CN106018464A - Explosive loading and penetrating stability evaluation method based on equivalent model experiment - Google Patents

Explosive loading and penetrating stability evaluation method based on equivalent model experiment Download PDF

Info

Publication number
CN106018464A
CN106018464A CN201610318244.3A CN201610318244A CN106018464A CN 106018464 A CN106018464 A CN 106018464A CN 201610318244 A CN201610318244 A CN 201610318244A CN 106018464 A CN106018464 A CN 106018464A
Authority
CN
China
Prior art keywords
explosive loading
experiment
explosive
equivalence
penetrating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610318244.3A
Other languages
Chinese (zh)
Other versions
CN106018464B (en
Inventor
屈可朋
周涛
李亮亮
肖玮
沈飞
王辉
何超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian Modern Chemistry Research Institute
Original Assignee
Xian Modern Chemistry Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xian Modern Chemistry Research Institute filed Critical Xian Modern Chemistry Research Institute
Priority to CN201610318244.3A priority Critical patent/CN106018464B/en
Publication of CN106018464A publication Critical patent/CN106018464A/en
Application granted granted Critical
Publication of CN106018464B publication Critical patent/CN106018464B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/16—Investigating or analyzing materials by the use of thermal means by investigating thermal coefficient of expansion
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces

Abstract

The invention discloses an explosive loading and penetrating stability evaluation method based on an equivalent model experiment. The method comprises the following steps that firstly, dynamic mechanical performance and thermophysical parameters of explosive loading are actually measured, and a largest compression load and a largest friction load which are borne in the penetrating process of explosive loading are determined by means of numerical simulation; secondly, a loading device equivalent to a corresponding stimulus type is designed, reaction conditions of loaded explosive under stimulus of different load intensities are observed through an intensifying experiment method, and the explosive loading and penetrating stability reliability is calculated according to an intensification coefficient; finally, the explosive loading and penetrating stability reliability calculated through the model experiment is compared with that of the engineering test requirement, and whether the explosive loading and penetrating stability reliability meets the engineering test requirement or not is judged. The method for evaluating the explosive loading and penetrating stability through the model experiment can reduce the experiment cost, shorten a research cycle and effectively support application and development of a penetrating warhead.

