Typical underwater target-oriented shaped charge power experiment evaluation method

Abstract

The invention discloses a typical underwater target-oriented shaped charge power experiment evaluation method, and belongs to the technical field of damage evaluation, and the method comprises the following steps: 1, determining a typical underwater target for a shaped charge power experiment, and collecting the related data of the typical underwater target, and 2, according to the related data of the typical underwater target, determining the shaped charge power experiment of the typical underwater target. The method comprises the steps of 1, establishing a simulation test structure of a typical underwater target, and obtaining a damage effect parameter threshold value of the typical underwater target, 3, establishing an evaluation target of a shaped charge warhead for an experiment and the typical underwater target, 4, carrying out a damage effect experiment on the evaluation target to obtain a damage effect parameter of the evaluation target, and 5, calculating the damage effect parameter of the evaluation target. 5, the comprehensive damage effect index of the shaped charge is calculated through the damage effect parameters, and the damage capacity of the shaped charge warhead is determined. The problem that the underwater damage effect cannot be reflected by target characteristics in the aspect of traditional shaped charge power evaluation is solved, and more practical and comprehensive damage power evaluation of shaped charge for the underwater target can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of damage assessment, and in particular to a shaped charge power experimental assessment method for a typical underwater target. Background Art

[0002] With the rapid development of science and technology, my country has made rapid progress in the field of underwater shaped charge explosion power test research, and various new technologies and methods have emerged in an endless stream. These emerging technologies and methods are intertwined with the original classical technologies and methods, forming a relatively complex underwater shaped charge explosion power research system.

[0003] The warhead charges of underwater weapons are mainly divided into shaped charges and blasting charges. Explosive charges use the underwater blasting effect to cause damage to the target. In addition to the underwater blasting effect, shaped charges also have a shaped energy penetration effect. For submarine structural damage, the blasting effect can cause deformation or even tearing of the compartment shell, while the shaped energy effect will produce a shaped energy penetrator that causes shaped energy perforation damage to the shell.

[0004] At present, the assessment method for shaped-charge warheads at home and abroad mainly adopts the method of ground static explosion test, which evaluates its destructive capability according to the perforation aperture of the shaped-charge warhead penetrating the target plate and the number of target plates penetrated. This method only examines the shaped-charge effect, but cannot examine the blasting effect, and cannot truly reflect its actual destructive capability underwater. In addition, different types of warheads may cause different destructive effects on the shell, that is, one or more destructive effect characteristics such as shaped-charge perforation, deformation or tearing may occur. Obviously, one destructive effect parameter cannot reflect the destructive capability of the warhead, and there is currently no evaluation method that comprehensively considers multiple destructive effect parameters.

[0005] In view of the above problems and to make up for the deficiencies of the prior art, the present invention establishes a shaped charge power experimental evaluation method for typical underwater targets. Summary of the invention

[0006] The purpose of the present invention is to provide a shaped charge power experimental evaluation method for typical underwater targets, to solve the problem of target characteristics and inability to reflect underwater damage effects in traditional shaped charge power evaluation, to achieve a more practical and comprehensive damage power evaluation of shaped charges for underwater targets, and to provide support for charge research and development, warhead design, and underwater target damage evaluation.

[0007] To achieve the above object, the present invention provides a shaped charge power experimental evaluation method for a typical underwater target, comprising the following steps:

[0008] S1. Determine typical underwater targets for shaped charge power tests and collect relevant data on typical underwater targets;

[0009] S2. According to the relevant data of typical underwater targets, a simulation test structure of typical underwater targets is established, and the damage effect parameter threshold of typical underwater targets is obtained;

[0010] S3. Establish experimental shaped charge warheads and evaluation targets for typical underwater targets;

[0011] S4. Conducting a damage effect experiment on the evaluation target to obtain damage effect parameters of the evaluation target;

[0012] S5. Calculate the comprehensive damage effect index of the shaped charge through the damage effect parameters to determine the damage capability of the shaped charge warhead.

[0013] Preferably, the typical underwater target refers to a targeted reference target struck by the warhead corresponding to the shaped charge.

[0014] Preferably, the process of identifying typical underwater targets and collecting data in S1 is as follows:

[0015] S11. Observe typical underwater targets and identify their specific models;

[0016] S12. Obtaining relevant data of the typical underwater target shell according to the specific model of the typical underwater target and in combination with public materials;

[0017] S13. Clarify the mechanical performance parameters of the shell material based on the relevant data of the shell.

[0018] Preferably, the relevant data of the typical underwater target shell in S12 includes the diameter, thickness, form, material of the shell and the spacing and size of the shell reinforcement ribs.

