CN114925534B - Blast warhead design and damage assessment system and method - Google Patents
Blast warhead design and damage assessment system and method Download PDFInfo
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Abstract
The invention discloses an explosive warhead design and damage evaluation system and method, wherein the system comprises an explosive warhead design module, a penetration capability evaluation module and an explosive damage module; the blast warhead design module is used for designing parameters of the warhead and storing the designed parameters of the warhead into a data layer; the penetration capability evaluation module is used for obtaining the warhead parameters of the data layer through data calling, and carrying out penetration capability evaluation by adopting a penetration capability evaluation model according to the preset target action parameters and the warhead parameters to obtain penetration data; and storing the penetration data to a data layer; the explosion damage module is used for obtaining the parameters of a warhead part and penetration data of the data layer through data calling, and carrying out explosion damage evaluation according to the parameters of the warhead part and the penetration data to obtain explosion damage data; and storing the blast damage data to the data layer. The invention solves the problems that the iteration period is long and the information can not be completely and accurately transmitted in the traditional mode, and improves the digitization level of design and evaluation.
Description
Technical Field
The invention relates to the technical field of warhead design and damage assessment, in particular to an explosive warhead design and damage assessment system and method.
Background
Warhead design and damage assessment are important contents for weapon equipment construction, are complex system engineering, and relate to multiple subject fields such as materials science, mechanics, physics and the like. In the traditional concept, warhead design and damage assessment are among the concerns of two different departments, the designer and the user. The traditional warhead design is mainly developed based on expert experience, and a 'drawing and beating' mode is adopted, namely drawing design and experimental verification. Facing to new trend requirements, the mode defects are obvious and difficult to follow, and on one hand, the high-low transition of the design level depends on the experience of designers, and the knowledge is difficult to precipitate and inherit; on the other hand, the visual understanding of the damage effect is difficult to obtain in the design process, the design effect needs to be continuously verified and checked, and the increase of the design efficiency of the warhead is restricted by the overlong iteration period.
In the current design paradigm, designers build geometric models according to experience, submit to a simulation department to carry out numerical calculation to check the reasonability of indexes, then change the satisfied indexes by designers, carry out numerical calculation by designers to carry out damage simulation, and continuously iterate. Meanwhile, in the iterative process, modes such as drawings and documents are mostly adopted, so that the problems that information cannot be accurately transmitted, the original purpose of preorder work is not understood by subsequent node work and the like exist.
Therefore, a system and a method for constructing warhead design and damage assessment with knowledge precipitation and rapid iteration are urgently needed, and an effective way for solving the defects is provided.
Disclosure of Invention
The invention aims to provide a system and a method for designing and evaluating an explosive warhead, which solve the problems that the iteration period is long and information cannot be completely and accurately transmitted in the traditional mode and improve the digitization level of design and evaluation.
The invention is realized by the following technical scheme:
in a first aspect, the invention provides an explosive warhead design and damage assessment system, which is developed and designed on a software architecture comprising a data layer, a functional layer and an interface layer from bottom to top; the system comprises an explosive warhead design module, a penetration capability evaluation module and an explosion damage module;
the blast warhead design module is used for designing parameters of a warhead and storing the designed parameters of the warhead into a data layer;
the penetration capability evaluation module is used for obtaining the warhead parameters of the data layer through data calling, and carrying out penetration capability evaluation by adopting a penetration capability evaluation model according to the preset target action parameters and the warhead parameters to obtain penetration data; storing the penetration data to a data layer;
the explosion damage module is used for obtaining the parameters of a warhead part and penetration data of a data layer through data calling, and carrying out explosion damage evaluation according to the parameters of the warhead part and the penetration data to obtain explosion damage data; and storing the blast damage data to a data layer.
The software architecture comprises a data layer, a functional layer and an interface layer from bottom to top, wherein the bottom layer is the data layer which stores data including materials, experiments, simulation and the like, and the layer realizes standardized storage by defining a data format, calling an interface and the like. The middle layer is a functional layer which mainly comprises a design module and an evaluation module, and the module can be infinitely expanded according to the scene requirements of battle part design and damage evaluation in practical implementation. The middle layer realizes the warhead design and evaluation functions through calling and operating the data layer. The middle layer also stores the data after operation to the data layer, and the key between each module of the functional layer is realized through the data layer, thereby ensuring the lossless data transmission between the modules. The uppermost layer is an interface layer, and visual operation on the functional layer is realized through a human-computer interaction interface. The invention is based on the data layer, all models and parameters are stored in the data layer, and the invention has consistent support for calling each module of the functional layer. Meanwhile, the functional modules are very convenient to use, and cross-team and cross-department cooperation can be realized if the functional modules are deployed through a network.
Further, the warhead parameters include material parameters and geometric parameters;
the material parameters comprise material basic information such as material density, strength, sound velocity and the like;
the geometric parameters comprise the parameter information such as the diameter, the length, the centroid position and the like of the projectile body;
the preset target shooting action parameters comprise the included angle between the target surface and the trajectory and the target landing speed.
