CN105653772B - An automatic modeling method and system for numerical simulation of PBX explosive granule compression molding - Google Patents
An automatic modeling method and system for numerical simulation of PBX explosive granule compression molding Download PDFInfo
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- 239000002360 explosive Substances 0.000 title claims abstract description 138
- 239000008187 granular material Substances 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000004088 simulation Methods 0.000 title claims abstract description 43
- 238000000748 compression moulding Methods 0.000 title claims abstract description 29
- 238000005422 blasting Methods 0.000 claims abstract description 85
- 238000012545 processing Methods 0.000 claims abstract description 37
- 238000013515 script Methods 0.000 claims abstract description 26
- 239000002245 particle Substances 0.000 claims description 18
- 238000004422 calculation algorithm Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 230000008901 benefit Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000010008 shearing Methods 0.000 claims description 3
- 238000003709 image segmentation Methods 0.000 claims description 2
- 241000208340 Araliaceae Species 0.000 claims 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
- 235000008434 ginseng Nutrition 0.000 claims 1
- 238000004064 recycling Methods 0.000 claims 1
- 230000008569 process Effects 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000003708 edge detection Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012800 visualization Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000547 structure data Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/36—Circuit design at the analogue level
- G06F30/367—Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30108—Industrial image inspection
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Abstract
The invention discloses a kind of PBX blasting explosive granules compression moulding numerical simulation automation modeling method and system, belong to PBX blasting explosive granules compression moulding method for numerical simulation.According to PBX explosive microphoto, true PBX explosive microscopical structure is obtained, analog parameter is inputted by data processing module, carries out modeling processing by model processing modules, the analog parameter that user inputs in combined data processing module obtains computation model；Modeling result is converted into numerical simulation software script language code by script file generation module, exports as script file, realization PBX blasting explosive granules compression moulding numerical simulation automation modeling.Using the automation modeling method, it can use good user interface as user and a kind of more convenient way of modeling be provided, be easy to upper hand；It is automatically performed the output of numerical simulation software language scripts, saves as the file that can be directly run by numerical simulation software；Improve modeling work efficiency and Models computed accuracy rate.
Description
Technical field
The present invention relates to a kind of mobile method for numerical simulation of blasting explosive granules compression moulding, especially a kind of blasting explosive granules compacting
Form the automation modeling of numerical simulator.
Background technique
Plastic binded (Plastic-bonded explosives, abbreviation PBX) be it is a kind of by high explosive crystal,
The mixture of the Multiple components such as bonding agent composition can be made type by the forming methods such as casting or suppressing, be to prepare explosive element
One of main method.It can be calculated using various blasting explosive granules compacting numerical simulation software (such as NairnMPM, Uintah)
The variation of explosive each section mechanical parameter, obtains numerical value physical image during compression moulding, analyzes and carefully sees in explosive pressing process
Mechanical behavior, can for explosive compression moulding technique and improve explosive element quality theoretical foundation be provided.
In the research of the model of explosive compression moulding at this stage, the Chen Lang etc. of Beijing Institute of Technology establishes the free heap of blasting explosive granules
Product computation model takes random distribution mode to blasting explosive granules size and position.And this model and true blasting explosive granules
State has certain error, and comprehensive, efficient, accurate simulation cannot be carried out to explosive compression moulding and is calculated.
In addition, explosive compression moulding numerical simulation software general at present, (such as NairnMPM) is that utility command drives
The dynamic rather than calculation procedure of menu-drive, this just determine it had the drawback that in modeling process (1) introduction difficulty compared with
Height, not easy to get started, man-machine interface is unfriendly；(2) complicated for operation, interactive change can not be realized in time；(3) it needs to do a large amount of complicated
Work and order input, it is time-consuming and laborious；(4) artificial modeling easily malfunctions with input.These are all virtually increasing user
The difficulty of numerical simulation is carried out using software.
Summary of the invention
Insufficient in terms of modeling for explosive compression moulding numerical simulation software, the present invention provides a kind of explosives to be pressed into
The automation modeling method and system of type numerical simulator.
Explosive compression moulding numerical simulation automation modeling method is by being finely divided modeling task, and specific to mould
Block calls disparate modules according to the step of modeling, realizes that the automation of explosive compression moulding model is established, the technical solution of use
It is as follows:
A kind of PBX blasting explosive granules compression moulding numerical simulation automation modeling method, comprising the following steps:
Step 1 obtains true PBX explosive microscopical structure according to PBX explosive microphoto, obtains initial data, makees
It is inputted for analog parameter, the initial data includes blasting explosive granules quantity, blasting explosive granules thickness and its mechanical property.
