CN110208180A - A kind of multiple impact load testing machine - Google Patents
A kind of multiple impact load testing machine Download PDFInfo
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- CN110208180A CN110208180A CN201910506010.5A CN201910506010A CN110208180A CN 110208180 A CN110208180 A CN 110208180A CN 201910506010 A CN201910506010 A CN 201910506010A CN 110208180 A CN110208180 A CN 110208180A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
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Abstract
This application discloses a kind of multiple impact load testing machines, basic principle is once to accelerate multiple bullets using electromagnetic principle, utilize the time of sensor record projectile impact explosive, Parameters variation course curve, controller calculates control parameter according to measured data, the bullet for completing shock task is successively sucked bottom by the electromagnet by being placed on target plate bottom, it is interfered with each other caused by avoiding bullet from springing back, realizes multiple impact load.The application has the advantage versatile, low in cost, vulnerable part is easy to change, can fill up blank of the explosive multiple impact igniting without experimental rig and method in Penetration, can provide technical guarantee for the overload-resistant Explosive development of penetration class.
Description
Technical field
The application belongs to explosive performance parameter experimental technique field, is related to a kind of multiple impact load testing machine, main
It is used to study the crash safety of explosive, technical support can be provided for the development of overload-resistant explosive.
Background technique
Overload-resistant explosive is a kind of strong mechanical performance explosive designed for penetration class ammunition, such as the shell of 155mm bore
Powder charge, deep penetration guided missile etc., research shows that the stress that explosive loading is subject in ammunition Penetration is typically not greater than 1GPa, it should
Numerical value also reaches far away the Impact Initiation threshold value (about 7GPa) of explosive, therefore igniting occurs in explosive Penetration and usually sums up
For non-percussion ignition mechanism, motion state of the non-percussion ignition mechanism and explosive of explosive in Penetration is close in Penetration
The case where cut phase is closed, and numerical simulation result is shown for deep penetration, there is multiple back and forth movement in explosive, therefore inside housings
The igniting of explosive non-percussion may be final result caused by multiple repetitious stimulation, and researcher mainly utilizes load of dropping hammer at present
Stress of the mode Dynamite in Penetration, the Xu Zhifeng device that is based on dropping hammer greatly establishes powder charge emission security
Simulation loading experimental method；Jiang Xibo et al. attempts to be acted on lower damage by Repeated Impact Load with double gap test research explosives
Characteristic, but the limitation for the method that is put to the test, there are following two aspect is insufficient for existing test method:
(1) it drops hammer greatly the case where can not simulating repeated loading, equivalent simulation only is made to the state of single load, therefore
Existing test method is unable to satisfy Research Requirements, and there are technological gaps；
(2) double gap tests are difficult to realize multiple non-percussion load, are not suitable for studying the case where stress is lower than 1GPa.
Overload-resistant explosive is a kind of explosive that China is largely equipped, and overload-resistant safety is one of its core index, at present
China is not able to carry out the experimental rig and method of multiple non-percussion load, can not be to the actual loading in explosive Penetration
Situation makes accurate simulation, hinders the flow of research of overload-resistant explosive, therefore is badly in need of a kind of multiple impact load testing machine,
It fills the domestic gaps.
Summary of the invention
For defect existing for existing experimental rig and method or deficiency, the application provides a kind of multiple impact load examination
Experiment device, basic principle is once to accelerate multiple bullets using electromagnetic principle, by being placed on the electromagnet of target plate bottom successively
The bullet for completing shock task is sucked into bottom, is interfered with each other caused by avoiding bullet from springing back, realizes multiple impact load.This Shen
There please be advantage versatile, low in cost, that vulnerable part is easy to change, explosive non-percussion in Penetration can be filled up and lighted a fire
The blank of method without experimental rig can provide technical guarantee for the overload-resistant Explosive development of penetration class.
