CN110427694A - Explosive falls Safety Analysis Method and device - Google Patents
Explosive falls Safety Analysis Method and device Download PDFInfo
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- 239000002360 explosive Substances 0.000 title claims abstract description 189
- 238000004458 analytical method Methods 0.000 title claims abstract description 65
- 238000004088 simulation Methods 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000010586 diagram Methods 0.000 claims description 31
- 238000004590 computer program Methods 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 6
- 230000001052 transient effect Effects 0.000 claims description 3
- 230000036544 posture Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 description 17
- 238000004364 calculation method Methods 0.000 description 7
- 238000004880 explosion Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
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- 230000001133 acceleration Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
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- 230000008859 change Effects 0.000 description 2
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- 230000001351 cycling effect Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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- 238000012805 post-processing Methods 0.000 description 1
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Abstract
The embodiment of the present invention provides a kind of explosive and falls Safety Analysis Method and device, which comprises carries out three-dimensional modeling to hemispherical Explosive Parts using modeling software SolidWorks；The model drawn in modeling software SolidWorks is introduced directly into the interface of finite element analysis software ANSYS Workbench by association, and carries out the addition and grid dividing of material properties；It chooses three kinds of typical cases and falls operating condition, row bound condition setting of going forward side by side emulates the falling for hemispherical Explosive Parts using the display dynamics module Explicit Dynamic in ANSYS Workbench；Safety analysis is carried out to the hemispherical Explosive Parts according to simulation result.The embodiment of the present invention can safely, effectively obtain the safety analysis conclusion of Explosive Parts by emulating to Explosive Parts in the case where three kinds of typical postures fall situation.
Description
Technical field
The present invention relates to weapon use with safeguards technique field, fall safety analysis more particularly, to a kind of explosive
Method and device.
Background technique
Hemispherical Explosive Parts are made of HMX base PBX, the Explosive Parts in use, exist surprisingly fall can
Energy.In the case that hemispherical Explosive Parts are surprisingly fallen, safety, structural intergrity and the measure value for preventing structure from destroying
It must pay close attention to and study.
Is done for the mechanical property of HMX base PBX by many researchs for the country.The equity static pressure such as Wen Maoping, Pang Haiyan and molding
The mechanical property of HMX base PBX explosive compares research, has obtained the mechanical property of the explosive of two kinds of technique, medium quiet
Compressive strength of the explosive being pressed at 20 DEG C is 48.23MPa；Yan Xilin, Zhouyang etc. under the conditions of 5MPa axial compression stress,
Temperature cycling test has been carried out to HMX base PBX explosive, has obtained the changing rule of explosive mechanical property.For Explosive Parts
Correlative study has also been made in the country in terms of safety.What Wang Chen, Chen Lang had carried out JO-9159 and PBXCO3 explosive falls number of responses
It is worth sunykatuib analysis, the detonation of both explosives, igniting, broken three kinds of response conditions is studied；Xie Tao, Lv Hongchao are used
LS-DYNA is dropped into different height and angle conditions drop to certain air-to-air missile and has been gone simulation analysis, has obtained falling for guided missile
Safety Conclusions.
Although HMX base PBX safety is higher, chemical reaction threshold value up to 1.4GPa, ignition threshold value up to 2.5GPa,
It is that its structural strength is not high, impact resistance is not strong.The research emphasis that explosive falls in the country ties it mostly in safety
The research of structure integrality aspect is less.Since the fall-down test time is short, risk is higher, and the reasons such as experimentation cost height utilize reality
It is larger that object explosive carries out drop test development difficulty.
Summary of the invention
The embodiment of the present invention provides a kind of explosive for overcoming the above problem or at least being partially solved the above problem and falls
Safety Analysis Method and device.
In a first aspect, the embodiment of the present invention, which provides a kind of explosive, falls Safety Analysis Method, comprising:
Three-dimensional modeling is carried out to hemispherical Explosive Parts using modeling software SolidWorks；
The model drawn in modeling software SolidWorks is introduced directly into finite element analysis software ANSYS by association
The interface of Workbench, and carry out the addition and grid dividing of material properties；
It chooses three kinds of typical cases and falls operating condition, row bound condition setting of going forward side by side is dynamic using the display in ANSYS Workbench
Mechanics module Explicit Dynamic emulates the falling for hemispherical Explosive Parts；
Safety analysis is carried out to the hemispherical Explosive Parts according to simulation result.
