CN107941606A - A kind of separate type Hopkinson pull rod test fixture - Google Patents
A kind of separate type Hopkinson pull rod test fixture Download PDFInfo
- Publication number
- CN107941606A CN107941606A CN201711399307.3A CN201711399307A CN107941606A CN 107941606 A CN107941606 A CN 107941606A CN 201711399307 A CN201711399307 A CN 201711399307A CN 107941606 A CN107941606 A CN 107941606A
- Authority
- CN
- China
- Prior art keywords
- section
- main clamp
- locking nut
- cylinder
- pull rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
Abstract
The invention discloses a kind of separate type Hopkinson pull rod test fixture, 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, its 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.Tested for separate type Hopkinson pull rod.
Description
Technical field
The present invention relates to material impact dynamic test studying technological domain, particularly separate type Hopkinson pull rod dynamic
Tension test.
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 some test material raw sheet materials, does not reach point
Required diameter is threadedly coupled from formula Hopkinson pull rod, the cylinder sample that diameter is met the requirements, Zhi Nengjia can not be processed into
Work flakiness shape sample.Need to design new fixture for similar test material to meet to test connection request.For thin slice
Shape sample, currently known test clamp have separate type Hopkinson pull bar test piece clamp device (CN201320533953.5),
Such a 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, improved test efficiency, usually need
Prepare multigroup fixture, so that battery of tests, such a gluing mode need under development during previous group fixture dispergation
More fixture.For the dynamic tensile experiment fixture described in CN201520417815.X, the connection mode of complexity is employed, is related to
And to the higher conical surface of processing request, and required main clamp, intermediate plate and the fixture that is screwed still suffer from after the completion of assembling
Compare more gaps, disturb the propagation of stress wave, influence test effect.Separated for one kind 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-section to change greatly, disturbing 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.
The content of the invention
It is an object of the invention to provide a kind of separate type Hopkinson pull rod test fixture, it can effectively solve flake
The clamping problem of the dynamic tensile experiment of test button.
The purpose of the present invention 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, its 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 that nut coordinates；The horizontal plane of the semicolumn is equipped with the groove consistent with main clamp, and locking nut is to contain internal thread
Circular ring structure.
The Blind locating holes are located at the first half center of section perpendicular end surface.
The main clamp, sub-folder tool, material and the material of experimental rig incident bar and transmission bar of locking nut keep one
Cause, the body diameter after assembling is consistent with incident bar and transmission shank diameter.
It is compared with the prior art, the present invention has the following advantages：
1st, the connection mode gluing compared to sample can save test period, improve test efficiency, reduce fixture number；
2nd, simple in structure compared to existing stretching clamp, processing technology is easy, reduces processing cost；Clamp structure at the same time
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.
Brief description of the drawings
Fig. 1 is present clip assembling structure sectional view
Fig. 2 is main clamp structure diagram of the present invention
Fig. 3 is sub-folder lamps structure schematic diagram of the present invention
Fig. 4 is locking nut structure schematic diagram of the present invention
Fig. 5 is sample schematic diagram of the present invention
Embodiment
The invention will be further described 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
Three parts, main clamp 1 is placed on in the groove of sub-folder tool 2, being locked by locking nut 3 before experiment by sample 4.
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：Cross the axial tangent line of 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 that end positioning cylinder coordinates.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 its 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
Penetrate that the uniformity of bar and transmission bar is preferable, reduce the interference to stress wave propagation, improve test effect.
After the completion of 4 clamping of sample, incident bar and transmission bar screw thread of the sample 4 with experimental rig together with fixture can be connected
Connect, carry out dynamic tensile experiment.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be within protection scope of the present invention.
Claims (3)
1. a kind of separate type Hopkinson pull rod test fixture, including main clamp (1), sub-folder tool (2) and locking nut (3), its
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 that portion's positioning cylinder coordinates；Sub-folder tool (2) is semi-cylindrical in configuration, and its one end is equipped with and main clamp (1) perpendicular end surface
Blind locating holes coordinate positioning cylinder, the other end be equipped with locking nut (3) coordinate external screw thread；The horizontal plane of the semicolumn
Equipped with the groove consistent with main clamp (1), locking nut (3) is containing female circular ring structure.
