CN207556980U - A kind of separate type Hopkinson pull rod test fixture - Google Patents
A kind of separate type Hopkinson pull rod test fixture Download PDFInfo
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- CN207556980U CN207556980U CN201721809517.0U CN201721809517U CN207556980U CN 207556980 U CN207556980 U CN 207556980U CN 201721809517 U CN201721809517 U CN 201721809517U CN 207556980 U CN207556980 U CN 207556980U
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- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 238000002474 experimental method Methods 0.000 description 9
- 238000004026 adhesive bonding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of separate type Hopkinson pull rod test fixtures, belong to mechanics of materials technical field.Main clamp is special-shaped cylindrical structure of the one end with section, and cylinder ends are equipped with the threaded rod being threadedly coupled with the incident bar and transmission bar of experimental rig, and section end is equipped with the external screw thread coordinated with locking nut；The section of main clamp cylinder is：The axial tangent line for crossing male threaded end center line intersects the notch of composition with the radial direction tangent line at cylinder 1/3rd, the horizontal plane of the section is equipped with the groove for placing sample, the perpendicular end surface of the section is equipped with the Blind locating holes coordinated with secondary clamp ends positioning cylinder, sub-folder tool is semi-cylindrical in configuration, one end is equipped with the positioning cylinder coordinated with the Blind locating holes of main clamp perpendicular end surface, and the other end is equipped with the external screw thread coordinated with locking nut；The horizontal plane of the semicolumn is equipped with the groove consistent with main clamp, and locking nut is containing female circular ring structure.It is tested for separate type Hopkinson pull rod.
Description
Technical field
The utility model is related to material impact dynamic test studying technological domains, particularly separate type Hopkinson pull rod
Dynamic tensile is tested.
Background technology
Separate type Hopkinson pull rod is to carry out material improved strain rate dynamic tensile to test common experimental rig.Separation
Formula Hopkinson pull rod experimental rig connects sample with entering when carrying out dynamic tensile experiment usually using the mode being threadedly coupled
Bar, transmission bar are penetrated, more satisfactory test effect can be reached.But the thickness low LCL of certain test material raw sheet materials, is not achieved point
Required diameter is threadedly coupled from formula Hopkinson pull rod, cannot be processed the cylinder sample that diameter is met the requirements, Zhi Nengjia
Work flakiness shape sample.Similar test material is needed to design new fixture to meet experiment connection request.For thin slice
Shape sample, currently known test clamp have separate type Hopkinson pull bar test piece clamp device (CN201320533953.5),
Such fixture uses multigroup tensile connector, between sample and connector by the way of Nian Jie.Due to by the way of gluing, trying
Sample can not be removed at once after testing and next group of sample is installed, to reduce test period, test efficiency is improved, usually need
Prepare multigroup fixture, so that battery of tests, the mode of such gluing need under development during previous group fixture dispergation
More fixture.For the dynamic tensile experiment fixture described in CN201520417815.X, complicated connection mode is employed, is related to
And to the higher conical surface of processing request, and required main clamp, intermediate plate and be screwed fixture after the completion of assembling there are still
Compare more gaps, interfere the propagation of stress wave, influence test effect.For a kind of separation described in CN201510793051.9
The clamping device and experimental method of formula Hopkinson pull rod test specimen, using briquetting and screw by way of physical load to test specimen
Connection is clamped, avoids non-uniform problem during composite material screw thread not easy to be processed and high intensity gluing knot, but
The defects of being that there are contact cross-sections to change greatly, interfering stress wave propagation.In conclusion the separation for laminar sample at present
Formula Hopkinson pull rod dynamic tensile is tested, and existing fixture has the defects of more, and based on this, designing one kind can avoid
The separate type Hopkinson pull rod test fixture of drawbacks described above.
Utility model content
The purpose of this utility model is to provide a kind of separate type Hopkinson pull rod test fixtures, it can effectively solve thin
The clamping problem of the dynamic tensile experiment of sheet metal sample.