Further, the material parameters are stored in a data layer in a tabular database mode, the basic parameters of the material parameters cannot be changed, and the material parameters can be called only by material names when the interface layer is used; for example: the information of the density, the strength, the sound velocity and the like of the 304 steel material is stored in a database of a data layer, the 304 steel material can be selected only through a pull-down frame in the use of an interface layer, and the material parameters cannot be changed.
The geometric parameters are stored in a database folder of the data layer in a standardized text file mode, the parameter information is a design variable, relevant design parameters can be modified in the interface layer according to requirements, and meanwhile relevant parameters are modified in the database folder.
Further, the system further comprises:
the penetration capability evaluation module is also used for comparing the penetration data with a first design target value and evaluating whether the penetration capability meets the requirement: if the penetration data is larger than the first design target value, the requirement is met, if the penetration data is not larger than the first design target value, the parameters of the warhead part of the design are optimized again until the design meets the index requirement; and storing penetration data meeting the requirements to a data layer; wherein the penetration data is the penetration depth of the warhead;
the explosion damage module is further configured to compare the explosion damage data with a second design target value, and evaluate whether the explosion damage capability meets the requirement: if the explosion damage data is larger than the second design target value, the requirement is met, if the explosion damage data is not met, the parameters of the warhead are optimized again until the design meets the index requirement; storing explosion damage data meeting the requirements to a data layer; wherein the blast damage data is the warhead maximum pressure.
Further, the penetration capability evaluation module adopts a penetration capability evaluation model for penetration capability evaluation, and specifically comprises the following steps:
selecting a penetration capability evaluation model and a target type in an interface layer in a pull-down frame mode, and carrying out different types of penetration capability evaluation according to the selected penetration capability evaluation model and the selected target type to obtain a penetration capability evaluation result; storing the penetration capability evaluation result to a data layer by a text file; wherein:
the penetration capability evaluation model comprises a Young empirical formula, a Forrestal empirical formula and a differential surface element;
the target types include strength targets (single homogeneous media), layered targets (multiple media), multi-layer steel targets, and multi-layer story targets.
Further, the expression of the Young empirical formula is as follows:
in the formula: d is penetration depth of the warhead, m; s is a dimensionless penetration resistance coefficient; n is the head coefficient; m is the mass of the elastomer, kg; a is the elastomer sectional area, m 2 (ii) a V is penetration speed, m/s.
Wherein S is related to the warhead material, N and V are obtained by direct design, and m and A are calculated according to the warhead parameters.
Further, the explosion damage module adopts an explosion power evaluation model to evaluate explosion damage, and specifically comprises:
manually inputting calculation input parameters in an interface layer, or acquiring the calculation input parameters by calling the penetration capability evaluation result; the calculation input parameters comprise equivalent weight, end time, maximum distance, explosion mode, atmospheric pressure, incident angle and destruction criterion;
according to the calculation input parameters, performing explosion damage evaluation calculation by adopting an explosion power evaluation model to obtain an explosion damage evaluation result; the explosion damage evaluation result comprises quantitative relations such as the change of pressure intensity of a specific position along with time, the distribution of incident pressure along with distance at a specific moment, the change relation of reflected overpressure along with distance, the impact speed, the relation of arrival time of shock waves and distance and the like.
In a second aspect, the present invention further provides an explosive warhead design and damage assessment method, which is applied to the explosive warhead design and damage assessment system, and the method includes:
carrying out the design of parameters of the warhead, and storing the designed parameters of the warhead in a data layer;
acquiring a warhead parameter of a data layer through data calling, and performing penetration capability evaluation and explosion damage evaluation by adopting a forward design method according to the warhead parameter;
the forward design method comprises the following steps:
acquiring a warhead parameter of a data layer through data calling, and carrying out penetration capability evaluation by adopting a penetration capability evaluation model according to a preset bullet target action parameter and the warhead parameter to obtain penetration data; storing the penetration data to a data layer;
acquiring a warhead parameter and penetration data of a data layer through data calling, and performing explosion damage evaluation by adopting an explosion power evaluation model according to the warhead parameter and the penetration data to obtain explosion damage data; and storing the blast damage data to a data layer.
