A method and system for rapid assessment of air blast and fragment composite injury

Abstract

The application provides a kind of air shock wave and fragment composite injury rapid evaluation method and system, it is related to data processing technical field.The method comprises: obtaining explosion working condition parameters;According to the explosion working condition parameters, determine the peak value of air shock wave overpressure;According to the peak value of air shock wave overpressure, determine the damage probability value of air shock wave to personnel;According to the explosion working condition parameters, determine the initial velocity of fragment and the number of fragments;According to the initial velocity of fragment and the number of fragments, determine the damage probability value of fragment to personnel;Comprehensive air shock wave damage probability value of personnel and the damage probability value of fragment to personnel, evaluate air shock wave and fragment composite damage probability value.The application can quickly evaluate air shock wave and fragment composite damage probability value, the evaluation cost is low, the implementation difficulty is small, without complex biological modeling, evaluation time is short, can meet the timeliness demand of emergency treatment, can provide more rapid, convenient decision support for actual rescue.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of data processing, in particular to a method and system for rapid assessment of air shock wave and fragment combined injury. BACKGROUND

[0002] Weapons and ammunition explode in the air to produce air shock waves and fragments, causing air shock wave and fragment combined injury to the human body. Rapid assessment of combined injury can guide emergency treatment and training in peacetime.

[0003] Currently, the air shock wave and fragment combined injury to the human body is mainly assessed by experiment and finite element simulation.

[0004] Using explosion test to assess the combined injury of the human body requires simulated warhead actual explosion test, collection of air shock wave power parameters and fragment mass, speed and other parameters, and equivalence of damage to the simulated human body, and then assessment of the air shock wave and fragment combined injury to the human body. The test assessment has high economic cost and great implementation difficulty.

[0005] Using finite element simulation for assessment requires establishment of a human body finite element model and explosion shock wave and fragment power model, simulation of air shock wave formation, propagation and interaction with the human body, obtaining of human body shock response and biomechanical damage, and then assessment of the air shock wave and fragment combined injury to the human body. The simulation assessment has complex biological modeling and time-consuming simulation analysis. SUMMARY

[0006] In order to solve the technical problems in the prior art that the explosion test is used to assess the combined injury of the human body, the test assessment has high economic cost and great implementation difficulty, the finite element simulation is used for assessment, the simulation assessment has complex biological modeling and time-consuming simulation analysis, and the rapid assessment requirement cannot be met and the timeliness requirement of emergency treatment cannot be met, the present application provides a method and system for rapid assessment of air shock wave and fragment combined injury.

[0007] The technical scheme provided by the embodiments of the present application is as follows:

[0008] First aspect

[0009] The method for rapid assessment of air shock wave and fragment combined injury provided by the embodiments of the present application comprises:

[0010] S1: Obtain explosion working condition parameters;

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

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

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

[0014] S5: determining the damage probability value of the fragments on the personnel according to the initial velocity of the fragments and the number of fragments;

[0015] S6: evaluating the combined damage probability value of the air shock wave and the fragments by comprehensively considering the damage probability value of the air shock wave on the personnel and the damage probability value of the fragments on the personnel.

[0016] The second aspect

[0017] The embodiment of the present application provides a kind of air shock wave and fragment composite injury rapid evaluation system, comprising:

[0018] Processor;

[0019] Memory, computer readable instructions are stored on the memory, the computer readable instructions are implemented when the processor is executed, as described in the first aspect the air shock wave and fragment composite injury rapid evaluation method.

[0020] The third aspect

[0021] The embodiment of the present application provides a kind of computer readable storage medium, which stores computer program, and the program is executed when processor realizes the air shock wave and fragment composite injury rapid evaluation method as described in the first aspect.

