CN104198307A - Integrated dynamic one-way compression-shear stress-strain testing device - Google Patents
Integrated dynamic one-way compression-shear stress-strain testing device Download PDFInfo
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- CN104198307A CN104198307A CN201410446697.5A CN201410446697A CN104198307A CN 104198307 A CN104198307 A CN 104198307A CN 201410446697 A CN201410446697 A CN 201410446697A CN 104198307 A CN104198307 A CN 104198307A
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Abstract
The invention discloses an integrated dynamic one-way compression-shear stress-strain testing device. The integrated dynamic one-way compression-shear stress-strain testing device comprises a bullet shooting device, wherein the bullet shooting device comprises a high-pressure gas cylinder; the high-pressure gas cylinder is provided with a gas outlet valve; the gas outlet valve is connected with a gun barrel; a compression-shear incident bar is arranged at the outlet end of the gun barrel; a compression-shear transmission bar is arranged at the tail end of the compression-shear incident bar; the compression-shear incident bar is movably connected with the compression-shear transmission bar by virtue of an annular sleeve; compress-shear heads are mounted on the compression-shear incident bar and the compression-shear transmission bar respectively; the two compress-shear heads are arranged in the annular sleeve; the outer side surfaces of the two compression-shear heads are oblique planes which are parallel to each other; test materials are placed between the oblique planes of the two compression-shear heads. When bullets are shot out of the gun barrel to impact the compression-shear incident bar to form compression waves, the compression waves are transmitted to the oblique planes of the compression-shear heads and act on the test materials, so that the compression-shear heads are capable of performing impact loading and shear loading on the test materials.
Description
Technical field
The invention of this reality relates to a kind of experiment equipment, and particularly a kind of unidirectional pressure is cut one dynamic stress and strain proving installation.
Background technology
In many cases, as blast, projectile penetrating etc., material is subject to load and loads for impacting.Under complicated stress state, the failure mode of material is often different from the behavioural characteristic of desirable load condition, and shear failure has often played the leading role of material damage, thereby the pressure of research material is cut the response of material under compound loading and is had very high learning value.Material is the important performance characteristic of material in the stress-strain relation of impacting under loading, and dynamic impulsion loading test is gordian technique.Traditional Hopkinson pressure bar can not complete the pressure of test material and cut the synchronism detection of dynamic property, necessary dynamic compression characteristics or the dynamic shearing characteristic of test material separately, this is not only difficult to reflect that material cuts the dynamic response of compound stress under loading in pressure, is also difficult to the truth of reflection material damage.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of unidirectional pressure and cuts one dynamic stress and strain proving installation, this device can be when test material impacts loading performance, the dynamic shearing characteristic of synchronism detection material, can accurately reflect that material cuts the dynamic response of compound stress under loading in pressure.
For achieving the above object, the invention provides following technical scheme: a kind of unidirectional pressure is cut one dynamic stress and strain proving installation, comprise bullet emitter, described bullet emitter comprises gas cylinder, the two ends of gas cylinder are respectively equipped with air intake valve and the valve of giving vent to anger, the valve of giving vent to anger is connected with gun tube, in gun tube, be provided with bullet, the endpiece of described gun tube is provided with to press cuts incident bar, the end that pressure is cut incident bar is provided with to press cuts transmission bar, pressure is cut incident bar and is cut between transmission bar and be flexibly connected by annulus with pressure, described pressure is cut the end of incident bar and head end that pressure is cut transmission bar is installed respectively pressure haircut, press haircut to be all positioned at annulus for described two, press the lateral surface of haircut to be all set to inclined-plane for two, and press the inclined-plane of haircut parallel to each other for two, between the inclined-plane of two pressure haircuts, place test material, described pressure is cut on the body of rod that incident bar and pressure cut transmission bar foil gauge is all installed, described gun tube, pressure is cut incident bar, press haircut, the axis that pressure is cut transmission bar is all positioned at same level.
Preferably, the centre position of the annulus first half is provided with opening, and the length of opening, width are greater than respectively length, the width of test material.
Preferably, press the end of cutting transmission bar to connect absorbing rod, the axis of described absorbing rod is positioned at same level with pressing the axis of cutting transmission bar.
Preferably, the gas outlet section of gas cylinder, gun tube section, give vent to anger valve section and bullet end section all consistent.
Preferably, press haircut, press and cut incident bar, press and cut the section of transmission bar and make material all consistent, and press the section of haircut consistent with bullet end section.
Adopt technique scheme, in pressure, cut the end of incident bar and press the head end of cutting transmission bar that pressure haircut is installed, and will press the lateral surface of haircut to be arranged to respectively inclined-plane, when bullet is pressed when cutting incident bar and forming wave of compression from penetrating in gun tube to clash into, wave of compression is delivered to the inclined-plane of pressing haircut, and act on test material, make to press haircut to impact loading to test material, and can cut out loading, because pressure is cut incident bar and pressure and is cut and be connected annulus between transmission bar, thereby the radial force acting on pressure haircut is able to balance by annulus, avoided pressure haircut generation radial displacement.