Description

A kind of explosive loading penetration stability evaluation methodology based on equivalent model experiment
Technical field
The invention belongs to powder charge stability technical field, relate to a kind of explosive loading stability evaluation methodology, particularly to a kind of base Explosive loading penetration stability evaluation methodology in equivalent model experiment.
Background technology
In war in recent years, Penetrating Warhead has become as attack underground deep layer target or the important means of naval vessels.Penetration is fought Pan is during target of attack target, and explosive loading needs to bear sufficiently complex and harsh ambient stress, may cause explosive Powder charge damage, structural intergrity destroy the key issues such as even premature burst, thus affect safety in utilization and the fighting efficiency of warhead. Accordingly, it would be desirable to carry out explosive loading stability evaluation under the conditions of penetration, transship high for penetration explosive loading type selecting and penertration resistance Foundation can be provided by explosive de-sign.
At present, the method for explosive loading penetration stability evaluation mainly has ball firing to test, and laboratory model experiment and numerical value are imitated Very.It is to utilize cannon or rocket sledge to launch contracting than bullet or 1 that commonly used method is tested in ball firing；1 live shell penetration target target, The penetration stability of examination explosive loading, the advantage of this experiment is simple, directly perceived, and shortcoming is costly, and the cycle is long, it is difficult to Obtain related data, can use in the case of research funding is more abundant.Numerical simulation can reduce experimental cost, and shortening is ground Cycle processed, but often due to the reason such as under Dynamic Loading the fundamental performance parameter of explosive is inaccurate so that result of calculation and reality There is certain deviation in border situation, numerical simulation can only calculate explosive loading suffered ambient stress everywhere, it is impossible to directly calculates dress Medicine response situation (burning, detonation, detonation) under this stress effect.Laboratory model experiment is to load system by design simulation System, directly obtains explosive loading response parameter under different stimulated effect and response situation, and on this basis, evaluates explosive The penetration stability of powder charge, research cost is relatively low, can carry out a large amount of explorative experiment, it is adaptable to project demonstration, scheme, engineering Develop and each stage of sizing.
Shortcomings and deficiencies of the prior art are: force environment and the warhead penetration mistake of explosive loading in the experiment of (1) laboratory model The force environment of journey explosive loading does not have equivalence；(2) ball firing experimental evaluation method research cost height, cycle length, dynamic State response parameter is difficult to obtain.
Summary of the invention
It is an object of the invention to laboratory equivalent simulation loading system as experimental vehicle, it is provided that a kind of fried by model experiment evaluation The method of medicine powder charge penetration stability.On the basis of measuring explosive loading dynamic mechanical and hot Physical Parameters, pass through numerical value Emulation determines the maximum compression load suffered by explosive loading Penetration and frrction load, utilizes corresponding equivalence charger, Using and strengthen experimental technique, examination explosive loading is to the corresponding tolerance stimulated, and invades according to coefficient of intensification calculating explosive loading The reliability of thorough stability, is finally wanted the explosive loading penetration stability reliability calculated by model experiment with engineering test The reliability asked is compared, it is judged that whether it meets engineering test requirement.
In order to achieve the above object, the present invention uses following technical solution:
A kind of explosive loading penetration stability evaluation methodology based on equivalent model experiment, experimental provision used is in the method Effect charger, described equivalence charger is made up of frrction load analogue experiment installation and compressive load analogue experiment installation.
Frrction load analogue experiment installation includes end cap, force-transmitting pole, friction cylinder, sample, simulation medicine, foil gauge, sleeve and the end Seat, wherein, end cap is arranged on one end of force-transmitting pole, and the other end of force-transmitting pole embeds in the inner chamber of friction cylinder, in friction cylinder Chamber is also equipped with sample, the cavity of sample both sides is provided with simulation medicine；Described foil gauge is symmetricly set on outside friction cylinder On wall, friction cylinder is arranged in sleeve away from one end of end cap, and sleeve is installed in the base away from one end of end cap.
Compressive load analogue experiment installation include hitting post, mould cylinder, sample, cushion pad, under hit post and sensor, sample is installed In mould cylinder, sample two ends be separately installed with hit post and under hit post, upper hit post, under hit buffering be installed between post and sample Pad, sensor is installed on down the other end hitting post.
A kind of explosive loading penetration stability evaluation methodology based on equivalent model experiment, comprises the steps:
Step one: explosive loading dynamic mechanical and hot Physical Parameters obtain