[0019] Preferably, the process of establishing a simulation test structure and obtaining a damage effect parameter threshold in S2 is as follows:

[0020] S21. Based on the relevant data and mechanical performance parameters of the typical underwater target shell obtained in S1 and the scope of the test site, determine the scaling ratio of the geometric dimensions of the typical underwater target;

[0021] S22, using materials consistent with the typical underwater target and according to the scaling ratio determined in S21, constructing a simulation test structure of the typical underwater target;

[0022] S23. Test the simulated test structure and obtain a damage effect parameter threshold of the simulated test structure according to the damage level.

[0023] Preferably, the damage levels include level I damage, level II damage and level III damage. Level I damage means that the target disintegrates and sinks, level II damage means that the target must surface immediately and cannot continue to fight, and level III damage means that the target's combat capability is reduced.

[0024] Preferably, the process of establishing a shaped charge warhead and evaluating a target in S3 is as follows:

[0025] S31. Determine the mass of the experimental charge according to the scaling ratio specified in S2 and build a shaped charge warhead for the experiment;

[0026] S32. Establish an evaluation target according to the scaling ratio specified in S2 and in combination with the relevant data of typical underwater targets obtained in S1.

[0027] Preferably, the process of obtaining the damage effect parameter in S4 is as follows:

[0028] S41. Arrange evaluation targets, measuring equipment and circuits, and detonation systems in the test field;

[0029] S42. Check and inventory the experimental system to ensure that the system is safe and normal;

[0030] S43. Start the detonation equipment to start the test. After the experiment, perform multiple manual measurements on the evaluation target and use 3D laser scanning and reconstruction to obtain the damage effect parameters of the evaluation target.

[0031] Preferably, the damage effect parameters obtained in S4 include deformation deflection, energy-gathering rupture diameter and tearing rupture length.

[0032] Preferably, the process of obtaining the comprehensive damage effect index in S5 and determining the damage capability of the shaped charge warhead is as follows:

[0033] S51, comparing each damage effect parameter with the damage effect parameter threshold value corresponding thereto to determine the damage level of the evaluation target;

[0034] S52. Obtain a dimensionless calculated value by summing the ratio of each damage effect parameter to the damage effect parameter threshold value. The process is as follows:

[0035]

[0036] where ω x , l x They represent the damage effect parameter thresholds of deformation deflection, energy-gathering rupture diameter, and tearing rupture length, respectively. When the damage is at level Ⅰ, the value of x is Ⅰ; when the damage is at level Ⅱ, the value of x is Ⅱ; when the damage is at level Ⅲ, the value of x is Ⅲ. ω represents the maximum deformation deflection of the evaluation target. represents the maximum energy-gathering rupture diameter of the evaluation target, l represents the maximum tearing rupture length of the evaluation target, and ε x It represents the comprehensive damage effect index of shaped charge;

[0037] S53. The destructive power of a shaped charge warhead is determined by the size of the comprehensive destructive effect index ε.

[0038] Therefore, the present invention adopts a shaped charge power experimental evaluation method for typical underwater targets with the above-mentioned structure. According to the structural characteristics of typical underwater targets and the damage mechanism of shaped charges, an evaluation index and system for the damage effect of shaped charges on underwater targets are proposed, an evaluation target equivalent model is established, and typical power evaluation experiments are carried out. This solves the problem that the target characteristics of traditional shaped charge power evaluation are single and cannot reflect the underwater damage effect, and realizes a more practical and comprehensive evaluation of the damage power of shaped charges for underwater targets, providing support for charge research and development, warhead design, and underwater target damage evaluation.

[0039] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is an experimental flow chart of a shaped charge power experimental evaluation method for a typical underwater target according to the present invention;

[0041] Figure 2 A typical single-hull submarine pressure hull structure diagram of a shaped charge power experimental evaluation method for a typical underwater target according to the present invention;

[0042] Figure 3 A top view of an evaluation target for a shaped charge power experimental evaluation method for a typical underwater target according to the present invention;

[0043] Figure 4 It is a front view of an evaluation target of a shaped charge power experimental evaluation method for a typical underwater target according to the present invention;

[0044] Figure 5 The invention provides an experimental shaped charge warhead for a shaped charge power experimental evaluation method for a typical underwater target;

[0045] Figure 6 This is a typical single-hull submarine single-hull ring rib structure diagram for a shaped charge power experimental evaluation method for a typical underwater target according to the present invention. DETAILED DESCRIPTION

[0046] Example

[0047] 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, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0048] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] 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.

[0050] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0051] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0053] like Figure 1-Figure 6 As shown above, the present invention provides a shaped charge power experimental evaluation method for a typical underwater target, which selects a single-hull submarine as a typical underwater target for experimentation, and includes the following steps:

[0054] S1. Determine the single-hull submarine for the shaped charge power test and collect relevant data of the single-hull submarine. The process is as follows:

[0055] S11. Observe single-hull submarines and identify their specific models;

[0056] S12. Based on the specific model of the single-hull submarine and in combination with public materials, obtain the relevant data of the single-hull submarine hull, including the diameter, thickness, form, material and the spacing and size of the hull reinforcement ribs;

[0057] S13. Clarify the mechanical performance parameters of the shell material based on the relevant data of the shell.

