CN208568445U - The leveling auxiliary device of Hopkinson bar test - Google Patents
The leveling auxiliary device of Hopkinson bar test Download PDFInfo
- Publication number
- CN208568445U CN208568445U CN201821082098.XU CN201821082098U CN208568445U CN 208568445 U CN208568445 U CN 208568445U CN 201821082098 U CN201821082098 U CN 201821082098U CN 208568445 U CN208568445 U CN 208568445U
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- Prior art keywords
- bar
- incident
- auxiliary device
- bracket
- fixed plate
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- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 title claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 55
- 230000001105 regulatory effect Effects 0.000 claims description 20
- 238000007689 inspection Methods 0.000 claims description 4
- 238000011002 quantification Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 239000003550 marker Substances 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000009527 percussion Methods 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000009863 impact test Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a kind of leveling auxiliary device of Hopkinson bar test, it is the bracket of horizontal plane including upper surface, and ballistic projections gun tube, incident bar and the transmission bar for being installed on bracket and setting gradually, bullet is provided in ballistic projections gun tube, bullet, incident bar and transmission bar are located on same axis, further include levelness detector and fixed device；Fixed device includes fixed plate and fixing piece, and levelness detector is mounted in fixed plate by fixing piece；Fixed plate is set to incident bar and transmission bar deviates from the side of bracket, and parallel with rack upper surface.The utility model structure is simple, it is easy for installation, the influence that whether is hit of bullet, incident bar and transmission bar, which is intuitively observed, by levelness detector produces deviation, the levelness of observation bullet, incident bar and transmission bar in real time, according to the scale marker of level(l)ing bubble in levelness detector, it can be achieved that the quantification of rod piece leveling.
Description
Technical field
The utility model relates to arrive the technical field of experimental rig, specially a kind of leveling auxiliary of Hopkinson bar test
Device.
Background technique
Hopkinson bar is a kind of experimental provision that can be used to carry out MATERIALS ' DYNAMIC experimental study, is widely used in surveying
The dynamic characteristics of test material material, the key of Hopkinson bar impact test success or failure are to test neutron bomb transmitting gun tube and enter
It penetrates bar contact face, incident bar and transmission bar contact face to fit closely, and bullet, incident bar, transmission bar are coaxially disposed.Mesh
Before, it observes by the naked eye, the touch of hand can substantially recognize whether the end face of bar misplaces, and then judge bullet, incidence
Whether bar, transmission bar are coaxial.Technology at present, on the one hand can not real-time monitoring bullet, incident bar, three bar of transmission bar concentricity；
On the other hand larger to the dependence of equipment use experience, rod piece can not be leveled process quantification.
Utility model content
The main purpose of the utility model is to provide a kind of tune of Hopkinson bar test that concentricity can be monitored in real time
Flat auxiliary device.
The utility model proposes a kind of leveling auxiliary devices of Hopkinson bar test, are horizontal plane including upper surface
Bracket, and the ballistic projections gun tube, incident bar and the transmission bar that are installed on bracket and set gradually, the ballistic projections gun tube
It is inside provided with bullet, it further includes levelness detector that the bullet, the incident bar and the transmission bar, which are located on same axis,
With fixed device；
The fixed device includes fixed plate and fixing piece, and the levelness detector is fixed by fixing piece installation
In in the fixed plate；
The fixed plate is set to the side that the incident bar and the transmission bar deviate from the bracket, and with the bracket
Upper surface is parallel.
Further, the levelness detector includes the first levelling tube and the second level pipe；The first levelling tube water
It is flat to be set in the fixed plate, and axis is parallel with the incident bar axis direction；The second level pipe is horizontally placed on
In the fixed plate, and its axis is vertical with the first levelling tube axis.
Further, the fixing piece includes the first fixing piece and the second fixing piece；First fixing piece passes through described
First levelling tube is simultaneously screwed with the fixed plate；Second fixing piece passes through fixed described in the second level Guan Bingyu
Plate is screwed.