The experimental provision of explosive loading dynamic mechanical is split hopkinson press bar, and ultimate principle is: explosive loading tried Part is placed between two depression bars, produces acceleration pulse by accelerating impact bar, loads sample.Utilize simultaneously and be pasted onto pressure Foil gauge on bar carrys out recording pulse signal.According to the incidence wave ε measured by resistance strain gage on depression bari, echo εrAnd transmission Ripple εt, and combine the longitudinal elastic wave velocity of wave c in guide rod, the initial length l of sample0, the elastic modulus E of depression bar, depression bar section A And specimen cross section A0, utilize formula (1)～(3) just can calculate the dynamic mechanical parameter of explosive loading, including answering VariabilityStrain stress and stress σ.
ϵ · = c l 0 ( ϵ i - ϵ r - ϵ t ) - - - ( 1 )
ϵ = c l 0 ∫ 0 t ( ϵ i - ϵ r - ϵ t ) d t - - - ( 2 )
σ = A 2 A 0 E ( ϵ i + ϵ r + ϵ t ) - - - ( 3 )
The thermal physical property parameter of explosive loading mainly includes specific heat capacity, linear expansion coefficient and thermal conductivity, respectively refers to GJB772A-97 In method 405.1, method 408.2 and method 409.2 test.
Step 2: determine the maximum compression load suffered by explosive loading Penetration and frrction load
Utilize business software LS-DYNA, set up the phantom of warhead penetration target, and substitute into the explosive that step one obtains Powder charge dynamic mechanical and hot Physical Parameters, calculate explosive loading big compressive load suffered in Penetration and friction carries Lotus.
Step 3: equivalence strengthening model experiment
According to the result of calculation of step 2, frrction load and compressive load are respectively adopted " equivalence of friction horsepower density " principle and " answer Power rate equivalence " principle, utilize corresponding equivalence charger, choose different model experiment coefficient of intensification (the i.e. increasings of integral multiple Big numerical simulation result of calculation), the observation explosive loading response situation when different coefficient of intensification.
Step 4: explosive loading penetration stability reliability calculating
Response situation based on the coefficient of intensification chosen in equivalence strengthening model experiment and explosive loading calculates explosive loading penetration and stabilizes The reliability of property.
Explosive loading penetration stability reliability can be analyzed by Stress-Strength Interference Model and calculate.Equivalence strengthening experiment increases Compression that big explosive loading is subject to and frrction load, explosive loading stability reliability strengthening experimental model is shown in Fig. 1, curve 1 For compression/frrction load probability density curve under equivalence intensified condition, curve 2 detonates threshold probability density curve for explosive loading.
Reliability R of explosive loading penetration stability under strengthening experiment conditionL、NFor:
R L , N = Φ { μ s - μ d μ s 2 c s 2 + μ d 2 c d 2 } = Φ { η d - 1 η d 2 c s 2 + c d 2 } - - - ( 4 )
In formula, μs、cs、μd、cdIt is respectively explosive loading to detonate the average of compression/frrction load under threshold value and equivalence strengthening experiment condition With coefficient of variation, ηp=μs/μdFor the coefficient of intensification under equivalence strengthening experiment condition.
Step 5: explosive loading penetration stability is evaluated
In engineering test, after Penetrating Warhead penetration target, the reliability that explosive loading is stabilized should be greater than 0.999, based on step Explosive loading stability reliability R that four calculateL、NIf its value is more than 0.999, then it is judged to that explosive loading is stabilized, meets Engineering test requirement, otherwise, is unsatisfactory for.
A kind of based on equivalent model experiment the explosive loading penetration stability evaluation methodology of the present invention, the technique effect brought embodies In the following aspects:
(1) use " stress rate equivalence principle " and " friction horsepower density equivalence principle ", devise laboratory model experiment dress Put, the force environment of explosive loading and the force environment equivalent of warhead Penetration explosive loading in model experiment, it is possible to true Reflect explosive loading response parameter under friction and compressive load effect and response situation in fact；
(2) the explosive loading penetration stability evaluation methodology that the present invention proposes, and laboratory equivalent model experiment matches, it is possible to Realizing the evaluation to explosive loading penetration stability, compare with ball firing experiment, research cost is low, the cycle is short, cost performance is high.
Accompanying drawing explanation
Fig. 1 is that explosive loading penetration stability reliability strengthens experimental model.
A kind of explosive loading penetration stability evaluation methodology schematic diagram based on equivalent model experiment described in Fig. 2 this patent.
Fig. 3 is frrction load analogue experiment installation schematic diagram.
Fig. 4 is compressive load analogue experiment installation schematic diagram.
Fig. 5 is the frrction load oscillogram recorded in equivalence strengthening model experiment.
Fig. 6 is the compressive load oscillogram recorded in equivalence strengthening model experiment.
Label in figure represents respectively: 11, end cap 12, force-transmitting pole 13, friction cylinder 14, sample, 15, simulation medicine 16, Foil gauge 17, sleeve 18, base, 19, on hit post, 20, mould cylinder, 21, sample, 22, cushion pad, 23, under hit Post, 24, sensor.
Detailed description of the invention
Below by detailed description of the invention, the present invention is further elaborated.
Such as Fig. 1-Fig. 4, a kind of explosive loading penetration stability evaluation methodology based on equivalent model experiment, in the method reality used Experiment device is equivalence charger 5, and described equivalence charger 5 is by frrction load analogue experiment installation 6 and compressive load simulation experiment Device 7 forms.
