Air shock wave and fragment combined injury rapid assessment method and system

Abstract

The invention provides an air shock wave and fragment composite injury rapid assessment method and system, and relates to the technical field of data processing. The method comprises the steps of obtaining explosion working condition parameters; according to the explosion working condition parameters, the air shock wave overpressure peak value is determined; according to the air shock wave overpressure peak value, the damage probability value of the air shock waves to the personnel is determined; according to the explosion working condition parameters, the initial speed of fragments and the number of the fragments are determined; according to the initial speed of the fragments and the number of the fragments, the damage probability value of the fragments to personnel is determined; and evaluating a composite damage probability value of the air shock waves and the fragments according to the damage probability value of the air shock waves to the personnel and the damage probability value of the fragments to the personnel. According to the method, the air shock wave and fragment composite damage probability value can be rapidly evaluated, the evaluation cost is low, the implementation difficulty is small, complex biological modeling is not needed, the evaluation time consumption is short, the timeliness requirement of emergency treatment can be met, and faster and more convenient decision support can be provided for actual rescue.

Description

Technical Field

[0001] The present invention relates to the technical field of data processing, and particularly to a method and system for rapid assessment of combined injuries caused by air shock waves and fragments. Background Art

[0002] After weapons and ammunitions explode in the air, they will generate air shock waves and fragments, causing combined injuries of shock waves and fragments to the human body. Rapid assessment of combined injuries can guide emergency treatment and peacetime training.

[0003] Currently, the assessment of combined injuries of human body shock waves and fragments is mainly carried out through experiments and finite element simulations.

[0004] Using explosion experiments to evaluate combined injuries of the human body requires conducting full-scale explosion experiments of simulated warheads, collecting parameters such as the power parameters of air shock waves and the mass and velocity of fragments, and equivalenting the injuries of the simulated human body, so as to evaluate the combined injuries of human body shock waves and fragments. The experimental assessment has high economic costs and great implementation difficulties.

[0005] Using finite element simulation for evaluation requires establishing a finite element model of the human body and models of the power of explosion shock waves and fragments, simulating the formation, propagation of air shock waves and their interaction with the human body, obtaining the impact response and biomechanical injuries of the human body, and then evaluating the combined injuries of human body shock waves and fragments. The simulation assessment has complex biological modeling and time-consuming simulation analysis. Summary of the Invention

[0006] In order to solve the technical problems in the prior art that when using explosion experiments to evaluate combined injuries of the human body, the experimental assessment has high economic costs and great implementation difficulties, and when using finite element simulation for evaluation, the simulation assessment has complex biological modeling and time-consuming simulation analysis, and cannot meet the rapid assessment requirements and the timeliness requirements of emergency treatment, the present invention provides a method and system for rapid assessment of combined injuries caused by air shock waves and fragments.

[0007] The technical solutions provided by the embodiments of the present invention are as follows:

[0008] In the first aspect

[0009] A method for rapid assessment of combined injuries caused by air shock waves and fragments provided by an embodiment of the present invention includes:

[0010] S1: Obtain explosion condition parameters;

[0011] S2: Determine the peak overpressure of the air shock wave according to the explosion condition parameters;

[0012] S3: Determine the injury probability value of the air shock wave to personnel according to the peak overpressure of the air shock wave;

[0013] S4: Determine the initial velocity of the fragments and the number of fragments according to the explosion condition parameters;

[0014] S5: Determine the injury probability value of the fragments to personnel according to the initial velocity of the fragments and the number of fragments;

[0015] S6: Evaluate the combined injury probability value of the air shock wave and the fragments by synthesizing the injury probability value of the air shock wave to personnel and the injury probability value of the fragments to personnel.

[0016] Second aspect

[0017] A rapid evaluation system for combined injuries of air shock waves and fragments provided by an embodiment of the present invention includes:

[0018] A processor;

[0019] A memory, on which computer-readable instructions are stored. When the computer-readable instructions are executed by the processor, the rapid evaluation method for combined injuries of air shock waves and fragments as described in the first aspect is implemented.

[0020] Third aspect

[0021] A computer-readable storage medium provided by an embodiment of the present invention, on which a computer program is stored. When the program is executed by a processor, the rapid evaluation method for combined injuries of air shock waves and fragments as described in the first aspect is implemented.

