CN103776687B - Three-dimensional Hopkinson pressure bar steering head device - Google Patents
Three-dimensional Hopkinson pressure bar steering head device Download PDFInfo
- Publication number
- CN103776687B CN103776687B CN201410013027.4A CN201410013027A CN103776687B CN 103776687 B CN103776687 B CN 103776687B CN 201410013027 A CN201410013027 A CN 201410013027A CN 103776687 B CN103776687 B CN 103776687B
- Authority
- CN
- China
- Prior art keywords
- steering head
- face
- end faces
- steering
- dimensional
- 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.)
- Expired - Fee Related
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Stress wave transfer in being tested the present invention relates to a kind of Impulsive load, particularly a kind of three-dimensional Hopkinson bar steering head device.The identical steering head of three size of the three-dimensional Hopkinson bar steering head device including annular array；One end that the steering head is contacted with incident bar is circular end face, and one end that steering head is contacted with test specimen is square end faces；The diameter of circular end face and the side ratio of square end faces are 50：48, the angle of circular end face and square end faces is 54.55 °~54.85 °；The circular end face of three steering heads is in same plane；The side edge of the square end faces of adjacent two steering head, and the square end faces of three steering heads form the containing body of a bottom lock.The three-dimensional Hopkinson bar steering head device can realize that stress wave turns to, so as to solve the incidence wave synchronization sex chromosome mosaicism of three-dimensional Hopkinson pressure bar.
Description
Technical field
Stress wave transfer in being tested the present invention relates to a kind of Impulsive load, it is particularly a kind of to be used for three-dimensional Hopkinson
The steering head device that incidence wave turns in compression bar experiment, belongs to shock dynamics experimental rig field.
Background technology
The strength of materials is to ensure a most important primary condition of various engineering structure safe handlings.General people are to material
The understanding for expecting intensity is intensity of the material in simple tension or Uniaxial Compression.Such as the intensity of metal group material is generally referred to as
Their intensity in simple tension.The intensity of concrete and rock is generally referred to as their intensity in Uniaxial Compression, this
A little is all the one-dimensional intensity of material, can be immediately arrived in normal experiment.But most of material in engineering structure is
(be referred to as complex stress) under the action of two dimension or triaxiality, the strength of materials at this moment determine be exactly one it is sufficiently complex and
The problem of difficult, it is necessary to develop the loading equipemtn of two and three dimensions, could be unfolded to study to the problem.
Mechanical property of the material under dynamic load is different from its mechanical property under static load.The dynamic of material under High speed load
There are basic difference between deformation and static (quasi-static) deformation, the dynamic behavior that specific manifestation goes out mainly has change at a high speed
Shape, the increase of intensity, dynamic failure and other physics, Chemical response etc..As it was previously stated, material is in two more in engineering structure
Dimension or three-dimensional stress constraint；Under complex stress condition, the strain rate effect of material then shows as the complexity of height.Such as material
Strain rate effect for material shear strength and unobvious, it is and then fairly obvious for tensile strength or tensile strength.It is this
Difference causes the failure mechanics of material related with strain rate, but at present for, the understanding of our strain rate effects to material
Only from one-dimensional experiment as a result, being badly in need of developing High speed load equipment under two dimension or three-dimensional situation, and then to multidimensional
The resistance to vibration of material is studied under Impact Load.
The late nineteenth and early twentieth centuries, people have been developed that confined pressure three-axis tester, or add three-axis tester, come
Study the intensity under material complex stress condition under static or quasi-static load.This testing machine is only capable of producing on some direction
Continuous stress, be only capable of providing fixed confined pressure on two other direction（Confined pressure size is adjustable before the test）.And to 20
The sixties in century, countries in the world expand the research of the true triaxial test machine of static or quasi-static load in succession, at present, it is static or
The true triaxial test machine technology of quasi-static load comparative maturity, has more complete commercial product to come out.It is fresh with this formation
Bright contrast, although early in 1897, First high-strain rate testing machine has just produced, 1914, and B.Hopkinson is just
Hopkinson compression bars are devised, are improved by Kolsky, Hopkinson pressure bar is become the one of research material dynamic mechanical
Kind important means.However, by the end of current, High speed load experimental rig both domestic and external is mostly one-dimensional.And for concrete, rock
Deng fragile material, false three axis dynamic load equipment, i.e. confined pressure SHPB systems, but do not obtain big development have developed.So far,
A true triaxial dynamic load equipment is at home and abroad there is no, for resistance to vibration of the research material under complex stress condition.