Frrction load analogue experiment installation 6 includes end cap 11, force-transmitting pole 12, friction cylinder 13, sample 14, simulation medicine 15, answers Becoming sheet 16, sleeve 17 and base 18, wherein, end cap 11 is arranged on one end of force-transmitting pole 12, and the other end of force-transmitting pole 12 is embedding Enter in the inner chamber of friction cylinder 13, the inner chamber of friction cylinder 13 is also equipped with sample 14, the cavity of sample 14 both sides is arranged There is simulation medicine 15；Described foil gauge 16 is symmetricly set on the outer wall of friction cylinder 13, and friction cylinder 13 is away from the one of end cap 11 End is arranged in sleeve 17, and sleeve 17 is arranged in base 18 away from one end of end cap 11.During experiment, pass through high-speed motion Projectile impact end cap 11, force-transmitting pole 12 sample 14 applied axial compressive stress, and utilizes the maximum fortune of force-transmitting pole 12 Row distance controls the stroke of frrction load；Owing to the endoporus of sleeve 17 is reducing centre bore, fast ram effect makes friction cylinder Simulation medicine 15 and sample 14 in 13 produce circumferential expansion, the foil gauge 16 being pasted on friction cylinder 3 sidewall excircle survey Measure its circumferential strain, theoretical according to thick cylinder, i.e. can get suffered circumferential pressure in sample 14 friction process.Pass through circumferential pressure And speed, and then available friction horsepower density.
Compressive load analogue experiment installation 7 include hitting post 19, mould cylinder 20, sample 21, cushion pad 22, under hit post 23 and pass Sensor 24, sample 21 is installed in mould cylinder 20, sample 21 two ends be separately installed with hit post 19 and under hit post 23, hit upper Post 19, under hit cushion pad 22 be installed between post 23 and sample 21, sensor 24 is installed on down the other end hitting post 19.Real When testing, logical sample 21 is installed in mould cylinder 20, sample 21 two ends be separately installed with hit post 19 and under hit post 23, hit upper Post 19, under hit cushion pad 22 be installed between post 23 and sample 21.The sensor 24 of stress loading suffered by record explosive loading It is installed on down the other end hitting post 19.In experiment, realize rushing sample 21 by hitting post 19 on the projectile impact of high-speed motion Hit loading, utilize sensor 24 to record the stress wave in experimentation.
Described a kind of based on equivalent model experiment explosive loading penetration stability evaluation methodology, comprises the steps:
Step one: explosive loading dynamic mechanical and hot Physical Parameters obtain
The experimental provision of explosive loading dynamic mechanical is split hopkinson press bar, and ultimate principle is: explosive loading tried Part is placed between two depression bars, produces acceleration pulse by accelerating impact bar, loads sample.Utilize simultaneously and be pasted onto pressure Foil gauge on bar carrys out recording pulse signal.According to the incidence wave ε measured by resistance strain gage on depression bari, echo εrAnd transmission Ripple εt, and combine the longitudinal elastic wave velocity of wave c in guide rod, the initial length l of sample0, the elastic modulus E of depression bar, depression bar section A And specimen cross section A0, utilize formula (1)～(3) just can calculate the dynamic mechanical parameter of explosive loading, including answering VariabilityStrain stress and stress σ.
ϵ · = c l 0 ( ϵ i - ϵ r - ϵ t ) - - - ( 1 )
ϵ = c l 0 ∫ 0 t ( ϵ i - ϵ r - ϵ t ) d t - - - ( 2 )
σ = A 2 A 0 E ( ϵ i + ϵ r + ϵ t ) - - - ( 3 )
The thermal physical property parameter of explosive loading mainly includes specific heat capacity, linear expansion coefficient and thermal conductivity, respectively refers to GJB772A-97 In method 405.1, method 408.2 and method 409.2 test.
Step 2: determine the maximum compression load suffered by explosive loading Penetration and frrction load
Utilize business software LS-DYNA, set up the phantom of warhead penetration target, and substitute into the explosive that step one obtains Powder charge dynamic mechanical and hot Physical Parameters, calculate explosive loading big compressive load suffered in Penetration and friction carries Lotus.
Step 3: equivalence strengthening model experiment
According to the result of calculation of step 2, compressive load and frrction load are respectively adopted " stress rate equivalence " and " friction horsepower is close Degree equivalence " principle, utilize corresponding equivalence charger, choose different model experiment coefficient of intensification (the i.e. increases of integral multiple Numerical simulation result of calculation), the observation explosive loading response situation when different coefficient of intensification.
Step 4: explosive loading penetration stability reliability calculating
Response situation based on the coefficient of intensification chosen in equivalence strengthening model experiment and explosive loading calculates explosive loading penetration and stabilizes The reliability of property.
Explosive loading penetration stability reliability can be analyzed by Stress-Strength Interference Model and calculate.Equivalence strengthening experiment increases Compression that big explosive loading is subject to and frrction load, explosive loading stability reliability strengthening experimental model is shown in Fig. 1, curve 1 For compression/frrction load probability density curve under equivalence intensified condition, curve 2 detonates threshold probability density curve for explosive loading.
Reliability R of explosive loading penetration stability under strengthening experiment conditionL、NFor:
R L , N = Φ { μ s - μ d μ s 2 c s 2 + μ d 2 c d 2 } = Φ { η d - 1 η d 2 c s 2 + c d 2 } - - - ( 4 )
In formula, μs、cs、μd、cdIt is respectively explosive loading to detonate the average of compression/frrction load under threshold value and equivalence strengthening experiment condition With coefficient of variation, ηp=μs/μdFor the coefficient of intensification under equivalence strengthening experiment condition.