It further, further include rod bearing and regulating part；The rod bearing and is worn perpendicular to the upper surface of the bracket
The incident bar is simultaneously fixed with the incident bar；The rod bearing connects the bracket, the regulating part by the regulating part
Edge is moved up and down perpendicular to the rack upper surface direction, and drives the relatively described rack upper surface activity of the rod bearing.
It further, further include rod set ring, the rod set ring wears and is fixed on the incident bar；The rod bearing is worn
It covers the rod set ring and the incident bar is interference fitted.
Further, the fixed plate is fixedly installed on first end face of the rod bearing far from the bracket, and described
First end face is parallel with the rack upper surface.
Further, the rod bearing includes 4, is fixedly installed on the incident bar and the transmission bar both ends respectively.
Further, levelness detector is provided on each rod bearing.
Further, first levelling tube and the second level Guan Jun are equipped with scale along its axis direction.
Further, the regulating part includes screw or bolt.
The leveling auxiliary device of the Hopkinson bar test of the utility model has an advantageous effect in that, by the way that level is arranged
Pipe intuitively observes bullet, whether incident bar and transmission bar are hit, and influence produces deviation, observe in real time bullet, incident bar and
The concentricity of transmission bar, and incident bar or transmission bar can be adjusted by regulating part, keep bullet, incident bar and transmission bar coaxial, ties
Structure is simple, high-volume is facilitated to test.
Detailed description of the invention
Fig. 1 is the leveling assistant apparatus structure schematic diagram of an embodiment of the present invention Hopkinson bar test；
Fig. 2 is the main view of the portion a enlarged drawing in Fig. 1；
Fig. 3 is the left view of Fig. 2；
Fig. 4 is the top view of Fig. 2；
Fig. 5 is that the first level tube bubble of the leveling auxiliary device of an embodiment of the present invention Hopkinson bar test is inclined
Position schematic diagram；
Fig. 6 is the second level pipe bubble of the leveling auxiliary device of another embodiment Hopkinson bar test of the utility model
Deviation schematic diagram；
Fig. 7 is the first, second level of the leveling auxiliary device of another embodiment of the utility model Hopkinson bar test
Pipe bubble generates deviation schematic diagram.
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
It should be appreciated that specific embodiment described herein is only used to explain the utility model, it is not used to limit this
Utility model.
As shown in Figs 1-4, a kind of leveling auxiliary device of Hopkinson bar test of the utility model is disclosed, including upper
Surface be horizontal plane bracket 25, and be installed on bracket 25 and set gradually ballistic projections gun tube 1, incident bar 5 and thoroughly
Bar 8 is penetrated, bullet 2 is provided in ballistic projections gun tube 1, bullet 2, incident bar 5 and transmission bar 8 are located on same axis, further include
Levelness detector 14 and fixed device；Fixed device includes fixed plate 17 and fixing piece 19, and levelness detector 14 passes through solid
Determine part 19 to be mounted in fixed plate 17；Fixed plate 17 is set to incident bar 5 and transmission bar 8 deviates from the side of bracket 25, and
It is parallel with 25 upper surface of bracket.
Hopkinson bar test is a kind of experiment that can be used to carry out MATERIALS ' DYNAMIC experimental study.The basic principle is that:
Sample 7 is clipped between incident bar 5 and transmission bar 8；Air pressure is provided by air compressor machine and drives bullet 2, makes bullet 2 with certain speed
It hits incident bar 5 and generates impact load, impact load propagates incident pulse in incident bar 5；Sample 7 is under incident pulse effect
On the other hand high-speed deformation propagates transmitted pulse to transmission bar 8, in stress pulse on the one hand to 5 propagation reflections pulse of incident bar
It acts on lower transmission bar 8 and continues impact absorbing bar 9, last 9 relief means 10 of absorbing rod complete test；It is pasted onto incident bar 5
It is transferred in waveform processor 12 with the 6 acquisition pulse information of resistance strain gage on transmission bar 8, and by data processor 13
The measurement record of high dynamic strain indicator 11 is managed, laser velocimeter 3 measures entering for bullet 2 between ballistic projections gun tube 1 and incident bar 5
Firing rate degree.
