CN202420993U - Experiment device for high-speed cold forming simulation experiments - Google Patents
Experiment device for high-speed cold forming simulation experiments Download PDFInfo
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- CN202420993U CN202420993U CN2011205023942U CN201120502394U CN202420993U CN 202420993 U CN202420993 U CN 202420993U CN 2011205023942 U CN2011205023942 U CN 2011205023942U CN 201120502394 U CN201120502394 U CN 201120502394U CN 202420993 U CN202420993 U CN 202420993U
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- power valve
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- measured material
- drop bar
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Abstract
The utility model relates to an experiment device for high-speed cold forming simulation experiments. A tested material sample is first fixedly arranged at the outlet of a firing pipe arranged on one side of a pneumatic device, a striking rod in the firing pipe is then pushed by the high-pressure air jetted from a mouth of the pneumatic device to strike the tested material sample, at the same time, and a high-speed camera and/or a thermal infrared imager are utilized to record the deformation process of the tested material sample. Because the tested material sample is clamped by the experiment system in an open manner, the deformation process of the tested material sample can be recorded by the high-speed camera and/or the thermal infrared imager, and therefore the experiment device solves the problem that in the process of testing the tested material sample in the prior art, the deformation process of the tested material sample cannot be observed or recorded.
Description
Technical field
The utility model relates to the experimental provision of a kind of cold molding draft experiment that relates in the experiment about the Research on Mechanical Properties of material.
Background technology
It is the metal plastic deformation under the local dynamic impulsion loading environment of high speed that high speed cold breaks into shape; Forming process is comprising many field intensity coupling effects such as heat, power, energy, speed, causes physical mechanics behavior and the physical mechanics behavior of traditional Plastic Forming of metal material in forming process there are differences.In order to further investigate the compacting mechanism that high speed cold is beaten, will obtain the mechanical characteristic of material under high rate of strain condition earlier.To come the experimental provision of test material mechanical characteristic under high rate of strain be split hopkinson press bar (Split Hopkinson Pressure Bar by the most widely-used at present; Be called for short SHPB), it can test material at
-stress-strain curve in
rate of strain scope.In application number is the prospectus of 200620031882.9 Chinese utility model patent a kind of major diameter split hopkinson press bar is disclosed for example; This device promotes drop bar through the gases at high pressure of gun muzzle discharging of its pneumatic means; And drop bar is delivered to bump on the tested sample through incident bar; And then impact effects is delivered on the damping mechanism through transmission bar; In whole knockout process, the deformation effect of measured material sample is judged through the data that high dynamic strain indicator measures on incident bar and transmission bar, still because in test process; The measured material sample is in the closed conduct between incident bar and the transmission bar, so the experimenter can't observe and record the deformation process of sample.
The utility model content
The utility model provides a kind of experimental provision of high speed cold molding draft experiment, is intended to solve in the test process of prior art to the measured material sample problem that the deformation process of measured material sample can't be observed and write down.
The technical scheme of the experimental provision of the cold molding draft experiment of the utility model is following:
A kind of experimental provision of high speed cold molding draft experiment; Comprise pneumatic means and the power valve that is communicated with gun muzzle of pneumatic means; Be equiped with the drop bar that cooperates with the power valve guiding along the length direction of power valve in the power valve; The exit of said power valve is provided with the clamp body that is used for fixing the measured material sample; Said clamp body has and is used to clamping end that the measured material sample is alignd with the outlet of power valve, has between the outlet of said clamp body and power valve to make drop bar stretch out the gap of bump measured material sample behind the power valve, and said gap makes the rear end of drop bar when bump still be in the power valve less than the length of drop bar; Said experimental provision also comprises high-speed camera appearance and/or the thermal infrared imager that is used to take measured material sample deformation process.
Said power valve on perisporium, offer away from the end of said gun muzzle connect the power valve perisporium be used to release the spron of gas.
The inwall of said power valve is provided with along the length direction of power valve being used to of extending and makes said drop bar strike the gathering sill or the feather key at measured material sample place to be detected.
