CN208505806U - A kind of explosively loading device based on uniaxial train condition - Google Patents
A kind of explosively loading device based on uniaxial train condition Download PDFInfo
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- CN208505806U CN208505806U CN201821117065.4U CN201821117065U CN208505806U CN 208505806 U CN208505806 U CN 208505806U CN 201821117065 U CN201821117065 U CN 201821117065U CN 208505806 U CN208505806 U CN 208505806U
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Abstract
The utility model discloses a kind of explosively loading device based on uniaxial train condition, described device includes the loading module for blast impulse, the constraints module for realizing uniaxial train and the measurement module for experimental data acquisition；Wherein, the loading module includes initiator, explosive, container and the medium for being evenly transferred to blast load on test specimen；The constraints module includes the steel pipe for being provided with observation window, upper metal plate, lower metal plate；The measurement module includes support construction, the laser interference rate meter for measuring backboard movement velocity, the sensor for measuring actuating pressure, the sensor for measuring air superpressure, the high-speed camera for observing material compression process, the foil gauge for measuring pipe deformation and the oscillograph for acquiring data.The utility model, which can be realized, carries out small specimen uniaxial train loading experiment to brittleness porous material, to avoid meeting uniaxial train loading environment using confined explosion's loading experiment of big test specimen, and it can increase measurement to experiment parameter during explosively loading, while it is observed that test specimen compression process.
Description
Technical field
The utility model relates to surge guard engineering fields, and in particular to a kind of explosively loading based on uniaxial train condition
Device.
Background technique
Porous material with impact properties such as lighting, slicing and constant feedback load due to being widely used in protecting
Design.Under normal conditions, the mechanical property of elastoplasticity porous material dependence test is mostly consistent with true stress condition, cell space quilt
It squeezes after collapsing, internal space is completely released, and can't bring the significant change of lateral dimension.Therefore, elastoplasticity is more
Porous materials are consistent with the stress-strain diagram under uniaxial train load in one-dimensional stress load, and stress plateau can all occur,
Wherein, stress plateau is to evaluate its important parameter for absorbing impact energy.However, for brittleness porous material, it is such as porous
Concrete, foamed ceramics etc., situation is then different.Brittleness porous material is in the case where no sidewise restraint is compressed
(i.e. one-dimensional stress load), deformation are not axially, but to generate apparent transverse shifting along shear slip plane,
The internal poles of brittleness porous material are also easy to produce stress concentration simultaneously, to cause bursting apart and falling off for material.Therefore, brittleness is porous
Mechanical property of the material under one-dimensional stress load is not inconsistent with true stress condition, and the local loading for needing to carry out big test specimen is real
It tests, that is, needs to meet uniaxial train loading environment.In addition, brittleness porous material is under one-dimensional stress load, there is no significantly answer
Power platform section can not judge its ability for absorbing impact energy.Currently, there is researcher laterally to become using steel bushing constraint test specimen
The method of shape, realizes the uniaxial train quasistatic compression experiment of brittleness porous material, but is not directed under Blast Shock
Uniaxial train loading method.In addition, the mechanical characteristic under brittleness porous material uniaxial train semi-static load cannot reflect completely
Its mechanical response under Blast Shock out.
Summary of the invention
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of explosion based on uniaxial train condition
Loading device, which avoids meeting uniaxial train loading environment using confined explosion's loading experiment of big test specimen, and can increase
Add the measurement to experiment parameter during explosively loading, while it is observed that test specimen compression process.
