CN108225940A - A kind of explosive shearing test system and test method - Google Patents
A kind of explosive shearing test system and test method Download PDFInfo
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- CN108225940A CN108225940A CN201710843470.8A CN201710843470A CN108225940A CN 108225940 A CN108225940 A CN 108225940A CN 201710843470 A CN201710843470 A CN 201710843470A CN 108225940 A CN108225940 A CN 108225940A
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- explosive
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- 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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
Abstract
The invention discloses a kind of explosive shearing test system and test method, which includes explosive storing apparatus, shearing force bringing device, confining pressure bringing device and dynamic monitor；Confining pressure bringing device includes enclosing the second Power Component to pressure to central role module application, it is described enclose it is perpendicular to the direction of pressure and the crash direction dropped hammer.The explosive shearing test system can in the lab, based on relatively low input load condition, you can completes the macroscopic view shearing fire trial of explosive, provides data for the analysis of igniting critical condition and the foundation of numbered analog simulation and support.
Description
Technical field
The present invention relates to explosive stability analysis technical field, more particularly to a kind of explosive shearing test system.This hair
It is bright to further relate to a kind of test method based on the explosive shearing test system.
Background technology
Explosive is easily lighted a fire by the stimulation of extraneous various factors as a kind of high-energy chemistry substance, wherein, shearing is
One key factor of explosive igniting.For example, response process of the explosive loading in low speed Penetration, due to explosive and shell case
Between friction explosive axial displacement is caused to be unevenly distributed, can cause explosive that macroscopical shear action occurs；In explosion accident, break
During piece penetration ammunition, also can accompanied by intense shearing effect.Study igniting critical condition pair of the explosive under macroscopical shearing condition
It is analyzed in explosive stability particularly important.Since the input condition of explosive shearing igniting is higher, under the loading environment of laboratory, such as
Hopkinson bar loads, loading etc. of dropping hammer, and is all difficult to realize the shearing igniting of explosive macroscopic view, is also unfavorable for point of igniting critical condition
Analysis.
Therefore it provides a kind of explosive shearing test system, in the lab, based on relatively low input load condition, i.e.,
The macroscopic view shearing fire trial of explosive can be completed, data are provided for the analysis of igniting critical condition and the foundation of numbered analog simulation
The problem of supporting, just becoming those skilled in the art's urgent need to resolve.
Invention content
The object of the present invention is to provide a kind of explosive shearing test system, in the lab, be carried based on relatively low input
Lotus condition, you can the macroscopic view shearing fire trial of explosive is completed, for the igniting analysis of critical condition and building for numbered analog simulation
The vertical data that provide are supported.It is a further object of the present invention to provide a kind of test methods based on the explosive shearing test system.
In order to solve the above technical problems, the present invention provides a kind of explosive shearing test system, including explosive storing apparatus, cut
Shear force bringing device, confining pressure bringing device and dynamic monitor；
The explosive storing apparatus includes the central role module with storage tank and blocks in the storage tank opening
Transparent baffle, packaged explosive to be tested is positioned in the storage tank；
The shearing force bringing device includes dropping hammer, provides the first Power Component of default lower stamping press for described drop hammer,
With the punch for providing pre-set shear power to packaged explosive under the shock dropped hammer；
The confining pressure bringing device includes applying the second Power Component enclosed to pressure to the central role module, described
It encloses perpendicular to the direction of pressure and the crash direction dropped hammer.
Further, first Power Component includes straight line cylinder body and is installed on the cylinder cap of the straight line cylinder ends,
Described drop hammer is installed in the linear cylinder body；It is enclosed between the top dropped hammer, the straight line cylinder body and the cylinder cap three
Into air tight housing, the air tight housing is connected with gas cylinder, the air stream drives lower edge being passed through in the air tight housing of dropping hammer
The axially reciprocating of the straight line cylinder body.
Further, the side wall of the straight line cylinder body is equipped with shear pin, it is described drop hammer undershoot when cut short the shearing
Screw.
Further, the shear pin includes multiple pins, and the diameter of section of each pin differs.
Further, the dynamic monitor is high-speed photography system.
Further, second Power Component includes hydraulic cylinder, and the piston external part of the hydraulic cylinder is resisted against described
Central role module, and the prolonging direction of the piston is the direction enclosed to pressure.