Further, the method further comprises:
acquiring a warhead parameter of a data layer through data calling, and performing penetration capability evaluation and explosion damage evaluation by adopting a reverse optimization design method according to the warhead parameter;
the reverse optimization design method comprises the following steps:
acquiring a warhead parameter of a data layer through data calling, and carrying out penetration capability evaluation by adopting a penetration capability evaluation model according to a preset bullet target action parameter and the warhead parameter to obtain penetration data; comparing the penetration data with a first design target value, and evaluating whether penetration capacity meets requirements: if the penetration data is larger than the first design target value, the requirement is met, if the penetration data is not larger than the first design target value, the parameters of the warhead part of the design are optimized again until the design meets the index requirement; and storing penetration data meeting the requirements to a data layer; wherein the penetration data is the penetration depth of the warhead;
acquiring a warhead parameter and penetration data of a data layer through data calling, and performing explosion damage evaluation by adopting an explosion power evaluation model according to the warhead parameter and the penetration data to obtain explosion damage data; comparing the explosion damage data with a second design target value, and evaluating whether the explosion damage capability meets the requirement: if the explosion damage data is larger than the second design target value, the requirement is met, if the explosion damage data is not met, the parameters of the warhead are optimized again until the design meets the index requirement; storing explosion damage data meeting the requirements to a data layer; wherein the blast damage data is the warhead maximum pressure.
Further, the warhead parameters include material parameters and geometric parameters;
the material parameters comprise material basic information such as material density, strength, sound velocity and the like;
the geometric parameters comprise parameter information such as the diameter, the length, the centroid position and the like of the projectile body;
the preset target shooting action parameters comprise target surface and trajectory included angles and target landing speeds;
the material parameters are stored in a data layer in a list type database mode, basic parameters of the material parameters cannot be changed, and the material parameters can be called only by material names when an interface layer is used; for example: the information of the density, the strength, the sound velocity and the like of the 304 steel material is stored in a database of a data layer, the 304 steel material can be selected only through a pull-down frame in the use of an interface layer, and the material parameters cannot be changed.
The geometric parameters are stored in a database folder of the data layer in a standardized text file mode, the parameter information is a design variable, relevant design parameters can be modified in the interface layer according to requirements, and meanwhile relevant parameters are modified in the database folder.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the invention relates to a blast warhead design and damage evaluation system and method, wherein the system is developed and designed on a software architecture comprising a data layer, a functional layer and an interface layer from bottom to top; the system comprises an explosive warhead design module, a penetration capability evaluation module and an explosion damage module, and combines a forward design and a reverse optimization design to realize the functions of warhead design, penetration capability and damage evaluation under the same software architecture; the design parameters and the model can be transmitted between the functional modules without loss; each independent functional module can inherit the expert experience; the problems that iteration period is long and information cannot be transmitted accurately in a traditional mode are solved, and the design and evaluation digitization level is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is an integrated architecture diagram of an explosive warhead design and damage evaluation system according to the present invention.
Fig. 2 is a schematic diagram of a forward design of an explosive warhead design and damage evaluation system according to the present invention.
Fig. 3 is a schematic diagram of a forward optimization of an explosive warhead design and damage evaluation system according to the present invention.
Fig. 4 is a schematic diagram of a design module interface of an explosive warhead according to the present invention.
FIG. 5 is a schematic diagram of model parameters obtained by the blast warhead design module of the present invention.
FIG. 6 is a model visualization interface diagram of an explosive warhead design module according to the present invention.
FIG. 7 is a schematic diagram of an entry of a penetration capability assessment module according to the present invention.
FIG. 8 is a schematic diagram of an interface of a penetration capability assessment module according to the present invention.
FIG. 9 is a diagram illustrating the evaluation result of penetration capability of the present invention.
FIG. 10 is a schematic diagram of an interface of an explosion damage assessment module according to the present invention.
Fig. 11 is a diagram illustrating the evaluation result of explosion damage according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
As shown in fig. 1, the system for designing an explosive warhead and evaluating damage according to the present invention is developed and designed on a software architecture including a data layer, a functional layer and an interface layer from bottom to top; as shown in fig. 1, the software architecture includes a data layer, a functional layer, and an interface layer from bottom to top, where the bottom layer is a data layer, where data including materials, experiments, and simulations are stored, and the data layer implements standardized storage by defining a data format and calling an interface. The middle layer is a functional layer which mainly comprises a design module and an evaluation module, and the module can be infinitely expanded according to the scene requirements of battle part design and damage evaluation in practical implementation. The middle layer realizes the functions of warhead design and assessment through calling and operating the data layer. The middle layer also stores the data after operation to the data layer, and the key between each module of the functional layer is realized through the data layer, thereby ensuring the lossless data transmission between the modules. The uppermost layer is an interface layer, and visual operation on the functional layer is realized through a human-computer interaction interface.
The invention is based on the data layer, all models and parameters are stored in the data layer, and the invention has consistent support for calling each module of the functional layer. Meanwhile, the functional modules are very convenient to use, and cross-team and cross-department cooperation can be realized if the functional modules are deployed through a network.
The invention provides a warhead design and damage evaluation framework based on data, and the functions of warhead design, penetration capability and damage evaluation are realized under the same framework; and the design parameters and the model can be transmitted between the functional modules without loss; each individual functional module may inherit expert experience.