In the present embodiment, 25 upper surface of bracket is horizontal plane, wherein bracket 25 is rigid support, by ballistic projections big gun
Pipe 1, incident bar 5 and transmission bar 8 are set in turn on bracket 25, and bullet 2, incident bar 5 and transmission bar 8 are coaxially disposed.At this
In embodiment, levelness detector 14 is mounted on fixed plate, and fixing piece can be to 14 horizontal direction of levelness detector
Inclination is calibrated, and levelness detector 14 includes levelling tube or plane monitoring-network disk, and fixing piece 16 can use screw or bolt；
Wherein, levelness is ballistic projections gun tube 1, incident bar 5 and transmission bar 8 relative to the horizontal inclined degree of bracket 25, is passed through
Levelness detector 14 carries out real-time monitoring to the levelness of bullet 2, incident bar 5 and transmission bar 8, improves the essence in experimentation
Accuracy.
In the present embodiment, levelness detector 14 includes the first levelling tube 18 and the second level pipe 20；First levelling tube
18 are horizontally placed in fixed plate, and its axis is parallel with 5 axis direction of incident bar；The second level pipe 20 is horizontally placed on fixation
On plate 17, and its axis is vertical with 18 axis of the first levelling tube.First levelling tube 18 and the second level pipe 20 are set for testing
In the process, whether real-time monitoring bullet 2, incident bar 5 and transmission bar 8 are coaxial, judge incident bar 5 with respect to 25 upper surface of bracket
Tilted upward, wherein levelling tube is sealed glass tubes, inside pipe wall longitudinally wear into it is arc-shaped, manage in contain alcohol or ether or
The liquid of the two mixing, and there are a bubbles, by the bubble of the first levelling tube 18 of observation and the second level pipe 20 convenient for experiment
Whether personnel's real-time detection ballistic projections gun tube 1, incident bar 5 and transmission bar 8 are coaxial, and structure is simple, easy to operate.
In the present embodiment, fixing piece includes the first fixing piece 19 and the second fixing piece 21；First fixing piece 19 passes through the
One levelling tube 18 is simultaneously screwed with fixed plate 17；Second fixing piece 21 passes through the second level pipe 20 and consolidates with 17 screw thread of fixed plate
It is fixed；First fixing piece 19 acts on the first levelling tube 18, has both been capable of fixing in 18 horizontal direction of the first levelling tube relative to rod bearing 4
Position, and can the first levelling tube 18 occur horizontal direction on tilt when, in time adjust regulating part 16 make ballistic projections gun tube
1, incident bar 5, transmission bar 8 are coaxial；Second fixing piece 21 acts on the second level pipe 20, and it is vertical to be both capable of fixing the second level pipe 20
Position on direction relative to rod bearing 4, and can be adjusted in time when the second level pipe 20 occurs to tilt on vertical direction
Part 16 keeps bullet 2, incident bar 5, transmission bar 8 coaxial.
It in the present embodiment, further include rod bearing 4 and regulating part 16；Rod bearing 4 and is worn perpendicular to the upper surface of bracket 25
It covers incident bar 5 and is fixed with incident bar 5；Regulating part 16 is moved up and down along perpendicular to 25 upper surface direction of bracket, and driven rod branch
Opposite 25 upper surface of bracket of seat 4 is up and down.Rod bearing 4 passes through 16 connecting bracket 25 of regulating part, wherein regulating part 16 uses spiral shell
Nail twists regulating part 16, swing offset is converted to the displacement on vertical direction, regulating part 16 is along perpendicular to 25 upper surface of bracket
Direction moves up and down, and drives rod bearing 4 up and down with respect to 25 upper surface of bracket, wherein rod bearing 4 inclines relative to bracket 25
Oblique degree is little, therefore regulating part 16 controls rod bearing 4 with respect to about 25 slight fluctuation of bracket.