Further, the confining pressure bringing device further includes explosive pressure rod, and the central role module offers and institute
The cross through hole that storage tank is connected is stated, the explosive pressure rod, which slides axially, to be installed in the cross through hole, the explosive
One end of pressure rod is resisted against the piston, and the other end is resisted against the packaged explosive.
Further, the punch include the first punch and the second punch, the central role module be opened in it is described
The vertical through holes that storage tank is connected, first punch and second punch are from top to bottom set in turn in described vertical logical
In hole, the end of first punch is higher by the central role module preset height, to described first during the weight undershoot
The end of punch applies pressure, and the bottom end of second punch is resisted against the packaged explosive.
Further, support component is further included, the support component includes the base for installing the central role module
Seat, for fix the hydraulic cylinder locating support, for the straight line cylinder body is installed the first support plate, for by described the
One support plate is installed on the supporting rod of the pedestal and the second support for the locating support to be fixed in the pedestal
Plate passes through connecting rod Joint between second support plate and the central role module.
The present invention also provides a kind of packaged explosive shearing test method, for explosive shearing test system as described above
In, this method includes：
Confining pressure load step：Pressure is applied for packaged explosive by confining pressure bringing device, generates the packaged explosive swollen
It is swollen, under the displacement limitation of central role module and transparent baffle, realize the confining pressure loading to the packaged explosive；
Drop hammer rate-determining steps：After the confining pressure of the packaged explosive reaches preset value, make to fall by shearing force bringing device
Hammer accelerates to fall, and drops hammer and is controlled relative to the thorax speed that goes out of straight line cylinder body by the pin of different cross section diameter in shear pin；
Explosive shears step：It drops hammer and is collided after discharging with the first punch, so as to push the second punch linearly downward
Movement, under the limitation of central role module, the second punch causes packaged explosive macroscopical shearing；
Dynamic monitoring step：The change procedure and second of shear interface is obtained by high-speed photography device in shear history
The shear velocity of punch simultaneously makes photologging.
Explosive shearing test system provided by the invention includes explosive storing apparatus, shearing force bringing device, confining pressure and applies
Device and dynamic monitor；Wherein, explosive storing apparatus includes the central role module with storage tank and blocks in described
The transparent baffle of storage tank opening, packaged explosive to be tested are positioned in the storage tank；Shearing force bringing device includes falling
Hammer, dropping hammer for described in provides the first Power Component of default lower stamping press and is carried under the shock dropped hammer to packaged explosive
For the punch of pre-set shear power；Confining pressure bringing device includes enclosing the second power packages to pressure to central role module application
Part, it is described enclose it is perpendicular to the direction of pressure and the crash direction dropped hammer.
During the work time, packaged explosive is placed in storage tank, and passes through central role module and transparent baffle
Collective effect limits the boundary stroke of packaged explosive, starts the second Power Component, is allowed to enclose to pressure to the application of central role module
Power, since the peripheral boundaries of packaged explosive are limited, then what central role module can be subject to encloses to pressure transmission to molding
Explosive；After enclosing to pressure-loaded, start the first Power Component so that dropping hammer to fall and go out with preset pressure impinges upon
On punch, punch moves down and applies macroscopical shearing force to packaged explosive, while dynamic monitoring step obtains shear interface therewith
The shear velocity of change procedure and the second punch；In this way, the explosive shearing test system can in the lab, based on relatively low defeated
Enter load-up condition, you can complete the macroscopic view shearing fire trial of explosive, analysis and numbered analog simulation for critical condition of lighting a fire
Foundation provide data support.
Description of the drawings
Fig. 1 is a kind of structure diagram of specific embodiment of explosive shearing test system provided by the present invention；
Fig. 2 is the partial structural diagram of explosive shearing test system shown in Fig. 1；
Fig. 3 is a kind of flow chart of specific embodiment of test method provided by the present invention.
Reference sign：
1- central role modules
2- transparent baffles
3- packaged explosives
4- drops hammer
5- straight line cylinder bodies
6- shear pins
7- hydraulic cylinders
8- explosive pressure rods
The first punches of 9-
The second punches of 10-
11- pedestals
12- locating supports
The first support plates of 13-
14- supporting rods
The second support plates of 15-
16- connecting rods
Specific embodiment
The core of the present invention is to provide a kind of explosive shearing test system, in the lab, be carried based on relatively low input
Lotus condition, you can the macroscopic view shearing fire trial of explosive is completed, for the igniting analysis of critical condition and building for numbered analog simulation
The vertical data that provide are supported.Another core of the present invention is to provide a kind of test method based on the explosive shearing test system.
