components is very complex, this system method is to make its actual structure and actual material strength and thickness equivalent to homogeneous steel plates. The equivalent formula is:

[0045]

[0046] Where δ' is the equivalent thickness of the target material, δ is the thickness of the raw material; σ m is the yield strength of the raw material, σ t is the yield strength of the equivalent material. The parameters of the protection compartment of the tank target vulnerability model are shown in Table 2;

[0047] Table 2 Tank target information table

[0048]

[0049]

[0050]

[0051] According to the characteristics, location, size and strength of the key compartment of the tank target vulnerability model, the vulnerability parameter information of its functional components is established using basic geometric bodies. The database technology is used to establish information data tables such as target outline, damage level, equivalent three-dimensional function, component material characteristics, and functional damage and physical damage mapping to complete the establishment of the target vulnerability model damage tree.

[0052] In this embodiment, the tank damage level is divided into three levels: M, F and K. The M level indicates that the target cannot complete the combat mission related to movement; the F level indicates that it cannot complete the offensive combat mission; and the K level indicates catastrophic damage to the target. The tank target vulnerability model information is shown in Tables 2 and 3. The M level damage tree is shown in Figure 3 .

[0053] Table 3 Tank target table

[0054]

[0055] Step 2: Start the scenario design module to confirm the revised shaped charge warhead model, tank target vulnerability model, desert terrain map, and “missile-target” intersection condition settings. Figure 4 As shown,

[0056] Suppose the missile body coordinate system O1-x1y1z1 and the tank target coordinate system O-xyz, where point C (x0, y0, z0) is the landing point of the projectile flight surface, point A is the projection point of the projectile on the target plane, that is, the landing point of the projectile invading the target. Suppose the projectile explodes near the tank body. At this time, the random trajectory of the projectile is parallel to z1, then the angle θ between z1 and z is the incident angle of the random trajectory of the projectile; at the same time, OB is the projection of the z1 axis on the xyz plane of the target coordinate system, and the angle γ between OB and the x axis is the azimuth of the random trajectory of the projectile; perform two rotations of the azimuth and the incident angle to rotate the projectile flight surface to the tank target plane, and rotate the flight plane around the z1 axis by an angle of γ. At this time, the following formula can be obtained:

[0057]

[0058] Among them, (x'1, y'1, z'1) is the transition coordinate between the two rotation transformations. Then, the rotated coordinate system is rotated around the axis by an angle of θ, then:

[0059]

[0060] That is, the transformation matrix N between the missile body coordinate system and the target coordinate system is obtained, thereby establishing the relative position relationship before and after the missile and target intersection.

[0061]

[0062] Step 3: Call the damage effectiveness analysis. The drop point distribution of conventional missiles obeys a two-dimensional normal distribution. In general, the vertical dispersion standard deviation σ x The horizontal dispersion standard deviation σ y The difference is not big. The accuracy of the impact point dispersion is usually expressed by the circular error probability CEP. If the coordinates of the missile's aiming point are (X0, Y0), the formula for calculating the random landing point of the missile during a single shot is:

[0063]

[0064]

[0065] Where CEP is the circular probability deviation of the missile impact point distribution, r1 and r2 are random numbers that obey the [0,1] distribution. After multiple sampling calculations of the impact point, the component damage probability is obtained.

[0066] Step 4: The damage law of armored targets damaged by shaped-charge warheads is described by penetration depth or residual thickness. The damage probability of components to tank components and crew members is calculated without considering the damage caused by high temperature during the penetration process:

[0067] P b-jn =P j ×P s

[0068] Where: P j is the probability of penetration depth, P s is the probability of failure of a component after being penetrated. j Normal distribution is the mean penetration depth, σ is the standard deviation ( σ is the characteristic parameter of the warhead damage element, which can be customized or prefabricated by the user). Then the damage criterion for the critical compartment is that the protection compartment is considered to be in failure if the remaining thickness is less than zero, and the probability of failure of its components after being penetrated is:

[0069]

[0070] Step 5: Determine the probability of the target damage level based on the minimum cut set probability of the damage tree. If the minimum cut sets are independent of each other, let the minimum cut set C j There are m bottom events in it, and the damage probability distribution is P bi ,(P bi is the probability that the i-th component is hit by the damage element), because C j is the product event of the bottom event, so the minimum cut set C j The probability is:

[0071]

[0072] The top event T is the sum event of n minimum cut sets, so the probability of the top event is:

[0073]

[0074] If the minimum cut sets are not independent of each other due to the same bottom events, the inclusion-exclusion principle is used for calculation, that is:

[0075]

[0076] Step 6: Virtually demonstrate the target damage analysis process and evaluation results through the visual simulation module. The demonstration screen is as follows: Figure 5 shown.