It in the present embodiment, further include rod set ring 15, rod set ring 15 wears and is fixed on incident bar 5；Rod bearing 4 is worn
Rod set ring 15 and incident bar 5 are interference fitted.By mounting rod lantern ring 15, facilitate installing and dismounting, it in other embodiments, can be with
It is by screw that rod bearing 4 and incident bar 5 is fixed.
In the present embodiment, fixed plate 17 is fixedly installed on first end face of the rod bearing 4 far from bracket 25, and first end face
It is parallel with 25 upper surface of bracket.
In the present embodiment, rod bearing 4 includes 4, is fixedly installed on 8 both ends of incident bar 5 and transmission bar respectively.Facilitate sight
The levelness of incident bar 5 and transmission bar 8 is examined, and by adjusting regulating part 16, and then adjust rod bearing 4, quickly adjusts bullet hair
It is horizontal coaxial to penetrate gun tube 1, incident bar 5, transmission bar 8.
In the present embodiment, levelness detector 14 is provided on each rod bearing 4.Convenient for detecting bullet 2, incident bar
5, the levelness of 8 trial stem of transmission bar.
In the present embodiment, the first levelling tube 18 and the second level pipe 20 are equipped with scale along its axis direction.First water
Quasi- pipe 18 and the second level pipe 20 along its axis direction be equipped on pipe face between be divided into the division line scale of 2mm；On levelling tube
Scale be uniformly distributed in surface, the midpoint of graduation claims the zero point of levelling tube, zero crossing and inside pipe wall in longitudinal tangent straight line
Referred to as level tube axis, levelling tube is interior to be equipped with level(l)ing bubble, and when levelling tube shifts, level(l)ing bubble is opposite to shift, when
When the central point of bubble is overlapped with zero point, claim bubble placed in the middle, level tube axis is horizontally situated when bubble is placed in the middle, in levelling tube
It the position of level(l)ing bubble can by the scale marker of level(l)ing bubble in levelness detector 14 come the amount for marking levelling tube to deviate
Realize the quantification that incident bar 5, transmission bar 8 level.
In the present embodiment, regulating part 16 includes screw or bolt.
In the present embodiment, it before on-test, adjusts from top to bottom, finally makes the first water in levelness detector 14
The level(l)ing bubble of quasi- pipe 18 and the second level pipe 20 is in dead-center position, and testing equipment is made to enter working condition, by bullet 2,
Reach test requirements document standard in incident bar 5,8 three axial adjustment pair of transmission bar, fixed rod bearing 4 is motionless, pushes up by adjusting rod bearing 4
Spiral the first fixing piece 19, the second fixing piece 21 of portion's levelling tube, so that 20 liang of the first levelling tube 18, the second level pipe direction water
Quasi- pipe bubble is in horizontality between two parties, and so far, bullet 2, incident bar 5,8 three axis of transmission bar are coaxial, the first, second levelling tube water
In in normal times, meet test requirements document, impact test can be started.During the test, if test generates vibration, bullet 2, incident bar
5,8 three bar of transmission bar shifts, and level(l)ing bubble is then adjusted in time not in the zero point of levelling tube scale in levelness detector 14
Screw 16a, 16b, 16c, 16d on rod bearing 4, make the level(l)ing bubble on levelness detector return to zero point, in test process
Whether monitoring bullet 2, incident bar 5,8 three axis of transmission bar are coaxial in time,.Level in inspection AQL degree detector after the end of the test
Bubble, is adjusted to zero place, and lower battery of tests is carried out in preparation.