In order that those skilled in the art will better understand the technical solution of the present invention, below in conjunction with the accompanying drawings it is and specific real
Applying mode, the present invention is described in further detail.
It please refers to Fig.1 and Fig. 2, Fig. 1 is a kind of specific embodiment of explosive shearing test system provided by the present invention
Structure diagram；Fig. 2 is the partial structural diagram of explosive shearing test system shown in Fig. 1.
In a kind of specific embodiment, explosive shearing test system provided by the invention includes explosive storing apparatus, cuts
Shear force bringing device, confining pressure bringing device and dynamic monitor；Wherein, explosive storing apparatus includes the core with storage tank
It effort module 1 and blocks in the transparent baffle 2 of the storage tank opening, packaged explosive 3 to be tested is positioned over the storage tank
It is interior；Shearing force bringing device includes dropping hammer 4,4 provides the first Power Component of default lower stamping press and described for described drop hammer
It drops hammer and the punch of pre-set shear power is provided to packaged explosive 3 under 4 shock；Confining pressure bringing device is included to the central role mould
Block 1, which applies, encloses the second Power Component to pressure, it is described enclose to the direction of pressure with it is described drop hammer 4 crash direction it is perpendicular.
During the work time, packaged explosive 3 is placed in storage tank, and passes through central role module 1 and transparent baffle 2
Collective effect limitation packaged explosive 3 boundary stroke, start the second Power Component, be allowed to central role module 1 application enclose
To pressure, since the peripheral boundaries of packaged explosive 3 are limited, then what central role module 1 can be subject to encloses to pressure transmission
To packaged explosive 3；After enclosing to pressure-loaded, start the first Power Component so that drop hammer and 4 whereabouts and rushed with preset pressure
Go out to impinge upon on punch, punch moves down and applies macroscopical shearing force to packaged explosive 3, while the acquisition of dynamic monitoring step is cut therewith
Cut the change procedure at interface and the shear velocity of the second punch 10；In this way, the explosive shearing test system can in the lab,
Based on relatively low input load condition, you can complete the macroscopic view shearing fire trial of explosive, the analysis sum number for critical condition of lighting a fire
The foundation for being worth analog simulation provides data support.
Above-mentioned shearing force applies module, for the 4 application pressure loadings that drop hammer, when the confining pressure of the packaged explosive 3 reaches
After preset value, drop hammer and 4 acceleration and hit punch, and utilize impact of the punch to packaged explosive 3 so that the packaged explosive 3 is sent out
Raw macroscopic view shearing.
Specifically, above-mentioned first Power Component includes straight line cylinder body 5 and the cylinder cap for being installed on 5 end of straight line cylinder body,
Described drop hammer 4 is installed in the straight line cylinder body 5, which can be understood as the cylinder body of cylinder, and dropping hammer 4 is appreciated that
Cylinder rod for cylinder；It is described drop hammer 4 top, the straight line cylinder body 5 and the cylinder cap three between surround air tight housing, it is described
Air tight housing is connected with gas cylinder, the straight line cylinder body 5 described in the 4 air stream drives lower edges being passed through in the air tight housing that drops hammer
Axially reciprocating.When needing to provide shearing force for explosive, start gas cylinder valve, gas cylinder is inflated for air tight housing so that should
Air pressure raising in air tight housing, is dropped hammer 4 and is moved downward under the drive of raised air pressure with preset lower pressure, so as to hit
Punch simultaneously realizes shear transfer.
In theory, the first Power Component is not limited to above structure, as long as being capable of providing towards 3 side of packaged explosive
To straight line lower punch power, and ensure the dynamic structure of enough shearing forces, for example, the shearing force bringing device can also be gas
The forms such as hammer or hydraulic hammer.
In order to ensure enough shearing forces, shear pin 6,4 undershoots of dropping hammer can be installed in the side wall of straight line cylinder body 5
When cut the shear screw, when drop hammer 4 undershoot when, when shearing force reaches the size that can cut off shear screw, that is, represent cut
Shear force reaches preset value, and drop hammer 4 can smoothly go out thorax at this time under pre-set shear power.Shear pin 6 includes multiple pins, each described
The diameter of section of pin differs, so as to adjust the size of shearing force by the pin of different cross section diameter, to adapt to difference
Test requirements document.