As shown in fig. 2, the system comprises an explosive warhead design module, an invasion capacity evaluation module and an explosive damage module;
the blast warhead design module is used for designing parameters of a warhead and storing the designed parameters of the warhead into a data layer;
the penetration capability evaluation module is used for obtaining the warhead parameters of the data layer through data calling, and carrying out penetration capability evaluation by adopting a penetration capability evaluation model according to the preset target action parameters and the warhead parameters to obtain penetration data; storing the penetration data to a data layer;
the explosion damage module is used for obtaining the parameters of a warhead part and penetration data of a data layer through data calling, and carrying out explosion damage evaluation according to the parameters of the warhead part and the penetration data to obtain explosion damage data; and storing the blast damage data to a data layer. (the above is a forward design)
As shown in fig. 3, the system further includes:
the penetration capability evaluation module is also used for comparing the penetration data with a first design target value and evaluating whether the penetration capability meets the requirement: if the penetration data is larger than the first design target value, the requirement is met, if the penetration data is not larger than the first design target value, the warhead parameters of the design are optimized again (an expert experience optimization design method can be adopted) until the design meets the index requirement; and storing penetration data meeting the requirements to a data layer; wherein the penetration data is the penetration depth of the warhead;
the explosion damage module is further configured to compare the explosion damage data with a second design target value, and evaluate whether the explosion damage capability meets the requirement: if the explosion damage data is larger than the second design target value, the requirement is met, if the explosion damage data is not met, the parameters of the warhead are optimized again until the design meets the index requirement; storing explosion damage data meeting the requirements to a data layer; wherein the blast damage data is the warhead maximum pressure. (the above is reverse optimization design)
In this embodiment, the warhead parameters include two categories: material parameters and geometric parameters; the storage of the two parameters is slightly different;
the material parameters comprise material basic information such as material density, strength, sound velocity and the like; the material parameters are stored in a data layer in a list type database mode, the basic parameters of the material parameters cannot be changed, and the material parameters can be called only by material names when an interface layer is used; for example: the information of the density, the strength, the sound velocity and the like of the 304 steel material is stored in a database of a data layer, the 304 steel material can be selected only through a pull-down frame in the use of an interface layer, and the material parameters cannot be changed.
The geometric parameters comprise parameter information such as the diameter, the length, the centroid position and the like of the projectile body; the geometric parameters are stored in a database folder of the data layer in a standardized text file mode, the parameter information is a design variable, relevant design parameters can be modified in the interface layer according to requirements, and meanwhile relevant parameters are modified in the database folder.
The preset bullet target action parameters comprise the included angle between the target surface and the trajectory and the target landing speed.
In this embodiment, the penetration capability evaluation module adopts a penetration capability evaluation model to perform penetration capability evaluation, and specifically includes:
selecting a penetration capability evaluation model and a target type in an interface layer in a pull-down frame mode, and carrying out different types of penetration capability evaluation according to the selected penetration capability evaluation model and the selected target type to obtain a penetration capability evaluation result; storing the penetration capability evaluation result to a data layer in a text file;
specifically, the penetration capability evaluation model comprises a Young empirical formula, a Forrestal empirical formula and a differential surface element; the following is a specific calculation of the Young empirical formula:
the Young empirical formula is a pure empirical formula based on test data, is suitable for soil, rock, concrete, ice and frozen soil, is not suitable for water, metal and air, does not relate to ice and frozen soil, and has the following penetration depth D for the soil, the rock and the concrete:
in the formula: d is penetration depth of the warhead, m; s is a dimensionless penetration resistance coefficient; n is a head coefficient; m is the elastomer mass, kg; a is the sectional area of the elastomer, m 2 (ii) a V is penetration speed, m/s.
Wherein S is related to the warhead material, N and V are obtained by direct design, and m and A are calculated according to the warhead parameters.
For a small-mass penetration body, correction needs to be carried out on the basis of the formula, and when the body is smaller than 27kg for a softer soil target, the correction coefficient is as follows:
K h ＝0.27(m) 0.4 (2)
in the formula: k h Is a quality correction factor;
for concrete and stone hard targets, when the elastomer is less than 182kg, the correction coefficient is as follows:
K h ＝0.46(m) 0.15 (3)
the projectile body related to the invention has large mass and does not need mass correction.
Shape parameter N:
N＝0.18L n /d+0.56
N＝0.18(CRH-0.25) 0.5 +0.56 (4)
in the formula: ln is the warhead length, m; CRH is the curvature parameter of the oval warhead;
the two formulas for the ovoid shells are fully equivalent and can be derived from geometric relationships.