In the first specific embodiment, as shown in figure 5, during the test, passing through first water at 4 top of monitoring rod bearing
Quasi- pipe 18 and the second level pipe 20 judge whether bullet 2, incident bar 5, transmission bar 8 are coaxial.Bullet 2 is generated by transmitting gun tube 1
Power source transmitting, bullet 2 impacts incident bar 5, and the elliptical gear transmission bar 8 under the percussion of bullet 2 of incident bar 5 answering
Transmission bar 8 continues impact absorbing bar 9 under power impulse action, and last 9 relief means 10 of absorbing rod complete test.Impact process
Middle discovery 18 bubble left avertence of the first levelling tube keeps screw 16c, 16d on rod bearing 4 fixed, while adjusting rod bearing 4
On screw 16a, 16b, adjusted according to the scale that is identified on levelling tube, so that level(l)ing bubble is again placed in the middle, 4 rod bearings are examined in school
4 level(l)ing bubbles are in level Shaft alignment state can carry out test again.
In the second specific embodiment, as shown in fig. 6, the power source transmitting that bullet 2 is generated by transmitting gun tube 1, bullet 2
Impact incident bar 5, the elliptical gear transmission bar 8 under the percussion of bullet 2 of incident bar 5, the transmission bar 8 under stress pulse effect
Continue impact absorbing bar 9, last 9 relief means 10 of absorbing rod complete test.It is inclined on 20 bubble of the second level pipe when finding,
It keeps screw 16b, 16d on rod bearing 4 fixed, while adjusting screw 16a, 16c on support 4, so that the second level
20 bubble of pipe is placed in the middle, and school 44 level(l)ing bubbles of rod bearing of inspection are in level Shaft alignment state can carry out test again.
In third specific embodiment, as shown in fig. 7, the power source transmitting that bullet 2 is generated by transmitting gun tube 1, bullet 2
Impact incident bar 5, the elliptical gear transmission bar 8 under the percussion of bullet 2 of incident bar 5, the transmission bar 8 under stress pulse effect
Continue impact absorbing bar 9, last 9 relief means 10 of absorbing rod complete test.When the first, second level tube bubble of discovery is equal
Deviation occurs, the first step first adjusts 20 bubble of the second level pipe, keeps rod bearing 4 screwing 16b, 16d fixed, adjusts simultaneously
Pole support 4 screwing 16a, 16c, so that 20 bubble of the second level pipe is placed in the middle, second step adjusts 18 bubble of the first levelling tube again,
It keeps screw 16c, 16d on rod bearing 4 fixed, while adjusting screw 16a, 16b on rod bearing 4, so that the first water
Quasi- 18 bubble of pipe is placed in the middle, and school 4 support level(l)ing bubbles of inspection are in level Shaft alignment state can carry out test again.
A kind of device of Hopkinson pressure bar centering leveling auxiliary of the utility model, is intuitively seen by the way that levelling tube is arranged
It examines the influence that whether is hit of bullet 2, incident bar 5 and transmission bar 8 and produces deviation, observe bullet 2, incident bar 5 and transmission in real time
The levelness of bar 8, and then incident bar 5 or transmission bar 8 are adjusted by regulating part 16, keep bullet 2, incident bar 5 and transmission bar 8 same
Axis, structure is simple, high-volume is facilitated to test.
The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model,
Equivalent structure or equivalent flow shift made by using the description of the utility model and the drawings, is directly or indirectly transported
Used in other related technical areas, it is also included in the patent protection scope of the utility model.
Claims (10)
1. a kind of leveling auxiliary device of Hopkinson bar test, is the bracket of horizontal plane, and be installed on branch including upper surface
On frame and the ballistic projections gun tube, incident bar and the transmission bar that set gradually, it is provided with bullet in the ballistic projections gun tube, it is described
Bullet, the incident bar and the transmission bar are located on same axis, which is characterized in that further include levelness detector and fixation
Device；
The fixed device includes fixed plate and fixing piece, and the levelness detector is mounted on institute by the fixing piece
It states in fixed plate；
The fixed plate is set to the side that the incident bar and the transmission bar deviate from the bracket, and with table on the bracket
Face is parallel.