The purpose of this utility model is achieved through the following technical solutions：
A kind of separate type Hopkinson pull rod test fixture, including main clamp, sub-folder tool and locking nut, main clamp one
The special-shaped cylindrical structure with section is held, cylinder ends are equipped with the spiral shell being threadedly coupled with the incident bar and transmission bar of experimental rig
Rasp bar, section end are equipped with the external screw thread coordinated with locking nut；The section of main clamp cylinder is：Cross male threaded end center
The axial tangent line of line intersects the notch of composition with the radial direction tangent line at cylinder 1/3rd, and the horizontal plane of the section, which is equipped with, to be placed
The groove of sample, the perpendicular end surface of the section are equipped with the Blind locating holes coordinated with secondary clamp ends positioning cylinder；Sub-folder tool is half
Cylindrical structure, one end are equipped with the positioning cylinder coordinated with the Blind locating holes of main clamp perpendicular end surface, and the other end is equipped with and locking
The external screw thread of nut cooperation；The horizontal plane of the semicolumn is equipped with the groove consistent with main clamp, and locking nut is contains internal thread
Circular ring structure.
The Blind locating holes are located at the first half center of section perpendicular end surface.
Material and the material of the experimental rig incident bar and transmission bar holding one of the main clamp, sub-folder tool, locking nut
It causes, the body diameter after assembling is consistent with incident bar and transmission shank diameter.
It is compared with the prior art, the utility model has the following advantages：
1st, test period can be saved compared to the connection mode of sample gluing, improves test efficiency, reduce fixture number；
2nd, simple in structure compared to existing stretching clamp, processing technology is easy, reduces processing cost；Clamp structure simultaneously
Material, section be consistent with incident bar and transmission bar, reduce the interference to stress wave propagation in experiment, test effect compared with
It is good.
Description of the drawings
Fig. 1 is the utility model fixture assembling structure sectional view
Fig. 2 is the utility model main clamp structure diagram
Fig. 3 is the utility model sub-folder lamps structure schematic diagram
Fig. 4 is the utility model locking nut structure schematic diagram
Fig. 5 is the utility model sample schematic diagram
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
With reference to Fig. 1, a kind of separate type Hopkinson pull rod test fixture, including main clamp 1, sub-folder tool 2, locking nut 3
Sample 4 is placed on main clamp 1 in the groove of sub-folder tool 2, being locked by locking nut 3 by three parts before experiment.
With reference to Fig. 2, the main clamp 1 is special-shaped cylindrical structure of the one end with section, and cylinder ends are equipped with and experiment
The threaded rod that the incident bar and transmission bar of device are threadedly coupled, section end are equipped with the external screw thread coordinated with locking nut 3；Main folder
The section for having 1 cylinder is：The axial tangent line for crossing male threaded end center line and the radial direction tangent line phase at cylinder 1/3rd
The notch formed is handed over, the horizontal plane of the section is equipped with the groove for placing sample 4, and the perpendicular end surface of the section is equipped with and sub-folder tool 2
The Blind locating holes of end positioning cylinder cooperation.The Blind locating holes are located at the first half center of section perpendicular end surface.
With reference to Fig. 3, the sub-folder tool 2 is semi-cylindrical in configuration, and one end is equipped with the Blind locating holes with 1 perpendicular end surface of main clamp
The positioning cylinder of cooperation, the other end are equipped with the external screw thread coordinated with locking nut 3；The horizontal plane of the semicolumn is equipped with and main clamp
1 consistent groove.
With reference to Fig. 4, the locking nut 3 is containing female circular ring structure, in main clamp 1, sub-folder tool 2 and sample 4
It is locked after assembling by locking nut 3.
The main clamp 1, sub-folder tool 2, the material of locking nut 3 and experimental rig incident bar and transmission bar are consistent,
Body diameter after assembling is consistent with incident bar and transmission shank diameter.This requirement can ensure that clamp structure enters with experimental rig
The consistency for penetrating bar and transmission bar is preferable, reduces the interference to stress wave propagation, improves test effect.