S is used as the representation of the penetration resistance of the target body, fitting is carried out through live ammunition experimental data, and a formula is arranged, wherein the formula is as follows:
S＝K'0.085K e (11-P)(t c T c ) -0.06 (35/f c ') 0.3 (5)
in the formula: p is the percentage of steel content calculated by volume, and the P of the concrete is usually about 1 to 2 percent; tc represents the curing time in years, and all the curing time longer than 1 year is represented as 1 year; tc is Tc as target thickness, and in unit of elastic diameter, tc of the multilayer target needs to be considered independently, the formula is not applicable when Tc is less than 0.5, and can be set as 6 when Tc is more than 6; fc' is the unconfined compression strength during the experiment; k' is a test data correction coefficient, and 1.43 is taken;
based on the above formula, data of penetration depth can be obtained, and by comparing the data with a design target value, whether penetration ability meets requirements or not is evaluated (if the penetration value is greater than the design value, the requirements are met, and if the penetration value is not met, new design is needed).
When the penetration capability meets the requirement, the explosion power of the warhead in the air needs to be evaluated (mainly by pressure). For explosion in the air, the items realize several types of methods of a Friedlander equation, a Martin Larcher equation and a Kingery-Bulmash air shock wave parameter calculation model, and the following calculation process of the Friedlander equation is as follows:
the typical TNT air explosion shock wave engineering model has the pressure of a space observation point being atmospheric pressure P before the shock wave arrives 0 (ii) a Occurrence of explosion t a After the time, the shock wave reaches the observation point where the pressure suddenly increases from atmospheric pressure to a maximum value, the maximum value of the pressure and P 0 Is usually called the incident overpressure peak P i (if the shock wave generates regular reflection after the shock wave acts on an object at the place, the overpressure peak value P of the regular reflection exists r ) (ii) a The pressure of the wave front passing through the rear observation point is rapidly reduced and passes through the time t d Then attenuating to atmospheric pressure; thereafter, the pressure at the observation point is continuously reduced until a negative overpressure peak occurs, and the pressure is gradually increased back to the atmospheric pressure within a certain time, wherein the negative overpressure is equal to P 0 Is usually called negative overpressure peak P n The duration of the negative pressure is t n 。
The pressure of the air shock wave approximately follows an exponential decay law in a positive pressure region, and the pressure decay process can be described by a plurality of empirical formulas, wherein a modified Friedlander equation is closer to an actual process and is simple and easy to calculate:
P＝P 0 ,t＜t a
the formula can obtain the historical evolution relationship of the pressure of the warhead at a certain position away from the initiation point in the air explosion. The explosion damage can be evaluated by the pressure, and when the maximum pressure exceeds the design parameter, the explosion damage efficiency meets the requirement, otherwise, the explosion damage efficiency does not meet the requirement.
For the reverse optimization design, if the designed warhead does not meet the penetration capability requirement, namely the penetration depth of the designed warhead is smaller than the design index (for example, the penetration depth is required to be not less than 6m at the minimum, and the actual penetration depth can only reach 5 m), the design parameters need to be re-optimized, and the coefficient and the length of the warhead are designed by changing the projectile body, or the material of the warhead is changed. And storing newly designed parameters of the warhead in a database folder through a text document, and then evaluating the penetration capability of the warhead again until the design meets the index requirement.
If the designed warhead does not meet the requirement of explosion damage capability, namely the maximum pressure of the designed warhead is smaller than the design index (for example, the maximum pressure at a certain position is not smaller than 8MPa, but can only reach 5MPa actually), the design parameters need to be optimized again, and the aim of improving the explosion power is achieved by changing the design length and diameter of the projectile body or changing the material of the warhead. And storing the newly designed warhead parameters in a database folder through a text document, then evaluating the penetration capability of the warhead again, checking whether the newly designed warhead meets the penetration capability, and then evaluating the explosion damage power until the design meets the index requirement.
Specifically, the target types include strength targets (single homogeneous media), layered targets (multiple media), multi-layer steel targets, and multi-layer story targets.
In this embodiment, the explosion damage module adopts an explosion power evaluation model to evaluate explosion damage, which specifically includes:
manually inputting calculation input parameters in an interface layer, or acquiring the calculation input parameters by calling the penetration capability evaluation result; the calculation input parameters comprise equivalent weight, ending time, maximum distance, explosion mode, atmospheric pressure, incident angle and destruction criterion;
according to the calculation input parameters, performing explosion damage evaluation calculation by adopting an explosion power evaluation model to obtain an explosion damage evaluation result; the explosion damage evaluation result comprises quantitative relations such as the change of pressure intensity of a specific position along with time, the distribution of incident pressure along with distance at a specific moment, the change relation of reflected overpressure along with distance, the impact speed, the relation of arrival time of shock waves and distance and the like.
In specific implementation, the implemented software is as follows:
1. an interface diagram of the design module of the explosive warhead is shown in fig. 4, wherein model parameters are obtained through calculation according to parameters of the warhead in fig. 4, and estimated parameters are obtained through calculation according to the model parameters.
In fig. 4, a top drop-down box is included, which provides a selection of a plurality of different bullet-shaped templates, whose geometry data is derived from a specific project and stored in a data layer by a parameterized model using a text file. The selection of simplified bullet types and virtual bullet types is realized at present, the drop-down frame data can be expanded at any time in order to meet the requirements, and the implementation flow of the embodiment is described by taking the simplified bullet types as an example.