Initial data obtained by step 1 is carried out modeling processing by step 2, is obtained blasting explosive granules and is suppressed model, the explosive
It includes blasting explosive granules computation model and blasting explosive granules mechanical model that particle, which suppresses model,.
Step 3 saves blasting explosive granules obtained by step 2 and suppresses model.
Step 4 generates numerical simulation software language scripts code according to the compacting model of blasting explosive granules obtained by step 2, and
Generate output file.
Specifically, blasting explosive granules central coordinate of circle under blasting explosive granules computation model, including rectangular coordinate system described in step 2,
Partial size length, rigid pressurized face and mold coordinate computation.
Further, blasting explosive granules mechanical model described in step 2, including following three classes data:
The material model selection of A blasting explosive granules, bulk modulus, modulus of shearing, Poisson's ratio, density, coefficient of friction, surrender
Power.
The selection of the material model of B rigid pressurized face and mold and the pressurized plane direction of motion and initial velocity.
Permitted boundary displacement state in the stress value and numerical simulation of C original state drag boundary.
In specific embodiments of the present invention, file described in step 5 is the scripting language text that numerical simulation software can be performed
Part.
A kind of PBX blasting explosive granules compression moulding numerical simulation automatic Building modular system, including at data processing module, model
Manage module and script file generation module；Wherein
The data processing module obtains true PBX explosive microscopical structure according to PBX explosive microphoto, obtains former
Beginning data carry out the input of the data of analog parameter as analog parameter, and to the explosive that model processing modules are handled
Grain compacting model is saved, and the initial data includes blasting explosive granules quantity, blasting explosive granules thickness and its mechanical property.
The model processing modules carry out modeling operation to the analog parameter that data processing module obtains, and obtain blasting explosive granules
Suppress model；Be approximately including blasting explosive granules coordinate point processing, partial size length operation and rigid pressurized face after spheroidal particle and
Three submodules of mold coordinate computation.
The script file generation module suppresses model according to blasting explosive granules and generates scripted code, and exports, including model
Frame output, the output of mechanical property assignment, boundary condition and initialization three submodules of output.
It advantages of the present invention and has the beneficial effect that:
The utility model has the advantages that as the above scheme is adopted, according to PBX explosive microphoto, obtaining true PBX explosive and carefully seeing
Structure, inputs analog parameter data by data processing module, modeling processing is carried out by model processing modules, at combined data
The analog parameter of user's input obtains computation model in reason module；Modeling result is converted into numerical value by script file generation module
Simulation softward script language code exports as script file, to realize that PBX blasting explosive granules compression moulding numerical simulation automates
Modeling.The mechanism for carrying out automation modeling to model is analyzed, the automation modeling method based on explosive compacting model is constructed, has
Input, output, automation calculating, the export of model data can be soft in blasting explosive granules compacting numerical simulation with internal logic
The functions such as execution script file in part, to realize quick, the accurate foundation of PBX blasting explosive granules compacting model.Blasting explosive granules
Compacting numerical simulation automation modeling method by by modeling process task and step be finely divided, pass through good user
Interface can make modeling work be easy to upper hand；It is automatic to count using the approximate algorithm of spheroidal particle according to true explosive microscopical structure
Data needed for calculating the computation models such as coordinate and the partial size of PBX blasting explosive granules；The output of numerical simulation software language is finally completed, and
Save as the script file that can be performed.Therefore, explosive compacting numerical simulation automation modeling method can save a large amount of modeling works
It measures, improve working efficiency, while also improving the accuracy rate of Models computed.
Advantage: it is mainly PBX explosive compression moulding numerical simulation that blasting explosive granules, which suppress numerical simulation automation modeling method,
Modeling and design, compared to other automation modeling methods, the demand of PBX compression moulding simulation can have been better met,
The transplanting of platform is more preferable, can make it that can still operate normally in the case where leaving Java operating environment.And in modeling method,
Relative to the random distribution modeling method of blasting explosive granules size and position more common in compacting numerical simulation, automation modeling side
The closer practical PBX explosive microscopical structure of the model that method is established.Analog parameter and automatic calculating PBX explosive are inputted by interface
The method of the coordinate and partial size of particle makes the extensive work in blasting explosive granules compacting simulation model establishment process by corresponding module
It completes, can greatly simplify the difficulty of modeling, while improving the accuracy and speed of modeling.
