Dynamic mechanical test device for aluminum alloy rolled plate at high strain rate

Abstract

The invention discloses a dynamic mechanical test device for an aluminum alloy rolled plate at a high strain rate, and belongs to the technical field of aluminum alloy plate detection, the dynamic mechanical test device comprises a detection seat for placing an aluminum alloy plate and an impact hydraulic cylinder, and the outer side wall of the output end of the impact hydraulic cylinder is fixedly connected with a buffer ring; the top end of the detection seat is provided with two symmetrical pressure-bearing assemblies. Through the arrangement of the pressure-bearing assembly and the buffer ring, an electric push rod can be used for pushing a pressure-bearing semi-ring to buffer the residual impact kinetic energy of an impact hydraulic cylinder, so that the protection of a lower detection structure is realized, and how the pressure-bearing ultimate strength of a tested aluminum alloy plate is calculated through the compression stress of a telescopic seat; and meanwhile, by arranging a crimping assembly and a power connection button, a hydraulic telescopic rod can stretch out by utilizing hydraulic change generated during impact, and a crimping elastic sheet and the power connection button are butted to conduct a circuit of a feedback controller, so that the result of detecting whether the bearing strength of the aluminum alloy plate is qualified or not is more intuitive.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum alloy plate detection, in particular to a dynamic mechanical testing device for aluminum alloy rolled plates at a high strain rate. Background Art

[0002] Aluminum alloy rolled plates are widely used in automobiles. They are mainly used to manufacture various automobile parts to achieve lightweight and improve performance. Automobile anti-collision parts mostly use aluminum alloy plates with high strain rate to absorb most of the kinetic energy when hit.

[0003] When aluminum alloy rolled plates with high strain rate are damaged by impact, they will instantly produce large deformation and invade deeper parts, and then recover to the deformed position under the action of restoring force. At the same time, when impacted, the deformation position of the aluminum alloy plate is irregular, making it difficult to measure the instantaneous invasion position and recovery deformation position of the impact, and it is also impossible to intuitively judge the absorption of impact kinetic energy by the aluminum alloy plate based on the deformation position. It is difficult to determine whether the aluminum alloy plate has reached the pressure limit during the high strain process, which increases the difficulty of subsequent detection and reduces the accuracy. Therefore, a dynamic mechanical test device for aluminum alloy rolled plates under high strain rate is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that when an aluminum alloy rolled plate with a high strain rate is damaged by impact, it will instantly produce a large deformation and invade into a deeper position, and then recover to the deformed position under the action of the restoring force. At the same time, when it is impacted, the deformation position of the aluminum alloy plate is irregular, making it difficult to measure the instantaneous invasion position and the recovery deformation position when it is impacted, and it is also impossible to intuitively judge the absorption of the aluminum alloy plate to the impact kinetic energy based on the deformation position. A dynamic mechanical testing device for aluminum alloy rolled plates under high strain rate is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A dynamic mechanical testing device for aluminum alloy rolled plates at high strain rates comprises a test seat for placing aluminum alloy plates and an impact hydraulic cylinder, a buffer ring is fixedly connected to the outer wall of the output end of the impact hydraulic cylinder, and two mutually symmetrical pressure-bearing components are arranged on the top of the test seat;

[0007] A receiving groove is provided at the top of the detection seat, and a fixing seat is fixedly connected to the inner side wall of the receiving groove. A plurality of retaining holes are provided on the fixing seat, and a detection tube is connected to the inner side wall of the retaining hole, and a piston plate is connected to the inner side wall of the detection tube, and a pressure column head is connected to the top of the piston plate through a pressure rod. An induction arc plate is provided on one side of the detection tube, and a transfer cavity seat is connected to the bottom end of the detection tube through two transfer tubes. The top of the transfer cavity seat is connected to a feedback controller through two branch tubes, and a crimping assembly is provided in the branch tube.

[0008] Preferably, a plurality of positioning concave plates are fixedly connected to the top of the detection seat, a top seat is fixedly connected to the top of the detection seat via a plurality of support rods, and a bottom end of the top seat is fixedly connected to the top of the impact hydraulic cylinder.