The utility model is through earlier with the fixing exit of the power valve of pneumatic means one side setting of measured material sample; The gases at high pressure that eject of gun muzzle through pneumatic means promote the drop bar bump measured material sample in the power valve then; Simultaneously; Through high-speed camera appearance and/or thermal infrared imager the deformation process of tested sample is carried out record; Because this experimental technique/experimental provision when clamping measured material sample, has adopted the mode of open clamping, thereby has made the deformation process of measured material sample to be noted by high-speed camera appearance and/or thermal infrared imager; And then solved in the test process of prior art to the measured material sample problem that the deformation process of measured material sample can't be observed and write down.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the utility model;
Fig. 2 is the structural representation of pneumatic means among Fig. 1;
Fig. 3 is the structural representation of power valve part among Fig. 1.
Embodiment
The embodiment of the experimental provision of the cold molding draft experiment of the utility model: this experimental provision mainly is made up of pneumatic means 1, power valve 2, clamp body 8, high-speed camera appearance 6 and thermal infrared imager 5; This pneumatic means 1 has the gun muzzle 101 that is used to discharge gases at high pressure; Pneumatic means 1 is provided with the power valve 2 that is communicated with gun muzzle 101 in gun muzzle 101 placements, is equiped with the drop bar 4 that cooperates with power valve 2 guiding along the length direction of power valve 2 in this power valve 2.Power valve 3 exits are provided with the clamp body 8 that is used for fixing tested sample 7, have between the outlet of clamp body 8 and power valve 2 that drop bar 4 does not break away from the gap of power valve 2 when drop bar 4 can strike measured material sample 7.
Wherein, Pneumatic means 1 mainly is made up of device case 111, guiding valve cylinder 112 and slide valve 113; Wherein, an end of the guiding valve cylinder 112 of tubular is provided with the shutoff plate that is used to seal up its opening, and the other end is provided with the slide valve 113 that can stretch out from the opening of guiding valve cylinder 112 in the cavity of guiding valve cylinder 112; Slide valve 113 cooperates with guiding valve cylinder 112 guiding along the length direction of guiding valve cylinder 112, and the shutoff plate on the guiding valve cylinder 112 is provided with the inner chamber of guiding valve cylinder 112 and is communicated with gas pipeline; The device case 111 of tubular is set in guiding valve cylinder 112 outsides; And be respectively arranged with the shutoff plate that is used to seal up its opening at the two ends of device case 111; And guiding valve cylinder 112 and slide valve 113 just are in the space that device case 111 and shutoff plate surround; And gun muzzle 101 just is on the shutoff plate of device case one end, offers the opening that the supplied gas pipeline passes on the shutoff plate of the other end.And; Between device case 111 and guiding valve cylinder 112, has the space that is used to supply the gases at high pressure circulation; The syndeton that is provided with between the periphery of device case 111 through its inwall and guiding valve cylinder 112 is fixedly connected with guiding valve cylinder 112; Offer the passage of the cavity connection of the device case 111 that makes the syndeton both sides on this syndeton; Device case 111 offers the gas passage of communication apparatus housing 111 inner chambers on the perisporium of passage away from a side of said gun muzzle, gas passage is communicated with gun muzzle 101 through the cavity of device case 111.
In addition; On perisporium, offer the spron 201 that connects power valve 2 perisporiums at power valve 2 away from the end of gun muzzle 101; After drop bar 4 is offered spron 201 from the inwall of power valve 2 position is passed through; Gases at high pressure can be discharged from spron 201, thereby when making next working cycle, gases at high pressure can not be trapped in the pneumatic means 1.
When work, high pressure compressed gas is through the air chamber of the respective valves entering guiding valve cylinder 112 of operator's console, and promotion slide valve 113 moves rapidly and closes gun muzzle 101.After the head of slide valve 113 was closed gun muzzle 101, gases at high pressure were filled in the space of the gas passage of offering on the perisporium through device case 111 between device case 111 and guiding valve cylinder 112.When the gas in this space is charged to desired test pressure; Cut off source of the gas; The gas of discharge spool cylinder 112 air chambers makes the head of slide valve 113 break away from from gun muzzle 101 rapidly, just makes gun muzzle 101 open; Make the gases at high pressure in the space between device case 111 and the guiding valve cylinder 112 flow into power valves 2 fast, promote drop bars 4 motions in the power valve 2 through gun muzzle 101.When drop bar 4 from position that power valve 2 is offered spron 201 through the time, gases at high pressure are discharged from spron 201, and drop bar 4 continues motion until bump measured material sample 7.When drop bar 4 bump measured material samples 7, the experimenter notes the deformation process of measured material sample 7 through high-speed camera appearance 6 and thermal infrared imager 5, and whole cold molding draft experiment leaves it at that.