In conclusion people also test the understanding of the strain rate effect of material only from one-dimensional Hopkinson bar,
There is many unknown, the High speed load device of material experiment under urgent need development three-dimensional situation in the space of multidimensional.It is three-dimensional
The difficult point of Hopkinson bar is how to ensure the synchronism of incidence wave in three incident bars.
The content of the invention
Present invention aims at, there is provided a kind of three-dimensional Hopkinson bar steering head device, the three-dimensional Hopkinson bar turn to
Head device can realize that stress wave turns to, so as to solve the incidence wave synchronization sex chromosome mosaicism of three-dimensional Hopkinson pressure bar.
The present invention is achieved through the following technical solutions the purpose：
A kind of three-dimensional Hopkinson bar steering head device, includes the identical steering head of three sizes of annular array；It is described
One end that steering head is contacted with incident bar is circular end face, and one end that steering head is contacted with test specimen is square end faces；Round nose
The diameter in face and the side ratio of square end faces are 50：48, the angles of circular end face and square end faces is 54.55 °~
54.85°；The circular end face of three steering heads is in same plane；The side edge of the square end faces of adjacent two steering head, and
And the square end faces of three steering heads form the containing body of a bottom lock.
Preferably, the circular end face of the steering head and the angle of square end faces are 54.7 °.
Three-dimensional Hopkinson bar steering head device of the invention can realize that stress wave turns to, and the square end faces of steering head
Waveforms amplitude at each position is equal, and the time of arrival is identical, ensure that the uniformity of waveform, can solve three-dimensional Hopkinson
The incidence wave synchronization sex chromosome mosaicism of compression bar.
Brief description of the drawings
Fig. 1 is the top view of the one of embodiment of the present invention.
Fig. 2 is the front view of steering head in Fig. 1.
Fig. 3 is the A-A sectional views of steering head in Fig. 2.
Fig. 4 is the structure for including the three-dimensional Hopkinson bar single unit system of three-dimensional Hopkinson bar steering head device in Fig. 1
Schematic diagram.
Fig. 5 is the incidence wave waveform for being loaded into three incident bars.
Fig. 6 to Fig. 8 is incidence wave and reflection wave in three incident bars.
Fig. 9 to Figure 15 is the stress wave waveform of seven positions at steering head square end faces.
Description of reference numerals：1- steering head devices, 2- steering heads, 3- circular end faces, 4- square end faces, 5- load bars,
6- incident bars, 7- transmission bars.
Embodiment
In order to facilitate the understanding of those skilled in the art, the present invention is carried out below in conjunction with attached drawing and embodiment further
Description.
Fig. 1 show the one of embodiment of three-dimensional Hopkinson bar steering head device of the invention.
Referring to Fig. 1, the identical steering of three size of the three-dimensional Hopkinson bar steering head device including annular array
Head.Referring to Fig. 2, Fig. 3, described steering head one end is circular end face, and the other end is square end faces.In the present embodiment, round nose
A diameter of 50mm in face, the length of sides of square end faces are 48mm, and the angle α of circular end face and square end faces is 54.7 °.
Referring to Fig. 1, the circular end face of three steering heads is in same plane；The side of the square end faces of adjacent two steering head
Edge connects, and the square end faces of three steering heads form the containing body of a bottom lock.When carrying out shock dynamics experiment,
Incident bar is contacted with circular end face；Test specimen is positioned in containing body, and test specimen is contacted with square end faces.
It should be understood that the angle α of the circular end face and square end faces can also be other in 54.55 °~54.85 °
Angle.
