CN212321335U - High-temperature synchronous system of Hopkinson experimental equipment - Google Patents
High-temperature synchronous system of Hopkinson experimental equipment Download PDFInfo
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- CN212321335U CN212321335U CN201922481008.5U CN201922481008U CN212321335U CN 212321335 U CN212321335 U CN 212321335U CN 201922481008 U CN201922481008 U CN 201922481008U CN 212321335 U CN212321335 U CN 212321335U
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Abstract
The utility model discloses a high temperature synchronization system of Hopkinson experimental facilities, include: the device comprises an incidence rod, a synchronous rod aligning mechanism, a high-temperature furnace, a central support, a transmission rod, a sample bracket, a rack, a synchronous system and a high-temperature furnace control system, wherein the rack is provided with the sample bracket, the top of the sample bracket is provided with the high-temperature furnace, and two ends of a central furnace chamber formed by combining the sample bracket and the high-temperature furnace are respectively provided with an inlet and an outlet of the incidence rod and an inlet and an outlet of the transmission rod; the two sides of the central furnace chamber of the combination of the sample bracket and the high-temperature furnace are respectively provided with a central support, and the central support of the incident rod and the central support of the transmission rod are respectively provided with a synchronous rod aligning mechanism for moving the incident rod and the transmission rod. The utility model discloses can keep synchronous impact test in real time, the accurate required various temperature environment that satisfies test gets rid of the temperature and gathers and the interference of propagation to one-dimensional stress wave, and is easy and simple to handle, directly perceived, prevents personnel's maloperation.
Description
Technical Field
The utility model relates to a mechanics of materials test technical field, in particular to hopkinson experimental facilities's high temperature synchronization system.
Background
Under the Hopkinson experimental conditions of high strain rate, when the mechanical properties at high temperature, about 800 ℃ need to be measured. On one hand, the experimental rod needs to move at a high speed of less than 30m/s in the experimental process, so that a closed space is difficult to form by the high-temperature box, on the other hand, the experimental rod simultaneously plays a role in loading and testing, and the temperature gradient on the experimental rod has a certain influence on the experimental result, so that the mechanical property of the material with high temperature and high strain rate is one of the difficult points of research.
In the original test of utilizing hopkinson pole to carry out material high temperature dynamic mechanical properties, put into the temperature box with sample and a small part experiment pole and heat simultaneously, inevitably form temperature gradient on incident, transmission pole like this, and temperature gradient's existence will produce a certain amount of influence to measurement accuracy, consequently when carrying out data processing, need adopt certain method to revise experimental signal. However, these methods require testing the temperature distribution in the test bar and understanding the rule of the test bar modulus as a function of temperature. A large amount of time is wasted in testing temperature changes, waste of manpower, material resources and financial resources is caused, the experiment is also influenced by the aspects of environment temperature, humidity and the like, and the difficulty of the experiment is increased.
Disclosure of Invention
For overcoming the not enough of prior art, the utility model provides a high temperature synchronization system of Hopkinson experimental facilities.
In order to solve the technical problem, the utility model discloses a technical scheme be:
a high temperature synchronization system of Hopkinson experimental equipment, comprising: the device comprises an incidence rod, a synchronous rod aligning mechanism, a high-temperature furnace, a central support, a transmission rod, a sample bracket, a rack, a synchronous system and a high-temperature furnace control system, wherein the rack is provided with the sample bracket, the top of the sample bracket is provided with the high-temperature furnace, and two ends of a central furnace chamber formed by combining the sample bracket and the high-temperature furnace are respectively provided with an inlet and an outlet of the incidence rod and an inlet and an outlet of the transmission rod; two sides of a central furnace chamber combined by the sample bracket and the high-temperature furnace are respectively provided with a central support, the central support of the incident rod and the central support of the transmission rod are synchronous rod aligning mechanisms, the outer sides of the central support of the incident rod and the central support of the transmission rod are respectively provided with a movable incident rod and a movable transmission rod, each synchronous rod aligning mechanism comprises a rod aligning mechanism and a grabbing rod, and the rod aligning mechanism and the grabbing rods are respectively connected with a synchronous control system through pipelines; and the high-temperature furnace is connected with a high-temperature furnace control system.