The technical solution that the utility model solves above-mentioned technical problem is:
A kind of explosively loading device based on uniaxial train condition, which is characterized in that including the load for blast impulse
Module, the constraints module for realizing uniaxial train and the measurement module for experimental data acquisition.The loading module packet
Include initiator, explosive, container and medium, wherein the container is equipped with for blast load to be evenly transferred on test specimen
Medium, and the explosive is placed in the medium, the initiator is used for ignition charge.The constraints module includes being provided with observation window
Steel pipe, upper metal plate, lower metal plate, the observation window axially opens up along steel pipe, and internal width is greater than outside.On described
The diameter of metal plate is slightly less than diameter of steel tube, is located at test specimen upper surface, for transmitting load.The lower metal plate is fixed on branch
On support structure, and it is located at test specimen lower surface.The measurement module includes support construction, the laser for measuring backboard movement velocity
Interference rate meter, the sensor for measuring actuating pressure, the sensor for measuring air superpressure, for observe material compression
The high-speed camera of process, the foil gauge for measuring pipe deformation and the oscillograph for acquiring data.The measurement is made
It is located at test specimen upper and lower surface with the sensor of pressure, under the laser interference rate meter and the sensor for measuring air superpressure are located at
Metal back simultaneously keeps appropriate distance.
One preferred embodiment of the utility model, the container be it is cylindric, be placed on metal plate, bottom use
Flexible plastic film sealing, is conducive to uniformly transfer blast load to upper metal plate；The diameter of container is slightly less than the steel pipe,
Its height is adjusted according to explosive position.
One preferred embodiment of the utility model, the type of the explosive, dose and at a distance from the upper metal plate
It needs to be adjusted according to experiment magnitude of load.
One preferred embodiment of the utility model, the height of the observation window as height of specimen, answer by external width
Greater than the three times aperture of material, the observation window is provided with high-intensitive transparent material, for meeting uniaxial train loading environment.
One preferred embodiment of the utility model, the steel pipe are connected by screw bolts with support construction and lower metal plate,
And lower metal plate is located at centre.
The sensor of one preferred embodiment of the utility model, the measurement actuating pressure is flake, to greatest extent
Reduce the interference to test specimen.
One preferred embodiment of the utility model, the laser interference rate meter are consolidated with the sensor of measurement air superpressure
Fixed pole can stretch.
A kind of application method of the explosively loading device based on uniaxial train condition, comprising the following steps:
(1) position that is fixed and adjusting laser interference rate meter and pressure sensor；
(2) sensor for measuring actuating pressure is attached to lower metal plate upper surface；
(3) steel pipe and support construction and lower metal plate are connected by screw bolts；
(4) foil gauge is circumferentially sticked in steel pipe；
(5) test specimen is put into steel pipe；
(6) upper metal plate is placed on test specimen；
(7) sensor for measuring actuating pressure is attached to upper metal plate upper surface；
(8) container (pvc pipe of lower end plastic film sealing) is placed on upper metal plate；
(9) explosive is fixed in a reservoir；
(10) suitable medium is injected into container；
(11) route of connection data acquisition；
(11) high-speed camera is adjusted, it is made to be directed at observation window；
(12) ready rear detonating charge.
The working principle of the explosively loading device based on uniaxial train condition of the utility model is:
Blast load is passed to upper metal plate using medium by the explosively loading device of the utility model, and upper metal plate passes through
Compression specimens are moved downward, while realizing the uniaxial train explosively loading of test specimen by steel pipe axial constraint, then pass through high speed
Photography observation test specimen compression process, and pass through the pressure curve of sensor measurement different location.
The utility model have compared with prior art it is below the utility model has the advantages that
1, explosively loading device provided by the utility model avoids meeting using confined explosion's loading experiment of big test specimen
Uniaxial train loading environment greatly reduces experimental work amount；
2, explosively loading device provided by the utility model can increase the measurement to experiment parameter during explosively loading, together
When it is observed that test specimen compression process；
3, the blast load that explosively loading device provided by the utility model provides is stablized, and can carry out according to actual needs
It adjusts.
Detailed description of the invention
Fig. 1 is the knot of a specific embodiment of the explosively loading device based on uniaxial train condition of the utility model
Structure schematic diagram.
Specific embodiment
The present invention will be further described in detail with reference to the embodiments and the accompanying drawings, but the implementation of the utility model
Mode is without being limited thereto.
Referring to Fig. 1, the explosively loading device based on uniaxial train condition of the utility model, which is characterized in that including fried
Medicine 1, container 2, medium 3, upper metal plate 4, the sensor 5 for measuring actuating pressure, foil gauge 6, test specimen 7, steel pipe 8, lower gold
Belong to plate 9, supporting mechanism 10, laser interference rate meter 11, the sensor 12 for measuring air superpressure, initiator 13, observation window
14, oscillograph 15 and high-speed camera 16.