After the selection of the bullet type is completed, the design parameters of the bullet type need to be input (different bullet types are selected, and the input parameters are slightly different), and in the simplified bullet type example, the required parameters include data such as diameter, length, mass, centroid position, tail end falling speed, target index (drop-down frame), penetration requirement, total loading capacity, equivalent TNT (trinitrotoluene) equivalent, and shock wave overpressure. Typically, in the course of project implementation, this portion of data is derived from the specific project requirements.
After the design parameters are input, clicking on the estimated model size will obtain the recommended model parameters (including overall length, radius, head coefficient, etc.) based on the existing experience, as shown in fig. 5. The bullet-type model may be saved under the model parameters and the associated data will be saved in a fixed text file format.
Then, through the bullet type preview, the right estimated parameters and the lower visual figure can be obtained, as shown in fig. 6.
The estimated parameters on the right side of fig. 6 are data such as total mass, bullet body mass, charging mass, adapter plate mass, head ultimate weight loss, centroid distance, rotational inertia, safety factor and penetration depth calculated by the existing formula, so that the forward design of parameters of the warhead is completed, the model can be stored, and the stored data is stored in a text file for calling the penetration damage module and the explosion damage module.
2. Penetration capability evaluation module
Data transmission is performed between the penetration capability evaluation module and the explosive warhead design module through stored projectile files, and the penetration capability evaluation module needs to enter from a main interface, as shown in fig. 7.
After entering the penetration capability evaluation module, the system pops up an interface shown in fig. 8. The interface comprises two pull-down boxes of algorithm selection and target selection, wherein the algorithm selection mainly selects different empirical formulas or differential algorithms for calculating and evaluating penetration capability, and three algorithms of a Young empirical formula, a Forrestal empirical formula and a differential surface element are realized at present; the target selection part is mainly used for selecting the designed warhead and what target function, and strength targets (single uniform media), layered targets (multiple media), multilayer steel targets and multilayer floor targets are realized at present. For convenience of description and illustration, the simplest Young's empirical formula and intensity target are described as examples in the following. In fig. 8, the bullet type parameter is a model parameter obtained by calling a preamble calculation, and the target parameter is a target parameter, i.e., a target to be hit.
FIG. 8 shows an exemplary penetration capability assessment interface, including projectile-type parameters, calculation parameters, and target parameters. The bullet type parameter data can be directly and manually input, and text files of bullet design parameters can be stored by calling the explosive warhead design module, so that the basic quality, diameter and head data parameters of the bullet can be obtained. The parameter calculation part is mainly used for setting the intersection condition of the projectile body and the target and mainly comprises parameters of the included angle between the target surface and the trajectory and the target landing speed of the projectile body. Target parameters are input during implementation and mainly comprise data such as thickness, width, steel bar containing percentage, compressive strength and the like (different targets are selected, input parameters are different, but programs pass the class design, the target parameter column is automatically matched with corresponding required parameter input frames according to different selected targets).
After all the input parameters are finished, the estimation button is clicked, and the penetration capability evaluation result can be displayed in a lower box through characters, as shown in fig. 9. This example shows that the warhead has penetrated the target and there is a remaining velocity of 473.322 m/s. The result of the penetration capability evaluation can be saved as a text file by clicking the saved result for subsequent calling. From this point, the penetration capability assessment is completed.
3. Explosion damage evaluation module
After the blast damage assessment module, the system interface is shown in fig. 10. The interface comprises calculation parameters which can be directly input manually or can be used for obtaining the calculation input parameters such as the equivalent explosion quantity and the like through a text file stored after the projectile body of the penetration capability evaluation module is called to act with the target.
After all the parameters required for calculation are obtained, the calculation is clicked to obtain the result shown in fig. 11. The right image contains quantitative relations such as the pressure change of a certain specific position along with time, the distribution of incident pressure along with distance at a certain specific moment, the relation of reflection overpressure along with distance change, the relation of impact velocity and the arrival time and distance of shock waves and the like. Meanwhile, two horizontal pull frames are arranged on the left side, so that different moments and distances can be adjusted, related quantized data can be displayed, and data are provided for digital evaluation.
Example 2
The difference between the present embodiment and embodiment 1 is that the present embodiment provides an explosive warhead design and damage evaluation method, which is applied to the explosive warhead design and damage evaluation system described in embodiment 1, and the method includes:
carrying out warhead parameter design, and storing the designed warhead parameters into a data layer;
acquiring a warhead parameter of a data layer through data calling, and performing penetration capability evaluation and explosion damage evaluation by adopting a forward design method according to the warhead parameter;
the forward design method comprises the following steps:
acquiring a warhead parameter of a data layer through data calling, and carrying out penetration capability evaluation by adopting a penetration capability evaluation model according to a preset bullet target action parameter and the warhead parameter to obtain penetration data; storing the penetration data to a data layer;
acquiring a warhead parameter and penetration data of a data layer through data calling, and performing explosion damage evaluation by adopting an explosion power evaluation model according to the warhead parameter and the penetration data to obtain explosion damage data; and storing the blast damage data to a data layer.