[0009] Preferably, the pressure-bearing component consists of an electric push rod and a pressure-bearing half ring, a telescopic seat is fixedly connected to the top of the detection seat, the top of the telescopic seat is fixedly connected to the electric push rod, the output end of the electric push rod is fixedly connected to the outer arc surface of the pressure-bearing half ring, and a pressure sensor is arranged in the telescopic seat.

[0010] Preferably, the inner wall of the retaining hole on the fixing seat is fixedly connected to the outer wall of the detection tube, the inner wall of the detection tube is slidably connected to the pressure rod through a piston plate, and the top end of the pressure rod is fixedly connected to the bottom end of the pressure column head.

[0011] Preferably, a photoelectric sensor is fixedly connected to the top of the piston plate, the induction arc plate is located on one side of the detection tube, the bottom end of the induction arc plate is fixedly connected to the top of the feedback controller, the detection tube is filled with conductive liquid, and the bottom end of the piston plate is connected to a reset spring.

[0012] Preferably, the bottom end of the detection tube is fixedly connected to the adapter cavity seat through two adapter tubes, and the bottom end of the adapter cavity seat is fixedly connected to the inner end surface of the receiving groove of the detection seat.

[0013] Preferably, the top of the transfer cavity seat is fixedly connected to the bottom of the feedback controller via two branch pipes, and a film is fixedly connected to the inner side wall of the bottom of the branch pipe.

[0014] Preferably, the crimping assembly consists of a hydraulic telescopic rod and a crimping spring sheet, the inner side wall of the branch pipe is fixedly connected to a fixing ring, the inner side wall of the fixing ring is fixedly connected to the hydraulic telescopic rod, the bottom end of the feedback controller is connected to a test power supply, the test power supply is electrically connected to the two crimping spring sheets, and a power button electrically connected to the feedback controller is arranged above the crimping spring sheet.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Through the setting of the pressure-bearing component and the buffer ring, this scheme can use the electric push rod to push the pressure-bearing half ring to buffer the remaining impact kinetic energy of the impact hydraulic cylinder, thereby protecting the detection structure below, and calculating the pressure-bearing limit strength of the tested aluminum alloy plate through the compression force of the telescopic seat.

[0017] 2. Through the setting of the piston plate and the induction arc plate, this scheme can utilize the downward movement distance of the piston plate when it is impacted to drive the position change of the opposing photoelectric sensor on the induction arc plate, so as to detect the deformation position of the aluminum alloy plate when it is subjected to the maximum invasion during the impact test, and the deformation position after recovery, so as to make the detection result more accurate and comprehensive.

[0018] 3. Through the setting of the crimping assembly and the connecting button, this scheme can utilize the hydraulic changes generated during impact to extend the hydraulic telescopic rod, allowing the crimping spring to connect with the connecting button to connect the circuit of the feedback controller, making the test result of whether the pressure strength test of the aluminum alloy plate is qualified more intuitive and improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the dynamic mechanical testing device for aluminum alloy rolled plates at a high strain rate proposed by the present invention;

[0020] Figure 2 It is an assembly diagram of the dynamic mechanical testing device for aluminum alloy rolled plates at high strain rate proposed by the present invention;

[0021] Figure 3 It is a schematic structural diagram of a pressure-bearing component in a dynamic mechanical testing device for aluminum alloy rolled plates at a high strain rate proposed by the present invention;

[0022] Figure 4 It is a schematic structural diagram of a fixing seat in a dynamic mechanical testing device for aluminum alloy rolled plates at a high strain rate proposed by the present invention;

[0023] Figure 5 It is a structural schematic diagram of the position of the opposite-beam photoelectric sensor in the dynamic mechanical testing device for aluminum alloy rolled plates at a high strain rate proposed by the present invention;

[0024] Figure 6 It is a schematic diagram of the structure below the feedback controller in the dynamic mechanical testing device for aluminum alloy rolled plates at high strain rate proposed by the present invention;

[0025] Figure 7 It is a structural schematic diagram of a crimping assembly in a dynamic mechanical testing device for aluminum alloy rolled plates at a high strain rate proposed by the present invention;

[0026] Figure 8 for Figure 7 Enlarged view of point A in the middle.

