CN204154570U - A kind of low temperature loading experimental apparatus used on Hopkinson bar - Google Patents
A kind of low temperature loading experimental apparatus used on Hopkinson bar Download PDFInfo
- Publication number
- CN204154570U CN204154570U CN201420605413.8U CN201420605413U CN204154570U CN 204154570 U CN204154570 U CN 204154570U CN 201420605413 U CN201420605413 U CN 201420605413U CN 204154570 U CN204154570 U CN 204154570U
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- CN
- China
- Prior art keywords
- temperature
- experimental apparatus
- low temperature
- loading experimental
- hopkinson bar
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- 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
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- 238000012360 testing method Methods 0.000 claims abstract description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 11
- 238000002474 experimental method Methods 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims 1
- 239000006261 foam material Substances 0.000 claims 1
- 230000008676 import Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- -1 polyethylene Polymers 0.000 claims 1
- 229920000573 polyethylene Polymers 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a kind of low temperature loading experimental apparatus used on Hopkinson bar, for realizing Hopkinson bar experimental ability at low ambient temperatures and designing.The present utility model comprises heat sink and bracing or strutting arrangement, and heat sink includes coiled pipe, heat-insulation layer, fan, temperature sensor, support etc., and coupled has liquid nitrogen container, temperature sensor.Bracing or strutting arrangement comprises sliding system, leveling system and collecting board etc.The utility model is applicable to all kinds of low-temperature tests needing to use Hopkinson bar to carry out.
Description
Technical field
the utility model relates to Experimental Mechanics field, and the impact experiment under particularly using Hopkinson bar to carry out low temperature environment, is specially a kind of low temperature loading experimental apparatus used on Hopkinson bar.
Background technology
When using Hopkinson bar to carry out the impact experiment of material, many times need the dynamic mechanical of the actual test material under different temperature environments of simulated field.Under current experiment condition, lack and effectively make experiment material remain on experimental provision in low temperature environment, lack the cryogenic thermostat chamber for Hopkinson bar, cause testing the experimental data that cannot carry out or obtain not ideal enough.
Summary of the invention
For above-mentioned situation, the utility model devises a kind of low temperature loading experimental apparatus that can use on Hopkinson bar, can realize the cooling of material and keep under constant temperature experimental situation, improving the experimental ability of Hopkinson bar and the confidence level of data.
The utility model devises and uses on Hopkinson bar, can be used for rapid-assembling experiment, cryogenic thermostat loading experimental apparatus.On the one hand by liquid nitrogen stream gauge control flow check amount, to copper tube serpentine cooling, reach the at the uniform velocity cooling to whole experimental provision environment; On the other hand by slip and the levelling device of test specimen platform, realize the examination assembling of whole experimental provision before cooling and the rapid-assembling after having lowered the temperature.Secondly, the utility model comprises little electric fan, for realizing the homogeneous temperature to whole environment in temperature-fall period; And the fender of test specimen platform both sides is for collecting crushing experiment material and protective device inwall.
Described whole device profile is cylindrical shape.Adopt PVC material as device outer wall, with alleviator weight; The certain thickness polyurethane foam material of inner filling, uses sheet iron to make it to isolate with copper tube serpentine and environment.Whole device retort stand is fixed on Hopkinson rod bearing, and test specimen platform can slide along track on Hopkinson rod bearing.
Accompanying drawing explanation
Fig. 1 is the side view of the utility model when using on Hopkinson bar.
Fig. 2 is the front elevation that the utility model and Hopkinson bar have been assembled.
Fig. 3 is that the utility model shows that the sectional view of copper tube serpentine layout is (in Fig. 1
1cross section).
In figure, 1-temperature sensor; 2-fan; 3-polyurethane foam material; 4-copper tube serpentine; 41-sheet iron; 5-fender; 6-test specimen platform; 7-leveling bolt; 8-support; 9-roller and slideway.
Embodiment
The utility model adopts individual pen copper tube serpentine 4, and by controlling liquid nitrogen flow refrigeration, copper pipe inlet is connected with liquid nitrogen stream gauge, liquid nitrogen container.Liquid outlet is communicated to outside device.In refrigeration and experimentation, temperature sensor 1 is communicated to external temperature sensor displays temperature, and fan 2 makes device inner air circulate, and reaches the effect of uniform decrease in temperature.
As shown in Figure 1, whole device is fixed on Hopkinson experiment table bearing by support 8.Test specimen platform 6 moves by roller and slideway 9, before lowering the temperature to test specimen, is regulated the relative position of test specimen platform 6 and Hopkinson bar by levelling device 7.In temperature-fall period, it is outside that incident bar and reflection bar are all positioned at the utility model device, and device two ends temporary closure is to meet cooling-down effect.
By the measurement to temperature, after reaching experiment condition, carry out rapid-assembling to experimental provision, fender 5 is collected test specimen fragment in experimentation, and other positions of protective device are not damaged.After once having tested, test specimen changed by slip test specimen platform, and other positions of device keep motionless, can test next time.
Claims (1)
1. the low temperature loading experimental apparatus used on Hopkinson bar, is characterized in that, the built-in annular copper pipe of this device, single import and export, and flow is controlled by liquid nitrogen stream gauge; Temperature-fall period is closed, and can realize the rapid-assembling of Hopkinson bar after reaching design temperature.