As a further implementation, the method further comprises:
acquiring a warhead parameter of a data layer through data calling, and performing penetration capability evaluation and explosion damage evaluation by adopting a reverse optimization design method according to the warhead parameter;
the reverse optimization design method comprises the following steps:
acquiring a warhead parameter of a data layer through data calling, and performing penetration capability evaluation by adopting a penetration capability evaluation model according to a preset target action parameter and the warhead parameter to obtain penetration data; comparing the penetration data with a first design target value, and evaluating whether penetration capacity meets requirements: if the penetration data is larger than the first design target value, the requirement is met, if the penetration data is not larger than the first design target value, the parameters of the warhead part of the design are optimized again until the design meets the index requirement; storing penetration data meeting the requirements to a data layer; wherein the penetration data is the penetration depth of the warhead;
acquiring a warhead parameter and penetration data of a data layer through data calling, and performing explosion damage evaluation by adopting an explosion power evaluation model according to the warhead parameter and the penetration data to obtain explosion damage data; comparing the explosion damage data with a second design target value, and evaluating whether the explosion damage capability meets the requirement: if the explosion damage data is larger than the second design target value, the requirement is met, if the explosion damage data is not met, the parameters of the warhead are optimized again until the design meets the index requirement; storing explosion damage data meeting the requirements to a data layer; wherein the blast damage data is the warhead maximum pressure.
As a further implementation, the warhead parameters include material parameters and geometric parameters;
the material parameters comprise material basic information such as material density, strength, sound velocity and the like;
the geometric parameters comprise parameter information such as the diameter, the length, the centroid position and the like of the projectile body;
the preset target shooting action parameters comprise target surface and trajectory included angles and target landing speeds;
the material parameters are stored in a data layer in a list database mode, basic parameters of the material parameters cannot be changed, and the material parameters can be called only through material names when an interface layer is used; for example: the information of the density, the strength, the sound velocity and the like of the 304 steel material is stored in a database of a data layer, the 304 steel material can be selected only through a pull-down frame in the use of an interface layer, and the material parameters cannot be changed.
The geometric parameters are stored in a database folder of the data layer in a standardized text file mode, the parameter information is a design variable, relevant design parameters can be modified in the interface layer according to requirements, and meanwhile relevant parameters are modified in the database folder.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The system is characterized in that the system is developed and designed on a software framework which comprises a data layer, a functional layer and an interface layer from bottom to top; the system comprises an explosive warhead design module, a penetration capability evaluation module and an explosion damage module;
the blast warhead design module is used for designing parameters of a warhead and storing the designed parameters of the warhead into a data layer;
the penetration capability evaluation module is used for obtaining the warhead parameters of the data layer through data calling, and carrying out penetration capability evaluation by adopting a penetration capability evaluation model according to the preset target action parameters and the warhead parameters to obtain penetration data; storing the penetration data to a data layer;
the explosion damage module is used for obtaining the parameters of a warhead part and penetration data of a data layer through data calling, and carrying out explosion damage evaluation by adopting an explosion power evaluation model according to the parameters of the warhead part and the penetration data to obtain explosion damage data; storing the explosion damage data to a data layer;
the penetration capability evaluation module adopts a penetration capability evaluation model to evaluate penetration capability, and specifically comprises the following steps:
selecting a penetration capability evaluation model and a target type in an interface layer in a pull-down frame mode, and carrying out different types of penetration capability evaluation according to the selected penetration capability evaluation model and the selected target type to obtain a penetration capability evaluation result; storing the penetration capability evaluation result to a data layer by a text file; wherein:
the penetration capability evaluation model comprises a Young empirical formula, a Forrestal empirical formula and a differential surface element;
the target types comprise strength targets, layered targets, multi-layer steel targets and multi-layer floor targets;
the expression of the Young's empirical formula is as follows:
in the formula: d is the penetration depth of the warhead; s is a dimensionless penetration resistance coefficient; n is a head coefficient; m is the mass of the projectile body; a is the sectional area of the elastomer; v is penetration speed.
2. The blast warhead design and damage assessment system of claim 1, wherein said warhead parameters comprise material parameters and geometric parameters;
the material parameters include material density, strength, and speed of sound;
the geometric parameters comprise projectile body diameter, length and centroid position;
the preset target playing parameters comprise the included angle between the target surface and the trajectory and the target landing speed of the projectile body.