[0022] The technical scheme provided by the embodiment of the present application has at least the following beneficial effects:

[0023] In the present application, the damage probability value of the air shock wave on the personnel is determined according to the simulated air shock wave overpressure peak value, the damage probability value of the fragment group on the personnel is determined according to the simulated initial velocity of the fragments and the number of fragments, and then the combined damage probability value of the air shock wave and the fragments is rapidly evaluated by comprehensively considering the damage probability value of the air shock wave on the personnel and the damage probability value of the fragment group on the personnel. 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 support can be provided for actual rescue. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1A schematic flow chart of a method for rapid assessment of combined injuries caused by air shock waves and fragments provided in an embodiment of the present invention;

[0026] Figure 2 A schematic structural diagram of a method for rapid assessment of combined injuries caused by air shock waves and fragments provided in an embodiment of the present invention;

[0027] Figure 3 A schematic structural diagram of a rapid assessment system for combined air shock wave and fragment injuries provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is described below in conjunction with the accompanying drawings.

[0029] In the embodiments of the present invention, words such as "exemplarily" and "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as an "exemplary" in the present invention should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of the word "exemplary" is intended to present concepts in a concrete manner. Furthermore, in the embodiments of the present invention, "and / or" can mean both or either of the two.

[0030] In the embodiments of the present invention, the terms "image" and "picture" may be used interchangeably. It should be noted that, when the distinction between them is not emphasized, their intended meanings are the same. The terms "of," "corresponding," and "corresponding" may be used interchangeably. It should be noted that, when the distinction between them is not emphasized, their intended meanings are the same.

[0031] In the embodiments of the present invention, sometimes a subscript such as W1 may be written as a non-subscript such as W1. When the difference is not emphasized, the meanings to be expressed are the same.

[0032] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0033] Reference Manual Figure 1 , which shows a flow chart of a method for rapid assessment of combined injuries caused by air shock waves and fragments provided by an embodiment of the present invention.

[0034] Reference Manual Figure 2 , shows a structural schematic diagram of a method for rapid assessment of combined injuries of air shock waves and fragments provided by an embodiment of the present invention.

[0035] The embodiment of the present application provides a kind of air shock wave and fragment composite injury rapid evaluation method, this method can be realized by air shock wave and fragment composite injury rapid evaluation equipment, the air shock wave and fragment composite injury rapid evaluation equipment can be terminal or server.The processing flow of air shock wave and fragment composite injury rapid evaluation method can include the following steps:

[0036] S1: obtain explosion working condition parameters.

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

[0038] S2: according to explosion working condition parameters, determine air shock wave overpressure peak value.

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

[0040]

[0041] Wherein, Δp r The air shock wave overpressure peak value Δp i Indicates incident shock wave overpressure peak value, p0 indicates standard atmospheric pressure.

[0042] Further, incident shock wave overpressure peak value Δp i Specifically:

[0043]

[0044] Wherein, Indicates proportional blast distance.

[0045] Further, proportional blast distance Specifically:

[0046]

[0047] Wherein, R indicates the distance from explosion point to any point of panel frame, W indicates explosive equivalent.

[0048] In the present application, the method for calculating air shock wave overpressure peak value based on explosion working condition parameters has the characteristics of high efficiency, flexibility and strong adaptability, and can accurately and quickly evaluate the influence of air shock wave on personnel or structure under different scale explosion events.The simplified mathematical model makes the calculation process intuitive and easy to realize in practical application.

[0049] S3: according to air shock wave overpressure peak value, determine air shock wave damage probability value of personnel.

[0050] In a possible implementation, 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] Where Δp r represents the peak overpressure of air shock wave, and P blast represents the probability of injury value of air shock wave to personnel.

[0056] In the present application, by defining the explicit overpressure range and the corresponding injury probability, the risk of injury of personnel by shock wave of different intensity can be quickly estimated. Each overpressure interval is directly associated with the injury probability, so that the evaluation process is simple, easy to understand and apply. Even in complex scenes, based on the measured overpressure value, the possibility of injury can be quickly judged.

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

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

[0059]

[0060] Where v0represents the initial velocity of fragments, represents the Gurney velocity of different explosive types, and β represents the charge mass ratio.

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

[0062]

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

[0064] In the present application, the Gurney equation is a standard equation widely used in the research of ammunition explosion, which can provide reliable prediction for the initial velocity of fragments after verification. 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:

[0066]

[0067]

[0068] wherein N(m f ) represents the number of fragments with mass greater than m f , m t represents the total mass of the warhead shell, μ represents a warhead structure parameter, specifically half of the average mass of the fragments, e represents a natural constant, δ0 represents the shell thickness, d0 represents the inner diameter of the shell, and K represents a constant determined by the charge amount.