[0022] The beneficial effects brought by the technical solutions provided by the embodiments of the present invention at least include:

[0023] In the present invention, according to the peak overpressure of the air shock wave calculated by simulation, the injury probability value of the air shock wave to personnel is determined. According to the initial velocity of the fragments and the number of fragments calculated by simulation, the injury probability value of the fragment group to personnel is determined. Furthermore, by synthesizing the injury probability value of the air shock wave to personnel and the injury probability value of the fragment group to personnel, the combined injury probability value of the air shock wave and the fragments is rapidly evaluated. The evaluation cost is low, the implementation difficulty is small, no complex biological modeling is required, the evaluation time is short, it can meet the timeliness requirements of emergency treatment, and it can provide faster and more convenient decision-making support for actual rescue. Description of the drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1Schematic flowchart of a method for rapid assessment of combined air shock wave and fragment injuries provided by an embodiment of the present invention;

[0026] Figure 2 Schematic structural diagram of a method for rapid assessment of combined air shock wave and fragment injuries provided by an embodiment of the present invention;

[0027] Figure 3 Schematic structural diagram of a system for rapid assessment of combined air shock wave and fragment injuries provided by an embodiment of the present invention. Detailed implementation manners

[0028] The technical solutions in the present invention will be described below with reference to the accompanying drawings.

[0029] In the embodiments of the present invention, words such as "exemplarily" and "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as an "example" in the present invention should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of the word "example" is intended to present concepts in a specific manner. In addition, in the embodiments of the present invention, the meaning expressed by "and / or" can be both, or either one of the two.

[0030] In the embodiments of the present invention, "image" and "picture" can sometimes be used interchangeably. It should be noted that when the difference is not emphasized, the meanings they express are the same. "Of", "corresponding", and "corresponding" can sometimes be used interchangeably. It should be noted that when the difference is not emphasized, the meanings they express are the same.

[0031] In the embodiments of the present invention, sometimes subscripts such as W 1 may be written in a non-subscript form such as W1. When the difference is not emphasized, the meanings they express are the same.

[0032] To make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

[0033] Referring to the accompanying drawings of the specification Figure 1 shows a schematic flowchart of a method for rapid assessment of combined air shock wave and fragment injuries provided by an embodiment of the present invention.

[0034] Referring to the accompanying drawings of the specification Figure 2 shows a schematic structural diagram of a method for rapid assessment of combined air shock wave and fragment injuries provided by an embodiment of the present invention.

[0035] An embodiment of the present invention provides a method for rapid assessment of combined air shock wave and fragment injury, which can be implemented by a device for rapid assessment of combined air shock wave and fragment injury. The device for rapid assessment of combined air shock wave and fragment injury can be a terminal or a server. The processing flow of the method for rapid assessment of combined air shock wave and fragment injury may include the following steps:

[0036] S1: Obtain explosion condition parameters.

[0037] Optionally, the explosion condition parameters include: explosive equivalent, charge mass ratio, warhead shell mass, explosion velocity, etc.

[0038] S2: Determine the peak overpressure of the air shock wave according to the explosion condition parameters.

[0039] In a possible implementation manner, the peak overpressure of the air shock wave is specifically:

[0040]

[0041] Wherein, Δp r represents the peak overpressure of the air shock wave, Δp i represents the peak overpressure of the incident shock wave, and p 0 represents the standard atmospheric pressure.

[0042] Furthermore, the peak overpressure of the incident shock wave Δp i is specifically:

[0043]

[0044] Wherein, represents the scaled distance of the explosion.

[0045] Furthermore, the scaled distance of the explosion is specifically:

[0046]

[0047] Wherein, R represents the distance from the explosion point to any point on the bulkhead, and W represents the explosive equivalent.

[0048] In the present invention, the method for calculating the peak overpressure of the air shock wave based on the explosion condition parameters has the characteristics of high efficiency, flexibility, and strong adaptability, and can accurately and quickly evaluate the impact of the air shock wave on personnel or structures under explosion events of different scales. Its simplified mathematical model makes the calculation process intuitive and easy to implement in practical applications.

[0049] S3: Determine the injury probability value of the air shock wave to personnel according to the peak overpressure of the air shock wave.

[0050] In a possible implementation manner, S3 specifically includes:

[0051] When Δp r <0.241, P blast = 0%.

[0052] When 0.241 ≤ Δp r <0.345, P blast = 1%.

[0053] When 0.345 ≤ Δp r <0.448, P blast = 50%.

