CN104483185A - Novel SHPB (split Hopkinson pressure bar) explosive power source device - Google Patents
Novel SHPB (split Hopkinson pressure bar) explosive power source device Download PDFInfo
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- CN104483185A CN104483185A CN201410801697.2A CN201410801697A CN104483185A CN 104483185 A CN104483185 A CN 104483185A CN 201410801697 A CN201410801697 A CN 201410801697A CN 104483185 A CN104483185 A CN 104483185A
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- cylinder cap
- shpb
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Abstract
The invention relates to an SHPB (split Hopkinson pressure bar) explosive power source device which can accurately control impact speed/energy. The SHPB explosive power source device comprises a cylinder body, a cylinder cap, conducting rods and wires, and is characterized in that the cylinder cap is fixed on the cylinder body through bolts; a bullet launch bar is arranged at the center of the cylinder cap and is integrally designed with the cylinder cap; two conical through holes are symmetrically formed in two sides of the bullet launch bar on the cylinder cap, and rubber plugs are assembled in the conical through holes; the conducting rods are inserted on the rubber plugs; one end, located on the outer side of the cylinder body, of each conducting rod is connected with a power control system through the corresponding wire, and the other ends, located in the cylinder body, of the conducting rods are connected to an explosion fuse wire. During working, strong current is introduced to the explosion fuse wire through the wires to fuse and sublime the explosion fuse wire, high-pressure gas is generated to push a bullet to be ejected at a high speed, and explosion energy can be accurate by controlling parameters such as electric current, explosion fuse wire material and length and the like, so that the bullet impact speed is accurately controlled.
Description
Technical field
The present invention relates to a kind of precisely can control impact energy and be easy to operate, use safety for SHPB(Split Hopkinson Bar) device new use for explosive power source.
Background technology
SHPB experimental provision is the ideal tools of the characteristic of research material dynamic loading.SHPB power source is that the power drive of SHPB experimental provision transmitting bar provides mechanism.
Present SHPB power source divides two classes: a class impacts bullet with the impact that the chemical substance combustion explosions such as explosive produce, and produce impact effects, this device benefit is that energy is large, impact strength is strong, and shortcoming is that energy should not control, suddenly big or suddenly small, safety coefficient is very low, contaminated environment.The second does to drive with employing gases at high pressure to clash into, the benefit of this mode is that Impact energy can be able to better be controlled, safety coefficient is high, but the impact energy that shortcoming is to provide is low, maximum material deformation limited speed can be obtained, inconvenient operation, need other adapted high-pressure air source, energy provides and also not easily precisely controls.
Summary of the invention
The present invention, in order to overcome the deficiencies in the prior art, provides a kind of safety, clean, controlled, produces the SHPB explosion power source apparatus of gases at high pressure as power source using the distillation of metal fuse instantaneous explosion.
The present invention is achieved through the following technical solutions:
SHPB new use for explosive power source, comprises cylinder body, cylinder cap, conducting rod, wire.It is characterized in that: described cylinder cap is bolted on cylinder body; The center of cylinder cap is provided with ballistic projections bar, and ballistic projections bar and cylinder cap are integrated design; On described cylinder cap, the symmetria bilateralis of ballistic projections bar has two conical through-holes, equipped rubber stopper in conical through-hole; Described conducting rod is inserted on rubber stopper; Described two conducting rods are positioned at cylinder body lateral ends respectively by wire connecting power control system, and the one end being positioned at cylinder interior is connected on a blast fuse.
Further, described conducting rod be positioned at one end of cylinder interior also can connection metal paper tinsel.
Further, the large mouth of described rubber stopper is positioned at the inner side of cylinder cap, and osculum is positioned at the outside of cylinder cap, and rubber stopper ejects by the gases at high pressure produced after preventing cylinder body inner wire from fusing, and makes cylinder internal gas pressure because of gas leakage decline or injury surrounding people.
Further, the outside surface of described conducting rod is processed with external thread structure, can increase the friction force between rubber stopper and conducting rod, and conducting rod ejects by the gases at high pressure produced after preventing cylinder body inner wire from fusing, and cylinder internal gas pressure is declined or injury surrounding people.
The invention has the beneficial effects as follows: this SHPB new use for explosive power source, utilization blast fuse instantaneous explosion, distillation produce gases at high pressure and do SHPB driving power source.Changing air pressure pressure by controlling initiation current, fuse materials and fuse element length, SHPB can be made to test and obtain higher impact velocity and impact energy control more accurately, and security is high, simple to operate.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Accompanying drawing 1 is the main TV structure schematic diagram of SHPB new use for explosive power source of the present invention;
Accompanying drawing 2 is the plan structure schematic diagram of SHPB new use for explosive power source of the present invention;
Accompanying drawing 3 is the left TV structure schematic diagram of SHPB new use for explosive power source of the present invention;
Accompanying drawing 4 is the power control system schematic diagram be connected with SHPB new use for explosive power source of the present invention;
Structural representation when accompanying drawing 5 is SHPB new use for explosive power source of the present invention use
In figure, 1, cylinder body, 2, cylinder cap, 3, bolt, 4, rubber stopper, 5, conducting rod, 6, blast fuse, 7, wire, , 8, ballistic projections bar, 9, support, 10, new use for explosive device, 11, 220V alternating current, 12, DC high-voltage source, 13, charging module switch, 14, charging module resistance, 15, anti-reverse breakdown diode, 16, discharge capacity, 17, discharge module switch, 18, energy storage inductor, 19, slide rheostat, 20, bullet, 21, incident bar, 22, test specimen, 23, foil gauge, 24, transmission bar, 25, absorbing rod, 26, snubber assembly, 27, dynamic strain indicator, 28, data acquisition system (DAS), 29, computing machine.