Wherein, three kinds of typical cases fall operating condition include: Explosive Parts small end land fall, Explosive Parts big end lands and falls
It falls to land with Explosive Parts side and fall.
Wherein, it is described using modeling software SolidWorks to hemispherical Explosive Parts carry out three-dimensional modeling the step of it
Before, further includes:
Using the associated tool ANSYS CAD Configuration Manager of ANSYS to SolidWorks and ANSYS
Workbench is associated.
Wherein, described the step of safety analysis is carried out to the hemispherical Explosive Parts according to simulation result, specifically:
Three kinds of typical cases are obtained based on simulation result and fall stress distribution cloud atlas and stress diagrams under operating condition, are utilized
Three kinds of typical cases fall stress distribution cloud atlas and stress diagrams under operating condition, fall condition to the hemispherical Explosive Parts
Under safety analyzed；
Structure under operating condition is fallen to three kinds of typical cases described in the hemispherical Explosive Parts using Mohr-Coulomb criterion
Intensity is analyzed and determined.
Second aspect, the embodiment of the present invention provide a kind of explosive and fall safety analysis device, comprising:
Modeling module, for carrying out three-dimensional modeling to hemispherical Explosive Parts using modeling software SolidWorks；
Import modul, for the model drawn in modeling software SolidWorks to be introduced directly into finite element by association
The interface of analysis software ANSYS Workbench, and carry out the addition and grid dividing of material properties；
Emulation module falls operating condition for choosing three kinds of typical cases, and row bound condition setting of going forward side by side utilizes ANSYS
Display dynamics module Explicit Dynamic in Workbench imitates the falling for hemispherical Explosive Parts
Very；
Analysis module, for carrying out safety analysis to the hemispherical Explosive Parts according to simulation result.
Wherein, three kinds of typical cases fall operating condition include: Explosive Parts small end land fall, Explosive Parts big end lands and falls
It falls to land with Explosive Parts side and fall.
Wherein, further includes:
Relating module, for the associated tool ANSYS CAD Configuration Manager couple using ANSYS
SolidWorks is associated with ANSYS Workbench.
Wherein, the analysis module is specifically used for:
Three kinds of typical cases are obtained based on simulation result and fall stress distribution cloud atlas and stress diagrams under operating condition, are utilized
Three kinds of typical cases fall stress distribution cloud atlas and stress diagrams under operating condition, fall condition to the hemispherical Explosive Parts
Under safety analyzed；
Structure under operating condition is fallen to three kinds of typical cases described in the hemispherical Explosive Parts using Mohr-Coulomb criterion
Intensity is analyzed and determined.
The third aspect, the embodiment of the present invention provides a kind of electronic equipment, including memory, processor and is stored in memory
Computer program that is upper and can running on a processor, is realized when the processor executes described program as first aspect provides
Explosive the step of falling Safety Analysis Method.
Fourth aspect, the embodiment of the present invention provide a kind of non-transient computer readable storage medium, are stored thereon with calculating
Machine program realizes that the explosive as provided by first aspect falls Safety Analysis Method when the computer program is executed by processor
The step of.
Explosive provided in an embodiment of the present invention falls Safety Analysis Method and device, by Explosive Parts in three kinds of allusion quotations
Type posture is fallen to be emulated under situation, is analyzed using simulation result the safety of Explosive Parts and structural intergrity,
Experimentation cost is low, can safely, effectively obtain the safety analysis conclusion of Explosive Parts.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the flow diagram that explosive provided in an embodiment of the present invention falls Safety Analysis Method；
Fig. 2 is that the embodiment of the present invention is shown using the 3D structure that SolidWorks carries out three-dimensional modeling to hemispherical Explosive Parts
It is intended to；
Fig. 3 is stress distribution cloud atlas when Explosive Parts small end provided in an embodiment of the present invention lands；
Fig. 4 is stress diagrams when Explosive Parts small end provided in an embodiment of the present invention lands；
Fig. 5 is stress distribution cloud atlas when Explosive Parts big end provided in an embodiment of the present invention lands；
Fig. 6 is stress diagrams when Explosive Parts big end provided in an embodiment of the present invention lands；
Fig. 7 is stress distribution cloud atlas when Explosive Parts side provided in an embodiment of the present invention lands；
Fig. 8 is stress diagrams when Explosive Parts side provided in an embodiment of the present invention lands；
Fig. 9 is that three kinds of typical cases provided in an embodiment of the present invention fall stress curve of the posture under Mohr-Coulomb criterion
Figure；
Figure 10 is the structural schematic diagram that explosive provided in an embodiment of the present invention falls safety analysis device；
Figure 11 is the entity structure schematic diagram of electronic equipment provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Before introducing explosive provided in an embodiment of the present invention and falling Safety Analysis Method and device, fallen first
Theory is introduced.