Referring to Fig. 1, the container 2 is equipped with medium 3 for being evenly transferred to blast load on test specimen, and the explosive
1 is placed in medium 3, and the initiator 13 is used for ignition charge 1.
Fig. 1 is participated in, the observation window 14 is opened up along the axial direction of steel pipe 8, and internal width is greater than outside.
Referring to Fig. 1, the diameter of the upper metal plate 4 is slightly less than 8 diameter of steel pipe, is located at 7 upper surface of test specimen, for transmitting
Blast load.
Referring to Fig. 1, the lower metal plate 9 is fixed in support construction 10, and is located at 7 lower surface of test specimen.
Referring to Fig. 1, the sensor 5 of the measurement actuating pressure is located at 7 upper and lower surface of test specimen, the laser interference rate meter
11 are located at lower 9 back side of metal plate and keep appropriate distance with the sensor 12 for measuring air superpressure.
Referring to Fig. 1, the foil gauge 6 is pasted on the axial direction of 8 outer surface of steel pipe.
Referring to Fig. 1, the container 2 be it is cylindric, be placed on metal plate 4, bottom using flexible plastic film sealing,
Be conducive to uniformly transfer blast load to upper metal plate 4；The diameter of container 2 is slightly less than the steel pipe 8, and height is according to fried
1 position of medicine is adjusted.
Referring to Fig. 1, the type of the explosive 1, dose and needed with a distance from the upper metal plate 4 according to experiment load
Size is adjusted.
Referring to Fig. 1, for the height of the observation window 14 as 7 height of test specimen, external width should be greater than three times of material
Aperture, the observation window 14 is provided with high-intensitive transparent material, for meeting uniaxial train loading environment.
Referring to Fig. 1, the steel pipe 8 is connected by screw bolts with support construction 10 and lower metal plate 9, and lower metal plate 9
In centre.
Referring to Fig. 1, the sensor 5 of the measurement actuating pressure is flake, reduces the interference to test specimen to greatest extent.
Referring to Fig. 1, the fixed link of the laser interference rate meter 11 and the sensor 12 of measurement air superpressure can stretch.
Referring to Fig. 1, the application method of the explosively loading device based on uniaxial train condition of the present embodiment includes following step
It is rapid:
(1) position that is fixed and adjusting laser interference rate meter 11 Yu pressure sensor 12；
(2) sensor 5 for measuring actuating pressure is attached to lower metal plate upper surface；
(3) steel pipe 8 and support construction 10 and lower metal plate 9 are connected by screw bolts；
(4) foil gauge 6 is circumferentially sticked in steel pipe 8；
(5) test specimen 7 is put into steel pipe 8；
(6) upper metal plate 4 is placed on test specimen 7；
(7) sensor 5 for measuring actuating pressure is attached to upper 4 upper surface of metal plate；
(8) by the pvc pipe of the lower end container 2(plastic film sealing) it is placed on upper metal plate 4；
(9) explosive 1 is fixed in container 2；
(10) suitable medium 3 is injected into container 2；
(11) by the connection of data acquisition to oscillograph 15；
(11) high-speed camera 16 is adjusted, it is made to be directed at observation window 14；
(12) ready rear 13 detonating charge 1 of initiator.
Referring to Fig. 1, with reference to the accompanying drawing to the work of the explosively loading device based on uniaxial train condition of the utility model
It is further described as principle:
Blast load is passed to upper metal plate 4, upper metal plate 4 using medium 3 by the explosively loading device of the utility model
By moving downward compression specimens 7, while by the uniaxial train explosively loading of 8 axial constraint of steel pipe realization test specimen, then lead to
It crosses high-speed camera 16 and observes test specimen compression process, and measure the experiment number of different location by different sensors 5,6,11,12
According to.
Above-mentioned is the preferable embodiment of the utility model, but the embodiments of the present invention is not by above content
It limits, it is made under other any spiritual essence and principles without departing from the utility model to change, modification, substitution, combine, letter
Change, should be equivalent substitute mode, be included within the protection scope of the utility model.