[0077] Example 2

[0078] The implementation process of damage assessment of aerial targets (helicopters) based on fragmentation warheads. Among them, the operation, theory and program core of steps 1, 2, 3, and 5 are basically the same, so they will not be repeated;

[0079] Step 4: The fragmentation warhead penetrates the target protective armor using the fragment specific kinetic energy E b The relative kinetic energy of the fragments can be expressed as:

[0080]

[0081] in, S is the fragment display area (or the windward area of ​​the fragment); and m f is the mass of the fragments when they hit the target; v b is the speed of the fragments when they hit the target; φ is the shape factor of the fragments, b Al is the equivalent aluminum thickness, σ AL is the yield strength of hard aluminum material, σ b The yield strength of the raw material, b0 is the thickness of the component raw material, and the value of the steel fragment shape factor φ is shown in Table 4.

[0082] Table 4 Shape coefficient φ value of steel fragments

[0083]

[0084] The probability of a single fragment penetrating jc With E b The relationship is:

[0085]

[0086] When the damage accumulation of multiple fragments to the target is ignored, that is, each fragment killing the target is an independent event, assuming that there are m fragments hitting the i-th surface of the component, then according to the principle of calculating the probability of the sum of independent events, the probability of the fragments hitting the surface killing the component is:

[0087]

[0088] Taking into account the six faces of the component model, different fragments may hit different faces, so the kill probability of the component is:

[0089]

[0090] During the mechanical penetration of fragments, the flammable materials will burn due to the thermal effect, resulting in component damage. The probability of ignition of the fuel tank by the impact of fragments is related to the target flight altitude. As the altitude increases, the temperature and pressure of the surrounding environment decrease, and the ignition probability decreases. The probability of ignition of the fuel tank by the impact of fragments at altitude H is approximately:

[0091]

[0092]

[0093] Where: is the probability of ignition of the fuel tank by the impact of ground fragments; H is the flight altitude of the aircraft; F(H) is the function of the influence of altitude on the ignition probability. Ignition probability:

[0094]

[0095] The detonation damage of fragments refers to the explosion of explosives caused by fragments after penetrating the target warhead shell. The probability of fragments detonating the ammunition warhead is

[0096]

[0097] In the formula, ρ d is the explosive charge density of the ammunition warhead; ρ t h is the material density of the ammunition warhead shell; z is the equivalent duralumin thickness of the ammunition warhead shell, and m is the mass of the fragment.

[0098] Step 6: Virtually demonstrate the target damage analysis process and evaluation results through the visual simulation module. The demonstration screen is as follows: Figure 6 shown.

[0099] Example 3

[0100] The implementation process of damage assessment of ground buildings (tunnel command posts) based on explosive warheads. Among them, the operation, theory and program core of steps 1, 2, 3, and 5 are basically the same, so they will not be repeated;

[0101] The damage of explosive warheads to building targets is measured by shock wave overpressure. Considering the energy consumed by the fragments generated by the warhead charge driving the shell, the pressure of the shock wave after the detonation is reduced to about half of the original pressure.

[0102] Shock wave overpressure:

[0103]

[0104] Probability of Killing:

[0105]

[0106] Where w is the TNT equivalent of the main explosive, R is the distance from the target to the explosion center, △p f and △p cr is the effective range of overpressure of the shock wave field to kill the target. For targets such as aircraft, △p is generally taken as cr =0.05Mpa, △p f =0.20MPa.

[0107] The threshold value of spalling and penetration damage of concrete structures under explosive loads is used to analyze and evaluate the damage of charges and warhead explosions to concrete structures.