2. low temperature loading experimental apparatus according to claim 1, is characterized in that, described device is drum, outer wall PVC material, and both sides punch to meet test club and install, and close in temperature-fall period.
3. low temperature loading experimental apparatus according to claim 1, is characterized in that, described annular copper pipe is soldered in device, and copper pipe both sides have sheet iron to protect; Uniflux, outlet is placed in outside device.
4. low temperature loading experimental apparatus according to claim 1, it is characterized in that, temperature sensor is adopted to be connected to temperature sensor temperature control, flowmeter and flow regulator is provided with between copper tube serpentine and liquid nitrogen container, according to the temperature of described temperature sensor feedback, adopt constant liquid nitrogen flow to lower the temperature, then lower the temperature, until experimental temperature with uniform rate in device.
5. low temperature loading experimental apparatus according to claim 1, is characterized in that, test specimen platform lower is horizontal slide and roller; Described test specimen platform can on pretreatment after, skid off along definitive orbit, to realize the operations such as test specimen installation, leveling, examination assembling.
6. low temperature loading experimental apparatus according to claim 5, it is characterized in that, leveling system divided into by platform, and the examination carrying out test specimen and Hopkinson bar before cooling is assembled, by regulating the series of height of described leveling system, realize the rapid-assembling experiment after cooling.
7. low temperature loading experimental apparatus according to claim 5, is characterized in that, fender is installed in platform both sides, and after once experiment terminates, described fender plays collects crushing experiment material and the effect of protective device inwall.
8. low temperature loading experimental apparatus according to claim 1, is characterized in that, what wrap up outside the sheet iron of welding copper pipe is overall polyethylene foam-material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420605413.8U CN204154570U (en) | 2014-12-04 | 2014-12-04 | A kind of low temperature loading experimental apparatus used on Hopkinson bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420605413.8U CN204154570U (en) | 2014-12-04 | 2014-12-04 | A kind of low temperature loading experimental apparatus used on Hopkinson bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204154570U true CN204154570U (en) | 2015-02-11 |
Family
ID=52512674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420605413.8U Expired - Fee Related CN204154570U (en) | 2014-12-04 | 2014-12-04 | A kind of low temperature loading experimental apparatus used on Hopkinson bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204154570U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655502A (en) * | 2015-03-09 | 2015-05-27 | 中国矿业大学(北京) | Low-temperature experimental device for Hopkinson bar |
| CN104964871A (en) * | 2015-07-15 | 2015-10-07 | 福建江夏学院 | Adjustable vertical Hopkinson incident pressure bar bundle guide device and use method thereof |
| CN105445093A (en) * | 2015-12-17 | 2016-03-30 | 安徽理工大学 | Gradienter for split-Hopkinson-pressure-bar splitting test piece |
| CN107121330A (en) * | 2017-06-09 | 2017-09-01 | 北京工业大学 | The high temperature test specimen tested for Hopkinson bar cools rapidly rod-pulling type device |
| CN107687981A (en) * | 2017-09-21 | 2018-02-13 | 南京理工大学 | A kind of liquid nitrogen cooling device suitable for low-temperature dynamic Experiments of Machanics |
| CN108613863A (en) * | 2018-05-25 | 2018-10-02 | 哈尔滨工程大学 | A kind of quick cooling device for low temperature SHPB impact experiments |
-
2014
- 2014-12-04 CN CN201420605413.8U patent/CN204154570U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655502A (en) * | 2015-03-09 | 2015-05-27 | 中国矿业大学(北京) | Low-temperature experimental device for Hopkinson bar |
| CN104655502B (en) * | 2015-03-09 | 2018-02-09 | 中国矿业大学(北京) | A kind of low temperature test device for Hopkinson bar |
| CN104964871A (en) * | 2015-07-15 | 2015-10-07 | 福建江夏学院 | Adjustable vertical Hopkinson incident pressure bar bundle guide device and use method thereof |
| CN105445093A (en) * | 2015-12-17 | 2016-03-30 | 安徽理工大学 | Gradienter for split-Hopkinson-pressure-bar splitting test piece |
| CN105445093B (en) * | 2015-12-17 | 2017-11-07 | 安徽理工大学 | A kind of Hopkinson pressure bar diametral compression test test specimen leveling instrument |
| CN107121330A (en) * | 2017-06-09 | 2017-09-01 | 北京工业大学 | The high temperature test specimen tested for Hopkinson bar cools rapidly rod-pulling type device |
| CN107121330B (en) * | 2017-06-09 | 2019-06-28 | 北京工业大学 | High temperature test specimen for Hopkinson bar experiment cools down rapidly rod-pulling type device |
| CN107687981A (en) * | 2017-09-21 | 2018-02-13 | 南京理工大学 | A kind of liquid nitrogen cooling device suitable for low-temperature dynamic Experiments of Machanics |
| CN107687981B (en) * | 2017-09-21 | 2023-12-15 | 南京理工大学 | Liquid nitrogen cooling device suitable for low temperature dynamic mechanical experiment |
| CN108613863A (en) * | 2018-05-25 | 2018-10-02 | 哈尔滨工程大学 | A kind of quick cooling device for low temperature SHPB impact experiments |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20150211 Termination date: 20171204 |