CN104198307B - A kind of unidirectional pressure cuts one dynamic stress and strain test device - Google Patents
A kind of unidirectional pressure cuts one dynamic stress and strain test device Download PDFInfo
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- CN104198307B CN104198307B CN201410446697.5A CN201410446697A CN104198307B CN 104198307 B CN104198307 B CN 104198307B CN 201410446697 A CN201410446697 A CN 201410446697A CN 104198307 B CN104198307 B CN 104198307B
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- pressure
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- haircut
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Abstract
nullThe invention discloses a kind of unidirectional pressure and cut one dynamic stress and strain test device，Including ballistic projections device，Ballistic projections device includes gas cylinder，Gas cylinder is provided with valve of giving vent to anger，Valve of giving vent to anger is connected with gun tube，The port of export of gun tube is provided with pressure and cuts incident bar，Press the end cutting incident bar to be provided with pressure and cut transmission bar，Pressure is cut incident bar and is cut with pressure and be flexibly connected by annulus between transmission bar，Pressure cuts incident bar and pressure is cut transmission bar and is respectively mounted a pressure haircut，Two pressure haircuts are respectively positioned in annulus，The lateral surface of two pressure haircuts is disposed as inclined-plane，And the inclined-plane of two pressure haircuts is parallel to each other，Test material is placed between the inclined-plane of two pressure haircuts，When bullet penetrate in gun tube shock pressure cut incident bar formed compressional wave time，Compressional wave is delivered to press the inclined-plane of haircut，And act on test material，Make pressure haircut test material can not only be carried out Impulsive load，And can be cut out loading.
Description
Technical field
The invention of this reality relates to a kind of experiment equipment, cuts one dynamic stress and strain particularly to a kind of unidirectional pressure and surveys
Electricity testing device.
Background technology
In many cases, such as blast, projectile penetrating etc., material is Impulsive load by load.In complexity
Stress state under the failure mode of material be often different from the behavior characteristics of preferable load condition, and shear
Destroy and often serve the mastery reaction of material damage, thus material under the combined compression-shear loading of research material
Response has the highest learning value.Material stress-strain relation under Impulsive load is the important of material
Performance parameter, and dynamic impulsion loading test is key technology.Traditional Hopkinson pressure bar can not complete
The pressure of test material cuts the synchronism detection of dynamic property, it is necessary to the individually dynamic compression characteristics or dynamic of test material
State shear property, this is not only difficult to reflect the dynamic response that material is cut under combined stress loads in pressure, it is also difficult to
The truth of reflection material damage.
Summary of the invention
The technical problem to be solved is to provide a kind of unidirectional pressure and cuts one dynamic stress and strain test dress
Putting, this device can be while test material impact loading performance, and the dynamic shearing of synchronism detection material is special
Property, it is possible to accurately reflect the dynamic response that material is cut under combined stress loads in pressure.
For achieving the above object, the present invention provides following technical scheme: a kind of unidirectional pressure is cut one and dynamically answered
Stress-strain test device, including ballistic projections device, described ballistic projections device includes gas cylinder, high pressure
Gas cylinder be respectively arranged at two ends with air intake valve and valve of giving vent to anger, valve of giving vent to anger is connected with gun tube, sets in gun tube
There are bullet, the port of export of described gun tube to be provided with pressure and cut incident bar, press the end cutting incident bar to be provided with pressure and cut transmission
Bar, pressure cut incident bar and cuts with pressure and be flexibly connected by annulus between transmission bar, and described pressure cuts incident bar
End and pressure are cut the head end of transmission bar and are respectively mounted a pressure haircut, and two pressure haircuts are respectively positioned on annulus
In, the lateral surface of two pressure haircuts is disposed as inclined-plane, and the inclined-plane of two pressure haircuts is parallel to each other, and two
Placing test material between the inclined-plane of individual pressure haircut, described pressure cuts incident bar and pressure is cut on the body of rod of transmission bar
Being respectively mounted foil gauge, described gun tube, pressure are cut incident bar, pressure haircut, are pressed the axis cutting transmission bar to be respectively positioned on together
One horizontal plane.
Preferably, the centre position of the annulus first half is provided with opening, and the length of opening, width are the biggest
In the test length of material, width.