In the above-described embodiments; The experimenter is through the deformation process of high-speed camera appearance and thermal infrared imager record measured material sample; In other embodiments, the experimenter also can be through the deformation process of one in high-speed camera appearance and thermal infrared imager record measured material sample.
In the above-described embodiments; The inwall of power valve is a smooth surface; In other embodiments; Also can be provided with on the inwall of power valve along the length direction of power valve being used to of extending and make drop bar strike the gathering sill or the feather key at measured material sample place to be detected, make the motion of drop bar in power valve have better directivity.
In the above-described embodiments; Pneumatic means in pneumatic means and the prior art in the split hopkinson press bar device bigger respectively; In other embodiments; This pneumatic means also can adopt the pneumatic means commonly used in the split hopkinson press bar device, and the concrete structure of this pneumatic means specifies in application number is the prospectus of 200620031882.9 Chinese utility model patent, no longer details once more.
Claims (3)
1. the experimental provision of a high speed cold molding draft experiment; Comprise pneumatic means and the power valve that is communicated with gun muzzle of pneumatic means; Be equiped with the drop bar that cooperates with the power valve guiding along the length direction of power valve in the power valve; It is characterized in that: the exit of said power valve is provided with the clamp body that is used for fixing the measured material sample; Said clamp body has and is used to clamping end that the measured material sample is alignd with the outlet of power valve, has between the outlet of said clamp body and power valve to make drop bar stretch out the gap of bump measured material sample behind the power valve, and said gap makes the rear end of drop bar when bump still be in the power valve less than the length of drop bar; Said experimental provision also comprises high-speed camera appearance and/or the thermal infrared imager that is used to take measured material sample deformation process.
2. experimental provision according to claim 1 is characterized in that: said power valve on perisporium, offer away from the end of said gun muzzle connect the power valve perisporium be used to release the spron of gas.
3. experimental provision according to claim 1 is characterized in that: the inwall of said power valve is provided with along the length direction of power valve being used to of extending and makes said drop bar strike the gathering sill or the feather key at measured material sample place to be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205023942U CN202420993U (en) | 2011-12-06 | 2011-12-06 | Experiment device for high-speed cold forming simulation experiments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205023942U CN202420993U (en) | 2011-12-06 | 2011-12-06 | Experiment device for high-speed cold forming simulation experiments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202420993U true CN202420993U (en) | 2012-09-05 |
Family
ID=46745747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205023942U Expired - Fee Related CN202420993U (en) | 2011-12-06 | 2011-12-06 | Experiment device for high-speed cold forming simulation experiments |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202420993U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680336A (en) * | 2011-12-06 | 2012-09-19 | 河南科技大学 | Experiment device for high-speed cold-beating simulation experiment |
| CN114459719A (en) * | 2022-03-14 | 2022-05-10 | 河南科技大学 | Horizontal impact test device |
-
2011
- 2011-12-06 CN CN2011205023942U patent/CN202420993U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680336A (en) * | 2011-12-06 | 2012-09-19 | 河南科技大学 | Experiment device for high-speed cold-beating simulation experiment |
| CN102680336B (en) * | 2011-12-06 | 2014-05-21 | 河南科技大学 | Experiment device for high-speed cold-beating simulation experiment |
| CN114459719A (en) * | 2022-03-14 | 2022-05-10 | 河南科技大学 | Horizontal impact test device |
| CN114459719B (en) * | 2022-03-14 | 2024-03-15 | 河南科技大学 | Horizontal impact test device |
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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 |
Granted publication date: 20120905 Termination date: 20141206 |
|
| EXPY | Termination of patent right or utility model |