2. the leveling auxiliary device of Hopkinson bar test according to claim 1, which is characterized in that the levelness inspection
Surveying instrument includes the first levelling tube and the second level pipe；
First levelling tube is horizontally placed in the fixed plate, and axis is parallel with the incident bar axis direction；
The second level pipe is horizontally placed in the fixed plate, and its axis is vertical with the first levelling tube axis.
3. the leveling auxiliary device of Hopkinson bar test according to claim 2, which is characterized in that the fixing piece packet
Include the first fixing piece and the second fixing piece；
First fixing piece passes through first levelling tube and is screwed with the fixed plate；
Second fixing piece passes through fixed plate described in the second level Guan Bingyu and is screwed.
4. the leveling auxiliary device of Hopkinson bar test according to claim 1, which is characterized in that further include rod bearing
And regulating part；
The rod bearing is perpendicularly fixed at the upper surface of the bracket, and wears the incident bar and fix with the incident bar；
The rod bearing is fixedly connected with the bracket by the regulating part, and the regulating part is along perpendicular to the rack upper surface
Direction moves up and down, and drives the relatively described rack upper surface of the rod bearing up and down.
5. the leveling auxiliary device of Hopkinson bar test according to claim 4, which is characterized in that further include rod set
Ring, the rod set ring wear and are fixed on the incident bar；
The rod bearing wears the rod set ring and the incident bar is interference fitted.
6. the leveling auxiliary device of Hopkinson bar test according to claim 4 or 5, which is characterized in that the fixation
Plate is fixedly installed on first end face of the rod bearing far from the bracket, and the first end face and the rack upper surface are flat
Row.
7. the leveling auxiliary device of Hopkinson bar test according to claim 4, which is characterized in that the rod bearing packet
4 are included, is fixedly installed on the incident bar and the transmission bar both ends respectively.
8. the leveling auxiliary device of Hopkinson bar test according to claim 7, which is characterized in that each bar branch
Levelness detector is provided on seat.
9. the leveling auxiliary device of Hopkinson bar test according to claim 2, which is characterized in that first level
Pipe and the second level Guan Jun are equipped with scale along its axis direction.
10. the leveling auxiliary device of Hopkinson bar test according to claim 4, which is characterized in that the regulating part
Including screw or bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821082098.XU CN208568445U (en) | 2018-07-06 | 2018-07-06 | The leveling auxiliary device of Hopkinson bar test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821082098.XU CN208568445U (en) | 2018-07-06 | 2018-07-06 | The leveling auxiliary device of Hopkinson bar test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208568445U true CN208568445U (en) | 2019-03-01 |
Family
ID=65491718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821082098.XU Expired - Fee Related CN208568445U (en) | 2018-07-06 | 2018-07-06 | The leveling auxiliary device of Hopkinson bar test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208568445U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112665995A (en) * | 2020-12-17 | 2021-04-16 | 武汉理工大学 | Parallel Hopkinson bar simulation instant unloading test device and method |
| CN113092239A (en) * | 2021-04-12 | 2021-07-09 | 合肥工业大学 | Hopkinson pressure bar device capable of being quickly and accurately adjusted and aligned |
-
2018
- 2018-07-06 CN CN201821082098.XU patent/CN208568445U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112665995A (en) * | 2020-12-17 | 2021-04-16 | 武汉理工大学 | Parallel Hopkinson bar simulation instant unloading test device and method |
| CN112665995B (en) * | 2020-12-17 | 2024-03-22 | 武汉理工大学 | Parallel-arranged Hopkinson bar simulation instant unloading test device and method |
| CN113092239A (en) * | 2021-04-12 | 2021-07-09 | 合肥工业大学 | Hopkinson pressure bar device capable of being quickly and accurately adjusted and aligned |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190301 |
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| CF01 | Termination of patent right due to non-payment of annual fee |