The above-mentioned cylinder cap for being set to 5 end of straight line cylinder body is for closed gas and connects air source, and the cylinder barrel of straight line cylinder body 5 can
To serve as guide rail or guide rail be separately provided in cylinder, as plenum chamber and for limit drop hammer 4 movement locus, ensure it
The linearity of traveling；6 sequence of shear pin formed by multiple pins controls cylinder to export gas by different cross section diameter
Pressure, and then control to drop hammer and 4 go out thorax speed, before on-test, according to pre-set velocity, suitable dimension pin is selected simultaneously to install
Drop hammer 4.
Above-mentioned dynamic monitor is specially high-speed photography system, is cut in shear history by the acquisition of high-speed photography device
It cuts the change procedure at interface and the shear velocity of the second punch 10 and makes photologging.
In above-mentioned specific embodiment, the second Power Component provided by the present invention includes hydraulic cylinder 7, the hydraulic cylinder
7 piston external part is resisted against the central role module 1, and the prolonging direction of the piston is the side enclosed to pressure
To.The hydraulic cylinder 7 is used to apply pressure, and then compression forming explosive 3 to central role, and central role module 1 is fried for placing
Medicine, and the movement of explosive is limited, when hydraulic cylinder 7 squeezes central role module 1, since the limitation of movement of packaged explosive 3 is in core
So as to coordinate by central role module 1 and hydraulic cylinder 7, confining pressure is provided for explosive for heart effort module 1.
Transparent baffle 2 for blocking in the storage tank opening includes tempered glass baffle and cover board, the transparent gear
Plate 2 is applied not only to the movement of limitation explosive, observation window can also be provided, convenient for the form of explosive in observation experiment.
Apply effect to improve confining pressure, ensure that confining pressure is enough, and improve confining pressure and apply efficiency, above-mentioned confining pressure bringing device
Explosive pressure rod 8 is further included, the central role module 1 offers the cross through hole being connected with the storage tank, described fried
Medicine pressure rod 8, which slides axially, to be installed in the cross through hole, and one end of the explosive pressure rod 8 is resisted against the piston,
The other end is resisted against the packaged explosive 3.
Above-mentioned punch includes the first punch 9 and the second punch 10, and the central role module 1 is opened in and the storage tank
The vertical through holes being connected, first punch 9 and second punch 10 are from top to bottom set in turn in the vertical through holes
Interior, the end of first punch 9 is higher by 1 preset height of central role module, to described first during the weight undershoot
The end of punch 9 applies pressure, and the bottom end of second punch 10 is resisted against the packaged explosive 3.Wherein, the first punch 9 is used
In bear piston type drop hammer 4 impact, and push the second punch 10 of polytetrafluoroethylene (PTFE) material to the second punch of down cut explosive
10 for shearing explosive, and excludes explosive and the extraneous possibility for rubbing and leading to light a fire.
Further, which further includes support component, and the support component is included for installing
State central role module 1 pedestal 11, for fix the hydraulic cylinder 7 locating support 12, for installing the straight line cylinder body 5
The first support plate 13, for supporting rod 14 that first support plate 13 is installed on to the pedestal 11 and for will described in
Locating support 12 is fixed in the second support plate 15 of the pedestal 11, second support plate 15 and the central role module 1
Between pass through 16 Joint of connecting rod.Pass through fixing and supporting between each module of support component realization so that structure is more
It is reliable and stable.
Since the pre- confining pressure of packaged explosive 3 loads so that the initial input condition of explosive shearing igniting declines, can be in reality
It tests room operating platform to study the critical condition of explosive shearing igniting, operating environment is simple, does not spend field trial, efficiency
It gets a promotion, also provides convenience for visual inspection.The visual inspection of shear interface be conducive to shear velocity load when
Between course analyze, be conducive to interface topography variation analysis, so as to for the later stage shearing igniting theory analysis and numerical simulation work
Reliable information is provided.
During installation, central role module 1 is installed on pedestal first, blending bolt fixes four positions in lower section, then
Tempered glass is installed on tempered glass cover plate, then tempered glass cover plate is installed on central role module 1, blending bolt is solid
It is fixed；Then packaged explosive 3, explosive pressure rod 8, the second punch 10 and the first punch 9 are sequentially loaded into；Then, hydraulic cylinder 7 is determined
Position stent 12 is placed in the second support plate 15, and blending bolt is fixed, and hydraulic cylinder 7 then is inserted into locating support 12, is finally used
Connecting rod 16 connects the second support plate 15 and central role module 1, then is fixed with bolt, you can completes explosive storing apparatus and encloses
The installation of pressure load device.
