CN110006299A - A kind of appraisal procedure of body high speed Penetrating Concrete class material critical condition - Google Patents
A kind of appraisal procedure of body high speed Penetrating Concrete class material critical condition Download PDFInfo
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- CN110006299A CN110006299A CN201910284288.2A CN201910284288A CN110006299A CN 110006299 A CN110006299 A CN 110006299A CN 201910284288 A CN201910284288 A CN 201910284288A CN 110006299 A CN110006299 A CN 110006299A
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- high speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B35/00—Testing or checking of ammunition
- F42B35/02—Gauging, sorting, trimming or shortening cartridges or missiles
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The present invention relates to a kind of appraisal procedures of body high speed Penetrating Concrete class material critical condition, comprising the following steps: step S1, acquires the associated static data of body and target plate；Step S2, the shape function N of body is calculated；Step S3, critical condition when body high speed Penetrating Concrete class material is calculated, comprising: limit Penetration Depth Xm and corresponding limit velocity Vm；Step S4, it is assessed according to Penetration Ability of the critical condition to body high speed Penetrating Concrete class material, appraisal procedure is as follows: setting body initial velocity as V0, the final Penetration Depth of body is X0, work as V0When < Vm, X0< Xm, the final Penetration Depth X of body0With V0Increase and increase；Work as V0When=Vm, X0=Xm；Work as V0When > Vm, X0< Xm, the final Penetration Depth X of body0With V0Increase and reduce.The present invention may be directly applied to estimating for projectile penetrating ability, and the research and development and screening bullet design for body warhead have important directive significance.
Description
Technical field
The present invention relates to the assessment of projectile penetrating performance, specifically a kind of body high speed Penetrating Concrete class material critical item
The appraisal procedure of part.
Background technique
On future battlefield, the use of high speed Penetration weapon, which constitutes buried underground hard-to-hit target, to be seriously threatened, simultaneously
The raising for hitting ground speed proposes tightened up requirement to warhead design.For warhead design, it is desirable that body is in penetration
It does not deform in the process or deformation as few as possible is to keep structural intergrity, theoretical model is often assumed to be rigid body, but true
Live shell body increases with Penetration Speed, and mass loss constantly aggravates, and can no longer regard rigid body as, mass loss how much with bullet/target
Material property it is related, quality corrodes the capitiform that will change body, and then influences the penetration property of body.Shell body quality corroded
Journey can significantly affect projectile penetrating performance, and body is caused to destroy or fail.For hiding and playing structure design, answered in Penetration
Warhead deform as far as possible even to destroy to make warhead Penetration Depth be obviously shortened than expected, warhead function
Some lost even completely loses.Therefore, very necessary to the understanding of the high speed penetration mechanism of body, carry out body to concrete
The assessment of the high speed penetration critical condition of class hard goal is to warhead development and all great meaning of current design manual of protective structures.
Existing research shows to can be considered rigid to concrete class target Qinzhou harbor body in conventional speeds range (≤800m/s)
Body, with the increase of Penetration Speed, penetration mechanism is gradually changed from rigid body penetration to half rigid body penetration, and body cannot merely be made
For rigid body processing, with the further promotion of speed, the mechanical behavior of body can be handled by fluid.Half rigid body penetration machine of body
Reason is more more complex than rigid body and fluid penetration mechanism, and completed test and research conclusion are invaded mainly for metallic target at present
It is thorough, is still had for the high speed penetration of concrete material, such as above-mentioned different penetrations many problem of needing further further investigation
The critical speed in stage, the limit velocity corresponding to limit Penetration Depth, body erosion and mechanical mechanism of deformation (destruction) etc..
Currently, the purpose of high speed penetration research is primarily to estimate the Penetration Ability of body, the present inventor is from this angle
Degree sets out, on the basis of test, by largely calculating and verifying, to influence body limit Penetration Depth and limit velocity because
Element has carried out reasonable analysis, in consideration of it, can set body reach capacity in high speed penetration Penetration Depth and the corresponding limit speed
The condition of degree is critical condition, makes reasonable assessment to the Penetration Ability of body.
Summary of the invention
The purpose of the present invention is to propose to a kind of appraisal procedures of body high speed Penetrating Concrete class material critical condition, use
This method can accurately calculate body high speed Penetrating Concrete in the relevant parameter of known body and coagulation great soil group target body
Critical value when class material, to make assessment to the Penetration Ability of body.