The centre position of the annulus first half is provided with opening, and the length of opening, width are greater than respectively length, the width of test material, is convenient to test material to be put into and to press between haircut; The end that pressure is cut transmission bar connects absorbing rod, the axis of absorbing rod is positioned at same level with pressing the axis of cutting transmission bar, be convenient to press cut the impact loading wave that transmission bar is subject to and to cut out loading wave absorb by absorbing rod, reduce to press and cut transmission bar and press the pressure of cutting incident bar after projectile impact; The gas outlet section of gas cylinder, gun tube section, give vent to anger valve section and bullet end section all consistent, make bullet emitter keep coupling impermeability, bullet generation radial oscillation while avoiding emission bullet; Pressure haircut, pressure are cut incident bar, pressure is cut the section of transmission bar and make material all consistent, and press the section of haircut consistent with bullet end section, make to impact loading wave and cut out loading wave and can evenly transmit, avoid because ratio of damping difference causes wave of compression transmission inhomogeneous.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the present invention's annular casing pressure haircut assembling schematic diagram.
Wherein, 1. gas cylinder 2. air intake valves 3. valve 4. gun tube 5. bullets 6. of giving vent to anger are pressed and are cut incident bar 7. and press and cut transmission bar 8. annuluss 9. and press haircut 10. test material 11. foil gauge 12. absorbing rods.
Embodiment
Below in conjunction with accompanying drawing, by the description to embodiment, the present invention will be further described:
As shown in Figure 1, a kind of unidirectional pressure of the present invention is cut one dynamic stress and strain proving installation, comprise bullet emitter, bullet emitter comprises gas cylinder 1, the two ends of gas cylinder 1 are installed into respectively air valve 2 and the valve 3 of giving vent to anger, the valve 3 of giving vent to anger is connected with gun tube 4, in gun tube 4, be provided with bullet 5, the endpiece of gun tube 4 is provided with to press cuts incident bar 6, and pressure is cut incident bar 6 and is not contacted with gun tube 4, the end that pressure is cut incident bar 6 is provided with to press cuts transmission bar 7, pressure is cut incident bar 6 and is cut between transmission bar 7 and be flexibly connected by annulus 8 with pressure, pressure is cut the end of incident bar 6 and head end that pressure is cut transmission bar 7 and is installed respectively and press haircut 9, press haircut 9 to be all positioned at annulus 8 for two, press the lateral surface of haircut 9 to be all set to inclined-plane for two, and press the inclined-plane of haircut 9 parallel to each other for two, between the inclined-plane of two pressure haircuts 9, place test material 10, pressure is cut incident bar 6 and is pressed the foil gauge 11 of all fitting on the body of rod cut transmission bar 7, gun tube 4, pressure is cut incident bar 6, press haircut 9, the axis that pressure is cut transmission bar 7 is all positioned at same level.
Adopt technique scheme, in pressure, cut the end of incident bar 6 and press the head end of cutting transmission bar 7 that pressure haircut 9 is installed, and will press the lateral surface of haircut 9 to be arranged to respectively inclined-plane, when bullet 5 is cut incident bar 6 formation wave of compression from the interior ejaculation shock of gun tube 4 pressure, wave of compression is delivered to the inclined-plane of pressing haircut 9, and act on test material 10, make to press haircut 9 to impact loading to test material 10, and can cut out loading, because pressure is cut incident bar 6 and pressure and is cut and be connected annulus 8 between transmission bar 7, thereby the radial force acting on pressure haircut 9 is able to balance by annulus 8, avoided pressure haircut 9 that radial displacement occurs.
For ease of test material 10 being put into two, press between haircut 9, can opening be set in the centre position of the first half of annulus 8, the length of this opening, width need to be greater than respectively length, the width of test material 10, to guarantee that test material 10 can put into annulus 8; For pressure after reducing bullet 5 shocks is cut transmission bar 7 and is pressed the pressure of cutting incident bar 6, can in pressure, cut the end connection absorbing rod 12 of transmission bar 7, the axis of absorbing rod 12 is positioned at same level with the axis that pressure is cut transmission bar 7.
There are radial oscillations in bullet 5 when avoiding emission bullet 5, can make gas outlet section, gun tube 4 sections of gas cylinder 1, give vent to anger valve 3 sections and bullet 5 end sections be set to the same, guarantees that bullet emitter keeps coupling impermeability; For avoiding transmitting inhomogeneous phenomenon because ratio of damping difference causes wave of compression, can will press haircut 9, pressure to cut incident bar 6, press the section of cutting transmission bar 7 to be arranged to equally, the making material adopting is also consistent, and makes to press the section of haircut 9 consistent with bullet 5 end sections.
It is 30 ° or 45 ° or 60 ° that the present invention presses the inclined-plane of haircut 9, specifically can select according to the actual requirements or make the pressure haircut 9 of other degree of tilt.
The mentioned annulus 8 of the present invention and pressure are cut incident bar 6 and pressure and are cut transmission bar 7 and be flexibly connected and refer to, annulus 8 is cut incident bar 6 and is pressed the body of rod of cutting transmission bar 7 to avoid fitting tightly with pressure, and can cut incident bar 6 and press the axis direction of cutting transmission bar 7 to slide along pressing.