Step 5: explosive loading penetration stability is assessed
In engineering test, after Penetrating Warhead penetration target, the reliability that explosive loading is stabilized should be greater than 0.999, based on step Explosive loading stability reliability R that four calculateL、NIf its value is more than 0.999, then it is judged to that explosive loading is stabilized, meets Engineering test requirement, otherwise, is unsatisfactory for.
To be illustrated by specific embodiment below:
Embodiment 1:
The present embodiment is that the warhead of filling high explosive is with the thick armored concrete target of 900m/s speed penetration 6 meters.
Step one: explosive loading dynamic mechanical and hot Physical Parameters obtain
Using split hopkinson press bar to test explosive loading in strain rate is 3200s-1、3700s-1Dynamic with when 4300 Mechanical property parameter, its stress is respectively 25.6MPa, 28MPa and 30MPa, and strain is respectively 1.9%, 2.4% and 2.8%.
The specific heat capacity of explosive loading, line is recorded according to the method 405.1 in GJB772A-97, method 408.2 and method 409.2 The coefficient of expansion and thermal conductivity be respectively as follows: 1.327J/g/ DEG C, 9.1 (10-5K-1) and 1.21W/ (m K).
Step 2: determine the maximum compression load suffered by explosive loading Penetration and frrction load
Utilize business software LS-DYNA, set up 500kg warhead with 6 meters of thick reinforced concretes of 900m/s stroke speed penetration The phantom of soil target, and substitute into explosive loading dynamic mechanical and the hot Physical Parameters that step one obtains, calculate explosive dress The suffered compressive load of medicine and frrction load.Compressive load stress characterizes, and maximum stress is 500MPa, when stress rises Between be about 80us, i.e. stress rate be 6.25MPa/us, friction make load friction horsepower density characterize, its peak value is 9.5 × 107 w/m2。
Step 3: equivalence strengthening model experiment
Frrction load simulation experiment uses " equivalence of friction horsepower density " criterion, i.e. strengthens what explosive loading in model experiment was born Friction horsepower density is the integral multiple of suffered friction horsepower density in explosive loading Penetration.Use the frrction load shown in Fig. 3 Analogue experiment installation, selecting coefficient of intensification is 2 and 3, i.e. loads friction horsepower density and is respectively 1.9 × 108w/m2With 2.85 × 108 w/m2, Fig. 5 is the frrction load oscillogram recorded in equivalence strengthening model experiment.Test result indicate that, under two kinds of intensified conditions, Explosive loading is the most unburned the most quick-fried.
Compressive load model uses " stress rate equivalence " criterion, i.e. strengthens the stress rate that in model experiment, explosive loading is born and is The integral multiple of suffered stress rate in explosive loading Penetration.Use the compressive load analogue experiment installation shown in Fig. 4, select strong Changing coefficient is 2 and 3, and i.e. loading stress rate is respectively 12.5MPa/us and 18.75MPa/us, Fig. 6 is that equivalence strengthening model is real The impact compress load oscillogram recorded in testing.Test result indicate that, under two kinds of intensified conditions, explosive loading is the most unburned the most quick-fried.
Step 4: explosive loading penetration stability reliability calculating
For armored concrete target, typically take cs=0.10, cd=0.08, can calculate coefficient of intensification according to formula (4) is 2 Time again with 3 times, the reliability of explosive loading penetration stability is respectively 0.9996 and 0.9998.
Step 5: explosive loading penetration stability is evaluated
Result of calculation based on step 4, under the conditions of two kinds of Intensive loadings, warhead is with 900m/s stroke speed penetration 6 meters thick The reliability that after armored concrete target, explosive loading is stable is all higher than 0.999, it is judged that stabilize for explosive loading, meets engineering test and wants Ask.The result that this evaluation methodology obtains is consistent with 1:1 live shell engineering test result, illustrates the effectiveness of this evaluation methodology.
Embodiment 2:
The present embodiment is that the 500kg level warhead of filling high explosive fills with steel target thick for 700m/s speed penetration 30mm, explosive Medicine penetration stability evaluates equipment therefor and step with embodiment 1.
Explosive loading is 3000s in strain rate-1、3500s-1With dynamic mechanical parameter when 4100, its stress is respectively 28.6MPa, 35MPa and 41MPa, strain is respectively 1.9%, 1.8% and 1.6%.The specific heat capacity of explosive loading, line expand Coefficient and thermal conductivity be respectively as follows: 1.245J/g/ DEG C, 8.2 (10-5K-1) and 0.77W/ (m K).
Maximal compressed stress suffered by the display explosive loading of LS-DYNA result of calculation is 800MPa, and the stress rise time is about 40us, i.e. stress rate are 20MPa/us, and maximum friction power density is 3.2 × 107w/m2。
The strengthening experiment selecting coefficient of intensification to be 2 and 3 in equivalence strengthening model test, result shows under two kinds of intensified conditions, fried Medicine powder charge is the most unburned the most quick-fried.
For steel plate target, typically take cs=0.12, cd=0.10, can calculate coefficient of intensification according to formula (4) is 2 times and 3 Times time, the reliability of explosive loading penetration stability is respectively 0.9992 and 0.9995.That is: fight under the conditions of two kinds of Intensive loadings Pan is all higher than 0.999 with the reliability that explosive loading after steel target thick for 700m/s stroke speed penetration 30mm is stable, it is determined that for Explosive loading is stabilized, and meets engineering test requirement.The result that this evaluation methodology obtains is consistent with 1:1 live shell engineering test result, Illustrate the effectiveness of this evaluation methodology.

