Explosive formula optimization design method and system based on unified criterion, and medium

Abstract

The application provides an explosive formula optimization design method and system based on a unified criterion and a medium, relates to the field of explosive formula design, and establishes an explosive power unified criterion based on a typical target, a typical target damage mode, a blast distance and a water depth through numerical simulation calculation, so as to guide the optimization design of the explosive formula according to the criterion. The explosive formula optimization design method and system based on the unified criterion have important guiding significance for more accurate and rapid explosive formula design for damage targets.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of explosive formula design, and particularly relates to an explosive formula optimization design method and system based on a unified criterion and a medium. BACKGROUND

[0002] Generally, the power of underwater explosion is measured by material parameters of explosive or equivalent of shock wave overpressure-impulse based on test data. For underwater explosion load, there are shock wave load with high peak overpressure and short duration and bubble pulsation load with low peak overpressure and long duration. The transmission process and damage effect of the two kinds of loads are greatly influenced by water depth and blast distance. The deformation mechanism of damage target under the action of underwater explosion load is complex. Therefore, establishing a unified criterion of underwater explosion power based on damage mode of damage target and considering water depth is helpful for technical personnel to design underwater explosion with different power for damage target with different water depth.

[0003] Therefore, it is a technical problem to be solved at present to determine the damage mode of typical damage target, consider water depth and blast distance, and establish a unified criterion of underwater explosion. SUMMARY

[0004] The present application provides an explosive formula optimization design method and system based on a unified criterion, which has important guiding significance for more accurate and rapid explosive formula design for damage target.

[0005] To achieve the above object, the present application provides an explosive formula optimization design method based on a unified criterion, comprising the following steps:

[0006] S1, a numerical simulation model of underwater explosion of a typical target is established, a database of explosive power based on a unified criterion is established based on TNT explosive, numerical simulation of underwater explosion of a typical target under the same blast distance and water depth is performed, and a damage mode of the typical target is determined. The damage mode includes two kinds of quantitative data: deformation amount under only deformation condition and breakage size under breakage condition;

[0007] S2, the damage mode of the typical target caused by the shock wave stage and the bubble pulsation stage in the numerical simulation of underwater explosion is extracted respectively, the proportion of the damage mode of the shock wave stage and the damage mode of the bubble pulsation stage in the final damage mode of the typical target under corresponding working conditions is calculated respectively, the contribution rate of the damage degree of the shock wave stage and the bubble pulsation stage in the damage mode of the typical target is obtained, and is recorded as alpha and beta. According to the total energy released by underwater explosive, the sum of shock wave energy and bubble energy is used to express the power of underwater explosive, so alpha+beta=1.

[0008] S3, according to the damage mode of the typical target, respectively, establish the shock wave energy contribution rate, bubble energy contribution rate and the equivalent criterion surface of the damage mode of the explosive power:

[0009] f = (Z, a, b);

[0010] In the formula, f represents the damage mode, Z represents the typical target;

[0011] S4, the equivalent criterion surface is corrected by using the blast distance factor;

[0012] S5, the equivalent criterion surface is corrected by using the water depth factor;

[0013] S6, for any blast distance and water depth, the numerical simulation of underwater explosion of the typical target is carried out, and the damage mode of the typical target is obtained;

[0014] S7, repeat S1-S6, establish the unified criterion surface of the underwater explosive power of different surface typical targets and underwater typical targets.

[0015] Preferably, the explosive power database based on the unified criterion includes

[0016] The typical target to be attacked by the underwater explosive to be optimized is determined, the blast distance of the typical target, the combat water depth and the damage mode of the typical target are determined, and the unified criterion of the explosive power in the explosive power database is determined according to the explosive power.

[0017] The typical target includes different surface typical targets and underwater typical targets.

[0018] Preferably, the equivalent criterion surface is corrected by using the blast distance factor, including

[0019] In the case of the same water depth, the numerical simulation of underwater explosion is carried out, the contribution rates of the shock wave stage and the bubble pulsation stage are determined according to the damage mode, and are recorded as a R , b R , fitting correction curves k αR , k βR , then the equivalent criterion surface is obtained:

[0020] f = (Z, k αR a, k βR b).

[0021] Preferably, the equivalent criterion surface is corrected by using the water depth factor, in the case of the same blast distance, the numerical simulation of underwater explosion is carried out, the contribution rates of the shock wave stage and the bubble pulsation stage are determined according to the damage mode, and are recorded as a H , b H , fitting correction curves k αH , k βH , then the unified criterion surface is obtained:

[0022] f = (Z, k αH ·k αR ·α, k βH ·k βR ·β).