[0054] When Δp r ≥ 0.448, P blast = 99%.

[0055] Among them, Δp r represents the peak overpressure of the air shock wave, and P blast represents the damage probability value of the air shock wave to personnel.

[0056] In the present invention, by defining a clear overpressure range and the corresponding damage probability, the damage risk of shock waves of different intensities to personnel can be quickly estimated. Each overpressure interval is directly associated with the damage probability, making the evaluation process simple, easy to understand and apply. Even in a complex scene, based on the measured overpressure value, the possibility of damage can be quickly judged.

[0057] S4: Determine the initial velocity of the fragments and the number of fragments according to the explosion condition parameters.

[0058] In a possible implementation manner, the initial velocity of the fragments is specifically:[[]]

[0059]

[0060] Among them, v 0 represents the initial velocity of the fragments, represents the Gurney velocity of different explosive types, and β represents the charge mass ratio.

[0061] Furthermore, the charge mass ratio β is specifically:[[]]

[0062]

[0063] Among them, W represents the explosive equivalent, and M represents the mass of the warhead shell.

[0064] In the present invention, the Gurney equation is a standard equation widely used in the research of ammunition explosion, and it has been verified to provide a reliable prediction for the initial velocity of fragments. By using the charge mass ratio to describe the relative proportion of the charge and the warhead shell, the calculation is simplified and flexibility is provided for various explosive types.

[0065] In a possible implementation, the number of fragments is specifically as follows:

[0066]

[0067]

[0068] where N(m f ) represents the number of fragments with a mass greater than m f , m t represents the total mass of the warhead shell, μ represents the warhead structure parameter, specifically half of the average fragment mass, e represents the natural constant, δ 0 represents the shell thickness, d 0 represents the inner diameter of the shell, and K represents a constant determined by the charge amount.

[0069] In the present invention, by considering factors such as the warhead structure characteristics and charge parameters, an exponential decay model is adopted to accurately estimate the number of fragments. It can adapt to different explosion conditions, provide a fast and accurate prediction of the fragment distribution, save experimental and simulation costs, and has wide applicability.

[0070] In a possible implementation, S4 specifically includes sub-steps S401 to S403:

[0071] S401: Determine the initial velocity of the fragments, the number of fragments, and the fragment launch angle according to the explosion condition parameters.

[0072] Optionally, the fragment launch angle is specifically:

[0073]

[0074] where θ represents the fragment launch angle, represents the initial velocity vector of the fragment, represents the explosion bombing velocity vector.

[0075] S402: Compare the fragment launch angle with the critical impact angle to determine whether the fragment launch angle is greater than the critical impact angle. If so, the fragment bounces. Otherwise, the fragment does not bounce.

[0076] S403: When the fragment bounces, determine the ricochet velocity and ricochet angle of each fragment according to the initial velocity of the fragment, the number of fragments, and the fragment launch angle:

[0077]

[0078] where v r represents the ricochet velocity of the i-th fragment, v i represents the velocity of the i-th fragment, θ r represents the ricochet angle of the i-th fragment, θi represents the fragment launch angle of the i-th fragment, S represents the soil constant for the influence of different ground types on ricochet, and θ c represents the critical impact angle.

[0079] In the present invention, the interaction between the fragment and the ground is considered, so that the evaluation result is applicable not only to the flight of the airborne fragment, but also to the behavior of the fragment after hitting the ground. Introducing the ricochet mechanism is particularly important for predicting the injury situation of personnel at a long distance, because the ricochet fragments may pose a threat to distant targets. The ricochet behavior of the fragments may increase the injury probability of personnel at a long distance, which may be a key issue in the evaluation in some cases. By considering the velocity and angle of the ricochet fragments, the threat of the ricochet fragments to distant targets can be better predicted. Especially in complex terrains, the accuracy of the risk assessment of distant targets can be significantly improved, helping to predict the potential harm of the fragments to personnel at a farther distance.

[0080] Optionally, the critical impact angle is specifically:

[0081] θ c = 10.8S 0.38

[0082] where θ c represents the critical impact angle, and S represents the soil constant for the influence of different ground types on ricochet.

[0083] It should be noted that the soil constant S can be flexibly adjusted according to different ground types. For example, on the ground such as clay, sandy land, grassland, hard soil, etc., by adjusting the value of the soil constant S, the critical impact angle applicable to different conditions can be obtained. By simply changing the value of the soil constant S, the new environment or ground situation can be quickly adapted to.