Claims (1)

1. an explosive loading penetration stability evaluation methodology based on equivalent model experiment, experimental provision used is in the method Equivalence charger (5), described equivalence charger (5) is simulated by frrction load analogue experiment installation (6) and compressive load Experimental provision (7) forms；Frrction load analogue experiment installation (6) include end cap (11), force-transmitting pole (12), friction cylinder (13), Sample (14), simulation medicine (15), foil gauge (16), sleeve (17) and base (18), wherein, end cap (11) is installed In one end of force-transmitting pole (12), the other end of force-transmitting pole (12) embeds in the inner chamber of friction cylinder (13), in friction cylinder (13) Inner chamber in be also equipped with sample (14), the cavity of sample (14) both sides is provided with simulation medicine (15)；Described foil gauge (16) being symmetricly set on the outer wall of friction cylinder (13), friction cylinder (13) is arranged on sleeve away from one end of end cap (11) (17), in, sleeve (17) is arranged in base (18) away from one end of end cap (11)；Compressive load analogue experiment installation (7) include hitting post (19), mould cylinder (20), sample (21), cushion pad (22), under hit post (23) and sensor (24), In sample (21) is installed on mould cylinder (20), sample (21) two ends be separately installed with hit post (19) and under hit post (23), Upper hit post (19), under hit cushion pad (22) be installed between post (23) and sample (21), sensor (24) is installed on Under hit the other end of post (19)；
Described a kind of based on equivalent model experiment explosive loading penetration stability evaluation methodology, it is characterised in that include as follows Step:
Step one: explosive loading dynamic mechanical and hot Physical Parameters obtain
Use split hopkinson press bar test explosive loading dynamic mechanical parameter, and according to national military standard GJB772A-97 In method 405.1, method 408.2 and method 409.2 measure the specific heat capacity of explosive loading, linear expansion coefficient and thermal conductivity respectively Three thermal physical property parameter values；
Step 2: determine the maximum compression load suffered by explosive loading Penetration and frrction load
Utilize business software LS-DYNA, set up the phantom of warhead penetration target, and substitute into the explosive that step one obtains Powder charge dynamic mechanical and hot Physical Parameters, calculate explosive loading big compressive load suffered in Penetration and friction carries Lotus；
Step 3: equivalence strengthening model experiment
According to the result of calculation of step 2, frrction load and compressive load are respectively adopted " equivalence of friction horsepower density " principle and " answer Power rate equivalence " principle, utilize corresponding equivalence charger, choose different model experiment coefficient of intensification, observe explosive loading Response situation when different coefficient of intensification；
Step 4: explosive loading penetration stability reliability calculating
Based on the coefficient of intensification chosen in equivalence strengthening model experiment and the response situation of explosive loading, use stress-strength interference mould Type carries out calculating explosive loading penetration stability reliability；
Reliability R of explosive loading penetration stability under strengthening experiment conditionL、NFor:
R L , N = Φ { μ s - μ d μ s 2 c s 2 + μ d 2 c d 2 } = Φ { η d - 1 η d 2 c s 2 + c d 2 }
In formula, μs、cs、μd、cdIt is respectively explosive loading to detonate the average of compression/frrction load under threshold value and equivalence strengthening experiment condition With coefficient of variation, ηp=μs/μdFor the coefficient of intensification under equivalence strengthening experiment condition.
Step 5: explosive loading penetration stability is evaluated
The reliability that the explosive loading penetration stability reliability calculated by model experiment and engineering test are required is compared Right, if the reliability that the explosive loading penetration stability reliability that model experiment calculates excessively requires more than engineering test, then judge It meets engineering test requirement, otherwise, is unsatisfactory for.
CN201610318244.3A 2016-05-13 2016-05-13 A kind of explosive loading penetration stability evaluation method based on equivalent model experiment Expired - Fee Related CN106018464B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610318244.3A CN106018464B (en) 2016-05-13 2016-05-13 A kind of explosive loading penetration stability evaluation method based on equivalent model experiment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610318244.3A CN106018464B (en) 2016-05-13 2016-05-13 A kind of explosive loading penetration stability evaluation method based on equivalent model experiment