Dropping shock principle:
Assuming that something weight is m, and from height to do the movement of falling object from h, in the case where disregarding air drag, root
According to law of conservation of energyMomentary rate of the object before landing, which can be acquired, isContiguously from object
Face starts, the effect due to object by the power on ground, and speed starts to reduce until 0, it is assumed that this process time experienced is
t.Smaller according to momentum theorem time t, the average momentum that object is subject to is bigger, therefore the extent of the destruction of object is also bigger.When
Between t influenced by the rigidity (elasticity modulus, Poisson's ratio) of object, the bigger t of the rigidity of object is smaller.
Explicit Dynamics principle:
Display dynamics module Explicit Dynamics is mainly used for emulating short time (several milliseconds or less), non-thread
Property structural model, such as collision, impact.When solving, display dynamics module is established by the partial differential equation of the conservation of momentum
Contacting between acceleration and stress tensor, equation is as follows:
Energy conservation equation is as follows:
By inputting corresponding boundary value, these equations can clearly solve each element in model.It is above-mentioned various
Middle ρ is the density of object, and σ is stress, and ε is strain, and b is physical strength, and e is energy.
As shown in Figure 1, fall the flow diagram of Safety Analysis Method for explosive provided in an embodiment of the present invention, packet
It includes:
Step 100 carries out three-dimensional modeling to hemispherical Explosive Parts using modeling software SolidWorks；
Specifically, when carrying out finite element stimulation using ANSYS, usually there are two types of way of modeling: first is that corresponding
Mapping software in establish geometrical model, then save into corresponding format and import ANSYS, but in the process for exporting and importing
In, the partial information of model can lose, or situations such as data mismatch occur, make troubles to emulation；Second is that utilizing ANSYS
Included modeling tool is modeled, but ANSYS included modeling tool operation is sufficiently complex, and interface is very unfriendly, right
It is very huge in the workload of complex model, modeling.The modeling software SolidWorks of CAD company is a very powerful builds
Mould software has the advantages that easy to operate, high-efficient concurrently.The embodiment of the present invention utilizes the associated tool ANSYS CAD of ANSYS
Configuration Manager is associated SolidWorks and ANSYS Workbench, so as to by SolidWorks
Into ANSYS Workbench, be simulation calculation band greatly facilitates the direct seamless interfacing of the model established in software.Together
When, after modifying in SolidWorks to model, can directly it be updated accordingly in ANSYS.
Therefore, it is described using modeling software SolidWorks to hemispherical Explosive Parts carry out three-dimensional modeling the step of it
Before, further includes:
Using the associated tool ANSYS CAD Configuration Manager of ANSYS to SolidWorks and ANSYS
Workbench is associated.
It can be realized more conveniently using modeling software SolidWorks and three-dimensional modeling is carried out to hemispherical Explosive Parts.
As shown in Fig. 2, for using SolidWorks hemispherical Explosive Parts are carried out with the 3D structural schematic diagram of three-dimensional modeling.
The model drawn in modeling software SolidWorks is introduced directly into finite element analysis by association by step 101
The interface of software ANSYS Workbench, and carry out the addition and grid dividing of material properties；
Specifically, the model drawn in SolidWorks is introduced directly into the interface ANSYS Workbench by association
In.
In a specific embodiment, calculation amount, grid cell size selection are reduced simultaneously for guarantee computational accuracy
104100 grids, 120614 nodes are finally obtained in 5mm.Grid total quality coefficient be 0.9048, mesh quality compared with
It is high.Since change of mechanical property is larger at different temperatures for explosive, the embodiment of the present invention carries out under conditions of temperature is 20 DEG C
Dropping simulation experiment obtains the material properties of HMX base PBX by consulting related data, as shown in table 1.