[0027] In the figure: 1. detection seat; 2. impact hydraulic cylinder; 3. aluminum alloy plate; 4. positioning concave plate; 5. top seat; 6. buffer ring; 7. telescopic seat; 8. electric push rod; 9. pressure-bearing half ring; 10. fixed seat; 11. detection tube; 12. piston plate; 13. pressure-bearing rod; 14. pressure-bearing column head; 15. through-beam photoelectric sensor; 16. induction arc plate; 17. adapter tube; 18. adapter cavity seat; 19. branch pipe; 20. fixing ring; 21. hydraulic telescopic rod; 22. test power supply; 23. crimping spring; 24. connecting button; 25. feedback controller. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Example, see Figures 1 to 8 , a dynamic mechanical testing device for aluminum alloy rolled plates at high strain rates, comprising a test seat 1 for placing an aluminum alloy plate 3 and an impact hydraulic cylinder 2, a buffer ring 6 is fixedly connected to the outer wall of the output end of the impact hydraulic cylinder 2, and two mutually symmetrical pressure-bearing components are arranged on the top of the test seat 1;

[0032] Furthermore, a plurality of positioning concave plates 4 are fixedly connected to the top of the detection seat 1, a top seat 5 is fixedly connected to the top of the detection seat 1 through a plurality of support rods, a bottom end of the top seat 5 is fixedly connected to the top of the impact hydraulic cylinder 2, a pressure-bearing assembly is composed of an electric push rod 8 and a pressure-bearing half ring 9, a telescopic seat 7 is fixedly connected to the top of the detection seat 1, a top end of the telescopic seat 7 is fixedly connected to the electric push rod 8, an output end of the electric push rod 8 is fixedly connected to the outer arc surface of the pressure-bearing half ring 9, and a pressure sensor is arranged in the telescopic seat 7;

[0033] It should be noted that: after the feedback controller 25 is powered on, it will also synchronously control the electric push rod 8 on the telescopic seat 7 to start. After the electric push rod 8 is started, it will be pushed out instantly, so that the pressure-bearing half ring 9 can be quickly pushed to the bottom end of the buffer ring 6, and the kinetic energy that is not absorbed by the impact hydraulic cylinder 2 is buffered and supported to avoid damage to the detection structure below. The compression of the telescopic seat 7 will also measure the bearing pressure through the internal pressure sensor, and then the remaining unabsorbed impact kinetic energy of the impact hydraulic cylinder 2 is obtained, and the impact kinetic energy that can be absorbed by the aluminum alloy plate 3 when it is subjected to the impact limit is determined.

[0034] The above advantages are as follows: the electric push rod 8 can be used to push the pressure-bearing half ring 9 to buffer the remaining impact kinetic energy of the impact hydraulic cylinder 2, thereby protecting the detection structure below, and calculating the pressure-bearing limit strength of the tested aluminum alloy plate 3 through the compression force of the telescopic seat 7;

[0035] A receiving groove is provided at the top of the detection seat 1, and a fixing seat 10 is fixedly connected to the inner side wall of the receiving groove. A plurality of retaining holes are provided on the fixing seat 10, and a detection tube 11 is connected to the inner side wall of the retaining hole. A piston plate 12 is connected to the inner side wall of the detection tube 11. A pressure-bearing column head 14 is connected to the top of the piston plate 12 through a pressure-bearing rod 13. An induction arc plate 16 is provided on one side of the detection tube 11;