3. The blast warhead design and damage assessment system according to claim 2, wherein the material parameters are stored in the data layer by means of a tabular database, and the basic parameters of the data layer are not changeable and are called by material names when the interface layer is used;
the geometric parameters are stored in a database folder of the data layer in a standardized text file mode, the parameter information is a design variable, relevant design parameters are modified in the interface layer according to requirements, and meanwhile relevant parameters are modified in the database folder.
4. The blast warhead design and damage assessment system of claim 1, further comprising:
the penetration capability evaluation module is also used for comparing the penetration data with a first design target value and evaluating whether the penetration capability meets the requirement: if the penetration data is larger than the first design target value, the requirement is met, if the penetration data is not larger than the first design target value, the parameters of the warhead part of the design are optimized again until the design meets the index requirement; and storing penetration data meeting the requirements to a data layer; wherein the penetration data is the penetration depth of the warhead;
the explosion damage module is further configured to compare the explosion damage data with a second design target value, and evaluate whether the explosion damage capability meets the requirement: if the explosion damage data is larger than the second design target value, the requirement is met, if the explosion damage data is not met, the parameters of the warhead are optimized again until the design meets the index requirement; storing explosion damage data meeting the requirements to a data layer; wherein the blast damage data is the warhead maximum pressure.
5. The system of claim 1, wherein the blast damage module employs an explosion power evaluation model for blast damage evaluation, and comprises:
manually inputting calculation input parameters in an interface layer, or acquiring the calculation input parameters by calling the penetration capability evaluation result; the calculation input parameters comprise equivalent weight, ending time, maximum distance, explosion mode, atmospheric pressure, incident angle and destruction criterion;
according to the calculation input parameters, performing explosion damage evaluation calculation by adopting an explosion power evaluation model to obtain an explosion damage evaluation result; the explosion damage evaluation result comprises the pressure intensity change along with time at a certain set position, the distribution of the incident pressure along with distance at a certain set moment, the relation of the change of the reflection overpressure along with distance, and the relation of the impact speed and the arrival time and the distance of the shock wave.
6. A blast warhead design and damage evaluation method applied to a blast warhead design and damage evaluation system according to any one of claims 1 to 5, the method comprising:
carrying out the design of parameters of the warhead, and storing the designed parameters of the warhead in a data layer;
acquiring a warhead parameter of a data layer through data calling, and performing penetration capability evaluation and explosion damage evaluation by adopting a forward design method according to the warhead parameter;
the forward design method comprises the following steps:
acquiring a warhead parameter of a data layer through data calling, and performing penetration capability evaluation by adopting a penetration capability evaluation model according to a preset target action parameter and the warhead parameter to obtain penetration data; storing the penetration data to a data layer;
acquiring a warhead parameter and penetration data of a data layer through data calling, and performing explosion damage evaluation by adopting an explosion power evaluation model according to the warhead parameter and the penetration data to obtain explosion damage data; and storing the blast damage data to a data layer.
7. The method of claim 6, further comprising:
acquiring a warhead parameter of a data layer through data calling, and performing penetration capability evaluation and explosion damage evaluation by adopting a reverse optimization design method according to the warhead parameter;
the reverse optimization design method comprises the following steps:
acquiring a warhead parameter of a data layer through data calling, and carrying out penetration capability evaluation by adopting a penetration capability evaluation model according to a preset bullet target action parameter and the warhead parameter to obtain penetration data; comparing the penetration data with a first design target value, and evaluating whether penetration capacity meets requirements: if the penetration data is larger than the first design target value, the requirement is met, if the penetration data is not larger than the first design target value, the parameters of the warhead part of the design are optimized again until the design meets the index requirement; storing penetration data meeting the requirements to a data layer;
acquiring the parameters of a warhead part and penetration data of a data layer through data calling, and performing explosion damage evaluation by adopting an explosion power evaluation model according to the parameters of the warhead part and the penetration data to obtain explosion damage data; comparing the explosion damage data with a second design target value, and evaluating whether the explosion damage capability meets the requirement: if the explosion damage data is larger than the second design target value, the requirement is met, if the explosion damage data is not met, the parameters of the warhead are optimized again until the design meets the index requirement; and storing the explosion damage data meeting the requirements to a data layer.
8. The method of claim 6, wherein the warhead parameters include material parameters and geometric parameters;
the material parameters include material density, strength, and speed of sound;
the geometric parameters comprise projectile body diameter, length and centroid position;
the preset target shooting action parameters comprise target surface and trajectory included angles and target landing speeds;
the material parameters are stored in a data layer in a list database mode, basic parameters of the material parameters cannot be changed, and the material parameters are called by material names when the interface layer is used;
the geometric parameters are stored in a database folder of the data layer in a standardized text file mode, the parameter information is a design variable, relevant design parameters are modified in the interface layer according to requirements, and meanwhile relevant parameters are modified in the database folder.
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| CN110119580A (en) * | 2019-05-17 | 2019-08-13 | 中国人民解放军军事科学院国防工程研究院 | A kind of ground surface works target Damage assessment system and method |
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