[0084] In the present invention, the ricochet behavior of the fragments on different grounds directly affects the injury assessment of distant targets. By reasonably calculating the critical impact angle, it is possible to more accurately predict whether ricochet will occur for the fragments under different ground conditions, as well as the angle and velocity at the time of ricochet. This is crucial for the risk assessment of distant personnel and targets.

[0085] Furthermore, the ricochet velocity and ricochet angle of the fragments are used as the basic data for subsequent calculation of the injury probability value of the fragments to personnel, so as to introduce the influence of the ricochet mechanism of the fragments on personnel injury.

[0086] S5: Determine the injury probability value of the fragments to personnel according to the initial velocity of the fragments and the number of fragments.

[0087] In a possible implementation manner, S5 specifically includes:

[0088] S501: Determine the damage probability value of a single fragment to a person based on the initial velocity and quantity of the fragments:

[0089]

[0090] Among them, P h represents the damage probability value of a single fragment to a person, exp represents the exponential function with the natural constant e as the base, m represents the mass of the fragment, v represents the velocity of the fragment, and a, b, and n represent damage calculation constants.

[0091] In the present invention, the mass and velocity of the fragments directly reflect the damage power of the fragments to the human body, enabling a more accurate assessment of the damage caused by a single fragment, avoiding errors caused by simple assumptions, and improving the accuracy of prediction.

[0092] S502: Determine the damage probability of a fragment cluster to a person based on the quantity of the fragments and the damage probability value of a single fragment to a person:

[0093]

[0094] Among them, P frag represents the damage probability value of a fragment cluster to a person, P h (i) represents the damage probability value of the i-th fragment to a person, and N represents the total number of fragments contained in the fragment cluster.

[0095] In the present invention, the cumulative effect of the fragment cluster can more comprehensively reflect the damage situation of multiple fragments to a person, rather than being limited to the effect of a single fragment. This cumulative calculation can better evaluate the comprehensive damage risk to a person when multiple fragments act simultaneously in a complex explosion environment.

[0096] In a possible implementation manner, in order to more accurately analyze the damage of fragments to a person, a factor of body part is introduced. It can be understood that when different body parts are hit by fragments, the degree of damage is different. Therefore, S5 specifically includes:

[0097] S501: Use the lognormal vulnerability curve to determine the damage probability value when each body part is hit by a fragment:

[0098]

[0099] Among them, p h (ij) represents the damage probability value when the j-th body part is hit by a fragment, Φ represents the lognormal vulnerability curve, KE i represents the kinetic energy of the i-th fragment, m i represents the mass of the i-th fragment, v irepresents the velocity of the i-th fragment, ln represents the logarithmic function with the natural constant e as the base, μ ln (j) represents the mean of the lognormal distribution of the j-th body part, σ ln (j) represents the standard deviation of the lognormal distribution of the j-th body part.

[0100] In the present invention, by using the lognormal vulnerability curve to evaluate the damage probability of fragments to different body parts, the vulnerability differences of different parts to fragments can be accurately considered. Each body part (such as the head, chest, limbs, etc.) has different responses to fragment damage. Through the mean and standard deviation of the lognormal distribution, the damage probabilities of these parts can be calculated respectively. This method takes into account the physiological differences of different parts of the human body, refines the evaluation of fragment damage, avoids treating the whole body as a single entity, and thus improves the accuracy of the evaluation.

[0101] S502: Determine the damage probability value of a single fragment to a person according to the damage probability values of each body part when hit by the fragment:

[0102]

[0103] where, P h (i) represents the damage probability value of the i-th fragment to a person, ω j represents the weight coefficient of the j-th body part, and n represents the total number of body parts.

[0104] Among them, those skilled in the art can set the magnitudes of the weight coefficients of each body part according to the actual situation, and the present invention does not make any limitations.

[0105] In the present invention, by assigning weights to each body part, the evaluation results can be adjusted according to the probability of the fragment hitting different parts, the exposed area, or the lethality. For example, the weights of the head or chest can be higher than those of the limbs because these parts contribute more to the fatality rate.

[0106] S503: Determine the damage probability of the fragment cluster to a person according to the number of fragments and the damage probability value of a single fragment to a person:

[0107]

[0108] where, P frag represents the damage probability value of the fragment cluster to a person, P h (i) represents the damage probability value of the i-th fragment to a person, and N represents the total number of fragments contained in the fragment cluster.