In order to achieve the above objectives, the application uses a kind of following technical solution: multiple impact load testing machine,
It is characterized by: described device includes guide rail cathode 1, armature A2, bullet A3, armature B4, bullet B5, guide rail anode 6, Laser Measuring
Fast instrument 7, electromagnet 8, block 9, foil gauge 10, sample 11, pedestal 12, sensors A 13, sensor B14, sensor C15, data
Line 16 and controller 17, the guide rail cathode 1 and guide rail anode 6 are conductive metal, and the guide rail cathode 1 and guide rail anode 6 are long
Degree is 6 times~10 times of spacing between the two, can ensure that bullet A3 and bullet B5 is obtained in this way and most preferably go out thorax speed, the bullet
The shape and material of A3 and bullet B5 can need freely to set according to research, the armature A2, bullet A3, armature B4, bullet
B5, laser velocimeter 7, electromagnet 8, foil gauge 10, sample 11 are arranged successively in same level, the armature A2 and armature
B4 is spill conductive metal, and the armature A2 and armature B4 are between the guide rail cathode 1 and guide rail anode 6, the armature
In tandem, the armature A2 and armature B4 and the guide rail cathode 1 and positive 6 contact frees of guide rail are described by A2 and armature B4
Bullet A3 is bonded on the outer surface parallel with 1 cross section of guide rail cathode the armature A2, and the bullet B5 is bonded in institute
It states on the outer surface parallel with 1 cross section of guide rail cathode armature B4, the laser velocimeter 7 is by transmitting terminal and receiving end group
At the transmitting terminal of the laser velocimeter 7 and receiving end are separately fixed at the guide rail cathode 1 and positive 6 ends of guide rail, described
Electromagnet 8 and block 9 are fixed on immediately below the laser velocimeter 7, and the block 9 is nylon material, for recycling bullet, institute
It states block 9 and is located at 8 top of electromagnet, the block the distance between 9 and electromagnet 8 are being equal to guide rail cathode 1 and guide rail just
Spacing between pole 6, the pedestal 12 are fixed on ground, and pedestal 12 is reinforced concrete structure, and pedestal 12 is transported perpendicular to bullet B5
It moves and is respectively provided with a groove on two end faces in direction, along cross section equidistantly distributed three between 12 two grooves of the pedestal
A through-hole, the sensors A 13, sensor B14, sensor C15 are separately mounted on above three through-hole, and sensors A 13 passes
The type of the sensitive area abutting sample 11 of sensor B14, sensor C15, sensor can need freely set according to research, described
Groove of the pedestal 12 close to the side bullet B5 is integrally in cylindrical body boss structure, and the sample 11 fills up the pedestal 12 by short round
The groove of the side ball B5, the foil gauge 10 are pasted onto the center position of 11 Free Surface of sample, the foil gauge 10
On the central axes of the bullet A3, armature B and bullet B5, described 16 one end of data line connects the foil gauge 10, sensing
Device A13, sensor B14, sensor C15,16 other end of data line connect the controller 17；
Method therefor is measured using the device, is included the following steps:
Step 1: control environment temperature is not more than 30 DEG C, relative air humidity is not more than 50%；
Step 2: the armature A2, bullet A3, armature B4, bullet B5 are successively placed into position, sample 11 is filled up described
The pit of pedestal 12, the standby preparation of the electromagnet 8；
Step 3: connecting intense pulsed power supply, pulse current passes through guide rail anode 6, armature A2 and armature B4, and outflow guide rail is negative
Pole 1 returns to pulse power cathode, according to formula F=0.5L*I2Thrust is calculated, wherein F pushes away for what armature A2 and armature B4 was subject to
Power, L*For inductance gradient, I is current strength, and armature A2 and armature B4 is accelerated under thrust, while armature A2 and armature
B4 drives the bullet A3 and bullet B5 successively to accelerate respectively；
Step 4: record sensors A 13, sensor B14, sensor C15 receive the initial time t of signala、tb、tc,
Electromagnet 8 is taken to start time t=max (ta,tb,tc), electromagnet 8 is precisely controlled switch time, will reach at first and complete to hit
Bullet B5 immediately wick into 12 bottom of pedestal in the rebound stage, bullet A3 and bullet B5 successively hit sample 11, realize multiple bullets
The glitch-free multiple impact test of ball.
