Naval vessel multistage damage equivalent evaluation test system and evaluation method

Abstract

The invention discloses a ship multi-level damage equivalent evaluation test system and an evaluation method. The evaluation test system comprises a ship model data module, a warhead damage efficiency data module, a warhead tail section trajectory construction module, a damage effect simulation calculation module and a ship damage level evaluation calculation module. The naval vessel model data module is used for storing and constructing a three-dimensional model of related contents of a naval vessel and establishing a geometric database and a model library of a modeling software platform; the warhead damage efficiency data module is used for storing damage efficiency data of a warhead on a naval vessel under different working conditions; the warhead tail section trajectory construction module is used for calculating warhead power characterization parameters; the damage effect simulation calculation module is used for calculating the damage effect; and the naval vessel damage level evaluation calculation module is used for calculating the damage level. By adopting the evaluation test system, the overall combat ability of the naval vessel can be accurately evaluated from multiple dimensions.

Description

Technical Field

[0001] The present invention relates to the technical field of damage simulation and evaluation, and in particular to a multi-stage damage equivalent evaluation test system and evaluation method for ships. Background Art

[0002] As modern naval warfare shifts from traditional visual range artillery warfare to multi-dimensional combat forms such as beyond-visual-range precision strikes, electronic warfare, and information warfare, the threats faced by ships are becoming increasingly complex. New anti-ship missiles, torpedoes, drone swarms and other weapons continue to emerge, and their damage modes and effects are very different from before. For example, anti-ship missiles can use high-explosive warheads, armor-piercing warheads, or cluster bomb warheads, causing varying degrees of damage to the superstructure, hull structure, electronic equipment, etc. of the ship. In order to effectively evaluate the survivability of ships in different combat scenarios, it is necessary to evaluate the damage effects of ships, but the traditional damage assessment system cannot adapt to this complex and changeable naval battle damage situation. Summary of the invention

[0003] The purpose of the present invention is to provide a ship multi-level damage equivalent evaluation test system and evaluation method to solve the problems mentioned in the background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides a ship multi-level damage equivalent evaluation test system, including a ship model data module, a warhead damage effectiveness data module, a warhead terminal trajectory construction module, a damage effect simulation calculation module and a ship damage level evaluation calculation module;

[0005] The ship model data module is used to store and construct a three-dimensional model of ship-related content, realize efficient and fast processing of the three-dimensional model, and establish a geometric database and model library of the modeling software platform;

[0006] The warhead damage effectiveness data module is used to store the damage effectiveness data of the warhead to the ship under different working conditions;

[0007] The warhead terminal trajectory construction module is used to calculate the warhead power characterization parameters;

[0008] The damage effect simulation calculation module is used to calculate the damage effect;

[0009] The ship damage level assessment calculation module is used to calculate the damage level.

[0010] Preferably, the ship-related content includes the overall structure, components, structural systems and functional systems of the ship.

[0011] Preferably, the database includes: using typical target basic information classification, target and warhead parameter collection and secondary processing methods to collect detailed intelligence on the target system, obtain key target information, and form a database containing basic information classification and target parameters.

[0012] Preferably, the target system content includes overall structure, components, structural system and functional system.

[0013] Preferably, the damage effectiveness data includes the overall strength, local strength and impact environment of the ship, and the damage effectiveness data is derived from numerical simulation calculations and damage test experiments under typical working conditions.

[0014] Preferably, the calculation of warhead power characterization parameters includes: establishing a spatial distribution probability model of the warhead terminal section on the basis of sorting out and collecting warhead data, generating the spatial coordinates of the explosion point, performing endpoint modeling simulation according to the warhead structure size data and charge data, and calculating the power characterization parameters by combining theoretical analysis and empirical formulas.

[0015] Preferably, the calculation of damage effect includes: acquiring data related to the warhead and the ship, calculating the damage effect, analyzing the evolution law of explosion shock waves and bubble formation under different working conditions, and calculating the overall and local responses to the ship.

[0016] Preferably, the calculation of the damage level includes: based on the damage effect of the ship, evaluating the damage level of the ship by means of a damage tree, damage law and damage criteria.