Three-dimensional Hopkinson bar steering head device of the invention tests wave action
Fig. 4 is the three-dimensional Hopkinson bar single unit system for including above-mentioned three-dimensional Hopkinson bar steering head device, it includes
Load bar, incident bar, steering head device, test specimen, transmission bar.Wherein, a diameter of 110.0mm of load bar, the diameter of incident bar
50.0mm.The compressional wave of incidence wave as shown in Figure 5 is loaded into three incident bars, and the pressure magnitude of incidence wave is 100MPa, arteries and veins
Wide about 160.0 μ s.Incidence wave and reflection wave in three incident bars is as shown in Fig. 6, Fig. 7, Fig. 8, in three incident bars
Waveform is consistent, and incidence wave waveforms amplitude is 100.0MPa, and the waveforms amplitude of back wave is about 60.0MPa or so.It can be obtained from waveform,
It can be good at changing the direction of incidence wave by steering head.
In the square end faces of steering head, 7 position detection stress wave situations are selected.Experimental data such as Fig. 9 to Figure 15
Shown, from the point of view of the stress wave at 7 positions, waveform coincide very good, illustrates that stress wave can be very after passing through steering head
Good steering, and the waveforms amplitude at each position of steering head square end faces is equal, and the time of arrival is identical, ensure that ripple
The uniformity of shape.
The identical incident bar in three stress wave propagation directions can be seen that by analysis, pass through the steering that the present invention designs
Head device, can be good at realizing the turning function of stress wave, and the stress wave after turning to reach end face time it is identical,
Waveform can also keep good uniformity.
Embodiment described above only expresses one embodiment of the present invention, its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (2)
- A kind of 1. three-dimensional Hopkinson bar steering head device, it is characterised in that：Three sizes including annular display are identical to be turned To head；One end that the steering head is contacted with incident bar is circular end face, and one end that steering head is contacted with test specimen is square end Face；The diameter of circular end face and the side ratio of square end faces are 50：48, the angle of circular end face and square end faces is 54.55 °~54.85 °；The circular end face of three steering heads is in same plane；The side of the square end faces of adjacent two steering head Edge connects, and the square end faces of three steering heads form a containing body.
- 2. three-dimensional Hopkinson bar steering head device according to claim 1, it is characterised in that：The circle of the steering head The angle of end face and square end faces is 54.7 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013027.4A CN103776687B (en) | 2014-01-10 | 2014-01-10 | Three-dimensional Hopkinson pressure bar steering head device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013027.4A CN103776687B (en) | 2014-01-10 | 2014-01-10 | Three-dimensional Hopkinson pressure bar steering head device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103776687A CN103776687A (en) | 2014-05-07 |
| CN103776687B true CN103776687B (en) | 2018-05-15 |
Family
ID=50569193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410013027.4A Expired - Fee Related CN103776687B (en) | 2014-01-10 | 2014-01-10 | Three-dimensional Hopkinson pressure bar steering head device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103776687B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105300790B (en) * | 2015-11-23 | 2018-04-10 | 福建江夏学院 | A kind of guiding regulating device and its application method of three-dimensional Hopkinson transmission depression bar |
| CN106813980A (en) * | 2017-02-09 | 2017-06-09 | 赵江霞 | True triaxial dynamic tensile experimental rig |
| CN108287104B (en) * | 2017-12-06 | 2020-07-10 | 广州大学 | True two-dimensional separation type Hopkinson pressure bar experimental device based on wave decomposition |
| CN108398340B (en) * | 2017-12-06 | 2020-04-14 | 广州大学 | True biaxial dynamic stretching experimental device |
| CN114966114B (en) * | 2022-04-19 | 2023-05-05 | 北京理工大学 | Multi-component impact calibration device and continuous multi-loading synchronous calibration method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1065492A2 (en) * | 1999-07-02 | 2001-01-03 | Sumitomo Rubber Industries Ltd. | Split Hopkinson bar testing apparatus and method |