Compared with prior art, the invention has the following advantages that
(1) it realizes primary test and repeatedly noiseless load is made to sample；
(2) simulation for realizing explosive non-percussion ignition process stress in explosive Penetration, fills the domestic gaps.
Detailed description of the invention
Invention is further described in detail with reference to the accompanying drawings and detailed description.
Fig. 1 is experimental rig sectional view, 1- guide rail cathode, 2- armature A, 3- bullet A, 4- armature B, 5- bullet B, 6- guide rail
Anode, 7- laser velocimeter, 8- electromagnet, 9- block, 10- foil gauge, 11- sample, 12- pedestal, 13- sensors A, 14- are passed
Sensor B, 15- sensor C, 16- data line and 17- controller.
Specific embodiment
The present invention is described in more detail with reference to the accompanying drawings and embodiments, but embodiment is not intended to limit the invention:
Embodiment 1
In the present embodiment, multiple impact load testing machine is designed, fire trial hit twice to B explosive, two
Projectile impact interval time 200ms, projectile impact speed 100m/s.
A kind of multiple impact load testing machine, it is characterised in that: described device includes guide rail cathode 1, armature A2, bullet
A3, armature B4, bullet B5, guide rail anode 6, laser velocimeter 7, electromagnet 8, block 9, foil gauge 10, sample 11, pedestal 12,
Temperature sensor A13, pressure sensor B14, particle velocity sensor C15, data line 16 and controller 17, the guide rail cathode
1 and guide rail anode 6 be conductive metal, positive 6 length of the guide rail cathode 1 and guide rail are 6 times~10 times of spacing between the two, this
Sample can ensure that bullet A3 and bullet B5 is obtained and go out thorax speed, the bullet A3 and bullet B5 most preferably for the circle of ingot iron material
Cylinder, the armature A2, bullet A3, armature B4, bullet B5, laser velocimeter 7, electromagnet 8, foil gauge 10, sample 11 are same
It is arranged successively on one horizontal plane, the armature A2 and armature B4 are spill conductive metal, and the armature A2 and armature B4 are located at institute
State between guide rail cathode 1 and guide rail anode 6, the armature A2 and armature B4 in tandem, the armature A2 and armature B4 and institute
Guide rail cathode 1 and positive 6 contact frees of guide rail are stated, the bullet A3 is bonded in the armature A2 and the guide rail cathode 1 is transversal
On the parallel outer surface in face, the bullet B5 is bonded in the outer surface parallel with 1 cross section of guide rail cathode the armature B4
On, the laser velocimeter 7 is made of transmitting terminal and receiving end, and the transmitting terminal of the laser velocimeter 7 and receiving end are solid respectively
It is scheduled on the guide rail cathode 1 and positive 6 ends of guide rail, under the electromagnet 8 and block 9 are fixed on the laser velocimeter 7 just
Side, the block 9 is nylon material, and for recycling bullet, the block 9 is located at 8 top of electromagnet, 9 Hes of the block
The distance between electromagnet 8 is equal to spacing, the pedestal 12 between guide rail cathode 1 and guide rail anode 6 and is fixed on ground, pedestal 12
For reinforced concrete structure, pedestal 12 is perpendicular to being respectively provided with a groove, the base on two end faces of the bullet B5 direction of motion
Along three through-holes of cross section equidistantly distributed, the sensors A 13, sensor B14, sensor between 12 two grooves of seat
C15 is separately mounted on above three through-hole, the sensitive area abutting sample 11 of sensors A 13, sensor B14, sensor C15,
Groove of the pedestal 12 close to the side bullet B5 is integrally in cylindrical body boss structure, and the sample 11 fills up the pedestal 12 and leans on
The groove of the side short round ball B5, the 11 maximum gauge 0.55m of sample, the foil gauge 10 are pasted onto 11 Free Surface of sample