Preferably, pressure is cut the end of transmission bar and is connected absorbing rod, and the axis of described absorbing rod and pressure cut transmission bar
Axis be positioned at same level.
Preferably, the gas outlet section of gas cylinder, gun tube section, give vent to anger valve section and bullet end
Section is the most consistent.
Preferably, pressure haircut, pressure cut incident bar, pressure is cut the section of transmission bar and makes material all unanimously,
And the section pressing haircut is consistent with bullet end section.
Use technique scheme, cut the end of incident bar in pressure and press the head end cutting transmission bar that pressure haircut is installed,
And the lateral surface of pressure haircut is arranged respectively to inclined-plane, cut incident rod when bullet penetrates shock pressure in gun tube
When becoming compressional wave, compressional wave is delivered to press the inclined-plane of haircut, and acts on test material, makes pressure haircut not
Be only capable of and test material carried out Impulsive load, and can be cut out loading, due to pressure cut incident bar with
Pressure cuts connection annulus between transmission bar, thus the radial force acted on pressure haircut is obtained by annulus
With balance, it is to avoid pressure haircut generation radial displacement.
The centre position of the annulus first half is provided with opening, and the length of opening, width respectively greater than test material
The length of material, width, it is simple to test material is put between pressure haircut；Pressure is cut the end of transmission bar and is connected suction
Putting away sports equipment, the axis that the axis of absorbing rod cuts transmission bar with pressure is positioned at same level, it is simple to pressure is cut transmission bar and is subject to
To Impulsive load ripple and cut out loading wave and absorb by absorbing rod, after reducing projectile impact pressure cut transmission bar with
Pressure cuts the pressure of incident bar；The gas outlet section of gas cylinder, gun tube section, give vent to anger valve section and son
Play end section all consistent, make ballistic projections device keep coupling air-tightness, it is to avoid during emission bullet, bullet is sent out
Raw radial oscillation；Pressure haircut, pressure cut incident bar, pressure is cut the section of transmission bar and makes material all unanimously,
And the section pressing haircut is consistent with bullet end section, enables Impulsive load ripple and to cut out loading wave uniform
Transmission, it is to avoid owing to damped coefficient difference causes compressional wave transmission uneven.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Fig. 2 is annulus of the present invention pressure haircut assembling schematic diagram.
Wherein, 1. gas cylinder 2. air intake valve 3. give vent to anger valve 4. gun tube 5. bullet 6. pressure cut
Incident bar 7. pressure is cut transmission bar 8. annulus 9. and is pressed haircut 10. to test material 11. foil gauge
12. absorbing rods.
Detailed description of the invention
Below in conjunction with the accompanying drawings, by the description to embodiment, the present invention will be further described:
As it is shown in figure 1, a kind of unidirectional pressure of the present invention cuts one dynamic stress and strain test device, including bullet
Discharger, ballistic projections device includes that gas cylinder 1, the two ends of gas cylinder 1 are respectively mounted air intake valve
2 and give vent to anger valve 3, valve 3 of giving vent to anger is connected with gun tube 4, is provided with bullet 5, going out of gun tube 4 in gun tube 4
Mouth end is provided with pressure and cuts incident bar 6, and pressure is cut incident bar 6 and do not contacted with gun tube 4, and pressure cuts the end of incident bar 6
Being provided with pressure and cut transmission bar 7, pressure is cut incident bar 6 and is cut with pressure and be flexibly connected by annulus 8 between transmission bar 7,
Pressure cuts the end of incident bar 6 and pressure is cut the head end of transmission bar 7 and is respectively mounted a pressure haircut 9, and two pressures are cut
9 are respectively positioned in annulus 8, and the lateral surface of two pressure haircuts 9 are disposed as inclined-plane, and two pressures
The inclined-plane of haircut 9 is parallel to each other, places test material 10 between the inclined-plane of two pressure haircuts 9, and pressure cuts incidence
Bar 6 and pressure cut foil gauge 11 of all fitting on the body of rod of transmission bar 7, and gun tube 4, pressure cut incident bar 6, pressure is cut
9, pressure is cut the axis of transmission bar 7 and is respectively positioned on same level.