[0023] The explosive formula optimization design system based on unified criterion comprises

[0024] A database module is configured to establish a numerical simulation model of underwater explosion of a typical target, and establish an explosive power database based on unified criterion based on TNT explosive.

[0025] A first numerical simulation module is configured to perform numerical simulation of underwater explosion of a typical target at the same stand-off distance and water depth, and determine a damage mode of the typical target.

[0026] A contribution rate analysis module is configured to extract a damage mode of a typical target caused by a shock wave stage and a bubble pulsation stage in numerical simulation of underwater explosion, respectively, calculate a proportion of the damage mode of the shock wave stage and the damage mode of the bubble pulsation stage in the final damage mode of the typical target under corresponding working conditions, obtain a contribution rate of the damage degree of the shock wave stage and the bubble pulsation stage in the damage mode of the typical target, denoted as α and β, and according to the underwater explosive power, i.e., the total energy released by the explosive, the contribution rate of the shock wave energy and the bubble energy is denoted as α+β=1.

[0027] An equivalent criterion surface establishment module is configured to establish equivalent criterion surfaces of the contribution rate of the shock wave energy and the contribution rate of the bubble energy in explosive power and the damage mode, respectively, according to the damage mode of the typical target.

[0028] A surface correction module is configured to correct the equivalent criterion surfaces by using a stand-off distance factor and correct the equivalent criterion surfaces by using a water depth factor.

[0029] A second numerical simulation module is configured to perform numerical simulation of underwater explosion of a typical target at any stand-off distance and water depth, and obtain a damage mode of the typical target.

[0030] A terminal device comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the method when executing the computer program.

[0031] A computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement the steps of the method.

[0032] Therefore, the present invention adopts the above-mentioned method, system and medium for optimizing the design of explosive formula based on unified criteria. First, based on TNT explosives, the damage patterns of different typical damage targets are established, and the equivalent criterion surface of the explosive power and TNT explosive power under different blasting distance conditions is established. Then, the equivalent criterion surface is corrected using the water depth factor, and then the equivalent criterion of the blasting explosive power based on the damage pattern of the damage target and the water depth is obtained. This guides the optimized design of the explosive formula, which has important guiding significance for more accurate and rapid design of explosive formulas for damage targets. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The present invention is a flow chart of the explosive formulation optimization design method based on unified criteria. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0035] Unless otherwise defined, technical or scientific terms used in the present invention shall have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

[0036] Example 1

[0037] like Figure 1 As shown, the explosive formulation optimization design method based on the unified criterion includes the following steps:

[0038] S1. Establish a numerical simulation model for underwater explosions of typical targets. A database of explosive power based on a unified standard is established using TNT explosives as the basis. Numerical simulations of underwater explosions of typical targets at the same blast distance and water depth are performed to determine damage patterns of the typical targets. The damage patterns include two quantitative data: deformation when only deformation occurs and breach size when breach occurs.

[0039] The explosive power database based on the unified standard includes

[0040] Determine the typical target to be attacked by the underwater explosive to be optimized, the explosion distance from the typical target, the combat water depth, and the expected damage mode of the typical target, and use the unified standard of the explosive power database according to the explosive power;

[0041] The typical targets include different surface typical targets and underwater typical targets.

[0042] S2, the damage mode of the typical target caused by the shock wave stage and the bubble pulsation stage in the underwater explosion numerical simulation is extracted respectively, the proportion of the shock wave stage damage mode and the bubble pulsation stage damage mode in the final damage mode of the typical target under the corresponding working condition is calculated respectively, the contribution rate of the shock wave stage damage degree and the bubble pulsation stage damage degree in the typical target damage mode is obtained, which is denoted as α and β, and according to the underwater explosive power, that is, the total energy released by the explosive, the sum of the shock wave energy and the bubble energy is used to express, then α+β=1;

[0043] S3, according to the damage mode of the typical target, the equivalent criterion surface of the shock wave energy contribution rate and the bubble energy contribution rate in the explosive power and the damage mode is established respectively:

[0044] f=(Z, α, β);

[0045] In the formula, f represents the damage mode, and Z represents the typical target.