1 material parameter of table
Three kinds of step 102, selection typical cases fall operating condition, row bound condition setting of going forward side by side, using in ANSYS Workbench
Display dynamics module Explicit Dynamic the falling for hemispherical Explosive Parts is emulated；
Specifically, there is uncertainty due to falling posture, the embodiment of the present invention choose the most typical three kinds of postures into
Row simulation analysis, including Explosive Parts big end land fall, Explosive Parts small end lands to fall to land with Explosive Parts side and fall
It falls.
For hemispherical Explosive Parts in assembling process, height of table is about 1m, therefore the embodiment of the present invention is to fall with 1m
Height is emulated.In order to reduce calculation amount, the speed of Explosive Parts landing is directly calculated, by the side that initial speed is arranged
The equivalent falling height of method.
The embodiment of the present invention is shown using the Explicit Dynamic in ANSYS Workbench finite element analysis software
Dynamics module carries out simulation analysis.
It is 4428.5mm/s, In that height 1m, which is brought into after formula calculates, and obtains Explosive Parts in the instantaneous speed of landing
Velocity is selected in Initial Condition, chooses explosive entity, and numerical value 4428.5 is set, setting direction is vertical
Ground.To guarantee computational accuracy, normal gravity Standard Earth Gravity is added to Explosive Parts, acceleration value is
9806.6mm/s2, direction is perpendicular to the ground.Ground need to remain motionless in calculating process, therefore apply to the bottom surface on ground
Fixed Support constraint.In the situation that Explosive Parts side lands, there is relative motion between Explosive Parts and ground, therefore
It need to consider the sliding friction between Explosive Parts and ground, coefficient of friction is set as 0.1.Ensuring that Explosive Parts are abundant with ground
While collision, in order to reduce calculation amount, the calculating time it will be set as 1ms.
Step 103 carries out safety analysis to the hemispherical Explosive Parts according to simulation result.
Specifically, power is shown using the Explicit Dynamic in ANSYS Workbench finite element analysis software
It learns after module carries out simulation analysis, obtains three kinds of typical cases and fall stress and strain situation under operating condition.
Wherein, described the step of safety analysis is carried out to the hemispherical Explosive Parts according to simulation result, specifically:
Three kinds of typical cases are obtained based on simulation result and fall stress distribution cloud atlas and stress diagrams under operating condition, are utilized
Three kinds of typical cases fall stress distribution cloud atlas and stress diagrams under operating condition, fall condition to the hemispherical Explosive Parts
Under safety analyzed；
Specifically, three kinds of typical cases are obtained based on simulation result and falls stress distribution cloud atlas and stress curve under operating condition
Figure obtains when explosive big end lands including obtaining stress distribution cloud atlas and stress diagrams when Explosive Parts small end lands
Stress distribution cloud atlas and stress diagrams obtain stress distribution cloud atlas and stress diagrams when explosive side lands.Using institute
The explosion limit stress value of the stress distribution cloud atlas and stress diagrams of acquisition and the hemispherical Explosive Parts, to hemisphere
Whether shape Explosive Parts can occur explosion when falling is analyzed.
When Explosive Parts small end lands, stress distribution cloud atlas is as shown in figure 3, stress curve is as shown in Figure 4.In this feelings
Under condition, the instantaneous touch area of explosive and collision on the ground is small, therefore stress concentration distribution is around the point with ground face contact, and rapidly
Inwardly diffusion.Collision process lasts about 1ms, and maximum stress is present in 0.4ms, maximum stress value 280.36MPa, the stress
Value is still much smaller than the explosion limit stress value of explosive, therefore will not explode.
When explosive big end lands, stress distribution cloud atlas is as shown in figure 5, stress curve is as shown in Figure 6.Explosive Parts and ground
Face collision instantaneous touch area it is relatively large, therefore Explosive Parts with face contact part stress distribution it is uniform, stress value compared with
It is small, but the stress of the part can be passed up to explosive upper end along Explosive Parts, stress collection occur in Explosive Parts small end
In situation.After explosive and ground face contact, the kinetic energy of Explosive Parts, elastic potential energy, it is interior can just start to mutually convert, therefore
Explosive Parts will start to vibrate, and peak stress is present in 0.3ms for the first time, stress 78.647MPa, and the second minor peaks occur
At 0.9ms, stress value 83.607MPa.Thus it can determine whether, maximum stress value is still much smaller than the explosion limit stress of explosive
Value, therefore will not explode.