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

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

[0071] S401: According to the explosion working condition parameters, determine the initial velocity of the fragments, the number of fragments, and the fragment emission angle.

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

[0073]

[0074] wherein θ represents the fragment emission angle, represents the initial velocity vector of the fragments, represents the explosion blast velocity vector.

[0075] S402: Compare the fragment emission angle with the critical impact angle to determine whether the fragment emission angle is greater than the critical impact angle. If yes, the fragments bounce. Otherwise, the fragments do not bounce.

[0076] S403: When the fragments bounce, according to the initial velocity of the fragments, the number of fragments, and the fragment emission angle, determine the bounce speed and bounce angle of each fragment:

[0077]

[0078] wherein v r represents the bounce speed of the i-th fragment, v i represents the speed of the i-th fragment, θ r represents the bounce angle of the i-th fragment, θ i represents the fragment emission angle of the i-th fragment, and S represents a soil constant of the influence of different ground types on bouncing.c represents the critical impact angle.

[0079] In this invention, the interaction between fragments and the ground is taken into account, making the assessment results applicable not only to the flight of fragments in the air, but also to the behavior of fragments after they hit the ground. The introduction of a ricochet mechanism is particularly important for predicting injuries to personnel at long distances, as ricocheting fragments can pose a threat to distant targets. The ricocheting behavior of fragments may increase the probability of injury to personnel at long distances, which may be a key issue in the assessment in some cases. By considering the speed and angle of fragments after ricocheting, the threat posed by ricocheting fragments to distant targets can be better predicted, especially in complex terrain. This can significantly improve the accuracy of risk assessments for distant targets and help predict the potential damage to personnel from fragments at longer distances.

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

[0081] θ c =10.8S 0.38

[0082] Among them, θ c represents the critical impact angle, and S represents the soil constant that affects the ricocheting effect of different ground types.

[0083] It's important to note that the soil constant S can be flexibly adjusted to suit different ground types. For example, adjusting the value of S on clay, sand, grass, hard soil, and other surfaces can yield a critical impact angle suitable for each condition. Simply changing the value of S allows for rapid adaptation to new environments or ground conditions.

[0084] In this invention, the ricocheting behavior of fragments on different surfaces directly influences the damage assessment to distant targets. By properly calculating the critical impact angle, we can more accurately predict whether fragments will ricochet under different surface conditions, as well as the angle and velocity at which they will ricochet. This is crucial for risk assessment of personnel and targets at long distances.

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

[0086] S5: Determine the probability value of damage to personnel caused by the fragments based on the initial velocity of the fragments and the number of fragments.

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

[0088] S501: Determine the probability of injury to personnel by a single fragment based on the initial velocity and number of fragments:

[0089]

[0090] wherein P h represents the damage probability value of a single fragment to a person, exp represents an exponential function with base number e, m represents the mass of the fragment, v represents the speed of the fragment, and a, b, n represent damage calculation constants.

[0091] In the present application, the damage power of a fragment to a human body is directly reflected by the mass and speed of the fragment, a more accurate single-fragment damage assessment can be provided, errors caused by simple assumptions are avoided, and the prediction accuracy is improved.

[0092] S502: determining the damage probability of a fragment group to a person according to the number of fragments and the damage probability value of a single fragment to a person:

[0093]

[0094] wherein P frag represents the damage probability value of a fragment group 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 group.

[0095] In the present application, the cumulative effect of the fragment group can more comprehensively reflect the damage situation of multiple fragments to a person, and is not limited to the action of a single fragment. This cumulative calculation can better evaluate the comprehensive damage risk of multiple fragments acting on a person at the same time in a complex explosion environment.