The present invention presses haircut 9 to cut incident bar 6 and pressure with pressure respectively and cuts transmission bar 7 junctions and fit tightly, and can in joint place, can smear vaseline or other lipid materials guarantee its tightness simultaneously.
Above-described is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, and these all belong to protection scope of the present invention.
Claims (5)
1. a unidirectional pressure is cut one dynamic stress and strain proving installation, comprise bullet emitter, described bullet emitter comprises gas cylinder (1), the two ends of gas cylinder (1) are respectively equipped with air intake valve (2) and the valve of giving vent to anger (3), the valve (3) of giving vent to anger is connected with gun tube (4), in gun tube (4), be provided with bullet (5), it is characterized in that: the endpiece of described gun tube (4) is provided with to press cuts incident bar (6), the end that pressure is cut incident bar (6) is provided with to press cuts transmission bar (7), pressure is cut incident bar (6) and is cut between transmission bar (7) and be flexibly connected by annulus (8) with pressure, described pressure is cut the end of incident bar (6) and head end that pressure is cut transmission bar (7) and is installed respectively and press haircut (9), press haircut (9) to be all positioned at annulus (8) for described two, press the lateral surface of haircut (9) to be all set to inclined-plane for two, and press the inclined-plane of haircut (9) parallel to each other for two, between the inclined-plane of two pressure haircuts (9), place test material (10), described pressure is cut incident bar (6) and is pressed on the body of rod of cutting transmission bar (7) foil gauge (11) is all installed, described gun tube (4), pressure is cut incident bar (6), press haircut (9), the axis that pressure is cut transmission bar (7) is all positioned at same level.
2. unidirectional pressure according to claim 1 is cut one dynamic stress and strain proving installation, it is characterized in that: the centre position of described annulus (8) first half is provided with opening, and the length of opening, width are greater than respectively length, the width of test material (10).
3. unidirectional pressure according to claim 2 is cut one dynamic stress and strain proving installation, it is characterized in that: the end that described pressure is cut transmission bar (7) connects absorbing rod (12), and the axis that the axis of described absorbing rod (12) and pressure are cut transmission bar (7) is positioned at same level.
4. unidirectional pressure according to claim 1 is cut one dynamic stress and strain proving installation, it is characterized in that: the gas outlet section of described gas cylinder (1), gun tube (4) section, the valve of giving vent to anger (3) section and bullet (5) end section are all consistent.
5. unidirectional pressure according to claim 4 is cut one dynamic stress and strain proving installation, it is characterized in that: described pressure haircut (9), press and to cut incident bar (6), press and cut the section of transmission bar (7) and make 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 |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410446697.5A 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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| CN104198307A true CN104198307A (en) | 2014-12-10 |
| CN104198307B CN104198307B (en) | 2016-08-17 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949891A (en) * | 2015-06-26 | 2015-09-30 | 中国科学院地质与地球物理研究所 | Method for testing large scale earth-rock aggregate dynamic shear strength |
| CN104990809A (en) * | 2015-06-26 | 2015-10-21 | 中国科学院地质与地球物理研究所 | Test method of repeated direct shearing strength of landslide foundation covering face |
| CN105043867A (en) * | 2015-06-26 | 2015-11-11 | 中国科学院地质与地球物理研究所 | Method for testing residual strength of soil-rock mixture |
| CN105115831A (en) * | 2015-06-26 | 2015-12-02 | 中国科学院地质与地球物理研究所 | Coarse-grained soil shear strength testing method under different hydraulic gradient effects |
| CN105115834A (en) * | 2015-06-26 | 2015-12-02 | 中国科学院地质与地球物理研究所 | Coarse-grained soil shear strength testing method under low temperature condition |
| CN105115832A (en) * | 2015-06-26 | 2015-12-02 | 中国科学院地质与地球物理研究所 | Geotechnical oblique shear strength test apparatus considering seepage flow impact |
| 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 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949891A (en) * | 2015-06-26 | 2015-09-30 | 中国科学院地质与地球物理研究所 | Method for testing large scale earth-rock aggregate dynamic shear strength |
| CN104990809A (en) * | 2015-06-26 | 2015-10-21 | 中国科学院地质与地球物理研究所 | Test method of repeated direct shearing strength of landslide foundation covering face |
| CN105043867A (en) * | 2015-06-26 | 2015-11-11 | 中国科学院地质与地球物理研究所 | Method for testing residual strength of soil-rock mixture |
| CN105115831A (en) * | 2015-06-26 | 2015-12-02 | 中国科学院地质与地球物理研究所 | Coarse-grained soil shear strength testing method under different hydraulic gradient effects |
| CN105115834A (en) * | 2015-06-26 | 2015-12-02 | 中国科学院地质与地球物理研究所 | Coarse-grained soil shear strength testing method under low temperature condition |
| CN105115832A (en) * | 2015-06-26 | 2015-12-02 | 中国科学院地质与地球物理研究所 | Geotechnical oblique shear strength test apparatus considering seepage flow impact |
| 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 |
| 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 |
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| CN104198307B (en) | 2016-08-17 |
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