Good user interface makes modeling work be easy to upper hand；It is automatically performed the output of numerical simulation software language, and is saved
For the script file that can be called；Modeling work efficiency and Models computed accuracy rate can be improved.
Detailed description of the invention
Fig. 1 is PBX blasting explosive granules compression moulding numerical simulation automation modeling method flow diagram；
Fig. 2 is the function structure chart of PBX blasting explosive granules compression moulding numerical simulation automation modeling method；
Comparison diagram before and after Fig. 3 PBX blasting explosive granules model application particle spherical shape approximation method of the present invention；
Fig. 4 is to obtain PBX particle compacting computation model specific steps flow chart.
Specific embodiment
One embodiment of the present of invention is further described with reference to the accompanying drawing:
Embodiment 1: such as Fig. 2, explosive compression moulding numerical simulation automation modeling method is by carrying out carefully modeling task
Point, and specific to module, disparate modules are called according to the step of modeling, realize that the automation of explosive compression moulding model is established；
Including three modules, it is respectively as follows: module one, data processing module；Module two, model processing modules；And module three, script file
Generation module.
There are user interface, software interface, data to save three submodules, simulated for module one, data processing module
The input of the data of parameter and the preservation work of model result, and easily operated user interface is provided.
Module two, model processing modules are with the coordinate point processing after blasting explosive granules spheroidal particle approximation, partial size length fortune
It calculates and three submodules in rigid pressurized face and mold coordinate computation, the initial data inputted to user carries out modeling processing, obtain
Modeling result.
Module three, script file generation module have model framework output, mechanical property assignment output, boundary condition and just
Beginningization exports three submodules, converts the executable script language of blasting explosive granules compression moulding numerical simulation software for modeling result
Say code, and exporting is file.
Steps are as follows for specific method:
Step 1 obtains true PBX explosive microscopical structure according to PBX explosive microphoto, inputs mould by module one
Initial data needed for quasi-, the initial data includes blasting explosive granules quantity, thickness and its mechanical property；
Initial data obtained by step 1 is carried out modeling processing by module two, obtains blasting explosive granules model, institute by step 2
Stating blasting explosive granules compacting model includes explosive computation model and explosive mechanical model；
Step 3 saves blasting explosive granules model obtained by step 2 by module one；
Blasting explosive granules model obtained by step 2 is converted by module three, obtains numerical simulation software foot by step 4
This language codes；Numerical simulation software script language code refers to the order driving language in used numerical simulation software,
The operation instructions that numerical simulation software used can be led to obtain the simulation softward script language code, same blasting explosive granules
Model is to be indicated in different numerical simulation softwares using different script language codes.The same number for using object particle method
The scripting language that module is established in value simulation softward NairnMPM and numerical simulation software Uintah is just different.
Step 5 exports script language code obtained by step 4 for file by module three.
Blasting explosive granules central coordinate of circle under blasting explosive granules computation model, including rectangular coordinate system described in the step two,
Partial size length, rigid pressurized face and mold coordinate computation.
Blasting explosive granules mechanical model described in the step two, including following three classes data:
The material model selection of A blasting explosive granules, bulk modulus, modulus of shearing, Poisson's ratio, density, coefficient of friction, surrender
Power.
The selection of the material model of B rigid pressurized face and mold and the pressurized plane direction of motion and initial velocity.
Permitted boundary displacement state in the stress value and numerical simulation of C original state drag boundary.
File described in the step five is the script file that Computer Numerical Simulation software can be performed.
According to above-mentioned method, the specific steps are as follows:
Explosive is suppressed using various numerical simulation softwares (such as object particle method software NairnMPM) in explosive pharmaceutical engineering
Model carries out numerical simulation.But numerical simulation software needs to do when manually building blasting explosive granules model a large amount of complicated work,
It is time-consuming and laborious such as to blasting explosive granules thickness, coordinate, property, primary stress, the manual calculations of boundary stress and assignment, easily
Error.Java Swing is that one kind can incite somebody to action in its programing system in cross-platform visualization, the development language of object-oriented
Code and data are integrated into an independent object, and a large amount of work is completed by corresponding object.