The high-temperature synchronization system of the Hopkinson experimental equipment is characterized in that an air source is communicated with a butt-rod air valve B and a grab-rod air valve A through an electrical control system, the butt-rod air valve B is communicated with a butt-rod through an in-out loop, and the grab-rod air valve A is communicated with a grab rod through a loop.
A high-temperature synchronous system of Hopkinson experimental equipment is characterized in that a high-temperature furnace control system is formed by electrically connecting a real-time temperature, a set temperature and a master switch touch screen with an upper heater piece R1 and a lower heater piece R2 through cables.
Due to the adoption of the technical scheme, the utility model has the advantages that:
the utility model discloses a synchronous mechanical properties measurement system of high temperature high strain rate is the advanced separation heating device that present company newly developed. The high-temperature synchronous system can simulate a sample: rock, concrete, in a high temperature environment: the dynamic mechanical property of about 800 ℃ can realize impact tests on samples such as rocks and concrete at different temperature levels.
The advantages are as follows:
1. the interference of temperature on the acquisition and propagation of the one-dimensional stress wave can be eliminated, and no heat loss exists.
2. The synchronous impact test can be maintained in real time, and various temperature environments required by the test can be accurately met.
3, the system can be applied to samples of various materials and specifications.
4. The operation is simple, convenient and visual, and misoperation of personnel is prevented.
Drawings
Fig. 1 is a schematic structural diagram of a high-temperature synchronization system of a hopkinson experimental facility.
Fig. 2 is a schematic sectional structure view of a high-temperature synchronization system of the hopkinson experimental facility.
Fig. 3 is a working diagram of a synchronous control system of the hopkinson experiment device.
Fig. 4 is a high-temperature furnace control system diagram of the hopkinson experimental facility.
Detailed Description
The following describes the present invention in further detail with reference to the drawings and examples.
As shown in fig. 1, 2, 3 and 4, a high-temperature synchronization system of a hopkinson experimental facility includes: the device comprises an incidence rod 1, a synchronous rod aligning mechanism 2, a high-temperature furnace 3, a central support 4, a transmission rod 5, a sample bracket 6, a rack 7, a synchronous system and a high-temperature furnace control system, wherein the rack 7 is provided with the sample bracket 6, the top of the sample bracket 6 is provided with the high-temperature furnace 3, and two ends of a central furnace chamber formed by combining the sample bracket 6 and the high-temperature furnace 3 are respectively provided with an inlet and an outlet of the incidence rod 1 and an inlet and an outlet of the transmission rod 5; two sides of a central furnace chamber combined by a sample bracket 6 and a high-temperature furnace 3 are respectively provided with a central support 4, the outer sides of the central support 4 of an incident rod 1 and the central support 4 of a transmission rod 5 are respectively provided with a synchronous rod aligning mechanism 2 for moving the incident rod 1 and the transmission rod 5, the synchronous rod aligning mechanism 2 comprises an aligning rod 2.1 and a grabbing rod 2.2, and the aligning rod 2.1 and the grabbing rod 2.2 are respectively connected with a synchronous control system through pipelines; the high-temperature furnace 3 is connected with a high-temperature furnace control system.
The synchronous system is respectively communicated with a rod aligning air valve B and a rod grabbing air valve A through an air source 2.3 and an electrical control system 2.4, the rod aligning air valve B is communicated with a rod aligning 2.1 through an in-out loop, and the rod grabbing air valve A is communicated with a rod grabbing 2.2 through a loop.
The high-temperature furnace control system is formed by electrically connecting a real-time temperature, a set temperature and a main switch touch screen with an upper heater sheet R1 and a lower heater sheet R2 through cables.
A synchronization method of a Hopkinson experimental equipment high-temperature synchronization system adopts a separated heating device to eliminate the influence of temperature gradient on experimental results, and comprises the following steps:
firstly, a simulation sample, a simulation rock sample or a simulation concrete sample is placed on a sample bracket 6 in a high-temperature furnace 3 and heated at a high temperature of 800 ℃.
Meanwhile, the incident rod 1 and the transmission rod 5 are respectively placed on the respective central supports 4.
Under the high-temperature heating environment of 800 ℃, the synchronous system works and respectively grasps the incident rod 1 and the transmission rod 5 through the grasping rod air valve A and the grasping rod 2.1.