[0058] S2. According to the relevant data of the single-hull submarine, a simulation test structure of the single-hull submarine is established, and the process of obtaining the damage effect parameter threshold of the single-hull submarine is as follows:

[0059] S21. Based on the relevant data and mechanical performance parameters of the single-hull submarine shell obtained in S1 and the scope of the test site, determine the scaling ratio of the geometric dimensions of the single-hull submarine;

[0060] S22. Using materials consistent with the single-hull submarine and in accordance with the scaling ratio determined in S21, construct a simulation test structure of the single-hull submarine. The simulation test structure may be a characteristic structure entity or a virtual model.

[0061] S23. Test the simulated test structure and obtain a damage effect parameter threshold of the simulated test structure according to the damage level.

[0062] S3. The process of establishing the experimental shaped charge warhead and the evaluation target of the single-hull submarine is as follows:

[0063] S31. Determine the mass of the experimental charge according to the scaling ratio specified in S2 and build a shaped charge warhead for the experiment;

[0064] S32. According to the scaling ratio specified in S2 and in combination with the relevant data of the single-hull submarine obtained in S1, an evaluation target is established. The established evaluation target is a single-hull inner rib cylinder structure target.

[0065] S4. Conduct a damage effect experiment on the evaluation target to obtain the damage effect parameters of the evaluation target:

[0066] S41. Arrange evaluation targets, measuring equipment and circuits, and detonation systems in the test field;

[0067] S42. Check and inventory the experimental system to ensure that the system is safe and normal;

[0068] S43. Start the detonation equipment to start the test. After the experiment, perform multiple manual measurements on the evaluation target and use 3D laser scanning reconstruction to obtain the damage effect parameters of the evaluation target. The damage effect parameters mainly include deformation deflection, charge-bearing rupture diameter and tearing rupture length.

[0069] S5. Calculate the comprehensive damage effect index of the shaped charge through the damage effect parameters to determine the damage capability of the shaped charge warhead.

[0070] S51, comparing each damage effect parameter with the damage effect parameter threshold value corresponding thereto to determine the damage level of the evaluation target;

[0071] S52. Obtain a dimensionless calculated value by summing the ratio of each damage effect parameter to the damage effect parameter threshold value. The process is as follows:

[0072]

[0073] where ω x , l x They represent the damage effect parameter thresholds of deformation deflection, energy-gathering rupture diameter, and tearing rupture length, respectively. When the damage is at level Ⅰ, the value of x is Ⅰ; when the damage is at level Ⅱ, the value of x is Ⅱ; when the damage is at level Ⅲ, the value of x is Ⅲ. ω represents the maximum deformation deflection of the evaluation target. represents the maximum energy-gathering rupture diameter of the evaluation target, l represents the maximum tearing rupture length of the evaluation target, and ε x Represents the comprehensive damage effect index of shaped charge.

[0074] S53. The destructive power of a shaped charge warhead is determined by the size of the comprehensive destructive effect index ε.

[0075] The damage levels include level I, level II and level III. Level I damage refers to the disintegration and sinking of the target, which is mainly manifested in large-scale breaches or deformations in the hull structure, instability of the submarine hull strength or irreversible decrease in buoyancy, and eventual sinking. Level II damage means that the target must surface immediately and cannot continue to fight, which is mainly manifested in medium-scale breaches or deformations in the hull structure, severe decrease in submarine hull strength or buoyancy, and must surface immediately, and cannot continue to perform combat missions. Level III damage refers to a decrease in the target's combat capability, which is mainly manifested in small-scale breaches or deformations in the hull structure, decrease in hull strength, or the holes can be effectively sealed after damage control is activated. The submarine does not have to surface immediately, but its combat capability is reduced.

[0076] The method for determining the damage level of the evaluation target of a single-hull submarine is as follows. Taking the maximum deformation deflection ω as an example, the damage effect parameter thresholds of the three damage levels of the submarine are ω Ⅰ ,ω Ⅱ ,ω Ⅲ , when ω>ω Ⅰ When the submarine damage reaches level I, when ω Ⅰ <ω<ω Ⅱ When the submarine is damaged to level II, Ⅱ <ω<ω Ⅲ When the submarine is damaged, it reaches level III damage. The maximum shaped charge breach diameter The degree of damage of the maximum tear length l is also determined in the same way.

[0077] Therefore, the present invention adopts a shaped charge power experimental evaluation method for typical underwater targets using the above structure.