[0109] In the present invention, the cumulative effect of the fragment group can more comprehensively reflect the damage situation in the real scenario. Especially when the number of fragments is large, it can reasonably evaluate the comprehensive damage risk of multiple fragments acting together on personnel and provide a more comprehensive evaluation result.

[0110] S6: Evaluate the combined damage probability value of the air shock wave and fragments by synthesizing the damage probability value of the air shock wave to personnel and the damage probability value of the fragments to personnel.

[0111] In a possible implementation manner, the combined damage probability value of the air shock wave and fragments is specifically:

[0112] P = 1 - (1 - P frag )(1 - P blast )

[0113] where P represents the combined damage probability value of the air shock wave and fragments, P frag represents the damage probability value of the fragment group to personnel, and P blast represents the damage probability value of the air shock wave to personnel.

[0114] In the present invention, the evaluation of combined damage can better reflect the cumulative effect generated by the interaction of damage sources, making the evaluation closer to the real situation and improving the accuracy and comprehensiveness of the result.

[0115] In a possible implementation manner, an interaction factor of the shock wave and fragments is introduced to correct the comprehensive influence of the shock wave and fragments on the combined damage to personnel. The combined damage probability value of the air shock wave and fragments is specifically:

[0116] P = 1 - [(1 - P frag )(1 - P blast )] γ

[0117] where P represents the combined damage probability value of the air shock wave and fragments, P frag represents the damage probability value of the fragment group to personnel, P blast represents the damage probability value of the air shock wave to personnel, and γ represents the interaction factor of the shock wave and fragments.

[0118] Generally, γ > 0.

[0119] It should be noted that by introducing the interaction factor, the mutual influence of the shock wave and fragments on the human body damage can be reflected. In an explosion, the shock wave may cause personnel to lose balance or be impacted on the body, which may make the damage of the fragments more serious.

[0120] In the present invention, in an actual explosion, the shock wave and fragments do not act independently. The shock wave may cause a person to lose balance or be affected by the impact, making them more exposed to the damage of the fragments. By introducing a shock wave and fragment interaction factor, this enhancement effect can be integrated into the calculation of the injury probability, improving the accuracy of evaluating the combined injury probability value of the air shock wave and fragments.

[0121] The beneficial effects brought by the technical solution provided by the embodiment of the present invention at least include:

[0122] In the present invention, according to the peak overpressure of the air shock wave calculated by simulation, the injury probability value of the air shock wave to a person is determined. According to the initial velocity and the number of fragments calculated by simulation, the injury probability value of the fragment group to a person is determined. Then, by comprehensively considering the injury probability value of the air shock wave to a person and the injury probability value of the fragment group to a person, the combined injury probability value of the air shock wave and fragments can be quickly evaluated. The evaluation cost is low, the implementation difficulty is small, there is no need to perform complex biological modeling, the evaluation time is short, it can meet the timeliness requirements of emergency treatment, and it can provide faster and more convenient decision-making support for actual rescue.

[0123] Refer to the attached Figure 3 illustrates a schematic structural diagram of a rapid evaluation system for combined air shock wave and fragment injuries provided by the present invention.

[0124] The present invention also provides a rapid evaluation system 20 for combined air shock wave and fragment injuries, which is applied to the above-mentioned rapid evaluation method for combined air shock wave and fragment injuries, and includes:

[0125] A processor 201.

[0126] A memory 202, on which computer-readable instructions are stored. When the computer-readable instructions are executed by the processor 201, the rapid evaluation method for combined air shock wave and fragment injuries as in the method embodiment is implemented.

[0127] The rapid evaluation system 20 for combined air shock wave and fragment injuries provided by the present invention can execute the above-mentioned rapid evaluation method for combined air shock wave and fragment injuries and achieve the same or similar technical effects. To avoid repetition, the present invention will not elaborate further.

[0128] The beneficial effects brought by the technical solution provided by the embodiment of the present invention at least include:

[0129] In the present invention, according to the peak overpressure of the air shock wave calculated by simulation, the damage probability value of the air shock wave to personnel is determined. According to the initial velocity and the number of fragments calculated by simulation, the damage probability value of the fragment group to personnel is determined. Furthermore, by comprehensively considering the damage probability value of the air shock wave to personnel and the damage probability value of the fragment group to personnel, the combined damage probability value of the air shock wave and fragments can be rapidly evaluated. The evaluation cost is low, the implementation difficulty is small, complex biological modeling is not required, the evaluation time is short, the timeliness requirement of emergency treatment can be met, and more rapid and convenient decision-making support can be provided for actual rescue.