[0017] The present invention also provides a method for evaluating the multi-level damage equivalence of a ship, comprising the following steps:

[0018] S01. Input basic ship parameters and build a ship model database and model library;

[0019] S02. Inputting the damage effectiveness data of the warhead, and constructing a damage effectiveness database of the warhead on the ship under different working conditions;

[0020] S03, selecting a target ship from the ship model database, and manually or automatically selecting warhead structure size data and charge data;

[0021] S04. On the basis of combing and collecting warhead data, establish a probability model of the spatial distribution of the warhead terminal, generate the spatial coordinates of the explosion point, perform terminal modeling simulation based on the warhead structure size data and charge data, and calculate the power characterization parameters by combining theoretical analysis and empirical formulas;

[0022] S05. Obtain the calculation of the power characterization parameters of the warhead and the relevant data of the ship, calculate the damage effect, analyze the evolution law of the explosion shock wave and bubble formation under different working conditions, calculate the overall and local response to the ship, and the corresponding possible damage to personnel and function;

[0023] S06. Based on the damage effects of the ship, the damage level of the ship is assessed according to the different weights of structural damage, personnel damage and functional damage.

[0024] Therefore, the present invention adopts the above-mentioned ship multi-level damage equivalent evaluation test system and evaluation method, which has the following beneficial effects:

[0025] (1) Based on the simulation calculation results of the damage effect, the system can provide tactical decision support to the commander, such as the priority of ship protection measures and the adjustment of ship operations during combat.

[0026] (2) The present invention can comprehensively evaluate the damage status of a ship, thereby accurately evaluating the remaining combat capability of the ship, and can enhance the survivability of the ship while enhancing the decision-making support capability.

[0027] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of a ship multi-stage damage equivalent assessment test system according to an embodiment of the present invention;

[0029] Figure 2 A ship multi-level damage equivalent evaluation test system according to an embodiment of the present invention is composed of C X0 Determined power distribution map;

[0030] Figure 3 A ship multi-level damage equivalent evaluation test system according to an embodiment of the present invention is composed of C i0 , C P0 Determined power distribution map;

[0031] Figure 4 Flow chart of an evaluation method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] Example

[0035] like Figure 1 As shown, the present invention provides a multi-level damage equivalent evaluation test system for ships, including a ship model data module, a warhead damage effectiveness data module, a warhead terminal trajectory construction module, a damage effect simulation calculation module and a ship damage level evaluation calculation module.

[0036] The ship model data module is used to store and construct three-dimensional models of ship-related content, realize efficient and fast processing of three-dimensional models, and establish the geometric database and model library of the modeling software platform. Ship-related content includes the overall structure, components, structural system and functional system of the ship.

[0037] The warhead damage effectiveness data module is used to store the warhead's damage effectiveness data on ships under different working conditions.

[0038] The warhead terminal trajectory construction module is used to calculate the warhead power characterization parameters.

[0039] The damage effect simulation calculation module is used to calculate the damage effect.

[0040] The ship damage level assessment calculation module is used to calculate the damage level.

[0041] The database includes: classification of typical target basic information, collection and secondary processing of target and warhead parameters, detailed intelligence collection on target systems such as overall structure, components, structural systems, functional systems, etc., acquisition of key target information, and formation of a database containing basic information classification and target parameters.

[0042] The damage effectiveness data includes the overall strength, local strength, impact environment, etc. of the ship. The data comes from numerical simulation calculations and damage test experiments under typical working conditions.

[0043] Calculation of warhead power characterization parameters includes: establishing a spatial distribution probability model of the warhead terminal section on the basis of sorting out and collecting warhead data, generating the spatial coordinates of the explosion point, performing terminal point modeling and simulation according to the warhead structure size data and charge data, and calculating power characterization parameters by combining theoretical analysis and empirical formulas. This can make the calculation of the warhead's effectiveness on the ship more accurate and in line with actual combat needs.

[0044] The spatial distribution probability model of the warhead terminal includes:

[0045] Assume that under a set of working conditions with an initial charge of W0 and an initial explosion distance of R0, the damage level of the vulnerable parts corresponds to a certain damage level. Under this working condition, the peak overpressure C P0 The derived quantity C of specific impulse i0 The values ​​are:

[0046]

[0047] The relationship between the charge amount and explosion distance that produces the same peak overpressure and specific impulse as this working condition satisfies:

[0048]

[0049] Among them, W is the charge mass and R is the explosion distance.

[0050] Converting the above formula into logarithmic form yields:

[0051]

[0052] log 10 R=0.71log 10 W-log 10 C i0 ;

[0053] Log 10 W is the horizontal axis, log 10 R is the ordinate to establish a coordinate system, then the above two equations are two lines passing through the point (log 10 W0,log 10 R0) isolines, such as Figure 2 Center Line C P0 , C i0 shown. Figure 2 The power distribution of different charge amounts and explosion distances relative to the working condition (W0, R0) is shown in the figure, and the peak overpressure contour line C i0 and specific impulse contour C P0With different slopes. When the contour line moves downward in parallel, the corresponding power characteristic parameter increases, and when the contour line moves upward in parallel, the corresponding power parameter decreases. It should be clear that there should be a critical contour line C between the peak overpressure and specific impulse contour lines. X0 ( Figure 2 The working conditions on this contour line can cause the same degree of damage to the wearing parts. X0 All working conditions in the shaded area below the line will cause more serious damage to the wearing parts than the working condition (W0, R0). Let the criterion expression corresponding to the critical contour be:

[0054]

[0055] Among them, C X Represents the derived quantity corresponding to the characteristic parameter X, X can be p m ,i and e,p m represents peak pressure, i represents specific impulse, and e represents energy flux density.