The center position in face, the foil gauge 10 are located on the central axes of the bullet A3, armature B and bullet B5, the data line
16 one end connect the foil gauge 10, temperature sensor A13, pressure sensor B14, particle velocity sensor C15, the data
16 other end of line connects the controller 17；
Method therefor is measured using the device, is included the following steps:
Step 1: control environment temperature is not more than 30 DEG C, relative air humidity is not more than 50%；
Step 2: the armature A2, bullet A3, armature B4, bullet B5 are successively placed into position, sample 11 is filled up described
The pit of pedestal 12, the standby preparation of the electromagnet 8；
Step 3: connecting intense pulsed power supply, pulse current passes through guide rail anode 6, armature A2 and armature B4, and outflow guide rail is negative
Pole 1 returns to pulse power cathode, according to formula F=0.5L*I2Thrust is calculated, wherein F pushes away for what armature A2 and armature B4 was subject to
Power, L*For inductance gradient, I is current strength, and armature A2 and armature B4 is accelerated under thrust, while armature A2 and armature
B4 drives the bullet A3 and bullet B5 successively to accelerate respectively；
Step 4: record temperature sensor A13, pressure sensor B14, particle velocity sensor C15 receive signal
Initial time ta、tb、tc, electromagnet 8 is taken to start time t=max (ta,tb,tc)=tb=1.2ms, electromagnet 8 are precisely controlled out
The time is closed, will reach at first and the bullet B5 for completing to hit immediately wicks into 12 bottom of pedestal, bullet A3 and bullet in the rebound stage
B5 successively hits sample 11, realizes the glitch-free multiple impact test of multiple bullets.
Embodiment 2
In the present embodiment, multiple impact load testing machine is designed, desensitizing RDX explosive is carried out to hit igniting examination twice
It tests, two projectile impact interval time 10ms, projectile impact speed 180m/s.
A kind of multiple impact load testing machine, it is characterised in that: described device includes guide rail cathode 1, armature A2, bullet
A3, armature B4, bullet B5, guide rail anode 6, laser velocimeter 7, electromagnet 8, block 9, foil gauge 10, sample 11, pedestal 12,
Pressure sensor A13, pressure sensor B14, pressure sensor C15, data line 16 and controller 17,1 He of guide rail cathode
Guide rail anode 6 is conductive metal, and the guide rail cathode 1 and positive 6 length of guide rail are 6 times~10 times of spacing between the two, in this way
It can ensure that bullet A3 and bullet B5 is obtained and most preferably go out thorax speed, the bullet A3 and bullet B5 steel cylindrical body, the armature
A2, bullet A3, armature B4, bullet B5, laser velocimeter 7, electromagnet 8, foil gauge 10, sample 11 in same level successively
Arrangement, the armature A2 and armature B4 are spill conductive metal, and the armature A2 and armature B4 are located at the guide rail cathode 1 and lead
Between rail anode 6, the armature A2 and armature B4 in tandem, the armature A2 and armature B4 and the guide rail cathode 1 and are led
Rail 6 contact frees of anode, the bullet A3 are bonded in the outer surface parallel with 1 cross section of guide rail cathode the armature A2
On, the bullet B5 is bonded on the outer surface parallel with 1 cross section of guide rail cathode the armature B4, the laser velocimeter
Instrument 7 is made of transmitting terminal and receiving end, and the transmitting terminal of the laser velocimeter 7 and receiving end are separately fixed at the guide rail cathode
1 and positive 6 ends of guide rail, the electromagnet 8 and block 9 be fixed on immediately below the laser velocimeter 7, the block 9 is Buddhist nun
Imperial material, for recycling bullet, the block 9 is located at 8 top of electromagnet, the block the distance between 9 and electromagnet 8
Equal to spacing between guide rail cathode 1 and guide rail anode 6, the pedestal 12 is fixed on ground, and pedestal 12 is reinforced concrete structure,