Use technique scheme, cut the end of incident bar 6 in pressure and press the head end cutting transmission bar 7 that pressure is installed
Haircut 9, and the lateral surface of pressure haircut 9 is arranged respectively to inclined-plane, when bullet 5 penetrates shock in gun tube 4
Pressure cuts incident bar 6 when forming compressional wave, and compressional wave is delivered to press the inclined-plane of haircut 9, and acts on test material
On material 10, make pressure haircut 9 test material 10 can not only be carried out Impulsive load, and can cut
Cut out and load, cut incident bar 6 due to pressure and cut with pressure and between transmission bar 7, be connected annulus 8, thus act on pressure
Radial force on haircut 9 balanced by annulus 8, it is to avoid pressure haircut 9 occurs radial displacement.
For ease of test material 10 being put between two pressure haircuts 9, can be at the first half of annulus 8
Centre position opening is set, the length of this opening, width need be respectively greater than test material 10 length,
Width, to ensure that test material 10 can put into annulus 8；Cut for reducing to press after bullet 5 clashes into
Rhizoma Belamcandae 7 and pressure cut the pressure of incident bar 6, can cut the end connection absorbing rod 12 of transmission bar 7 in pressure, inhale
Put away sports equipment 12 axis cut the axis of transmission bar 7 with pressure and be positioned at same level.
During for avoiding emission bullet 5 there is radial oscillation in bullet 5, and the gas outlet of gas cylinder 1 can be made to break
Face, gun tube 4 section, give vent to anger valve 3 section and bullet 5 end section is set to the same, it is ensured that son
Play discharger and keep coupling air-tightness；For avoiding owing to damped coefficient difference causes compressional wave transmission uneven
Phenomenon, pressure haircut 9, pressure can be cut incident bar 6, pressure is cut the section of transmission bar 7 and is arranged to the same,
The making material used is also consistent, and makes the section of pressure haircut 9 consistent with bullet 5 end section.
The present invention presses the inclined-plane of haircut 9 to be 30 ° or 45 ° or 60 °, specifically can select according to the actual requirements
Or make the pressure haircut 9 of other gradients.
Incident bar 6 cut by annulus 8 mentioned by the present invention with pressure and pressure is cut transmission bar 7 and is flexibly connected and refers to,
Annulus 8 and pressure are cut incident bar 6 and press the body of rod cutting transmission bar 7 to avoid fitting tightly, and can edge
Pressure is cut incident bar 6 and presses the axis direction cutting transmission bar 7 to slide.
The present invention presses haircut 9 to cut incident bar 6 respectively with pressure and pressure is cut transmission bar 7 junction and fitted tightly, with
Time can smear vaseline in joint place or other lipid materials ensure its tightness.
Above-described is only the preferred embodiment of the present invention, it is noted that for the common skill of this area
For art personnel, without departing from the concept of the premise of the invention, it is also possible to make some deformation and improvement,
These broadly fall into protection scope of the present invention.
Claims (5)
1. unidirectional pressure cuts an one dynamic stress and strain test device, including ballistic projections device, described son
Play discharger include gas cylinder (1), gas cylinder (1) be respectively arranged at two ends with air intake valve (2)
And valve of giving vent to anger (3), valve of giving vent to anger (3) is connected with gun tube (4), is provided with bullet (5) in gun tube (4),
The port of export of described gun tube (4) is provided with pressure and cuts incident bar (6), and pressure is cut the end of incident bar (6) and is provided with pressure
Cutting transmission bar (7), pressure cuts incident bar (6) and pressure is cut and is respectively mounted foil gauge on the body of rod of transmission bar (7)
(11), it is characterised in that: described pressure cuts incident bar (6) and pressure is cut and passed through annular sleeve between transmission bar (7)
Cylinder (8) is flexibly connected, and described pressure cuts the end of incident bar (6) and pressure is cut the head end of transmission bar (7) and divided
Not An Zhuan pressure haircut (9), in two pressures haircut (9) are respectively positioned on annulus (8), two pressures are cut
The lateral surface of head (9) is disposed as inclined-plane, and the inclined-plane of two pressures haircut (9) is parallel to each other, two
Pressure haircut (9) inclined-plane between place test material (10), described gun tube (4), pressure cut incident bar (6),
Pressure haircut (9), pressure are cut the axis of transmission bar (7) and are respectively positioned on same level.