[0108] The threshold for spalling is:

[0109]

[0110]

[0111] a=-0.02511, b=0.01004, c=0.13613

[0112] The threshold for penetration damage is:

[0113]

[0114] Where: T is the thickness of the concrete structure (ft); R is the distance between the concrete slab and the center of gravity of the charge (ft); f is the distance between the concrete slab and the center of gravity of the charge (ft); c is the compressive strength of concrete (psi); W adj =0.5*W, where W is the equivalent TNT charge mass (lb).

[0115] Step 6: Virtually demonstrate the target damage analysis process and evaluation results through the visual simulation module. The demonstration screen is as follows: Figure 7 shown.

[0116] The warhead types of this system include shaped energy, fragmentation, penetration and detonation. Typical targets include ground armor, light air armor and ground buildings. Interfaces are reserved for the expansion of other types of targets. Comparative evaluation of the damage level, damage probability, ammunition consumption and strike plan of different weapon types and different dosages on different targets can be carried out. It provides a platform and technical support for target protection design, weapon and ammunition development, and simulation training and simulation.

Claims

1. A typical target vulnerability damage assessment method, characterized in that: Includes steps: Determine the map environment model, warhead model, target vulnerability model and projectile-target intersection conditions; Generate a target damage tree of the target vulnerability model based on the mapping relationship between the target's function and physical damage; Establish the transformation matrix between the missile body coordinate system and the target coordinate system to obtain the relative position relationship before and after the missile and target intersect; Based on the Monte Carlo method and circular probability deviation, the aiming point coordinates are determined to generate random drop points, the terminal effect of the superposition of the static power field of the warhead damage element and the damage effect field distribution and the load state of the components are determined by the radiographic detection method; Conduct physical damage analysis on target components based on damage criteria and damage element types to determine the damage probability of the components; Determine the overall damage rate of the target based on the damage tree minimum cut set theory and obtain the damage effectiveness evaluation conclusion; The overall damage rate of the target is determined according to the damage tree minimum cut set theory: In the formula, m represents the minimum cut set C j The number of bottom events included in P bi is the damage probability distribution, n is the number of minimum cut sets, the top event T is the sum event of n minimum cut sets, and P(T) is the top event probability, that is, the overall damage rate of the target.

2. A typical target vulnerability damage assessment method according to claim 1, characterized in that: The establishment of a conversion matrix between the projectile coordinate system and the target coordinate system specifically includes: Assume the missile body coordinate system O1-x1y1z1 and the tank target coordinate system O-xyz, and point C (x0, y0, z0) is the landing point of the projectile flight surface, point A is the projection point of the projectile on the target plane, that is, the landing point of the projectile invading the target. Assume that when the projectile explodes, the random trajectory of the projectile is parallel to the z1 axis, then the angle θ between the z1 axis and the z axis is the incident angle of the random trajectory of the projectile; OB is the projection of the z1 axis on the target coordinate system O-xyz plane, and the angle γ between OB and the x axis is the azimuth of the random trajectory of the projectile; rotate the flight plane around the z1 axis by an angle of γ, and the coordinates of point C can be obtained as follows: Rotate the rotated coordinate system around the axis by angle θ, then the coordinates of point C are: The transformation matrix N between the missile body coordinate system and the target coordinate system is obtained as:

3. A typical target vulnerability damage assessment method according to claim 1, characterized in that: The random landing points are: In the formula, (X0, Y0) is the coordinate of the aiming point, (X, Y) is the coordinate of the random landing point, σ x is the standard deviation of the vertical dispersion, σ y The horizontal dispersion standard deviation, CEP is the circular probability deviation of the missile impact point distribution, r1 and r2 are random numbers that obey the [0,1] distribution.

4. A typical target vulnerability damage assessment method according to claim 1, characterized in that: The warhead is a shaped-energy warhead, the target is an armored target, the map environment is a desert, and the shaped-energy warhead damages the armored target using the penetration depth or the remaining thickness to describe the damage law. The component damage probability is: P b-jn =P j ×P s Where P j is the probability of penetration depth, P s is the probability of failure of a component after being penetrated, where the probability of penetration depth P j Normal distribution is the mean penetration depth, σ is the standard deviation, and the probability of failure of the component after being penetrated is: Where x is the actual penetration depth.