The top of confining pressure bringing device is shearing force bringing device, which mainly includes straight line cylinder body 5, cylinder
Lid, shear pin 6 and drop hammer 4.During installation, the first support plate 13 and pedestal 11 are connected with supporting rod 14 first, blending bolt is solid
It is fixed；Then straight line cylinder body 5 is secured by bolts in the first support plate 13 again, then will be dropped hammer and 4 be fixed on by shear pin 6
In straight line cylinder, cylinder cap is finally put on into O-shaped rubber ring, by thread fitting, mounted in the top of straight line cylinder, and by nitrogen gas
Bottle is connect with the top of straight line cylinder body 5, completes the installation of pilot system shearing force bringing device.
In addition to above-mentioned explosive shearing test device, the present invention also provides a kind of test methods applied to the experimental rig.
As shown in figure 3, this method comprises the following steps：
S1- confining pressure load steps：Pressure is applied for packaged explosive 3 by confining pressure bringing device, produces the packaged explosive 3
Raw expansion under the displacement limitation of central role module 1 and transparent baffle 2, realizes the confining pressure loading to the packaged explosive 3；
S2- drops hammer 4 rate-determining steps：After the confining pressure of the packaged explosive 3 reaches preset value, pass through shearing force bringing device
Make to drop hammer 4 acceleration whereabouts, and drop hammer 4 goes out pin of the thorax speed by different cross section diameter in shear pin 6 relative to straight line cylinder body 5
Control；
S3- explosives shear step：It drops hammer and is collided with the first punch 9 after 4 releases, so as to push the second punch 10 along straight line side
To moving downward, under the limitation of central role module 1, the second punch 10 causes macroscopical shearing to packaged explosive 3；
S4- dynamic monitoring steps：In shear history by high-speed photography device obtain shear interface change procedure and
The shear velocity of second punch 10 simultaneously makes photologging.
Before the test, build high-speed camera test system first, be then turned on hydraulic pump, make the main shaft of hydraulic cylinder 7 with
Pressure rod is in contact, and slowly applies pressure to packaged explosive 3, and packaged explosive 3 is made to generate expansion perpendicular to compression aspect,
So as to squeeze central role module 1, after hydraulic pressure meter reading reaches preset pressure, the confining pressure loading to packaged explosive 3 is completed.
After high-speed camera test system is opened, the straight line cylinder body 5 into 4 rate control modules that drop hammer is filled with nitrogen, makes
Pressure rise so as to cut lower section shear pin 6 (pin is made of 45# steel, shear strength 180MPa), makes piston drop hammer 4
Accelerate to glide in straight line cylinder body 5, it is final to obtain required speed, the first punch 9 of lower end is hit, and then push polytetrafluoro
Second punch 10 of ethylene material, shear forming explosive 3.The pin of varying cross-section diameter is selected, the first of cylinder can be adjusted
Beginning releases stress, and finally makes the different stroke speed of 4 acquisitions that drops hammer；In shear history, it can be obtained by high-speed camera fried
Macroscopical shear velocity of medicine and the pattern situation of change of shear interface, by constantly regulate initial input pressure and pin size,
The critical condition of the shearing igniting of packaged explosive 3 can be obtained.
Specific case used herein is expounded the principle of the present invention and embodiment, and above example is said
The bright method and its core concept for being merely used to help understand the present invention.It should be pointed out that the ordinary skill for the art
For personnel, without departing from the principle of the present invention, can also to the present invention some improvement and modification can also be carried out, these improvement
It is also fallen within the protection scope of the claims of the present invention with modification.
Claims (10)
1. a kind of explosive shearing test system, which is characterized in that applied including explosive storing apparatus, shearing force bringing device, confining pressure
Feeder apparatus and dynamic monitor；
The explosive storing apparatus includes the central role module (1) with storage tank and blocks in the storage tank opening
Transparent baffle (2), packaged explosive (3) to be tested are positioned in the storage tank；
First power packages of the shearing force bringing device including dropping hammer (4), for described (4) offer of dropping hammer stamping press under default
Part and it is described drop hammer (4) shock under to packaged explosive (3) provide pre-set shear power punch；
The confining pressure bringing device includes applying the second Power Component enclosed to pressure to the central role module (1), described
Enclose to the direction of pressure with it is described drop hammer (4) crash direction it is perpendicular.