Publications (2)

Publication Number Publication Date
CN106018464A true CN106018464A (en) 2016-10-12
CN106018464B CN106018464B (en) 2018-10-12

Family

ID=57099541

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610318244.3A Expired - Fee Related CN106018464B (en) 2016-05-13 2016-05-13 A kind of explosive loading penetration stability evaluation method based on equivalent model experiment

Country Status (1)

Country Link
CN (1) CN106018464B (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106989986A (en) * 2017-03-29 2017-07-28 西安近代化学研究所 Explosive loading responds stress test sensor locator
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
CN108387335A (en) * 2018-02-09 2018-08-10 西安近代化学研究所 A kind of experimental rig measuring powder charge thermal expansion force
CN108982050A (en) * 2018-08-28 2018-12-11 西安近代化学研究所 Bath scaled model experimental device and method are fallen in a kind of powder charge
CN109271708A (en) * 2018-09-19 2019-01-25 西安近代化学研究所 A kind of recombinant type explosive loading head construction optimum design method
CN109443447A (en) * 2018-12-20 2019-03-08 中国工程物理研究院化工材料研究所 The hot Combined Loading control system of explosive power
CN109975108A (en) * 2019-04-23 2019-07-05 中国人民解放军陆军工程大学 A kind of sandwich Waveform forming device for the test of explosively loading Hopkinson bar
CN110108744A (en) * 2019-05-08 2019-08-09 西安近代化学研究所 A kind of classification of explosives method based on thermal acceleration degradation
CN110530787A (en) * 2019-09-05 2019-12-03 西安近代化学研究所 A kind of explosive stress test device based on multiple pulses test
CN112611782A (en) * 2020-11-30 2021-04-06 北京理工大学 Dynamic manometric thermal analysis method for low-melting-point and volatile energetic material
CN113030425A (en) * 2021-02-01 2021-06-25 中北大学 Explosive stability evaluation experimental device for equivalently simulating penetration of projectile into steel target

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101216478A (en) * 2007-12-28 2008-07-09 中北大学 Explosive friction sensitivity instrument
US20120047989A1 (en) * 2010-09-01 2012-03-01 Orbital Sciences Corporation Shock simulation method and apparatus
CN104237117A (en) * 2014-09-18 2014-12-24 西安近代化学研究所 Grain friction test device under low-speed drop hammer impact loading
CN104266962A (en) * 2014-10-15 2015-01-07 中国人民解放军国防科学技术大学 Device for testing safety performance of explosive under impact and friction conditions
CN104535439A (en) * 2015-01-09 2015-04-22 西安近代化学研究所 Double-pulse-load loading test device
CN204302102U (en) * 2014-12-16 2015-04-29 中国人民解放军军械工程学院 Propellant powder determiner for compression strength
CN105300875A (en) * 2015-10-23 2016-02-03 西安近代化学研究所 Explosive loading continuous multi-pulse-load loading experiment device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101216478A (en) * 2007-12-28 2008-07-09 中北大学 Explosive friction sensitivity instrument
US20120047989A1 (en) * 2010-09-01 2012-03-01 Orbital Sciences Corporation Shock simulation method and apparatus
CN104237117A (en) * 2014-09-18 2014-12-24 西安近代化学研究所 Grain friction test device under low-speed drop hammer impact loading
CN104266962A (en) * 2014-10-15 2015-01-07 中国人民解放军国防科学技术大学 Device for testing safety performance of explosive under impact and friction conditions
CN204302102U (en) * 2014-12-16 2015-04-29 中国人民解放军军械工程学院 Propellant powder determiner for compression strength
CN104535439A (en) * 2015-01-09 2015-04-22 西安近代化学研究所 Double-pulse-load loading test device
CN105300875A (en) * 2015-10-23 2016-02-03 西安近代化学研究所 Explosive loading continuous multi-pulse-load loading experiment device

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
何超 等: "冲击加载下分步压装装药抗过载响应特性的数值模拟与实验", 《火炸药学报》 *
屈可朋 等: "RDX基PBX炸药在不同应力率下的撞击安全性", 《火炸药学报》 *
屈可朋 等: "炸药装药侵彻安全性模拟实验方法研究", 《火工品》 *
席鹏 等: "12.7mm弹丸侵彻炸药的数值计算与试验研究", 《四川兵工学报》 *
李亮亮 等: "炸药装药在不同应变率响应条件下的安全性研究进展", 《火炸药学报》 *