| CN102169069A (en) * | 2011-05-30 | 2011-08-31 | 浣石 | Three-dimensional impact loading experiment device |
| CN102331366A (en) * | 2011-07-18 | 2012-01-25 | 河海大学 | Hopkinson bar active pressure confining device for stabilizing pressure |
| CN102778552A (en) * | 2012-08-01 | 2012-11-14 | 中国石油天然气股份有限公司 | Experimental method for steering law of directional perforation and fracturing fracture |
| CN103207122A (en) * | 2013-04-15 | 2013-07-17 | 北京理工大学 | Minitype dynamic pulling-pressing experiment system with preload |
-
2014
- 2014-01-10 CN CN201410013027.4A patent/CN103776687B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1065492A2 (en) * | 1999-07-02 | 2001-01-03 | Sumitomo Rubber Industries Ltd. | Split Hopkinson bar testing apparatus and method |
| CN102169069A (en) * | 2011-05-30 | 2011-08-31 | 浣石 | Three-dimensional impact loading experiment device |
| CN102331366A (en) * | 2011-07-18 | 2012-01-25 | 河海大学 | Hopkinson bar active pressure confining device for stabilizing pressure |
| CN102778552A (en) * | 2012-08-01 | 2012-11-14 | 中国石油天然气股份有限公司 | Experimental method for steering law of directional perforation and fracturing fracture |
| CN103207122A (en) * | 2013-04-15 | 2013-07-17 | 北京理工大学 | Minitype dynamic pulling-pressing experiment system with preload |
Non-Patent Citations (2)
| Title |
|---|
| 三维动静组合加载下岩石力学特性试验初探;宫凤强 等;《岩石力学与工程学报》;20110630;第30卷(第6期);1179-1190 * |
| 三轴SHPB岩石材料动力学特性试验研究的现状和发展趋势;宫凤强 等;《科技导报》;20091231;第27卷(第18期);106-111 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103776687A (en) | 2014-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103776687B (en) | Three-dimensional Hopkinson pressure bar steering head device | |
| CN105865907B (en) | A kind of true triaxial test fixture for energetic disturbance type rock burst simulation | |
| Cochran et al. | Anisotropy in the shallow crust observed around the San Andreas fault before and after the 2004 M 6.0 Parkfield earthquake | |
| Wang et al. | Numerical study on static and dynamic fracture evolution around rock cavities | |
| Nishii et al. | Subduction related antigorite CPO patterns from forearc mantle in the Sanbagawa belt, southwest Japan | |
| Wang et al. | Effect of oblique incident wave perturbation on rock spalling: An insight from DEM modelling | |
| Chai | Research on multijoint rock failure mechanism based on moment tensor theory | |
| CN108287104B (en) | True two-dimensional separation type Hopkinson pressure bar experimental device based on wave decomposition | |
| Ji et al. | Discrete element modeling of acoustic emission in rock fracture | |
| Cadoni | Mechanical characterization of rock materials at high strain-rate | |
| Bo et al. | Seismic stress path induced by obliquely incident waves and its simulation | |
| Labuz et al. | Failure criterion with intermediate stress and two friction angles | |
| Miao et al. | Study on damage identification for reinforced concrete structures based on wavelet transform | |
| Li et al. | Analysis of cracking processes of sandstone in rockburst test | |
| Jian-wen et al. | Dynamic response of 3D spherical cavity in elastic half-space under plane SV waves | |
| CN203745172U (en) | Three-direction pseudo static test actuator connection device | |
| Scarpa et al. | Slow earthquakes and low frequency tremor along the Apennines, Italy | |
| Wu et al. | Study about mechanic parameter of slope rock mass' structure plane | |
| Huang et al. | Energy absorbing of porous rock investigated under impact loading | |
| Sarout et al. | Laboratory scale micro-seismic monitoring of rock faulting and injection-induced fault reactivation | |
| Baolei et al. | FPSO Working Chamber Underwater Detection Device Coupled Motion Response# br | |
| Fernandes | Scientific and operational consequences of non-conventional model testing in deepwater ocean basins | |
| Xue et al. | Spherical shock-wave propagation in three-dimensional granular packings | |
| Omar et al. | Validation of a 3D discrete element model in investigating dynamic tensile behavior of concrete at high strain rates | |
| Gao et al. | Spatial Distribution of Seismic Anisotropy in the Crust in the Northeast Front Zone of Tibetan Plateau |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180515 Termination date: 20190110 |