To achieve the above object, the invention adopts the following technical scheme:
A kind of appraisal procedure of body high speed Penetrating Concrete class material critical condition, comprising the following steps:
Step S1, the associated static data of body and target plate are acquired, comprising: body density ρp, body intensity σp, body is hard
Spend Hp, target body density pt, strength of target rmor σt, target body aggregate hardness Ht, the form factor N* of body, Shell body quality M, diameter of the projectile body
D；
Step S2, the shape function N of body is calculated according to the following formula:
Step S3, limit Penetration Depth Xm and pole when using following equation calculating body high speed Penetrating Concrete class material
Speed limit degree Vm:
Step S4, it is assessed according to Penetration Ability of the above-mentioned critical condition to body high speed Penetrating Concrete class material,
Appraisal procedure is as follows:
Body initial velocity is set as V0, the final Penetration Depth of body is X0,
Work as V0When < Vm, X0< Xm, the final Penetration Depth X of body0With V0Increase and increase；
Work as V0When=Vm, X0=Xm；
Work as V0When > Vm, X0< Xm, the final Penetration Depth X of body0With V0Increase and reduce.
Beneficial effects of the present invention: the appraisal procedure of critical condition provided by the present invention belongs to a kind of theoretic pre-
Method is estimated, when the relevant parameter of body and target body it is known that being not required to may be directly applied to the final Penetration Depth of body through overtesting
Estimate, for body design and hide bullet design have important directive significance.
Detailed description of the invention
Fig. 1 is the depth and speed curve diagram of first test in embodiment.
Fig. 2 is the depth and speed curve diagram of second batch test in embodiment.
Fig. 3 is the depth and speed curve diagram of third batch test in embodiment.
In figure, shape symbol is test data point, and lines are test data fitting curve.
Specific embodiment
The present invention is described in further detail combined with specific embodiments below.
A kind of appraisal procedure of body high speed Penetrating Concrete class material critical condition, comprising the following steps:
Step S1, the associated static data of body and target plate are acquired, comprising: body density ρp, body intensity σp, body is hard
Spend Hp, target body density pt, strength of target rmor σt, target body aggregate hardness Ht, the form factor N* of body, Shell body quality M, diameter of the projectile body
D；
Step S2, the shape function N of body is calculated according to the following formula:
Step S3, limit Penetration Depth Xm and pole when using following equation calculating body high speed Penetrating Concrete class material
Speed limit degree Vm:
Step S4, it is assessed according to Penetration Ability of the above-mentioned critical condition to body high speed Penetrating Concrete class material,
Appraisal procedure is as follows:
Body initial velocity is set as V0, the final Penetration Depth of body is X0,
Work as V0When < Vm, X0< Xm, the final Penetration Depth X of body0With V0Increase and increase；
Work as V0When=Vm, X0=Xm；
Work as V0When > Vm, X0< Xm, the final Penetration Depth X of body0With V0Increase and reduce.
In order to verify the accuracy of this appraisal procedure, inventor has carried out test of many times, below with regard to test process carry out
Simple declaration:
1, pilot system includes transmitting, recycling and three parts of test macro, using Φ 35mm high velocity ballistic big gun as hair
Jet device, measures missile velocity using light electric tachometer, shoots projectile flight attitude using high-speed camera and X-ray machine.
2, airframe material includes totally 6 kinds of 20# steel, 45# steel, 60Si2Mn, 35CrMnSi, TC4,40CrNiMo, removes 20# steel
Outside, other materials are all through Overheating Treatment.Complete play slenderness ratio (L/D) is 10:1, and head shape is divided to tack and two kinds oval, wherein ovum
Its head slenderness ratio (Ln/D) of forming head portion is divided into 3:1 and two kinds of 2:1 again.
3, test target body is Φ 1000mm plain concrete drum target, target body external application 5mm thick steel plate banding, target diameter and caliber it
Than being much larger than 30, the influence on target body boundary can be ignored[8], while it is contemplated that body penetration trajectory in target variation, guarantee
Body will not fly out target body from side.Target body length is determined according to projectile penetrating ability, it is ensured that shock collapse does not occur in the target body back side.
According to test requirements document, the concrete target body of 4 kinds of labels (C30, C45, C60 and C80MPa) has been constructed altogether.
4, test result is as follows:
1st batch test: airframe material is consistent with size, material 60Si2Mn, head be it is oval, head slenderness ratio be 2:
1, investigate influence of the variation of Penetration Speed, concrete target body intensity to penetration weapon.For the concrete target of 4 kinds of varying strengths
Body, has carried out 4 groups of tests, every group 5 hair, and missile velocity range is 800m/s~1500m/s.This batch of test is set forth in Fig. 1
The test result of Penetration Depth and Shell body quality loss.