[0046] S4, the equivalent criterion surface is modified by using the blast distance factor, including

[0047] Under the condition of the same water depth, the underwater explosion numerical simulation is carried out, the damage contribution rates of the shock wave stage and the bubble pulsation stage are determined according to the damage mode, which are denoted as α R and β R , the correction curves k αR and k βR are fitted, and then the equivalent criterion surface is:

[0048] f=(Z, k αR ·α, k βR ·β).

[0049] S5, the equivalent criterion surface is modified by using the water depth factor, under the condition of the same blast distance, the underwater explosion numerical simulation is carried out, the damage contribution rates of the shock wave stage and the bubble pulsation stage are determined according to the damage mode, which are denoted as α H and β H , the correction curves k αH and k βH are fitted, and then the unified criterion surface is:

[0050] f=(Z, k αH ·k αR ·α, k βH ·k βR ·β).

[0051] S6, the underwater explosion numerical simulation of the typical target under any blast distance and water depth is carried out, and the damage mode of the typical target is obtained;

[0052] S7, repeat S1-S6, and establish the unified criterion surface of the underwater explosive power of different water surface typical targets and underwater typical targets.

[0053] The explosive formula optimization design system based on unified criterion comprises

[0054] A database module is configured to establish a numerical simulation model of underwater explosion of a typical target, and establish an explosive power database based on unified criterion based on TNT explosive.

[0055] A first numerical simulation module is configured to perform numerical simulation of underwater explosion of the typical target under the same explosion distance and water depth, and determine a damage mode of the typical target.

[0056] A contribution rate analysis module is configured to extract damage modes of the typical target caused by a shock wave stage and a bubble pulsation stage in the numerical simulation of underwater explosion, respectively, calculate proportions of the damage modes of the shock wave stage and the bubble pulsation stage in the final damage mode of the typical target under corresponding working conditions, obtain contribution rates of the damage degrees of the shock wave stage and the bubble pulsation stage in the damage mode of the typical target, denoted as alpha and beta, and according to the underwater explosive power, i.e., the total energy released by the explosive, the sum of the shock wave energy and the bubble energy is used, so alpha + beta = 1.

[0057] An equivalent criterion surface establishment module is configured to establish equivalent criterion surfaces of the contribution rates of the shock wave energy and the bubble energy in the explosive power and the damage mode, respectively, according to the damage mode of the typical target.

[0058] A surface correction module is configured to correct the equivalent criterion surfaces by using an explosion distance factor and correct the equivalent criterion surfaces by using a water depth factor.

[0059] A second numerical simulation module is configured to perform numerical simulation of underwater explosion of the typical target under any explosion distance and water depth, and obtain a damage mode of the typical target.

[0060] An embodiment of the present application provides a terminal device. The terminal device of the embodiment comprises a processor, a memory, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps in each of the method embodiments described above are implemented. Alternatively, when the processor executes the computer program, the functions of each module / unit in each of the device embodiments described above are implemented.

[0061] The computer program can be divided into one or more modules / units, which are stored in the memory and executed by the processor to complete the present application.

[0062] The terminal device can be a desktop computer, a notebook computer, a palm computer, a cloud server, and other computing devices. The terminal device can include, but is not limited to, a processor and a memory.

[0063] The processor can be a central processing unit (CPU), a graphics processing unit (GPU), and can also be other general-purpose processors, etc.

[0064] The memory can be used to store the computer program and / or modules, and the processor realizes various functions of the terminal device by running or executing the computer program and / or modules stored in the memory, and calling the data stored in the memory.

[0065] The modules / units integrated in the terminal device, if realized in the form of software function units and sold or used as independent products, can be stored in a computer readable storage medium. Based on such understanding, all or part of the processes in the above-mentioned embodiment methods can also be completed by a computer program instructing related hardware, and the computer program can be stored in a computer readable storage medium. The computer program can realize the steps of the above-mentioned various method embodiments when executed by a processor. The computer program includes computer program code, which can be in the form of source code, object code, executable files or some intermediate forms, etc. The computer readable medium can include any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the contents included in the computer readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction, for example, in some jurisdictions, according to legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunication signals.

[0066] Therefore, the explosive formula optimization design method, system and medium based on the unified criterion have important guiding significance for more accurate and rapid explosive formula design for damage targets.

[0067] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application rather than limit them, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can still be modified or replaced by equivalents, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present application.