[0078] 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 shaped charge power experimental evaluation method for typical underwater targets, characterized in that: The following steps are involved: S1. Determine typical underwater targets for shaped charge power tests and collect relevant data on typical underwater targets; S2. According to the relevant data of typical underwater targets, a simulation test structure of typical underwater targets is established, and the damage effect parameter threshold of typical underwater targets is obtained; S3. Establish experimental shaped charge warheads and evaluation targets for typical underwater targets; S4. Conducting a damage effect experiment on the evaluation target to obtain damage effect parameters of the evaluation target; S5. Calculate the comprehensive damage effect index of the shaped charge through the damage effect parameters to determine the damage capability of the shaped charge warhead.

2. The method for experimental evaluation of shaped charge power for typical underwater targets according to claim 1, characterized in that: Typical underwater targets refer to targeted reference targets that are struck by the warhead corresponding to the shaped charge.

3. The method for experimental evaluation of shaped charge power for typical underwater targets according to claim 2, characterized in that: The process of identifying typical underwater targets and collecting data in S1 is as follows: S11. Observe typical underwater targets and identify their specific models; S12. Obtaining relevant data of the typical underwater target shell according to the specific model of the typical underwater target and in combination with public materials; S13. Clarify the mechanical performance parameters of the shell material based on the relevant data of the shell.

4. The method for experimental evaluation of shaped charge power for typical underwater targets according to claim 3, characterized in that: The relevant data of typical underwater target shells in S12 include the shell diameter, thickness, form, material and the spacing and size of the shell reinforcement ribs.

5. The method for experimental evaluation of shaped charge power for typical underwater targets according to claim 4, characterized in that: The process of establishing the simulation test structure and obtaining the damage effect parameter threshold in S2 is as follows: S21. Based on the relevant data and mechanical performance parameters of the typical underwater target shell obtained in S1 and the scope of the test site, determine the scaling ratio of the geometric dimensions of the typical underwater target; S22, using materials consistent with the typical underwater target and according to the scaling ratio determined in S21, constructing a simulation test structure of the typical underwater target; S23. Test the simulated test structure and obtain a damage effect parameter threshold of the simulated test structure according to the damage level.

6. The method for experimental evaluation of shaped charge power for typical underwater targets according to claim 5, characterized in that: The damage levels include level I, level II and level III. Level I damage means that the target disintegrates and sinks, level II damage means that the target must surface immediately and cannot continue to fight, and level III damage means that the target's combat capability is reduced.

7. The method for experimental evaluation of shaped charge power for typical underwater targets according to claim 6, characterized in that: The process of establishing a shaped charge warhead and evaluating the target in S3 is as follows: S31. Determine the mass of the experimental charge according to the scaling ratio specified in S2 and build a shaped charge warhead for the experiment; S32. Establish an evaluation target according to the scaling ratio specified in S2 and in combination with the relevant data of typical underwater targets obtained in S1.

8. The method for experimental evaluation of shaped charge power for typical underwater targets according to claim 7, characterized in that: The process of obtaining the damage effect parameters in S4 is as follows: S41. Arrange evaluation targets, measuring equipment and circuits, and detonation systems in the test field; S42. Check and inventory the experimental system to ensure that the system is safe and normal; S43. Start the detonation equipment to start the test. After the experiment, perform multiple manual measurements on the evaluation target and use 3D laser scanning and reconstruction to obtain the damage effect parameters of the evaluation target.

9. The method for experimental evaluation of shaped charge power for typical underwater targets according to claim 8, characterized in that: The damage effect parameters obtained in S4 include deformation deflection, energy-forming rupture diameter and tearing rupture length.

10. The method for experimental evaluation of shaped charge power for typical underwater targets according to claim 9, characterized in that: The process of obtaining the comprehensive damage effect index in S5 and determining the damage capability of the shaped charge warhead is as follows: S51, comparing each damage effect parameter with the damage effect parameter threshold value corresponding thereto to determine the damage level of the evaluation target; S52. Obtain a dimensionless calculated value by summing the ratio of each damage effect parameter to the damage effect parameter threshold value. The process is as follows: where ω x , l x They represent the damage effect parameter thresholds of deformation deflection, energy-gathering rupture diameter, and tearing rupture length, respectively. When the damage is at level Ⅰ, the value of x is Ⅰ; when the damage is at level Ⅱ, the value of x is Ⅱ; when the damage is at level Ⅲ, the value of x is Ⅲ. ω represents the maximum deformation deflection of the evaluation target. represents the maximum energy-gathering rupture diameter of the evaluation target, l represents the maximum tearing rupture length of the evaluation target, and ε x It represents the comprehensive damage effect index of shaped charge; S53. The destructive power of a shaped charge warhead is determined by the size of the comprehensive destructive effect index ε.

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