[0036] Furthermore, the inner wall of the retaining hole on the fixing seat 10 is fixedly connected to the outer wall of the detection tube 11, the inner wall of the detection tube 11 is slidably connected to the pressure-bearing rod 13 through the piston plate 12, the top of the pressure-bearing rod 13 is fixedly connected to the bottom of the pressure-bearing column head 14, the top of the piston plate 12 is fixedly connected to the photoelectric sensor 15, the induction arc plate 16 is located on one side of the detection tube 11, the bottom of the induction arc plate 16 is fixedly connected to the top of the feedback controller 25, the detection tube 11 is filled with conductive liquid, and the bottom of the piston plate 12 is connected to a reset spring;

[0037] It should be noted that: the aluminum alloy plate 3 to be tested is placed on the detection seat 1, and is limited by multiple positioning concave plates 4, and then the impact hydraulic cylinder 2 is started to impact the aluminum alloy plate 3 after being limited. The high strain rate characteristics of the aluminum alloy plate 3 will produce a large deformation in a short time. The deformation of the aluminum alloy plate 3 will squeeze and impact the multiple pressure-bearing column heads 14 on the fixed seat 10. After the pressure-bearing column heads 14 are compressed, they squeeze the piston plate 12 through the pressure-bearing rod 13, so that the piston plate 12 squeezes the conductive liquid in the detection tube 11. The downward movement of the piston plate 12 will drive the opposing photoelectric sensor 15 to move downward, so that the downward movement distance of the opposing photoelectric sensor 15 can be monitored in real time on the sensing arc plate 16, which is convenient for testing the deepest downward position of the opposing photoelectric sensor 15 and the position of the opposing photoelectric sensor 15 after the impact ends, so as to obtain the deformation position of the aluminum alloy plate 3 when it is subjected to the maximum invasion during the test and the deformation position after recovery;

[0038] The above benefits are as follows: in this way, the downward movement distance of the piston plate 12 when impacted can be used to drive the position change of the photoelectric sensor 15 on the sensing arc plate 16, so as to detect the deformation position of the aluminum alloy plate 3 when it is subjected to the maximum invasion during the impact test, and the deformation position after recovery, so that the detection result is more accurate and comprehensive;

[0039] The bottom end of the detection tube 11 is connected to a transfer cavity seat 18 through two transfer tubes 17, and the top end of the transfer cavity seat 18 is connected to a feedback controller 25 through two branch pipes 19, and a crimping assembly is arranged in the branch pipe 19;

[0040] Further, the bottom end of the detection tube 11 is fixedly connected to the adapter cavity seat 18 through two adapter tubes 17, the bottom end of the adapter cavity seat 18 is fixedly connected to the inner end surface of the storage groove of the detection seat 1, and the top of the adapter cavity seat 18 is fixedly connected to the bottom end of the feedback controller 25 through two branch tubes 19. The inner side wall of the bottom end of the branch tube 19 is fixedly connected with a film. The crimping assembly consists of a hydraulic telescopic rod 21 and a crimping spring piece 23. The inner side wall of the branch tube 19 is fixedly connected with a fixing ring 20. The inner side wall of the fixing ring 20 is fixedly connected to the hydraulic telescopic rod 21. The bottom end of the feedback controller 25 is connected to a test power supply 22, and the test power supply 22 is electrically connected to the two crimping spring pieces 23. A power button 24 electrically connected to the feedback controller 25 is arranged above the crimping spring piece 23;

[0041] It should be noted that: if the impact strength set by the impact hydraulic cylinder 2 is greater than the bearing strength of the aluminum alloy plate 3, the impact kinetic energy of the impact hydraulic cylinder 2 will not be completely absorbed. In this process, the conductive liquid in the detection tube 11 will be compressed to the limit, and the conductive liquid will enter the adapter cavity seat 18 through the adapter tube 17, and then impact and destroy the film at the bottom of the branch tube 19, so that the conductive liquid will impact upward through the branch tube 19, and then the conductive liquid will enter the hydraulic telescopic rod 21 at the fixed ring 20, so that the hydraulic telescopic rod 21 extends and squeezes the crimping spring piece 23. The crimping spring piece 23 will be elastically deformed under pressure and contact the power button 24 of the feedback controller 25, so that the crimping spring piece 23 of the test power supply 22 is connected to the feedback controller 25 through the power button 24, and then the feedback controller 25 is started to send a pressure limit signal, indicating that the pressure of the tested aluminum alloy plate 3 has reached the limit state;