After the completion of 4 clamping of sample, sample 4 can be connected together with fixture with the incident bar of experimental rig and transmission bar screw thread
It connects, carries out dynamic tensile experiment.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on, should be covered by the scope of the present utility model within.
Claims (3)
1. a kind of separate type Hopkinson pull rod test fixture has (2) and locking nut (3) including main clamp (1), sub-folder,
It is characterized in that：Main clamp (1) is special-shaped cylindrical structure of the one end with section, and cylinder ends are equipped with the incidence with experimental rig
The threaded rod that bar and transmission bar are threadedly coupled, section end are equipped with the external screw thread coordinated with locking nut (3)；Main clamp (1) circle
The section of cylinder is：The axial tangent line for crossing male threaded end center line intersects composition with the radial direction tangent line at cylinder 1/3rd
Notch, the horizontal plane of the section is equipped with the groove for placing sample (4), and the perpendicular end surface of the section is equipped with and sub-folder tool (2) end
The Blind locating holes of portion's positioning cylinder cooperation；Sub-folder tool (2) is semi-cylindrical in configuration, and one end is equipped with and main clamp (1) perpendicular end surface
Blind locating holes cooperation positioning cylinder, the other end is equipped with the external screw thread that coordinates with locking nut (3)；The horizontal plane of the semicolumn
Equipped with the groove consistent with main clamp (1), locking nut (3) is containing female circular ring structure.
2. a kind of separate type Hopkinson pull rod test fixture according to claim 1, it is characterised in that：The positioning blind
Hole is located at the first half center of section perpendicular end surface.
3. a kind of separate type Hopkinson pull rod test fixture according to claim 1, it is characterised in that：The main clamp
(1), sub-folder tool (2), locking nut (3) the material of material and experimental rig incident bar and transmission bar be consistent, after assembling
Body diameter and incident bar and transmission shank diameter be consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721809517.0U CN207556980U (en) | 2017-12-22 | 2017-12-22 | A kind of separate type Hopkinson pull rod test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721809517.0U CN207556980U (en) | 2017-12-22 | 2017-12-22 | A kind of separate type Hopkinson pull rod test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207556980U true CN207556980U (en) | 2018-06-29 |
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ID=62660160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721809517.0U Active CN207556980U (en) | 2017-12-22 | 2017-12-22 | A kind of separate type Hopkinson pull rod test fixture |
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| Country | Link |
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| CN (1) | CN207556980U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941606A (en) * | 2017-12-22 | 2018-04-20 | 青岛西交检验检测科技有限公司 | A kind of separate type Hopkinson pull rod test fixture |
| CN111426555A (en) * | 2020-04-14 | 2020-07-17 | 西南交通大学 | Tensile fixture and experimental method for split Hopkinson pull rod thin sheet test piece |
| CN111952113A (en) * | 2020-06-23 | 2020-11-17 | 祥兴电气有限公司 | Vacuum circuit breaker on post |
| CN112857980A (en) * | 2020-11-06 | 2021-05-28 | 北京工业大学 | Test piece clamp for high-speed dynamic tensile test of material |
-
2017
- 2017-12-22 CN CN201721809517.0U patent/CN207556980U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941606A (en) * | 2017-12-22 | 2018-04-20 | 青岛西交检验检测科技有限公司 | A kind of separate type Hopkinson pull rod test fixture |
| CN111426555A (en) * | 2020-04-14 | 2020-07-17 | 西南交通大学 | Tensile fixture and experimental method for split Hopkinson pull rod thin sheet test piece |
| CN111426555B (en) * | 2020-04-14 | 2021-03-12 | 西南交通大学 | Tensile fixture and experimental method for split Hopkinson pull rod thin sheet test piece |
| CN111952113A (en) * | 2020-06-23 | 2020-11-17 | 祥兴电气有限公司 | Vacuum circuit breaker on post |
| CN112857980A (en) * | 2020-11-06 | 2021-05-28 | 北京工业大学 | Test piece clamp for high-speed dynamic tensile test of material |
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