Then, the incident rod 1 and the transmission rod 5 are controlled to oppositely and synchronously enter the high-temperature furnace 3 through a rod aligning air valve B and a rod aligning 2.2 of the synchronous rod aligning mechanism 2 and impact a simulation sample on the sample bracket 6; carrying out an impact test on the dynamic mechanical property at the high temperature of 800 ℃; the impact test under different temperature grades can be realized to sample rock, concrete.
The pair rod 2.1 and the grabbing rod 2.2 of the synchronous pair rod mechanism 2 are respectively communicated with a synchronous control system through pipelines; the high-precision machine is controlled within 0.05 mm.
The dynamic mechanical property test of samples of various materials at the high temperature of below 800 ℃ can be simulated, and the interference of temperature on the propagation and collection of one-dimensional stress waves such as a rod piece, a strain gauge and the like is eliminated; the high-temperature synchronous system is suitable for rod piece experiments with various rod diameters phi 1-100 mm.
The system adopts separated heating, can reach the simulated environment temperature of 800 ℃ at the maximum at room temperature, and meets the requirement of most experimental rods on high temperature. The high-temperature furnace part is also provided with a professional digital display screen, so that the required temperature can be accurately set, the current experimental temperature can be captured in real time, and the requirement on the aspect of temperature control in an experiment is greatly met. The system is also provided with a manipulator which can be matched with a synchronous impact mechanism to eliminate the interference of temperature on the propagation and collection of one-dimensional stress waves such as the rod piece, the strain gauge and the like. The high-temperature synchronous system is suitable for various rod diameters. A new generation of heat preservation measures is adopted, so that errors caused by heat loss do not exist in the temperature in the experimental process, and the loss is within 2 percent.
Claims (3)
1. The utility model provides a high temperature synchronization system of Hopkinson experimental apparatus which characterized in that: the method comprises the following steps: the device comprises an incidence rod (1), a synchronous rod aligning mechanism (2), a high-temperature furnace (3), a central support (4), a transmission rod (5), a sample bracket (6), a rack (7), a synchronous system and a high-temperature furnace control system, wherein the rack (7) is provided with the sample bracket (6), the top of the sample bracket (6) is provided with the high-temperature furnace (3), and the two ends of a central furnace chamber, combined with the high-temperature furnace (3), of the sample bracket (6) are respectively provided with an inlet and an outlet of the incidence rod (1) and an inlet and an outlet of the transmission rod (5); two sides of a central furnace chamber combined by a sample bracket (6) and a high-temperature furnace (3) are respectively provided with a central support (4), the outer sides of the central support (4) of an incident rod (1) and the central support (4) of a transmission rod (5) are respectively provided with a synchronous rod aligning mechanism (2) for moving the incident rod (1) and the transmission rod (5), the synchronous rod aligning mechanism (2) comprises a rod aligning mechanism (2.1) and a grabbing rod (2.2), and the rod aligning mechanism (2.1) and the grabbing rod (2.2) are respectively connected with a synchronous control system through pipelines; the high-temperature furnace (3) is connected with a high-temperature furnace control system.
2. The high-temperature synchronous system of the Hopkinson experimental facility as claimed in claim 1, wherein: the synchronous system is respectively communicated with a rod aligning air valve B and a rod grabbing air valve A through an air source (2.3) and an electrical control system 2.4, the rod aligning air valve B is communicated with a rod aligning device (2.1) through an in-out loop, and the rod grabbing air valve A is communicated with a grabbing rod (2.2) through a loop.
3. The high-temperature synchronous system of the Hopkinson experimental facility as claimed in claim 1, wherein: the high-temperature furnace control system is formed by electrically connecting a real-time temperature, a set temperature and a main switch touch screen with an upper heater sheet R1 and a lower heater sheet R2 through cables.
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| CN201922481008.5U CN212321335U (en) | 2019-12-31 | 2019-12-31 | High-temperature synchronous system of Hopkinson experimental equipment |
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| CN201922481008.5U CN212321335U (en) | 2019-12-31 | 2019-12-31 | High-temperature synchronous system of Hopkinson experimental equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109185A (en) * | 2021-03-02 | 2021-07-13 | 南京航空航天大学 | High-temperature service environment simulation device for high-speed hard object impact test |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109185A (en) * | 2021-03-02 | 2021-07-13 | 南京航空航天大学 | High-temperature service environment simulation device for high-speed hard object impact test |
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