Numerical simulation automation modeling method is suppressed using PBX blasting explosive granules, is developed based on Java Swing, each module
Constructed wetlands are as follows:
(1) data processing module: label, text box, check box, order button etc. can be made full use of to control in Java Swing
Part keeps input interface clear, reduces user and inputs the workload of initial data, and avoids various faulty operations, fried for PBX
The correct resolving that medicine particle suppresses computation model provides data basis.After user inputs analog parameter, data processing module can be certainly
It is dynamic to save data, and interface is provided and provides model parameter to model processing modules.
(2) model processing modules: being custom variable group by Material Definitions such as blasting explosive granules in Java Swing
Position is defined as custom variable group Body by Material, and using required various types of analog parameters as its inhomogeneity
The attribute value of type.After typing initial data, data are assigned to corresponding mechanical property set of variables attribute first by program, are fried
Medicine mechanical model.It is first passed through headed by the coordinate point processing and partial size operation thinking of blasting explosive granules spheroidal particle approximate algorithm true
Explosive microphoto obtains true PBX explosive microscopical structure figure.Image grayscale processing is carried out to explosive microscopical structure figure again,
Explosive microscopical structure figure for handling is RGB color image, using tri- component maximum values of color image R, G, B as grayscale image
The gray value of picture:
F (i, j)=max (R (i, j), G (i, j), B (i, j))
Wherein f (i, j) indicates that gray value of the gray level image at (i, j), R (i, j), G (i, j), B (i, j) respectively indicate
Image tri- component values of R, G, B at (i, j).Obtained gray level image is subjected to binary conversion treatment, completes the pre- place of image
Reason process.
Then the edge extracting of two value object of PBX explosive is found among the edge extracted using Sobel algorithm
Complete closure space.Sobel edge detection algorithm (Sobel edge delection operator) is using one 3
Discrete difference between the row and column of × 3 neighborhoods completes the calculating of pixel gradient.In order to provide smooth effect, first added
Then weight average is differentiated.Calculation expression is as follows:
Wherein gxAnd gyThe gray value of image through transverse direction and longitudinal direction edge detection is represented, z indicates the gray scale in image domains
Value.Finally seek maximum inscribed circle in closed region, in closed area in pixel and image border profile on picture
The maximum pixel of vegetarian refreshments distance value is exactly the center of circle of maximum inscribed circle, and the method for reusing image segmentation closes each
The maximum inscribed circle part that region has obtained is removed, and new closed area is formed, and it is approximate to continue with blasting explosive granules spheroidal particle
Algorithm continues to seek maximum inscribed circle in new enclosure space, until the enclosure space obtained is less than threshold；It then successively will note
The central coordinate of circle point and radius of the inscribed circle of record are found out, such as comparison before and after the spherical approximation method of Fig. 3 explosive particle application.Then again
By defining rigid pressurized face and mold coordinate points, show that PBX particle suppresses computation model, obtain the compacting of PBX particle and calculate mould
Type, specific steps such as Fig. 4.
(3) it script file generation module: opens, create or be written using the method that the File class API in Java is provided
File.The file output of NairnMPM software scripts is divided into three file header, trunk, end-of-file parts.File header is script text
Part format, coding statement and the statement of parameter；Trunk portion is parameter definition needed for simulation, such as simulated time, simulation lattice
Divide data, the definition of PBX blasting explosive granules mechanical property and position distribution data；End-of-file is end of file label.
Therefore, this automation modeling method, visual parameter input interface solve man-machine boundary in artificial modeling process
Face is unfriendly, complicated for operation, can not timely parameter change and parameter the problem of can not verifying；It is submitted by visualization interface
True blasting explosive granules microphoto, can calculate the location information and shape information of blasting explosive granules automatically, improve modeling
Accuracy and speed, substantially reduce simulation error；Executable script file is established automatically and is saved, and is saved a large amount of complicated
Work and order input.The above function makes simulation be more easier upper hand, can greatly simplify the difficulty of modeling, simultaneously
The accuracy and speed for improving modeling, to achieve the purpose that automation modeling.