Embodiment
Accompanying drawing 1-4 is a kind of specific embodiment of the present invention.This invention SHPB new use for explosive power source, comprise cylinder body 1, cylinder cap 2, two conducting rods 5, wire 7, it is characterized in that: described cylinder cap 2 is fixed on cylinder body 1 by bolt 3, the center of cylinder cap 2 is provided with ballistic projections bar 8, ballistic projections bar 8 and cylinder cap 2 are integrated design, on described cylinder cap 2, the symmetria bilateralis of ballistic projections bar 8 has two conical through-holes, rubber stopper 4 is had in through hole, described conducting rod 5 is inserted on rubber stopper 4, described two conducting rods 5 are positioned at cylinder body 1 lateral ends and are connected to wire 7, wire 7 connects external AC current source, the one end being positioned at cylinder body 1 inside is connected on a blast fuse 6 by wire 7, the large mouth of rubber stopper 4 is positioned at the inboard of cylinder cap 2, osculum is positioned at the outside of cylinder cap 2, conducting rod 5 outside surface is processed with helicitic texture increases friction force between rubber stopper 4 and conducting rod 5, rubber stopper 4 or conducting rod 5 eject by the gases at high pressure produced after preventing cylinder body 1 implode fuse 6 from fusing, hurt surrounding people.
Connect power control system when the present invention uses, this power control system comprises two modules: charging module and discharge module.Charging module mainly comprises DC high-voltage source 12, switch 13, current-limiting resistance 14, anti-reverse breakdown diode 15; Discharge module is made up of discharge capacity 16, gauge tap 17, energy storage inductor 18 and loop slide rheostat 19.The principle of work of system is: DC high-voltage source 12 converts 220V alternating current 11 to high voltage direct current, charges to discharge capacity 16 by anti-reverse breakdown diode 15 and current-limiting resistance 14.When capacitor charging reaches desired voltage, regulate slide rheostat 19 to the resistance of respective strengths electric current, close DC high-voltage source 12, Closed control switch 17, make its conducting, capacitor 16 gives the electric discharge of discharge-induced explosion fuse by energy storage inductor 18, slide rheostat 19.
During use, this device is placed on support 9, turn on-switch 17, solid-state heating, fusing can be experienced after blast fuse 6 passes into strong electric current within the extremely short time, liquid state adds gesture, gasify the processes such as expansion, arc through.Tinsel gasifies rapidly to expand and produces shock wave in medium around, impacts that wave intensity can by point source or line source be instantaneous releases sphere that the subject of knowledge and the object of knowledge produces or Cylindrical Shock intensity calculates.
The present invention is by passing into the electric current of high strength to the metallic explosive fuse 6 being in narrow and small confined space cylinder body 1, the inside blast fuse 6 is distilled instantaneously, produce gases at high pressure, bullet 20 is driven to penetrate with certain speed from ballistic projections bar 8, clash into incident bar 21, a pressure pulse is formed in incident bar, i.e. incident wave (being recorded by the resistance strain gage 23 be attached on incident bar), pressure pulse is forward direction in incident bar, when reaching incident bar and test specimen 22 interface, due to the inertial effect of material for test and transmission bar material, whole test specimen will be compressed.Meanwhile, due to the wave impedance difference between bar 21 and test specimen 22, incident wave is partially reflected as reflection wave returns to incident bar 21, and another part then enters transmission bar 24 through test specimen 22 as transmitted wave.Reflection wave is also recorded by the resistance strain gage 23 be attached on incident bar 21, transmitted wave is recorded by resistance strain gage 23 on transmission bar 24, just can flow to computing machine 29 by dynamic strain indicator 27 and data acquisition system (DAS) 28 by the incident wave recorded, reflection wave and transmitted wave to process, thus obtain the deformation and failure situation of material, obtain the dynamic mechanical data of material.
This device fuse that explodes under the effect of heavy current is able to abundant blast, is knowing that high temperature, the highdensity tinsel gaseous products quality of blast are
, by the projectile quality pushing away one-way movement be
, the velocity of sound in working gas is
time, the discharge-induced explosion impact velocity computing formula proposed by people such as LinHit:
Wherein
,
mthe quality of-gas molecule (atom or ion),
f-depend on the number of molecular freedom,
k-Boltzmann constant, thus the impact velocity (energy) accurately calculating bullet.