When explosive side lands, stress distribution cloud atlas is as shown in fig. 7, stress curve is as shown in Figure 8.It lands in explosive
In 0.05ms, relative displacement does not occur between explosive and ground, explosive is rapidly increased to the ground contacting part component of stress
164.16MPa.Opposite sliding takes place from 0.05 to 0.55ms, between explosive and ground, but relative displacement is smaller, explosive side
Face stress maximum value continues to be raised slowly to 227.71MPa.From 0.55ms to 1ms, with ground apparent phase occurs for Explosive Parts
To displacement, explosive side stress maximum value starts to rise rapidly, and maximum stress reaches 337.18MPa, and the maximum stress value is still remote
Less than the explosion limit stress value of explosive, therefore will not explode.
Then, three kinds of typical cases described in the hemispherical Explosive Parts are fallen under operating condition using Mohr-Coulomb criterion
Structural strength is analyzed and determined.
Specifically, criterion of strength is the basis for judging explosive structure and whether destroying.Since explosive material stretches and compresses broken
Bad performance has apparent difference, therefore common strength theory such as maximum tension stress theory, maximum stretching strain in the mechanics of materials
Theory, maximum shear theory etc. cannot all be applied to explosive material well.Tang Wei, Li Ming etc. are in paper " four kinds of criterion of strength
Adaptability [J] Solid Mechanics journal in plastic bonded explosive intensive analysis, 2013,34 (6): in 550-555. " relatively
Applicabilities of four kinds of criterion of strength in high polymer viscous explosive intensive analysis propose the Mohr-Coulomb criterion in terms of precision
It is optimal, therefore the embodiment of the present invention analyze to the intensity of the hemispherical Explosive Parts and sentence using Mohr-Coulomb criterion
It is disconnected.
Mohr-Coulomb criterion expression formula are as follows:
F=τ13+βσ13=C (5)
τ in formulaij、σij, β expression formula difference it is as follows:
Wherein, σi、σjFor principal stress, C is yield limit, σt、σcRespectively material is uniaxially stretched intensity and uniaxial compression
Intensity.σ can be obtained by consulting related datat=6.47MPa, σc=40.21MPa, is calculated β=0.161.In Tang Wei, Lee
In bright equal experiment, obtain under complex stress condition, the three-dimensional principal stress at HMX base PBX destruction at first, and thus can count
Calculating and obtaining the Mohr-Coulomb yield limit of HMX base PBX is C=29.0MPa.Therefore, as the Mohr- of explosive structure
Coulomb stress value be greater than yield limit be 29.0MPa when, explosive structure destroy.
User defined results is selected in WORKBENCH post-processing, and inputs=0.5* (s1-s3)+0.5*
Stress curve and Stress Map under the exportable Mohr-Coulomb criterion of 0.161* (s1+s3).Fig. 9 mentions for the embodiment of the present invention
The three kinds of typical cases supplied fall stress diagrams of the posture under Mohr-Coulomb criterion.It can be seen in figure 9 that with three kinds of allusion quotations
When type posture is fallen from workbench, the Mohr-Coulomb stress of Explosive Parts is both greater than yield limit, therefore explosive structure meeting
It destroys.
Explosive provided in an embodiment of the present invention falls Safety Analysis Method, by Explosive Parts in three kinds of typical postures
Fall and emulated under situation, the safety of Explosive Parts and structural intergrity are analyzed using simulation result, test at
This is low, can safely, effectively obtain the safety analysis conclusion of Explosive Parts.
As shown in Figure 10, fall the structural schematic diagram of safety analysis device, packet for explosive provided in an embodiment of the present invention
It includes: modeling module 10, import modul 20, emulation module 30 and analysis module 40, wherein
Modeling module 10, for carrying out three-dimensional modeling to hemispherical Explosive Parts using modeling software SolidWorks；
Modeling module of the embodiment of the present invention 10 can be realized more conveniently to hemisphere using modeling software SolidWorks
Shape Explosive Parts carry out three-dimensional modeling.