[0096] In one possible implementation, in order to more accurately analyze the damage of a fragment to a person, the body part is introduced as an influencing factor. It can be understood that the damage degree is different when different body parts are damaged by a fragment. Therefore, S5 specifically comprises:

[0097] S501: determining the damage probability value of each body part being hit by a fragment by using a lognormal vulnerability curve:

[0098]

[0099] wherein p h (ij) represents the damage probability value of the j-th body part being hit by a fragment, Φ represents a 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 i represents the speed of the i-th fragment, ln represents a logarithmic function with base number e, μ ln (j) represents the mean value of the lognormal distribution of the j-th body part, and σ ln(j) represents the standard deviation of the lognormal distribution of the jth body part.

[0100] In the present application, by using the lognormal vulnerability curve to evaluate the damage probability of fragments to different body parts, the difference in vulnerability 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, and the damage probability of these parts can be calculated respectively by the mean and standard deviation of the lognormal distribution. This way 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 whole, 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 value of each body part when hit by a fragment:

[0102]

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

[0104] where the skilled person in the art can set the size of the weight coefficient of each body part according to the actual situation, and the present application is not limited.

[0105] In the present application, by assigning a weight to each body part, the evaluation result can be adjusted according to the probability of fragments hitting different parts, the exposed area or the fatality. For example, the weight of the head or chest can be higher than that of the limbs, because these parts contribute more to the fatality rate.

[0106] S503: Determine the damage probability of a fragment group 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 a fragment group to a person, P h (i) represents the damage probability value of the ith fragment to a person, and N represents the total number of fragments contained in the fragment group.

[0109] In the present application, the cumulative effect of the fragment group can more comprehensively reflect the damage situation in the real scene, especially when there are many fragments, it can reasonably evaluate the comprehensive damage risk of multiple fragments acting together on a person, and provide more comprehensive evaluation results.

[0110] S6: combine the damage probability value of the air shock wave to the personnel and the damage probability value of the fragments to the personnel, to evaluate the air shock wave and fragment combined damage probability value.

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

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

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

[0114] In the present application, the evaluation of the combined damage can better reflect the cumulative effect generated by the interaction of the damage sources, so that the evaluation is closer to the real situation, and the accuracy and comprehensiveness of the results are improved.

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

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

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

[0118] Generally, γ > 0.

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

[0120] In the present application, in actual explosion, the shock wave and the fragments are not independent. The shock wave can cause the personnel to lose balance or be impacted, so that it is more exposed to the damage of the fragments. By introducing the interaction factor of the shock wave and the fragments, the enhancement effect can be integrated into the calculation of the damage probability, and the accuracy of evaluating the air shock wave and fragment combined damage probability value is improved.

[0121] The technical scheme provided by the embodiment of the present application has at least the following beneficial effects:

[0122] In the present application, the damage probability value of the air shock wave to the personnel is determined according to the simulated calculated air shock wave overpressure peak value, the damage probability value of the fragment group to the personnel is determined according to the simulated calculated initial speed of the fragment and the number of fragments, and then the damage probability value of the air shock wave and the fragment to the personnel is quickly evaluated by comprehensively combining the damage probability value of the air shock wave to the personnel and the damage probability value of the fragment group to the personnel, 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 support can be provided for actual rescue.

[0123] Referring to the accompanying drawings Figure 3 , a structural schematic diagram of a rapid evaluation system for air shock wave and fragment combined injury provided by the present application is shown.

[0124] The present application also provides a rapid evaluation system for air shock wave and fragment combined injury 20, which is applied to the rapid evaluation method for air shock wave and fragment combined injury described above, and comprises:

[0125] A processor 201.

[0126] A memory 202, the memory 202 stores computer readable instructions, and when the computer readable instructions are executed by the processor 201, the air shock wave and fragment combined injury rapid evaluation method of the method embodiment is realized.

[0127] The rapid evaluation system for air shock wave and fragment combined injury 20 provided by the present application can execute the rapid evaluation method for air shock wave and fragment combined injury described above, and realize the same or similar technical effects, to avoid repetition, the present application will not be described again.

[0128] The technical scheme provided by the embodiment of the present application has at least the following beneficial effects:

[0129] In the present application, the damage probability value of the air shock wave to the personnel is determined according to the simulated calculated air shock wave overpressure peak value, the damage probability value of the fragment group to the personnel is determined according to the simulated calculated initial speed of the fragment and the number of fragments, and then the damage probability value of the air shock wave and the fragment to the personnel is quickly evaluated by comprehensively combining the damage probability value of the air shock wave to the personnel and the damage probability value of the fragment group to the personnel, 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 support can be provided for actual rescue.