A kind of 2. 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.
A kind of 3. separate type Hopkinson pull rod test fixture according to claim 1, it is characterised in that：The main clamp
(1), sub-folder tool (2), the material of material and experimental rig incident bar and transmission bar of locking nut (3) are consistent, after assembling
Body diameter and incident bar and transmission shank diameter be consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711399307.3A CN107941606A (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 |
|---|---|---|---|
| CN201711399307.3A CN107941606A (en) | 2017-12-22 | 2017-12-22 | A kind of separate type Hopkinson pull rod test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107941606A true CN107941606A (en) | 2018-04-20 |
Family
ID=61942155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711399307.3A Pending CN107941606A (en) | 2017-12-22 | 2017-12-22 | A kind of separate type Hopkinson pull rod test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107941606A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109323919A (en) * | 2018-11-21 | 2019-02-12 | 浙江大学 | A kind of split hopkinson press bar positioning device suitable for more size test specimens |
| CN110082193A (en) * | 2019-04-30 | 2019-08-02 | 马鞍山钢铁股份有限公司 | A kind of separate type Hopkinson pull bar test piece clamp and chucking method |
| CN111272539A (en) * | 2020-04-02 | 2020-06-12 | 合肥姜水动态力学实验技术有限公司 | Dynamic tensile test piece connecting device |
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| JP2008216082A (en) * | 2007-03-05 | 2008-09-18 | Ihi Corp | Dynamic tensile test method and device |
| KR20130034321A (en) * | 2011-09-28 | 2013-04-05 | 한국건설기술연구원 | Concrete tension test and method for split hopkinson tension bar |
| CN103439186A (en) * | 2013-08-29 | 2013-12-11 | 南京理工大学 | Separated Hopkinson pull bar test piece clamp device |
| CN104897461A (en) * | 2015-06-16 | 2015-09-09 | 南京理工大学 | Dynamic tension experiment fixture |
| CN105424470A (en) * | 2015-11-18 | 2016-03-23 | 太原理工大学 | Clamping device and experiment method for split Hopkinson torsion bar test piece |
| CN207556980U (en) * | 2017-12-22 | 2018-06-29 | 青岛西交检验检测科技有限公司 | A kind of separate type Hopkinson pull rod test fixture |
-
2017
- 2017-12-22 CN CN201711399307.3A patent/CN107941606A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008216082A (en) * | 2007-03-05 | 2008-09-18 | Ihi Corp | Dynamic tensile test method and device |
| KR20130034321A (en) * | 2011-09-28 | 2013-04-05 | 한국건설기술연구원 | Concrete tension test and method for split hopkinson tension bar |
| CN103439186A (en) * | 2013-08-29 | 2013-12-11 | 南京理工大学 | Separated Hopkinson pull bar test piece clamp device |
| CN104897461A (en) * | 2015-06-16 | 2015-09-09 | 南京理工大学 | Dynamic tension experiment fixture |
| CN105424470A (en) * | 2015-11-18 | 2016-03-23 | 太原理工大学 | Clamping device and experiment method for split Hopkinson torsion bar test piece |
| CN207556980U (en) * | 2017-12-22 | 2018-06-29 | 青岛西交检验检测科技有限公司 | A kind of separate type Hopkinson pull rod test fixture |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109323919A (en) * | 2018-11-21 | 2019-02-12 | 浙江大学 | A kind of split hopkinson press bar positioning device suitable for more size test specimens |
| CN109323919B (en) * | 2018-11-21 | 2023-12-29 | 浙江大学 | Separated Hopkinson pressure bar positioning device suitable for multi-size test piece |
| CN110082193A (en) * | 2019-04-30 | 2019-08-02 | 马鞍山钢铁股份有限公司 | A kind of separate type Hopkinson pull bar test piece clamp and chucking method |
| CN111272539A (en) * | 2020-04-02 | 2020-06-12 | 合肥姜水动态力学实验技术有限公司 | Dynamic tensile test piece connecting device |
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