[0056] Pass point (log 10 W0,log 10 The critical contour expression of R0) is:

[0057]

[0058] or

[0059] log 10 R = α0log 10 W-log 10 C X0 ;

[0060] in, Then C X =C X0 It is the damage criterion under the damage level corresponding to the working condition (W0, R0). X0 The damage law based on the "0-1" distribution function determined by the criterion is:

[0061]

[0062] Where P is the damage probability under the damage level corresponding to the working condition (W0, R0).

[0063] Critical contour line C X0is the equal-damage line of vulnerable parts. To determine this curve, at least one other point on the curve needs to be found, that is, to find the working condition points that cause the same damage degree of vulnerable parts under different explosive charges. However, this is an ideal situation. Due to the discreteness, randomness of the actual obtained results and the subjective factors in the evaluation of damage degree, the possibility of obtaining exactly the same damage degree results is extremely small. Therefore, under actual conditions, only an attempt can be made to find the working conditions that are as close as possible to the C X0 line.

[0064] First, one situation to consider is that there is only one working condition (W0, R0) within a certain critical damage degree range, and there are no other working condition structures located in the acute angle area between C P0 and C i0 equipotential lines, as shown in Figure 3 . It is known that under the same peak overpressure, the greater the explosive charge, the greater the damage degree of the structure; under the same specific impulse, the smaller the explosive charge, the greater the damage degree of the structure. At this time, the damage degree corresponding to all working conditions in the obtuse angle area below the C P0 line and the C i0 line must be greater than the working condition (W0, R0), the damage degree of the working conditions in the obtuse angle area above must be less than the working condition (W0, R0), while the relative damage degree of the working conditions in the acute angle area cannot be determined.

[0065] Therefore, from a conservative perspective, the damage laws with a "0-1" distribution in different explosive charge ranges can be established only according to the obtuse angle areas below the two equipotential lines, that is, when W < W0, the specific impulse criterion is adopted:

[0066]

[0067] where C i represents the derived quantity based on the specific impulse.

[0068] When W > W0, the peak overpressure criterion is adopted:

[0069]

[0070] where C P represents the derived quantity based on the peak overpressure.

[0071] Calculating the damage effect includes: obtaining the relevant data of the warhead and the ship, calculating the damage effect, analyzing the evolution laws of the explosion shock wave and bubble formation under different working conditions, and calculating the overall and local responses of the ship.

[0072] Calculating the damage level includes: based on the damage effect of the ship, evaluating the damage level of the ship through methods such as damage trees, damage laws, and damage criteria.

[0073] Such as Figure 4As shown, the present invention also provides a method for multi-level damage equivalent assessment of a ship, comprising the following steps:

[0074] S01. Input basic ship parameters and build a ship model database and model library.

[0075] Basic parameters include ship physical size parameters, ship structure parameters, deck and bulkhead thickness (h), cabin layout information, as well as speed and maneuverability parameters.

[0076] The physical size parameters of a ship include overall length (Loa), waterline length (Lwl), breadth (B), depth (D) and draft (T).

[0077] The ship structural parameters include yield strength (σ_y) and ultimate strength (σ_u), elastic modulus (E), and Poisson's ratio (ν).

[0078] The cabin layout information includes the number and function of cabins, as well as the distribution and connectivity of watertight cabins.

[0079] Speed ​​and maneuverability parameters include maximum speed (V_max), turning radius (R), acceleration performance (t_a) and deceleration performance (t_d).

[0080] S02. Input the warhead damage effectiveness data and construct a database of the warhead's damage effectiveness to ships under different working conditions.

[0081] S03. Select a target ship from the ship model database, and manually or automatically select warhead structure dimension data and charge data.

[0082] S04. On the basis of combing and collecting warhead data, establish a spatial distribution probability model of the warhead terminal section, generate the spatial coordinates of the explosion point, perform terminal point modeling and simulation based on the warhead structure size data and charge data, and calculate the power characterization parameters by combining theoretical analysis and empirical formulas.