[0130] It should be appreciated that a processor in the embodiments of the present application can be a central processing unit (CPU), and can 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 gates or transistor logic, discrete hardware components, etc. The general purpose processor can be a microprocessor or the processor can be any conventional processor.

[0131] It should also be appreciated that the memory in the embodiments of the present application can be a volatile memory or a nonvolatile memory, or can include both volatile and nonvolatile memory. The nonvolatile memory can be a read-only memory (ROM), a programmable ROM (PROM), an erasable PROM (EPROM), an electrically EPROM (EEPROM), or a flash memory, among others. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example, and not limitation, a number of 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), among others.

[0132] The above-described embodiments can be implemented in whole or in part by software, hardware (e.g., circuitry), firmware, or any combination thereof. When implemented in software, the above-described embodiments can be implemented 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 and executed on a computer, the processes or functions described in the embodiments of the present application are wholly or partially generated. 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 transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center through wired (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center, etc. containing one or more available medium collections. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium can be a solid-state disk.

[0133] It should be understood that the term "and / or" herein merely describes an association relationship of associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after it, but it can also represent an "and / or" relationship, which can be understood according to the context before and after it.

[0134] In the present application, "at least one" means one or more, and "multiple" means two or more. "At least one of the following" or the like means any combination of the items, including any combination of single or multiple 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 application, the size of the sequence number of each process described above does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0136] Those skilled in the art can clearly understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

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

[0138] In several embodiments provided by the present application, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

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

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

[0141] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application or parts of the present application that essentially contribute to the prior art or parts of the technical solutions can be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in various embodiments of the present application. The aforementioned storage medium includes a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0142] The embodiment of the present application provides a computer readable storage medium, which stores a computer program, and the program is executed by a processor to realize the method for rapidly evaluating air shock wave and fragment combined injury as described in the method embodiment.

[0143] The computer readable storage medium provided by the present application can realize the steps and effects of the method for rapidly evaluating air shock wave and fragment combined injury as described in the method embodiment, and the present application will not be described again to avoid repetition.

[0144] The technical solutions provided by the embodiment of the present application have at least the following beneficial effects:

[0145] In the present application, the damage probability value of the air shock wave to the personnel is determined according to the simulated calculated air shock wave overpressure peak value, the damage probability value of the fragment group to the personnel is determined according to the simulated calculated fragment initial velocity and the number of fragments, and then the damage probability value of the air shock wave and the fragment combined injury is rapidly evaluated by comprehensively combining the damage probability value of the air shock wave to the personnel and the damage probability value of the fragment group to the personnel, which has low evaluation cost, small implementation difficulty, does not need to perform complex biological modeling, has short evaluation time consumption, can meet the timeliness requirement of emergency treatment, and can provide more rapid and convenient decision support for actual rescue.

[0146] The above merely describes specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

[0147] The following points need to be explained:

[0148] (1) The drawings of the embodiments of the present invention only relate to the structures related to the embodiments of the present invention. Other structures may refer to conventional designs.

[0149] (2) For the sake of clarity, the thickness of layers or regions in the drawings used to describe the embodiments of the present invention are exaggerated or reduced, that is, these drawings are not drawn to scale. It is 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 may be "directly" on or "under" the other element or intervening elements may be present.

[0150] (3) In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to form new embodiments.

[0151] The above are only specific embodiments 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 based on the protection scope of the claims.