Pedestal 12 is perpendicular to being respectively provided with a groove, edge between 12 two grooves of the pedestal on two end faces of the bullet B5 direction of motion
Three through-holes of cross section equidistantly distributed, the sensors A 13, sensor B14, sensor C15 be separately mounted to above-mentioned three
On a through-hole, the sensitive area abutting sample 11 of sensors A 13, sensor B14, sensor C15, the type of sensor can basis
Research needs freely to set, and groove of the pedestal 12 close to the side bullet B5 is integrally in cylindrical body boss structure, the sample
11 fill up the pedestal 12 close to the groove of the side bullet B5, the 11 maximum gauge 0.42m of sample, the stickup of foil gauge 10
In the center position of 11 Free Surface of sample, the foil gauge 10 is located in the bullet A3, armature B and bullet B5
On axis, described 16 one end of data line connects the foil gauge 10, pressure sensor A13, pressure sensor B14, pressure sensing
Device C15,16 other end of data line connect the controller 17；
Method therefor is measured using the device, is included the following steps:
Step 1: control environment temperature is not more than 30 DEG C, relative air humidity is not more than 50%；
Step 2: the armature A2, bullet A3, armature B4, bullet B5 are successively placed into position, sample 11 is filled up described
The pit of pedestal 12, the standby preparation of the electromagnet 8；
Step 3: connecting intense pulsed power supply, pulse current passes through guide rail anode 6, armature A2 and armature B4, and outflow guide rail is negative
Pole 1 returns to pulse power cathode, according to formula F=0.5L*I2Thrust is calculated, wherein F pushes away for what armature A2 and armature B4 was subject to
Power, L*For inductance gradient, I is current strength, and armature A2 and armature B4 is accelerated under thrust, while armature A2 and armature
B4 drives the bullet A3 and bullet B5 successively to accelerate respectively；
Step 4: record pressure sensor A13, pressure sensor B14, pressure sensor C15 receive the initial of signal
Time ta、tb、tc, electromagnet 8 is taken to start time t=max (ta,tb,tc)=tb=0.8ms, when electromagnet 8 is precisely controlled switch
Between, will reach at first and complete hit bullet B5 the rebound stage immediately wick into 12 bottom of pedestal, bullet A3 and bullet B5 according to
Secondary shock sample 11 realizes the glitch-free multiple impact test of multiple bullets.
Claims (1)
1. a kind of multiple impact load testing machine, it is characterised in that: described device includes guide rail cathode (1), armature A (2), bullet
Ball A (3), armature B (4), bullet B (5), guide rail positive (6), laser velocimeter (7), electromagnet (8), block (9), foil gauge
(10), sample (11), pedestal (12), sensors A (13), sensor B (14), sensor C (15), data line (16) and controller
(17), the guide rail cathode (1) and guide rail positive (6) are conductive metal, the guide rail cathode (1) and positive (6) length of guide rail
For 6 times~10 times of spacing between the two, the armature A (2), bullet A (3), armature B (4), bullet B (5), laser velocimeter
(7), electromagnet (8), foil gauge (10), sample (11) are arranged successively in same level, the armature A (2) and armature B
It (4) is spill conductive metal, the armature A (2) and armature B (4) are located between the guide rail cathode (1) and guide rail positive (6),
The armature A (2) and armature B (4) in tandem, the armature A (2) and armature B (4) and the guide rail cathode (1) and guide rail
Positive (6) contact free, the bullet A (3) be bonded in the armature A (2) it is parallel with guide rail cathode (1) cross section outside
On surface, the bullet B (5) is bonded on the armature B (4) outer surface parallel with guide rail cathode (1) cross section, institute
It states laser velocimeter (7) to be made of transmitting terminal and receiving end, the transmitting terminal of the laser velocimeter (7) and receiving end are fixed respectively