2nd batch test: shell caliber is consistent, head be it is oval, head slenderness ratio be 2:1, investigate airframe material, penetration speed
Influence of the variation of degree, concrete target body intensity to penetration weapon.In order to provide limit velocity by test, according to above
The 6 kinds of airframe materials referred to, for the concrete target body of 4 kinds of varying strengths, the corresponding the selection of material intensity of the high target body of intensity is high
Body tested, every group of test number (TN) differs, missile velocity range be 800m/s~1450m/s.This is set forth in Fig. 2
Criticize the test result of test Penetration Depth and Shell body quality loss.
3rd batch of test: airframe material is consistent with concrete target body intensity, airframe material 60Si2Mn, strong concrete scale
Number it is C45, investigates influence of the variation for playing shape and Penetration Speed to penetration weapon, this batch of test adopts two kinds of bullet shapes: tack
The oval bullet that bullet and head slenderness ratio are 3:1, missile velocity range are 800m/s~1450m/s.This batch of examination is set forth in Fig. 3
Test Penetration Depth and Shell body quality loss test result, for the ease of comparing, in Fig. 3 by first test in second group of examination
(play material be 60Si2Mn, the oval bullet penetration C45 concrete that head slenderness ratio is 2:1) result is tested to draw together.
By Fig. 1, Fig. 2, Fig. 3 it is found that a kind of body high speed Penetrating Concrete class material critical proposed according to the present invention
The appraisal procedure of condition, assessment result match with experimental test result.
Part not in the detailed description of the invention is the prior art.
Claims (1)
1. a kind of appraisal procedure of body high speed Penetrating Concrete class material critical condition, it is characterized in that: the following steps are included:
Step S1, the associated static data of body and target plate are acquired, comprising: body density ρp, body intensity σp, body hardness Hp,
Target body density pt, strength of target rmor σt, target body aggregate hardness Ht, the form factor N* of body, Shell body quality M, diameter of the projectile body D；
Step S2, the shape function N of body is calculated according to the following formula,
Step S3, critical condition when body high speed Penetrating Concrete class material is calculated using following equation, comprising: limit penetration
Depth Xm and limit velocity Vm:
Step S4, body high speed Penetrating Concrete class material Penetration Ability is assessed according to above-mentioned critical condition, assessment side
Method is as follows:
Body initial velocity is set as V0, the final Penetration Depth of body is X0,
Work as V0When < Vm, X0< Xm, the final Penetration Depth X of body0With V0Increase and increase；
Work as V0When=Vm, X0=Xm；
Work as V0When > Vm, X0< Xm, the final Penetration Depth X of body0With V0Increase and reduce.
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Cited By (6)
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| CN110728070A (en) * | 2019-10-23 | 2020-01-24 | 北京理工大学 | Projectile erosion prediction method by coupling melting and cutting mechanisms |
| CN110765409A (en) * | 2019-10-23 | 2020-02-07 | 北京理工大学 | Method for predicting damage behavior of projectile penetrating through reinforced concrete target plate |
| CN111666679A (en) * | 2020-06-03 | 2020-09-15 | 西安近代化学研究所 | Method for quantitatively representing speed attenuation degree of long rod penetration process |
| CN112084659A (en) * | 2020-09-09 | 2020-12-15 | 北京理工大学 | Method for predicting penetration performance of projectile high-speed impact concrete considering erosion effect |
| CN114065403A (en) * | 2021-12-02 | 2022-02-18 | 中国船舶科学研究中心 | High-speed projectile body model evaluation method based on penetration ship multilayer structure target plate |
| CN114877761A (en) * | 2021-09-26 | 2022-08-09 | 中国人民解放军63921部队 | Deep-cut inert projectile target field flight test method based on natural rock environment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110728070A (en) * | 2019-10-23 | 2020-01-24 | 北京理工大学 | Projectile erosion prediction method by coupling melting and cutting mechanisms |
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| CN111666679A (en) * | 2020-06-03 | 2020-09-15 | 西安近代化学研究所 | Method for quantitatively representing speed attenuation degree of long rod penetration process |
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| CN112084659B (en) * | 2020-09-09 | 2022-09-09 | 北京理工大学 | Method for predicting penetration performance of projectile high-speed impact concrete considering erosion effect |
| CN114877761A (en) * | 2021-09-26 | 2022-08-09 | 中国人民解放军63921部队 | Deep-cut inert projectile target field flight test method based on natural rock environment |
| CN114877761B (en) * | 2021-09-26 | 2023-11-07 | 中国人民解放军63921部队 | Deep-invasion inert bomb range flight test method based on natural rock environment |
| CN114065403A (en) * | 2021-12-02 | 2022-02-18 | 中国船舶科学研究中心 | High-speed projectile body model evaluation method based on penetration ship multilayer structure target plate |
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