Claims

1. A method for rapid assessment of air blast and fragment composite injury, characterized in that, The method comprises the following steps: S1: acquiring explosion condition parameters; S2: determining an air shock wave overpressure peak value according to the explosion condition parameters; S3: determining a damage probability value of the air shock wave to personnel according to the air shock wave overpressure peak value; S4: determining a fragment initial speed and a fragment quantity according to the explosion condition parameters; The S4 specifically comprises: S401: determining the fragment initial speed, the fragment quantity and a fragment emission angle according to the explosion condition parameters; The fragment emission angle is specifically: wherein θ represents the fragment launch angle, represents the initial velocity vector of the fragment, represents the blast velocity vector of the explosion S402: comparing the fragment emission angle with a critical impact angle to determine whether the fragment emission angle is greater than the critical impact angle; if yes, the fragment bounces; otherwise, the fragment does not bounce; S403: when the fragment bounces, determining a bounce speed and a bounce angle of each fragment according to the fragment initial speed, the fragment quantity and the fragment emission angle; 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, θ i represents the fragment launch angle of the i-th fragment, S represents the soil constant of the influence of different ground types on ricochet, θ c represents the critical impact angle; S5: determining a damage probability value of the fragment to personnel according to the fragment initial speed and the fragment quantity; S6: comprehensively evaluating an air shock wave and fragment combined damage probability value by combining the damage probability value of the air shock wave to personnel and the damage probability value of the fragment to personnel.

2. The method of rapid assessment of air blast and fragment composite injury according to claim 1, wherein, The air shock wave overpressure peak value is specifically: Where 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: wherein, represents the ratio of the burst; The ratio of the burst distance Specifically: Wherein, R represents a distance from an explosion point to an arbitrary point of a panel frame, and W represents an explosive equivalent.

3. The method of rapid assessment of air blast and fragment composite injury according to claim 1, wherein, The S3 specifically comprises: When Δp r <0.241, P blast = 0%; When 0.241 < Δp < 0.345, P = 1%; and r <0.345, P = 1%; and blast <0.345, P = 1%; and When 0.345 < Δp < 0.448, P = 50%; and r When 0.448 < Δp < 0.5, P = 60%; and blast When 0.5 < Δp < When Δp r ≥ 0.448, P blast = 99%; where Δp r represents the air shock wave overpressure peak value, P blast represents the air shock wave damage probability value to personnel.

4. The method of rapid assessment of air blast and fragment composite injury according to claim 1, wherein, The fragment initial speed is specifically: where v0represents the initial velocity of the fragment, Gurney velocity for different explosive types, and β represents the charge mass ratio. The charge mass ratio β is specifically: Wherein, W represents an explosive equivalent, and M represents a warhead shell mass.

5. The method of rapid assessment of air blast and fragment composite injury according to claim 1, wherein, The fragment quantity is specifically: where N(m f ) represents the number of fragments with mass greater than m f , m t represents the total mass of the warhead case, μ represents a warhead structure parameter, specifically half the average mass of the fragments, e represents the natural constant, δ0represents the case thickness, d0represents the case inner diameter, and K represents a constant determined by the charge weight.

6. The method of rapid assessment of air blast and fragment composite injury according to claim 1, wherein, The critical impact angle is specifically: θ c = 10.8S 0.38 where θ c represents the critical impact angle, S represents the soil constant of the different ground types on the influence of the jumping bullet.

7. The method of rapid assessment of air blast and fragment composite injury according to claim 1, wherein, S5 specifically comprises: S501: determining a damage probability value of a single fragment to personnel according to the fragment initial speed and the fragment quantity: where 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 number, m represents the fragment mass, v represents the fragment velocity, and a, b, n represent damage calculation constants; S502: determining a damage probability of a fragment group to personnel according to the fragment quantity and the damage probability value of the single fragment to personnel: where P frag represents the damage probability value of the fragment group to the personnel, P h (i) represents the damage probability value of the i-th fragment to the personnel, and N represents the total number of fragments contained in the fragment group.

8. The method of rapid assessment of air blast and fragment composite injury according to claim 1, wherein, The air shock wave and fragment combined damage probability value is specifically: P = 1 - (1 - P frag )(1 - P blast ) where P represents the air blast and fragment combined damage probability value, P frag represents the fragment cloud damage probability value to personnel, P blast represents the air blast damage probability value to personnel.

9. A system for rapid assessment of air blast and fragment composite injury, characterized by, The method comprises the following steps: A processor; A memory, wherein computer readable instructions are stored on the memory, and the computer readable instructions are executed by the processor to implement the air shock wave and fragment combined damage rapid evaluation method according to any one of claims 1 to 8.

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