[0083] Theoretical analysis and empirical formulas include:

[0084] For TNT charges, the engineering empirical calculation formula for each parameter is:

[0085]

[0086] Where W is the charge mass, in kg, R is the explosion distance, in m, p m represents the peak pressure, i represents the specific impulse, and e represents the energy flux density. In order to facilitate analysis, the expressions of each characteristic parameter are simplified respectively, and the derived quantity based on the peak overpressure is taken as:

[0087]

[0088] From the above formula, we can see that under different working conditions, if C P If the values ​​are equal, the peak overpressure formed by the shock wave is equal. Similarly, the derived quantity C based on the specific impulse can be obtained i and the derived quantity C of energy flux density e They are:

[0089]

[0090] S05. Obtain the calculation of the power characterization parameters of the warhead and the ship-related data, calculate the damage effect, analyze the evolution of the explosion shock wave and bubble formation under different working conditions, calculate the overall and local response to the ship, and the corresponding possible damage to personnel and function.

[0091] S06. Based on the damage effects of the ship, the damage level of the ship is assessed according to the different weights of structural damage, personnel damage and functional damage.

[0092] Therefore, the present invention adopts the above-mentioned ship multi-level damage equivalent assessment test system and assessment method, which not only analyzes the structural damage of the ship, but also comprehensively assesses casualties and damage to ship functions, and can accurately assess the overall combat capability of the ship from multiple dimensions.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A multi-level damage equivalent assessment test system for ships, characterized by: It includes ship model data module, warhead damage effectiveness data module, warhead terminal trajectory construction module, damage effect simulation calculation module and ship damage level assessment calculation module; The ship model data module is used to store and construct a three-dimensional model of ship-related content, realize efficient and fast processing of the three-dimensional model, and establish a geometric database and model library of the modeling software platform; The warhead damage effectiveness data module is used to store the damage effectiveness data of the warhead to the ship under different working conditions; The warhead terminal trajectory construction module is used to calculate the warhead power characterization parameters; The damage effect simulation calculation module is used to calculate the damage effect; The ship damage level assessment calculation module is used to calculate the damage level.

2. A ship multi-level damage equivalent assessment test system according to claim 1, characterized in that: The ship-related content includes the ship's overall structure, components, structural systems and functional systems.

3. A ship multi-level damage equivalent assessment test system according to claim 1, characterized in that: The database includes: using typical target basic information classification, target and warhead parameter collection and secondary processing methods to collect detailed intelligence on the target system, obtain key target information, and form a database containing basic information classification and target parameters.

4. A ship multi-level damage equivalent assessment test system according to claim 3, characterized in that: The target system content includes overall structure, components, structural system and functional system.

5. The multi-level damage equivalent evaluation test system for ships according to claim 1 is characterized by: The damage effectiveness data include the overall strength, local strength and impact environment of the ship, and the damage effectiveness data are derived from numerical simulation calculations and damage test experiments under typical working conditions.

6. A ship multi-level damage equivalent assessment test system according to claim 1, characterized in that: The calculation of warhead power characterization parameters includes: establishing a warhead terminal space distribution probability model based on the collected warhead data, generating explosion point space coordinates, performing terminal point modeling simulation according to warhead structure size data and charge data, and calculating power characterization parameters by combining theoretical analysis and empirical formulas.

7. A ship multi-level damage equivalent assessment test system according to claim 1, characterized in that: The calculation of damage effect includes: obtaining data related to the warhead and the ship, calculating the damage effect, analyzing the evolution law of explosion shock waves and bubble formation under different working conditions, and calculating the overall and local responses to the ship.

8. The multi-level damage equivalent evaluation test system for ships according to claim 1 is characterized in that: The calculation of damage level includes: based on the damage effect of the ship, evaluating the damage level of the ship by means of damage tree, damage law and damage criterion.

9. A method for evaluating multi-level damage equivalent evaluation of a ship, applied to a multi-level damage equivalent evaluation test system for a ship as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: S01. Input basic ship parameters and build a ship model database and model library; S02. Inputting the damage effectiveness data of the warhead, and constructing a damage effectiveness database of the warhead on the ship under different working conditions; S03, selecting a target ship from the ship model database, and manually or automatically selecting warhead structure size data and charge data; S04. On the basis of combing and collecting warhead data, establish a probability model of the spatial distribution of the warhead terminal, generate the spatial coordinates of the explosion point, perform terminal modeling simulation based on the warhead structure size data and charge data, and calculate the power characterization parameters by combining theoretical analysis and empirical formulas; S05. Obtain the calculation of the power characterization parameters of the warhead and the relevant data of the ship, calculate the damage effect, analyze the evolution law of the explosion shock wave and bubble formation under different working conditions, calculate the overall and local response to the ship, and the corresponding possible damage to personnel and function; S06. Based on the damage effects of the ship, the damage level of the ship is assessed according to the different weights of structural damage, personnel damage and functional damage.

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