[0130] It should be understood that the processor in the embodiments of the present invention may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0131] It should also be understood that the memory in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0132] The above embodiments can be implemented in whole or in part by software, hardware (such as circuits), firmware, or any combination thereof. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the processes or functions described in the embodiments of the present invention are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that contains one or more collections of available media. The available medium can be a magnetic medium (such as a floppy disk, hard disk, or magnetic tape), an optical medium (such as a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state drive.

[0133] It should be understood that the term "and / or" in this document is merely a description of the association relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Here, A and B can be singular or plural. In addition, the character " / " in this document generally represents an "or" relationship between the associated objects before and after, but it may also represent an "and / or" relationship, which can be specifically understood with reference to the context.

[0134] In the present invention, "at least one" means one or more, and "a plurality" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can represent: a, b, c, a - b, a - c, b - c, or a - b - c, where a, b, and c can be single or multiple.

[0135] It should be understood that in various embodiments of the present invention, the magnitudes of the sequence numbers of the above processes do not imply the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

[0136] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or in a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0137] Those skilled in the art can clearly understand that for the sake of convenience and brevity of description, the specific working processes of the devices, apparatuses, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be elaborated herein.

[0138] In several embodiments provided by the present invention, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces, and the indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms.

[0139] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they can be located in one place, or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0140] In addition, the functional units in each embodiment of the present invention can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit.

[0141] When the above-mentioned functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs that can store program codes.

[0142] An embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, it implements the rapid assessment method for air shock wave and fragment combined injury as described in the method embodiment.

[0143] The computer-readable storage medium provided by the present invention can implement the steps and effects of the rapid assessment method for air shock wave and fragment combined injury in the above method embodiment. To avoid repetition, the present invention will not elaborate further.

[0144] The beneficial effects brought by the technical solution provided by the embodiments of the present invention at least include:

[0145] In the present invention, according to the peak overpressure value of the air shock wave calculated by simulation, the injury probability value of the air shock wave to personnel is determined. According to the initial velocity and the number of fragments calculated by simulation, the injury probability value of the fragment group to personnel is determined. Furthermore, by comprehensively considering the injury probability value of the air shock wave to personnel and the injury probability value of the fragment group to personnel, the combined injury probability value of the air shock wave and fragments is rapidly evaluated. The evaluation cost is low, the implementation difficulty is small, there is no need to perform complex biological modeling, the evaluation time is short, it can meet the timeliness requirements of emergency treatment, and it can provide more rapid and convenient decision-making support for actual rescue.

[0146] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

[0147] The following points need to be explained:

[0148] (1) The accompanying drawings of the embodiments of the present invention only relate to the structures involved in the embodiments of the present invention, and other structures can refer to the general design.

[0149] (2) For clarity, in the accompanying drawings used to describe the embodiments of the present invention, the thickness of layers or regions is enlarged or reduced, that is, these drawings are not drawn to actual scale. It can be understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, the element can be "directly" on or under the other element or there can be intervening elements.

[0150] (3) Without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0151] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. The protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A rapid assessment method for combined injuries of air shock waves and fragments, characterized in that: include: S1: Obtain explosion condition parameters; S2: determining the peak value of the air shock wave overpressure according to the explosion condition parameters; S3: Determine the probability value of damage to personnel caused by the air shock wave according to the overpressure peak value of the air shock wave; S4: determining the initial velocity of the fragments and the number of the fragments according to the explosion condition parameters; S5: Determine the probability value of damage to personnel caused by the fragments according to the initial velocity of the fragments and the number of fragments; S6: Comprehensively evaluate the probability of injury to personnel caused by air shock waves and the probability of injury to personnel caused by fragments, and assess the probability of combined injury caused by air shock waves and fragments.