Unidirectional pressure the most according to claim 1 cuts one dynamic stress and strain test device, and its feature exists
In: the centre position of described annulus (8) first half is provided with opening, and the length of opening, width are the biggest
Length, width in test material (10).
Unidirectional pressure the most according to claim 2 cuts one dynamic stress and strain test device, and its feature exists
In: described pressure is cut the end of transmission bar (7) and is connected absorbing rod (12), the axis of described absorbing rod (12)
The axis cutting transmission bar (7) with pressure is positioned at same level.
Unidirectional pressure the most according to claim 1 cuts one dynamic stress and strain test device, and its feature exists
In: the gas outlet section of described gas cylinder (1), gun tube (4) section, valve of giving vent to anger (3) section with
And bullet (5) end section is the most consistent.
Unidirectional pressure the most according to claim 4 cuts one dynamic stress and strain test device, and its feature exists
In: described pressure haircut (9), pressure cut incident bar (6), pressure is cut the section of transmission bar (7) and makes material
All consistent, and press the section of haircut (9) consistent with bullet (5) end section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410446697.5A CN104198307B (en) | 2014-09-03 | 2014-09-03 | A kind of unidirectional pressure cuts one dynamic stress and strain test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410446697.5A CN104198307B (en) | 2014-09-03 | 2014-09-03 | A kind of unidirectional pressure cuts one dynamic stress and strain test device |
Publications (2)
| Publication Number | Publication Date |
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| CN104198307A CN104198307A (en) | 2014-12-10 |
| CN104198307B true CN104198307B (en) | 2016-08-17 |
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| CN201410446697.5A Expired - Fee Related CN104198307B (en) | 2014-09-03 | 2014-09-03 | A kind of unidirectional pressure cuts one dynamic stress and strain test device |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990809B (en) * | 2015-06-26 | 2017-09-22 | 中国科学院地质与地球物理研究所 | One kind landslide base clad can repeated direct shear test method |
| CN105115831B (en) * | 2015-06-26 | 2017-09-29 | 中国科学院地质与地球物理研究所 | The different lower coarse-grained soil shearing strength test methods of hydraulic gradient effect |
| CN105043867B (en) * | 2015-06-26 | 2017-11-07 | 中国科学院地质与地球物理研究所 | A kind of soil-rock mixture residual strength test method |
| CN105115834B (en) * | 2015-06-26 | 2017-08-15 | 中国科学院地质与地球物理研究所 | Coarse-grained soil shearing strength test method under a kind of cryogenic conditions |
| CN104949891B (en) * | 2015-06-26 | 2017-12-05 | 中国科学院地质与地球物理研究所 | A kind of large scale soil-rock mixture moves shear strength test method |
| CN105115832B (en) * | 2015-06-26 | 2017-12-05 | 中国科学院地质与地球物理研究所 | A kind of geotechnique for considering seepage effect tiltedly cuts strength test device |
| CN106996895A (en) * | 2017-05-04 | 2017-08-01 | 东北大学 | The experimental provision of concrete dynamic shear strength is calculated using Hopkinson pressure bar |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6109093A (en) * | 1996-12-12 | 2000-08-29 | European Community | Split Hopkinson bar testing apparatus |
| JP2002082031A (en) * | 2000-09-05 | 2002-03-22 | Ishikawajima Harima Heavy Ind Co Ltd | Hopkinson bar testing apparatus |
| CN201188076Y (en) * | 2008-02-04 | 2009-01-28 | 西北工业大学 | Hopkinson transpression bar with double experimental surfaces |
| CN101504347B (en) * | 2008-02-04 | 2010-10-13 | 西北工业大学 | Material dynamic double-pressing and shearing experimental device based on Hopkinson rod |
| CN201340368Y (en) * | 2009-01-22 | 2009-11-04 | 中国人民解放军国防科学技术大学 | Dynamic frictional coefficient tester |
| CN202676558U (en) * | 2011-12-01 | 2013-01-16 | 中国兵器工业集团第五三研究所 | Hopkinson rod impact shearing experiment device |
| CN103604706B (en) * | 2013-10-30 | 2016-03-09 | 四川大学 | A kind of complicated energetic disturbance rock burst laboratory experiment method and device for carrying out said thereof |
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