5. A typical target vulnerability damage assessment method according to claim 1, characterized in that: The warhead is a fragment warhead, the target is an aerial target, and the fragment warhead penetrates the target protective armor using the fragment specific kinetic energy E b Measure the fragments' kinetic energy E b for: in, S is the fragment display area; m f is the mass of the fragments when they hit the target; v b is the speed of the fragments when they hit the target; φ is the shape factor of the fragments, b Al is the equivalent aluminum thickness, σ AL is the yield strength of hard aluminum material, σ b The yield strength of the raw material, b0 is the thickness of the raw material of the component; The probability of a single fragment penetrating jc With E b The relationship is: The kill probability of the component is: Among them, i and m mean that there are m fragments in the hit on the i-th face; The probability of an aerial target igniting a fuel tank is: The probability of fragments detonating the warhead of the munition is: In the formula, ρ d is the explosive charge density of the ammunition warhead; ρ t h is the material density of the ammunition warhead shell; z is the equivalent duralumin thickness of the ammunition warhead shell, and m is the mass of the fragment.

6. A typical target vulnerability damage assessment method according to claim 1, characterized in that: The warhead is a detonation warhead, the target is a ground building, and the killing probability is: In the formula, △p cjb is the shock wave overpressure, w is the TNT equivalent of the main explosive, R is the distance between the target and the explosion center, △p f and △p cr The effective range of the overpressure for the shock wave field to kill the target; The threshold of spalling and penetration damage of concrete structures of ground buildings under blast loads is: The peeling threshold is: a=-0.02511, b=0.01004, c=0.13613 The penetration damage threshold is: a=0.028205, b=0.144308, c=0.049265 Where, T is the thickness of the concrete structure; R is the distance between the concrete slab and the center of gravity of the charge; f is the distance between the concrete slab and the center of gravity of the charge; c is the compressive strength of concrete; W adj =0.5*W, W is the equivalent TNT charge mass.

7. A typical target vulnerability damage assessment method according to claim 6, characterized in that: The target is an aircraft type target, △p cr =0.05Mpa, △p f =0.20MPa.

8. A typical target vulnerability damage assessment method according to any one of claims 1 to 7, characterized in that: The method also includes the step of visually demonstrating the evaluation process and evaluation conclusions.

9. A typical target vulnerability damage assessment system, characterized in that: It includes model database module, scenario design module and visual simulation demonstration module, among which: The model database module is used for storing, inputting and editing information data of the map environment model, the warhead model, the target vulnerability model and the missile-target intersection condition parameters, and generating a target damage tree of the target vulnerability model based on the mapping relationship between the function and physical damage of the target; The scenario design module is used for the integrated management of target damage assessment, including the design of target damage assessment scenario, visual editing and scenario modification of the simulation process. The design of the target damage assessment scenario includes: establishing a conversion matrix between the missile body coordinate system and the target coordinate system to obtain the relative position relationship before and after the intersection of the missile and the target; conducting damage effectiveness analysis, determining the aiming point coordinates based on the Monte Carlo method and circular probability deviation to generate random drop points, calculating the terminal effect of the superposition of the missile-target kinematic parameters and the static power field of the warhead damage element, and determining the damage effect field distribution and the loading state of the components through the ray detection method; conducting physical damage analysis of the target components according to the damage criterion and the damage element type to determine the damage probability of the components; determining the overall damage rate of the target according to the damage tree minimum cut set theory to obtain the damage effectiveness evaluation conclusion; The visual simulation demonstration module is used for operation control, dynamic intervention, recording of the target damage assessment simulation process, and display of the assessment results; The overall damage rate of the target is determined according to the damage tree minimum cut set theory: In the formula, m represents the minimum cut set C j The number of bottom events included in P bi is the damage probability distribution, n is the number of minimum cut sets, the top event T is the sum event of n minimum cut sets, and P(T) is the top event probability, that is, the overall damage rate of the target.

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