2. The rapid assessment method for combined injuries of air shock waves and fragments according to claim 1 is characterized in that: The peak value of the air shock wave overpressure is specifically: Among them, Δp r Indicates the peak overpressure of the air shock wave, Δp i represents the peak overpressure of the incident shock wave, and p0 represents the standard atmospheric pressure; The incident shock wave overpressure peak value Δp i Specifically: in, Indicates proportional explosion distance; The ratio explosion distance Specifically: Among them, R represents the distance from the explosion point to any point on the frame, and W represents the explosive equivalent.

3. The rapid assessment method for combined injuries of air shock waves and fragments according to claim 1 is characterized in that: The S3 specifically includes: When Δp r <0.241, P blast =0%; When 0.241≤Δp r <0.345, P blast =1%; When 0.345≤Δp r <0.448, P blast =50%; When Δp r When ≥0.448, P blast =99%; Among them, Δp r Indicates the peak overpressure of air shock wave, P blast Indicates the probability of injury to personnel caused by air shock wave.

4. The rapid assessment method for combined injuries of air shock waves and fragments according to claim 1 is characterized in that: The initial velocity of the fragments is specifically: Among them, v0 represents the initial velocity of the fragments, represents the Gurney velocity of different explosive types, β represents the charge mass ratio; The charge mass ratio β is specifically: Among them, W represents the explosive equivalent and M represents the mass of the warhead shell.

5. The rapid assessment method for combined injuries of air shock waves and fragments according to claim 1 is characterized in that: The number of fragments is specifically: Among them, N(m f ) indicates that the mass is greater than m f The number of fragments, m t represents the total mass of the warhead shell, μ represents the warhead structural parameters, specifically half of the average mass of the fragments, e represents a natural constant, δ0 represents the shell thickness, d0 represents the shell inner diameter, and K represents a constant determined by the charge.

6. The rapid assessment method for combined injuries of air shock waves and fragments according to claim 1 is characterized in that: The S4 specifically includes: S401: Determine the initial velocity of fragments, the number of fragments, and the fragment launch angle according to the explosion condition parameters; The fragment emission angle is specifically: Where θ represents the fragment launch angle, represents the fragment initial velocity vector, represents the explosion bombing velocity vector; S402: Compare the fragment launch angle with the critical impact angle to determine whether the fragment launch angle is greater than the critical impact angle; if so, the fragment bounces; otherwise, the fragment does not bounce; S403: When the fragments bounce, the ricochet speed and ricochet angle of each fragment are determined according to the initial velocity of the fragments, the number of fragments, and the fragment launch angle: Among them, v r represents the ricochet velocity of the i-th fragment, v i represents the velocity of the i-th fragment, θ r represents the ricochet angle of the i-th fragment, θ i represents the fragment launch angle of the i-th fragment, S represents the soil constant of the impact of different ground types on ricochet, θ c represents the critical impact angle.

7. The rapid assessment method for combined injuries of air shock waves and fragments according to claim 6 is characterized in that: The critical impact angle is specifically: θ c =10.8S 0.38 Among them, θ c represents the critical impact angle, and S represents the soil constant for the effect of different ground types on ricochet.

8. The rapid assessment method for combined injuries of air shock waves and fragments according to claim 1 is characterized in that: S5 specifically includes: S501: Determine the probability value of a single fragment causing injury to personnel based on the initial velocity of the fragment and the number of fragments: Among them, P h represents the probability of injury to personnel by a single fragment, exp represents an exponential function with the natural constant e as the base, m represents the mass of the fragment, v represents the velocity of the fragment, and a, b, and n represent damage calculation constants; S502: Determine the probability of injury to personnel by a group of fragments according to the number of fragments and the probability of injury to personnel by a single fragment: Among them, P frag P represents the probability of damage to personnel caused by fragments. h (i) represents the probability of injury to personnel caused by the i-th fragment, and N represents the total number of fragments contained in the fragment group.

9. The rapid assessment method for combined injuries of air shock waves and fragments according to claim 1 is characterized in that: The composite damage probability of air shock wave and fragments is specifically: P=1-(1-P frag )(1-P blast ) Where P represents the probability of combined damage of air shock wave and fragments, P frag P represents the probability of damage to personnel caused by fragments. blast Indicates the probability of injury to personnel caused by air shock wave.

10. A rapid assessment system for combined injuries caused by air shock waves and fragments, characterized in that: include: processor; A memory having computer-readable instructions stored thereon, wherein when the computer-readable instructions are executed by the processor, the method for rapid assessment of combined injuries of air shock waves and fragments as described in any one of claims 1 to 6 is implemented.

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