Explosive falls safety analysis device further include:
Relating module, for the associated tool ANSYS CAD Configuration Manager couple using ANSYS
SolidWorks is associated with ANSYS Workbench.
Import modul 20, it is limited for the model drawn in modeling software SolidWorks to be introduced directly by association
The interface of meta analysis software ANSYS Workbench, and carry out the addition and grid dividing of material properties；
Specifically, the model drawn in SolidWorks is introduced directly into ANSYS by association by import modul 20
In the interface Workbench.
In a specific embodiment, calculation amount, grid cell size selection are reduced simultaneously for guarantee computational accuracy
104100 grids, 120614 nodes are finally obtained in 5mm.Grid total quality coefficient be 0.9048, mesh quality compared with
It is high.Since change of mechanical property is larger at different temperatures for explosive, the embodiment of the present invention carries out under conditions of temperature is 20 DEG C
Dropping simulation experiment, and the material properties of HMX base PBX are obtained by consulting related data.
Emulation module 30 falls operating condition for choosing three kinds of typical cases, and row bound condition setting of going forward side by side utilizes ANSYS
Display dynamics module Explicit Dynamic in Workbench imitates the falling for hemispherical Explosive Parts
Very；
Specifically, there is uncertainty due to falling posture, the embodiment of the present invention choose the most typical three kinds of postures into
Row simulation analysis, including Explosive Parts big end land fall, Explosive Parts small end lands to fall to land with Explosive Parts side and fall
It falls.
For hemispherical Explosive Parts in assembling process, height of table is about 1m, therefore the embodiment of the present invention is to fall with 1m
Height is emulated.In order to reduce calculation amount, the speed of Explosive Parts landing is directly calculated, by the side that initial speed is arranged
The equivalent falling height of method.
Emulation module 30 is shown dynamic using the Explicit Dynamic in ANSYS Workbench finite element analysis software
Mechanics module carries out simulation analysis.
It is 4428.5mm/s, In that height 1m, which is brought into after formula calculates, and obtains Explosive Parts in the instantaneous speed of landing
Velocity is selected in Initial Condition, chooses explosive entity, and numerical value 4428.5 is set, setting direction is vertical
Ground.To guarantee computational accuracy, normal gravity Standard Earth Gravity is added to Explosive Parts, acceleration value is
9806.6mm/s2, direction is perpendicular to the ground.Ground need to remain motionless in calculating process, therefore apply to the bottom surface on ground
Fixed Support constraint.In the situation that Explosive Parts side lands, there is relative motion between Explosive Parts and ground, therefore
It need to consider the sliding friction between Explosive Parts and ground, coefficient of friction is set as 0.1.Ensuring that Explosive Parts are abundant with ground
While collision, in order to reduce calculation amount, the calculating time it will be set as 1ms.
Analysis module 40, for carrying out safety analysis to the hemispherical Explosive Parts according to simulation result.
Specifically, power is shown using the Explicit Dynamic in ANSYS Workbench finite element analysis software
It learns after module carries out simulation analysis, obtains three kinds of typical cases and fall stress and strain situation under operating condition.
The analysis module is specifically used for:
Three kinds of typical cases are obtained based on simulation result and fall stress distribution cloud atlas and stress diagrams under operating condition, are utilized
Three kinds of typical cases fall stress distribution cloud atlas and stress diagrams under operating condition, fall condition to the hemispherical Explosive Parts
Under safety analyzed；
Specifically, three kinds of typical cases are obtained based on simulation result and falls stress distribution cloud atlas and stress curve under operating condition
Figure obtains when explosive big end lands including obtaining stress distribution cloud atlas and stress diagrams when Explosive Parts small end lands
Stress distribution cloud atlas and stress diagrams obtain stress distribution cloud atlas and stress diagrams when explosive side lands.Using institute
The explosion limit stress value of the stress distribution cloud atlas and stress diagrams of acquisition and the hemispherical Explosive Parts, to hemisphere
Whether shape Explosive Parts can occur explosion when falling is analyzed.
Structure under operating condition is fallen to three kinds of typical cases described in the hemispherical Explosive Parts using Mohr-Coulomb criterion
Intensity is analyzed and determined.