2. explosive shearing test system according to claim 1, which is characterized in that first Power Component includes straight line
Cylinder body (5) and the cylinder cap for being installed on straight line cylinder body (5) end, drop hammer (4) are installed in the straight line cylinder body (5)；
It is described drop hammer (4) top, the straight line cylinder body (5) and the cylinder cap three between surround air tight housing, the air tight housing
It is connected with gas cylinder, the axial direction of the straight line cylinder body (5) described in the air stream drives lower edge that (4) are passed through in the air tight housing that drops hammer
It moves back and forth.
3. explosive shearing test system according to claim 2, which is characterized in that the side wall peace of the straight line cylinder body (5)
Equipped with shear pin (6), it is described drop hammer (4) undershoot when cut short the shear screw.
4. explosive shearing test system according to claim 3, which is characterized in that the shear pin (6) is including multiple
Pin, the diameter of section of each pin differ.
5. explosive shearing test system according to claim 4, which is characterized in that the dynamic monitor is takes the photograph at a high speed
Shadow system.
6. explosive shearing test system according to claim 5, which is characterized in that second Power Component includes hydraulic pressure
Cylinder (7), the piston external part of the hydraulic cylinder (7) are resisted against the central role module (1), and the prolonging direction of the piston
For the direction enclosed to pressure.
7. explosive shearing test system according to claim 6, which is characterized in that the confining pressure bringing device further includes fried
Medicine pressure rod (8), the central role module (1) offer the cross through hole being connected with the storage tank, and the explosive adds
Compression bar (8), which slides axially, to be installed in the cross through hole, and one end of the explosive pressure rod (8) is resisted against the piston,
The other end is resisted against the packaged explosive (3).
8. explosive shearing test system according to claim 7, which is characterized in that the punch includes the first punch (9)
With the second punch (10), the central role module (1) is opened in the vertical through holes being connected with the storage tank, and described first
Punch (9) and second punch (10) are from top to bottom set in turn in the vertical through holes, the end of first punch (9)
Portion is higher by central role module (1) preset height, applies pressure to the end of first punch (9) during the weight undershoot
Power, the bottom end of second punch (10) are resisted against the packaged explosive (3).
9. explosive shearing test system according to claim 8, which is characterized in that further include support component, the support
Component includes pedestal (11), the locating support for fixing the hydraulic cylinder (7) for installing the central role module (1)
(12), for the straight line cylinder body (5) is installed the first support plate (13), for first support plate (13) to be installed on institute
State the supporting rod (14) of pedestal (11) and the second support plate for the locating support (12) to be fixed in the pedestal (11)
(15), pass through connecting rod (16) Joint between second support plate (15) and the central role module (1).
10. a kind of packaged explosive (3) shearing test method, which is characterized in that for as described in any one of claim 1 to 9
Explosive shearing test system in, this method includes：
Confining pressure load step：Pressure is applied for packaged explosive (3) by confining pressure bringing device, generates the packaged explosive (3)
Expansion under the displacement limitation of central role module (1) and transparent baffle (2), is realized and the confining pressure of the packaged explosive (3) is added
It carries；
Drop hammer (4) rate-determining steps：After the confining pressure of the packaged explosive (3) reaches preset value, made by shearing force bringing device
Drop hammer (4) accelerate fall, drop hammer (4) go out thorax speed by different cross section diameter in shear pin (6) relative to straight line cylinder body (5)
Pin control；
Explosive shears step：It drops hammer after (4) discharge and is collided with the first punch (9), so as to push the second punch (10) along straight line side
To moving downward, under the limitation of central role module (1), the second punch (10) causes macroscopical shearing to packaged explosive (3)；
Dynamic monitoring step：The change procedure and the second punch of shear interface are obtained by high-speed photography device in shear history
(10) shear velocity simultaneously makes photologging.
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| CN109520861A (en) * | 2018-11-15 | 2019-03-26 | 北京化工大学 | Energetic material shear rate limit measuring device |
| CN109520861B (en) * | 2018-11-15 | 2020-10-27 | 北京化工大学 | Shear rate limit measuring device for liquid energetic material |
| 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 |
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