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106989986B (en) * 2017-03-29 2019-06-28 西安近代化学研究所 Explosive loading responds stress test sensor locator
CN106989986A (en) * 2017-03-29 2017-07-28 西安近代化学研究所 Explosive loading responds stress test sensor locator
CN107563052B (en) * 2017-08-31 2020-12-15 西安近代化学研究所 Simulation design method for penetration type explosive loading composite structure
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
CN108387335A (en) * 2018-02-09 2018-08-10 西安近代化学研究所 A kind of experimental rig measuring powder charge thermal expansion force
CN108982050A (en) * 2018-08-28 2018-12-11 西安近代化学研究所 Bath scaled model experimental device and method are fallen in a kind of powder charge
CN108982050B (en) * 2018-08-28 2020-05-05 西安近代化学研究所 Explosive charge falling model experiment device and method
CN109271708A (en) * 2018-09-19 2019-01-25 西安近代化学研究所 A kind of recombinant type explosive loading head construction optimum design method
CN109271708B (en) * 2018-09-19 2022-10-25 西安近代化学研究所 Optimization design method for structure of heavy explosive loading head
CN109443447A (en) * 2018-12-20 2019-03-08 中国工程物理研究院化工材料研究所 The hot Combined Loading control system of explosive power
CN109975108A (en) * 2019-04-23 2019-07-05 中国人民解放军陆军工程大学 A kind of sandwich Waveform forming device for the test of explosively loading Hopkinson bar
CN110108744A (en) * 2019-05-08 2019-08-09 西安近代化学研究所 A kind of classification of explosives method based on thermal acceleration degradation
CN110108744B (en) * 2019-05-08 2021-10-08 西安近代化学研究所 Explosive classification method based on thermal accelerated aging test
CN110530787B (en) * 2019-09-05 2022-05-24 西安近代化学研究所 Explosive stress testing device based on multiple pulse tests
CN110530787A (en) * 2019-09-05 2019-12-03 西安近代化学研究所 A kind of explosive stress test device based on multiple pulses test
CN112611782A (en) * 2020-11-30 2021-04-06 北京理工大学 Dynamic manometric thermal analysis method for low-melting-point and volatile energetic material
CN113030425A (en) * 2021-02-01 2021-06-25 中北大学 Explosive stability evaluation experimental device for equivalently simulating penetration of projectile into steel target
CN113030425B (en) * 2021-02-01 2023-01-03 中北大学 Explosive stability evaluation experimental device for equivalent simulation projectile penetration steel target

Also Published As

Publication number Publication date
CN106018464B (en) 2018-10-12

Similar Documents

Publication Publication Date Title
CN106018464A (en) Explosive loading and penetrating stability evaluation method based on equivalent model experiment
Rosenberg et al. Terminal ballistics
CN108362584B (en) Shock tube experimental device for composite loading of impact explosion in water
CN106226176B (en) Underwater explosion loading acts on lower rock dynamic mechanical test method
CN104568613B (en) A kind of vessel cabin detonation inside Structure Damage evaluation method based on equivalent scale model
CN105527176B (en) Experimental rig for jointed rock mass failure mechanism in deep under impact load
CN104568612B (en) A kind of vessel cabin detonation inside effect contracting is than equivalent test model
CN110108571A (en) A kind of experimental rig and test method of coupled static-dynamic loadingi
CN104931334B (en) A kind of based on blast self-destruction plus discharge mechanism
Rosenberg et al. A numerical study of the cavity expansion process and its application to long-rod penetration mechanics
CN105841559A (en) Novel air cannon equivalent loading test device
CN108982245B (en) Projectile charging impact shear simulation test device
Deng et al. Experimental and numerical study on the ballistic resistance of 6061-T651 aluminum alloy thin plates struck by different nose shapes of projectiles
CN105300875A (en) Explosive loading continuous multi-pulse-load loading experiment device
CN205784908U (en) A kind of air artillery equivalent loading test device for hanging
Lu et al. Study of damage to a high concrete dam subjected to underwater shock waves
Juncheng et al. Investigation on the application of taylor impact test to high-g loading
CN104182565B (en) Design method of secondary light-gas gun test model
McShane et al. A laboratory-scale buried charge simulator
Grujicic et al. A Combined Multi‐Material Euler/Lagrange Computational Analysis of Blast Loading Resulting from Detonation of Buried Landmines
CN105606469A (en) Method for qualitative characterization of warhead penetrating property
CN103673789B (en) Method for determining unlocking critical charge quantity of separation nut
Shi et al. Investigation on penetration model of shaped charge jet in water
Chen et al. Ballistic resistance analysis of double-layered composite material structures
CN108981502B (en) Simulation test bench for high-speed friction force of inner trajectory

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20181012

CF01 Termination of patent right due to non-payment of annual fee