Claims (7)
1. a kind of explosively loading device based on uniaxial train condition, which is characterized in that including the load mould for blast impulse
Block, the constraints module for realizing uniaxial train and the measurement module for experimental data acquisition；
The loading module includes initiator, explosive, container and medium, wherein the container is equipped with for by blast load
The medium being evenly transferred on test specimen, and the explosive is placed in the medium, the initiator is used for ignition charge；
The constraints module includes the steel pipe for being provided with observation window, upper metal plate, lower metal plate, and the observation window is axially opened along steel pipe
If internal width is greater than outside；The diameter of the upper metal plate is slightly less than diameter of steel tube, is located at test specimen upper surface, uses
In transmitting load；The lower metal plate is fixed on the support structure, and is located at test specimen lower surface；
The measurement module includes support construction, the laser interference rate meter for measuring backboard movement velocity, for measuring work
With the sensor of pressure, the sensor for measuring air superpressure, the high-speed camera for observing material compression process, it is used for
Measure the foil gauge of pipe deformation and the oscillograph for acquiring data；The sensor of the measurement actuating pressure is located at test specimen
Upper and lower surface；The laser interference rate meter and measurement air superpressure sensor be located at lower metal back and holding rationally away from
From.
2. a kind of explosively loading device based on uniaxial train condition according to claim 1, which is characterized in that the appearance
Device be it is cylindric, be placed on metal plate, bottom using flexible plastic film sealing, be conducive to uniformly transfer blast load
To upper metal plate；The diameter of container is slightly less than the steel pipe, and height is adjusted according to explosive position.
3. a kind of explosively loading device based on uniaxial train condition according to claim 1, which is characterized in that described fried
It the type of medicine, dose and needs to be adjusted according to experiment magnitude of load at a distance from the upper metal plate.
4. a kind of explosively loading device based on uniaxial train condition according to claim 1, which is characterized in that the sight
The height of window is examined as height of specimen, external width should be greater than the three times aperture of material, and the observation window is provided with high-strength
The transparent material of degree, for meeting uniaxial train loading environment.
5. a kind of explosively loading device based on uniaxial train condition according to claim 1, which is characterized in that the steel
Pipe is connected by screw bolts with support construction and lower metal plate, and lower metal plate is located at centre.
6. a kind of explosively loading device based on uniaxial train condition according to claim 1, which is characterized in that the survey
The sensor for measuring actuating pressure is flake, reduces the interference to test specimen to greatest extent.
7. a kind of explosively loading device based on uniaxial train condition according to claim 1, which is characterized in that described to swash
Interference of light tachymeter and the fixed link of the sensor of measurement air superpressure can stretch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821117065.4U CN208505806U (en) | 2018-07-16 | 2018-07-16 | A kind of explosively loading device based on uniaxial train condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821117065.4U CN208505806U (en) | 2018-07-16 | 2018-07-16 | A kind of explosively loading device based on uniaxial train condition |
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| Publication Number | Publication Date |
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| CN208505806U true CN208505806U (en) | 2019-02-15 |
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| CN201821117065.4U Expired - Fee Related CN208505806U (en) | 2018-07-16 | 2018-07-16 | A kind of explosively loading device based on uniaxial train condition |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542530A (en) * | 2019-09-20 | 2019-12-06 | 中国工程物理研究院化工材料研究所 | Anti-knock testing device and experimental method thereof |
| DE202022104904U1 (en) | 2022-05-23 | 2023-08-25 | Wpx Faserkeramik Gmbh | Test device for determining the burn-out resistance over time of a test specimen |
-
2018
- 2018-07-16 CN CN201821117065.4U patent/CN208505806U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542530A (en) * | 2019-09-20 | 2019-12-06 | 中国工程物理研究院化工材料研究所 | Anti-knock testing device and experimental method thereof |
| DE202022104904U1 (en) | 2022-05-23 | 2023-08-25 | Wpx Faserkeramik Gmbh | Test device for determining the burn-out resistance over time of a test specimen |
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| 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: 20190215 Termination date: 20200716 |