Claims (5)
1. a kind of PBX blasting explosive granules compression moulding numerical simulation automation modeling method, it is characterised in that: the following steps are included:
Step 1 carries out image grayscale processing to explosive microscopical structure figure according to PBX explosive microphoto, by gray level image into
Row binary conversion treatment recycles Sobel algorithm to extract the edge of two value object of PBX explosive, at the edge extracted
Among find complete closure space, finally seek maximum inscribed circle in closed region, the pixel in closed area
It is exactly the center of circle of maximum inscribed circle with the maximum pixel of pixel distance value on the profile of image border, recycling image point
The method cut removes the maximum inscribed circle part that each closed area has obtained, and forms new closed area, continues with
Blasting explosive granules spheroidal particle approximate algorithm continues to seek maximum inscribed circle in new enclosure space, until the enclosure space obtained is small
In threshold value, true PBX explosive microscopical structure is obtained, obtains initial data, is inputted as analog parameter, the raw data packets
Include blasting explosive granules quantity, blasting explosive granules thickness and its mechanical property；
Initial data obtained by step 1 is carried out modeling processing by step 2, is obtained blasting explosive granules and is suppressed model, the blasting explosive granules
Suppressing model includes blasting explosive granules computation model and blasting explosive granules mechanical model；
Step 3 saves blasting explosive granules obtained by step 2 and suppresses model；
Step 4 generates numerical simulation software language scripts code according to the compacting model of blasting explosive granules obtained by step 2, and generates
Output file.
2. a kind of PBX blasting explosive granules compression moulding numerical simulation automation modeling method, feature exist according to claim 1
In: blasting explosive granules central coordinate of circle under blasting explosive granules computation model, including rectangular coordinate system described in step 2, partial size length, just
Property pressurized plane and mold coordinate computation.
3. a kind of PBX blasting explosive granules compression moulding numerical simulation automation modeling method, feature exist according to claim 1
In: blasting explosive granules mechanical model described in step 2, including following three classes data:
The material model selection of A blasting explosive granules, bulk modulus, modulus of shearing, Poisson's ratio, density, coefficient of friction, yield force；
The selection of the material model of B rigid pressurized face and mold and the pressurized plane direction of motion and initial velocity；
Permitted boundary displacement state in the stress value and numerical simulation of C original state drag boundary.
4. a kind of PBX blasting explosive granules compression moulding numerical simulation automation modeling method, feature exist according to claim 1
In: file described in step 4 is the script language files that numerical simulation software can be performed.
5. a kind of PBX blasting explosive granules compression moulding numerical simulation automatic Building modular system, it is characterised in that: including data processing mould
Block, model processing modules and script file generation module；Wherein
The data processing module carries out image grayscale processing according to PBX explosive microphoto, to explosive microscopical structure figure, will be grey
It spends image and carries out binary conversion treatment, recycle Sobel algorithm to extract the edge of two value object of PBX explosive, extracted
Complete closure space is found among edge out, finally maximum inscribed circle is sought in closed region, in closed area
Pixel and image border profile on the maximum pixel of pixel distance value be exactly maximum inscribed circle the center of circle, repeat benefit
The maximum inscribed circle part that each closed area has obtained is removed with the method for image segmentation, forms new closed area,
It continues with blasting explosive granules spheroidal particle approximate algorithm to continue to seek maximum inscribed circle in new enclosure space, until the envelope obtained
Space is closed less than threshold value, obtains true PBX explosive microscopical structure, initial data is obtained as analog parameter, carries out simulation ginseng
The input of several data, and the blasting explosive granules compacting model that model processing modules are handled is saved, the original number
According to including blasting explosive granules quantity, blasting explosive granules thickness and its mechanical property；
The model processing modules carry out modeling operation to the analog parameter that data processing module obtains, and obtain blasting explosive granules compacting
Model；It is approximately coordinate point processing, partial size length operation and the rigid pressurized face after spheroidal particle and mold including blasting explosive granules
Three submodules of coordinate computation；
The script file generation module suppresses model according to blasting explosive granules and generates scripted code, and exports, including model framework
Output, the output of mechanical property assignment, boundary condition and initialization three submodules of output.
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| CN106503404B (en) * | 2016-11-29 | 2019-09-10 | 重庆邮电大学 | A kind of PBX blasting explosive granules particle Random Discrete fill method |
| CN108733870A (en) * | 2018-03-28 | 2018-11-02 | 西安近代化学研究所 | A kind of blasting explosive granules meso-mechanical model stochastic modeling method |
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