Explosive provided in an embodiment of the present invention falls safety analysis device, by Explosive Parts in three kinds of typical postures
Fall and emulated under situation, the safety of Explosive Parts and structural intergrity are analyzed using simulation result, test at
This is low, can safely, effectively obtain the safety analysis conclusion of Explosive Parts.
Figure 11 is the entity structure schematic diagram of electronic equipment provided in an embodiment of the present invention, and as shown in figure 11, which sets
Standby may include: processor (processor) 1110, communication interface (Communications Interface) 1120, storage
Device (memory) 1130 and communication bus 1140, wherein processor 1110, communication interface 1120, memory 1130 pass through communication
Bus 1140 completes mutual communication.Processor 1110, which can call, to be stored on memory 1130 and can be in processor 1110
The computer program of upper operation falls Safety Analysis Method to execute explosive provided by above-mentioned each method embodiment, such as
It include: that three-dimensional modeling is carried out to hemispherical Explosive Parts using modeling software SolidWorks；By modeling software SolidWorks
In the model that draws the interface of finite element analysis software ANSYS Workbench is introduced directly by association, and carry out material
The addition and grid dividing of attribute；It chooses three kinds of typical cases and falls operating condition, row bound condition setting of going forward side by side utilizes ANSYS
Display dynamics module Explicit Dynamic in Workbench imitates the falling for hemispherical Explosive Parts
Very；Safety analysis is carried out to the hemispherical Explosive Parts according to simulation result.
In addition, the logical order in above-mentioned memory 1130 can be realized by way of SFU software functional unit and conduct
Independent product when selling or using, can store in a computer readable storage medium.Based on this understanding, originally
The technical solution of the inventive embodiments substantially part of the part that contributes to existing technology or the technical solution in other words
It can be expressed in the form of software products, which is stored in a storage medium, including some instructions
With so that computer equipment (can be personal computer, server or the network equipment an etc.) execution present invention is each
The all or part of the steps of embodiment the method.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory
(ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic or disk
Etc. the various media that can store program code.
The embodiment of the present invention also provides a kind of non-transient computer readable storage medium, is stored thereon with computer program,
The computer program realizes that above-mentioned each method embodiment provides explosive when being executed by processor falls Safety Analysis Method, example
It such as include: that three-dimensional modeling is carried out to hemispherical Explosive Parts using modeling software SolidWorks；By modeling software
The model drawn in SolidWorks is introduced directly into the interface of finite element analysis software ANSYS Workbench by association,
And carry out the addition and grid dividing of material properties；It chooses three kinds of typical cases and falls operating condition, row bound condition setting of going forward side by side utilizes
Display dynamics module Explicit Dynamic in ANSYS Workbench to the hemispherical Explosive Parts fall into
Row emulation；Safety analysis is carried out to the hemispherical Explosive Parts according to simulation result.
The apparatus embodiments described above are merely exemplary, wherein described, unit can as illustrated by the separation member
It is physically separated with being or may not be, component shown as a unit may or may not be physics list
Member, it can it is in one place, or may be distributed over multiple network units.It can be selected according to the actual needs
In some or all of the modules achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying creativeness
Labour in the case where, it can understand and implement.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
It realizes by means of software and necessary general hardware platform, naturally it is also possible to pass through hardware.Based on this understanding, on
Stating technical solution, substantially the part that contributes to existing technology can be embodied in the form of software products in other words, should
Computer software product may be stored in a computer readable storage medium, such as ROM/RAM, magnetic disk, CD, including several fingers
It enables and using so that a computer equipment (can be personal computer, server or the network equipment etc.) executes each implementation
Method described in certain parts of example or embodiment.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of explosive falls Safety Analysis Method characterized by comprising
Three-dimensional modeling is carried out to hemispherical Explosive Parts using modeling software SolidWorks；
The model drawn in modeling software SolidWorks is introduced directly into finite element analysis software ANSYS by association
The interface of Workbench, and carry out the addition and grid dividing of material properties；
It chooses three kinds of typical cases and falls operating condition, row bound condition setting of going forward side by side utilizes the display dynamics in ANSYS Workbench
Module Explicit Dynamic emulates the falling for hemispherical Explosive Parts；
Safety analysis is carried out to the hemispherical Explosive Parts according to simulation result.