In the guide rail cathode (1) and positive (6) end of guide rail, the electromagnet (8) and block (9) are fixed on the laser velocimeter
(7) immediately below, the block (9) is nylon material, and the block (9) is located above the electromagnet (8), the block (9)
The distance between electromagnet (8) is equal to spacing between guide rail cathode (1) and guide rail positive (6), and the pedestal (12) is fixed on
Ground, pedestal (12) are reinforced concrete structure, and pedestal (12) on two end faces of bullet B (5) direction of motion perpendicular to respectively setting
There is a groove, along three through-holes of cross section equidistantly distributed, the sensors A between (12) two grooves of the pedestal
(13), sensor B (14), sensor C (15) are separately mounted on above three through-hole, sensors A (13), sensor B (14),
The sensitive area of sensor C (15) is close to sample (11), and groove of the pedestal (12) close to bullet B (5) side is integrally in cylinder
Body boss structure, the sample (11) fill up the groove of the pedestal (12) close to bullet B (5) side, the foil gauge (10)
Be pasted onto the center position of the sample (11) Free Surface, the foil gauge (10) be located at the bullet A (3), armature B and
On the central axes of bullet B (5), described data line (16) one end connects the foil gauge (10), sensors A (13), sensor B
(14), (15) sensor C, data line (16) other end connect the controller (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910506010.5A CN110208180B (en) | 2019-06-12 | 2019-06-12 | Repeated impact loading test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910506010.5A CN110208180B (en) | 2019-06-12 | 2019-06-12 | Repeated impact loading test device |
Publications (2)
| Publication Number | Publication Date |
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| CN110208180A true CN110208180A (en) | 2019-09-06 |
| CN110208180B CN110208180B (en) | 2022-05-24 |
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| CN201910506010.5A Active CN110208180B (en) | 2019-06-12 | 2019-06-12 | Repeated impact loading test device |
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|---|---|---|---|---|
| CN101694446A (en) * | 2009-10-14 | 2010-04-14 | 上海大学 | Device used for impact test of steel ball at high speed |
| CN201522367U (en) * | 2009-10-16 | 2010-07-07 | 上海大学 | Testing device for anti-impact property of protective mask and glasses |
| CN103712764A (en) * | 2013-11-29 | 2014-04-09 | 上海卫星装备研究所 | Electromagnetic hammer |
| KR20150025753A (en) * | 2013-08-30 | 2015-03-11 | 주식회사 리얼게인 | A remote controllerable impact test apparatus and a impact test system including the same |
| CN106772083A (en) * | 2016-12-26 | 2017-05-31 | 吉林大学 | A kind of automobile-used flat impact experiment apparatus of lithium ion battery high speed water |
| CN206795597U (en) * | 2017-04-24 | 2017-12-26 | 重庆钢铁(集团)有限责任公司 | A kind of steel plate height measuring device |
-
2019
- 2019-06-12 CN CN201910506010.5A patent/CN110208180B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694446A (en) * | 2009-10-14 | 2010-04-14 | 上海大学 | Device used for impact test of steel ball at high speed |
| CN201522367U (en) * | 2009-10-16 | 2010-07-07 | 上海大学 | Testing device for anti-impact property of protective mask and glasses |
| KR20150025753A (en) * | 2013-08-30 | 2015-03-11 | 주식회사 리얼게인 | A remote controllerable impact test apparatus and a impact test system including the same |
| CN103712764A (en) * | 2013-11-29 | 2014-04-09 | 上海卫星装备研究所 | Electromagnetic hammer |
| CN106772083A (en) * | 2016-12-26 | 2017-05-31 | 吉林大学 | A kind of automobile-used flat impact experiment apparatus of lithium ion battery high speed water |
| CN206795597U (en) * | 2017-04-24 | 2017-12-26 | 重庆钢铁(集团)有限责任公司 | A kind of steel plate height measuring device |
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| CN110208180B (en) | 2022-05-24 |
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