This metal fuse explosion power source apparatus compares the size that air pressure and traditional chemical explosive release can accurately control impact energy, and device structure is simple, easy to operate.
Claims (4)
1. a SHPB new use for explosive power source, comprising: cylinder body (1), cylinder cap (2), bolt (3), conducting rod (5), wire (7), is characterized in that: described cylinder cap (2) is fixed on cylinder body (1) by bolt (3); The center of cylinder cap (2) is provided with ballistic projections bar (8), and ballistic projections bar (8) and cylinder cap (2) are integrated design; The symmetria bilateralis of the upper ballistic projections bar (8) of described cylinder cap (2) has two conical through-holes, equipped rubber stopper (4) in through hole, described conducting rod (5) is inserted on rubber stopper (4), described two conducting rods (5) are positioned at cylinder body (1) lateral ends and connect power control system respectively by wire (7), are positioned at the inner one end of cylinder body (1) and are connected on blast fuse (6).
2. SHPB new use for explosive power source according to claim 1, is characterized in that: one end that described conducting rod (5) is positioned at cylinder body (1) inner also can connection metal paper tinsel.
3. SHPB new use for explosive power source according to claim 1, is characterized in that: the large mouth of described rubber stopper (4) is positioned at the inner side of cylinder cap (2), and osculum is positioned at the outside of cylinder cap (2).
4. SHPB new use for explosive power source according to claim 1, the outside surface of described conducting rod (5) is processed with external thread structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410801697.2A CN104483185A (en) | 2014-12-22 | 2014-12-22 | Novel SHPB (split Hopkinson pressure bar) explosive power source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410801697.2A CN104483185A (en) | 2014-12-22 | 2014-12-22 | Novel SHPB (split Hopkinson pressure bar) explosive power source device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104483185A true CN104483185A (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410801697.2A Pending CN104483185A (en) | 2014-12-22 | 2014-12-22 | Novel SHPB (split Hopkinson pressure bar) explosive power source device |
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| CN (1) | CN104483185A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931334A (en) * | 2015-06-01 | 2015-09-23 | 武汉大学 | Loading and unloading device based on explosion self-destruction effect |
| CN108955433A (en) * | 2018-07-06 | 2018-12-07 | 哈尔滨理工大学 | Fuse explosion breaking concrete system and breaking method |
| CN110031174A (en) * | 2019-03-20 | 2019-07-19 | 安徽理工大学 | A kind of striking experiment device based on detonation driven |
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| CN1224479A (en) * | 1996-12-27 | 1999-07-28 | 日立造船株式会社 | Discharge impact breaking device |
| CN102251209A (en) * | 2011-07-13 | 2011-11-23 | 宁波大学 | Electrical explosion spraying method for powder |
| CN103674738A (en) * | 2013-12-13 | 2014-03-26 | 中国人民解放军理工大学 | Experimental device for automatically loading impacts on SHPB (Split Hopkinson Pressure Bar) at high temperature |
| CN104034589A (en) * | 2014-05-16 | 2014-09-10 | 南京理工大学 | Hopkinson pull rod emission device |
| CN104111202A (en) * | 2014-07-22 | 2014-10-22 | 中国科学院上海光学精密机械研究所 | Tube pressure simulation type shock wave detection device |
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2014
- 2014-12-22 CN CN201410801697.2A patent/CN104483185A/en active Pending
Patent Citations (6)
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| CN1224479A (en) * | 1996-12-27 | 1999-07-28 | 日立造船株式会社 | Discharge impact breaking device |
| CN102251209A (en) * | 2011-07-13 | 2011-11-23 | 宁波大学 | Electrical explosion spraying method for powder |
| CN103674738A (en) * | 2013-12-13 | 2014-03-26 | 中国人民解放军理工大学 | Experimental device for automatically loading impacts on SHPB (Split Hopkinson Pressure Bar) at high temperature |
| CN104034589A (en) * | 2014-05-16 | 2014-09-10 | 南京理工大学 | Hopkinson pull rod emission device |
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| 王祥林: "多功能SHPB装置及水泥石材料的动态性能研究", 《实验力学》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931334A (en) * | 2015-06-01 | 2015-09-23 | 武汉大学 | Loading and unloading device based on explosion self-destruction effect |
| CN104931334B (en) * | 2015-06-01 | 2017-12-08 | 武汉大学 | A kind of based on blast self-destruction plus discharge mechanism |
| CN108955433A (en) * | 2018-07-06 | 2018-12-07 | 哈尔滨理工大学 | Fuse explosion breaking concrete system and breaking method |
| CN110031174A (en) * | 2019-03-20 | 2019-07-19 | 安徽理工大学 | A kind of striking experiment device based on detonation driven |
| CN110031174B (en) * | 2019-03-20 | 2020-09-29 | 安徽理工大学 | Impact experimental device based on detonation drive |
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Application publication date: 20150401 |