Claims

1. A method for optimizing explosive formulations based on a unified criterion, characterized in that: The following steps are involved: S1. Establish a numerical simulation model for underwater explosions of typical targets. A database of explosive power based on a unified standard is established using TNT explosives as the basis. Numerical simulations of underwater explosions of typical targets at the same blast distance and water depth are performed to determine damage patterns of the typical targets. The damage patterns include two quantitative data: deformation when only deformation occurs and breach size when breach occurs. S2. Extract the damage modes of typical targets caused by the shock wave stage and the bubble pulsation stage in the underwater explosion numerical simulation respectively, calculate the proportion of the shock wave stage damage mode and the bubble pulsation stage damage mode in the final damage mode under the typical target corresponding working conditions respectively, and obtain the contribution rate of the shock wave stage damage degree and the bubble pulsation stage damage degree in the typical target damage mode, denoted as α and β. According to the power of the underwater explosive, that is, the total energy released by the explosive, expressed as the sum of the shock wave energy and the bubble energy, then α + β = 1; S3. Based on the damage mode of typical targets, the equivalent criterion surfaces of the shock wave energy contribution rate, bubble energy contribution rate and damage mode in the explosive power are established respectively: f = (Z, α, β); Where, f represents the damage mode, and Z represents the typical target; S4. Modify the equivalent criterion surface using the explosion distance factor; S5. Use the water depth factor to modify the equivalent criterion surface; S6. Numerical simulation of underwater explosion of typical targets at arbitrary explosion distances and water depths to obtain damage patterns of typical targets; S7. Repeat S1-S6 to establish a unified criterion surface for the power of underwater explosives for different typical surface targets and underwater targets.

2. The explosive formulation optimization design method based on unified criteria according to claim 1, characterized in that: The explosive power database based on the unified standard includes Determine the typical target to be attacked by the underwater explosive to be optimized, the explosion distance from the typical target, the combat water depth, and the expected damage mode of the typical target, and use the unified standard of the explosive power database according to the explosive power; The typical targets include different surface typical targets and underwater typical targets.

3. The explosive formulation optimization design method based on unified criteria according to claim 1, characterized in that: The equivalent criterion surface is modified using the explosion distance factor, including Under the same water depth, numerical simulation of underwater explosion is carried out, and the damage contribution rate of shock wave stage and bubble pulsation stage is determined according to the damage mode, which is recorded as α R , β R , fitting correction curve k αR 、k βR , then the equivalent criterion surface is: f=(Z,k αR ·a,k βR ·b).

4. The explosive formulation optimization design method based on unified criteria according to claim 3, characterized in that: The equivalent criterion surface is modified by using the water depth factor. Under the same explosion distance, the underwater explosion numerical simulation is carried out. According to the damage mode, the damage contribution rate of the shock wave stage and the bubble pulsation stage is determined respectively, which is recorded as α H , β H , fitting correction curve k αH 、k βH , then the unified criterion surface is: f=(Z,k αH ·k αR ·α,k βH ·k βR ·β)。 5. The explosive formulation optimization design system based on unified criteria is characterized by: It includes a database module for establishing numerical simulation models of underwater explosions of typical targets and establishing a database of explosive power based on a unified standard using TNT explosives as the basis; The first numerical simulation module is used to perform numerical simulation of underwater explosion of typical targets at the same explosion distance and water depth to determine the damage mode of the typical targets; The contribution rate analysis module is used to extract the damage modes of typical targets caused by the shock wave stage and the bubble pulsation stage in the underwater explosion numerical simulation, calculate the proportion of the shock wave stage damage mode and the bubble pulsation stage damage mode in the final damage mode under the corresponding working conditions of the typical target, and obtain the contribution rate of the shock wave stage and the bubble pulsation stage damage degree in the typical target damage mode, denoted as α and β. According to the power of the underwater explosive, that is, the total energy released by the explosive, it is expressed as the sum of the shock wave energy and the bubble energy, and then α + β = 1; The equivalent criterion surface establishment module is used to establish the equivalent criterion surfaces of the shock wave energy contribution rate, bubble energy contribution rate and damage mode in the explosive power according to the damage mode of typical targets; Surface correction module, used to correct the equivalent calibrated surface using explosion distance factors and water depth factors; The second numerical simulation module is used to numerically simulate underwater explosions of typical targets at arbitrary explosion distances and water depths to obtain damage patterns of typical targets.

6. A terminal device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 4 are implemented.

7. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 4 are implemented.

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