2. explosive according to claim 1 falls Safety Analysis Method, which is characterized in that three kinds of typical cases fall work
Condition include: Explosive Parts small end land fall, Explosive Parts big end lands to fall to land with Explosive Parts side and fall.
3. explosive according to claim 1 falls Safety Analysis Method, which is characterized in that described to utilize modeling software
Before the step of SolidWorks carries out three-dimensional modeling to hemispherical Explosive Parts, further includes:
Using the associated tool ANSYS CAD Configuration Manager of ANSYS to SolidWorks and ANSYS
Workbench is associated.
4. explosive according to claim 1 falls Safety Analysis Method, which is characterized in that described according to simulation result pair
The hemispherical Explosive Parts carry out the step of safety analysis, specifically:
Three kinds of typical cases are obtained based on simulation result and fall stress distribution cloud atlas and stress diagrams under operating condition, using described
Three kinds of typical cases fall stress distribution cloud atlas and stress diagrams under operating condition, under the conditions of falling to the hemispherical Explosive Parts
Safety is analyzed；
Structural strength under operating condition is fallen to three kinds of typical cases described in the hemispherical Explosive Parts using Mohr-Coulomb criterion
It is analyzed and determined.
5. a kind of explosive falls safety analysis device characterized by comprising
Modeling module, for carrying out three-dimensional modeling to hemispherical Explosive Parts using modeling software SolidWorks；
Import modul, for the model drawn in modeling software SolidWorks to be introduced directly into finite element analysis by association
The interface of software ANSYS Workbench, and carry out the addition and grid dividing of material properties；
Emulation module falls operating condition for choosing three kinds of typical cases, and row bound condition setting of going forward side by side utilizes ANSYS Workbench
In display dynamics module Explicit Dynamic the falling for hemispherical Explosive Parts is emulated；
Analysis module, for carrying out safety analysis to the hemispherical Explosive Parts according to simulation result.
6. explosive according to claim 5 falls safety analysis device, which is characterized in that three kinds of typical cases fall work
Condition include: Explosive Parts small end land fall, Explosive Parts big end lands to fall to land with Explosive Parts side and fall.
7. explosive according to claim 5 falls safety analysis device, which is characterized in that further include:
Relating module, for the associated tool ANSYS CAD Configuration Manager couple using ANSYS
SolidWorks is associated with ANSYS Workbench.
8. explosive according to claim 5 falls safety analysis device, which is characterized in that the analysis module is specifically used
In:
Three kinds of typical cases are obtained based on simulation result and fall stress distribution cloud atlas and stress diagrams under operating condition, using described
Three kinds of typical cases fall stress distribution cloud atlas and stress diagrams under operating condition, under the conditions of falling to the hemispherical Explosive Parts
Safety is analyzed；
Structural strength under operating condition is fallen to three kinds of typical cases described in the hemispherical Explosive Parts using Mohr-Coulomb criterion
It is analyzed and determined.
9. a kind of electronic equipment including memory, processor and stores the calculating that can be run on a memory and on a processor
Machine program, which is characterized in that realize that the explosive as described in any one of Claims 1-4 falls when the processor executes described program
The step of falling Safety Analysis Method.
10. a kind of non-transient computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer
The step of explosive as described in any one of Claims 1-4 falls Safety Analysis Method is realized when program is executed by processor.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2237175A1 (en) * | 2009-04-01 | 2010-10-06 | Livermore Software Technology Corporation | Explosion simulation in finite element analysis |
| CN107563052A (en) * | 2017-08-31 | 2018-01-09 | 西安近代化学研究所 | A kind of penetration type explosive loading combining structure emulation design method |
-
2019
- 2019-07-30 CN CN201910693926.6A patent/CN110427694A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2237175A1 (en) * | 2009-04-01 | 2010-10-06 | Livermore Software Technology Corporation | Explosion simulation in finite element analysis |
| CN107563052A (en) * | 2017-08-31 | 2018-01-09 | 西安近代化学研究所 | A kind of penetration type explosive loading combining structure emulation design method |
Non-Patent Citations (2)
| Title |
|---|
| 孙文旭等: "低压长脉冲作用下PBX炸药的响应特性", 《弹道学报》 * |
| 洪昊等: "半球形炸药部件跌落应力分析", 《兵器装备工程学报》 * |
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