[0042] The above advantages are as follows: the hydraulic pressure change generated during impact can be utilized to extend the hydraulic telescopic rod 21, so that the crimping spring 23 and the power button 24 can be connected to conduct the circuit of the feedback controller 25, so that the result of testing whether the pressure bearing strength of the aluminum alloy plate 3 is qualified is more intuitive, thereby improving the detection efficiency;

[0043] When the present invention is in use, the aluminum alloy plate 3 to be tested is placed on the detection seat 1, and a plurality of positioning concave plates 4 are used to limit the position, and then the impact hydraulic cylinder 2 is started to impact the aluminum alloy plate 3 after limiting the position. The high strain rate characteristics of the aluminum alloy plate 3 will produce a large deformation in a short time. The deformation of the aluminum alloy plate 3 will squeeze and impact the multiple pressure-bearing column heads 14 on the fixed seat 10. After the pressure-bearing column heads 14 are compressed, they squeeze the piston plate 12 through the pressure-bearing rod 13, so that the piston plate 12 squeezes the conductive liquid in the detection tube 11. The downward movement of the piston plate 12 will drive the corresponding photoelectric sensor 15 to move downward, so that the corresponding photoelectric sensor 1 The downward movement distance of the piston plate 12 can be monitored in real time on the sensing arc plate 16, which is convenient for testing the deepest downward movement position of the opposing photoelectric sensor 15 and the position of the opposing photoelectric sensor 15 after the impact is completed, so as to obtain the deformation position of the aluminum alloy plate 3 when it is subjected to the maximum invasion during the test and the deformation position after recovery. In this way, the downward movement distance of the piston plate 12 when subjected to the impact can be used to drive the position change of the opposing photoelectric sensor 15 on the sensing arc plate 16, so as to detect the deformation position of the aluminum alloy plate 3 when it is subjected to the maximum invasion and the deformation position after recovery during the impact test, so that the detection result is more accurate and comprehensive;

[0044] If the impact strength set by the impact hydraulic cylinder 2 is greater than the bearing strength of the aluminum alloy plate 3, the impact kinetic energy of the impact hydraulic cylinder 2 will not be completely absorbed. In this process, the conductive liquid in the detection tube 11 will be compressed to the limit, and the conductive liquid will enter the adapter cavity seat 18 through the adapter tube 17, and then impact and destroy the film at the bottom of the branch tube 19, so that the conductive liquid will impact upward through the branch tube 19, and the conductive liquid will enter the hydraulic telescopic rod 21 at the fixing ring 20, so that the hydraulic telescopic rod 21 extends, and squeezes the crimping spring piece 23, and the crimping spring piece 23 will be elastically deformed under pressure. The pressure-bearing spring 23 of the test power supply 22 is changed, and contacts with the power button 24 of the feedback controller 25, so that the pressure-bearing spring 23 of the test power supply 22 is connected to the circuit of the feedback controller 25 through the power button 24, and then the feedback controller 25 is started to send a pressure limit signal, indicating that the pressure of the tested aluminum alloy plate 3 has reached the limit state. In this way, the hydraulic pressure change generated during the impact can be used to extend the hydraulic telescopic rod 21, so that the pressure-bearing spring 23 and the power button 24 are connected to the circuit of the feedback controller 25, so that the result of the pressure strength test of the aluminum alloy plate 3 is more intuitive, thereby improving the detection efficiency;

[0045] After the feedback controller 25 is energized, it will also synchronously control the electric push rod 8 on the telescopic seat 7 to start. After the electric push rod 8 is started, it will be pushed out instantly, so that the pressure-bearing half ring 9 can be quickly pushed to the bottom end of the buffer ring 6, and the kinetic energy that is not absorbed by the impact hydraulic cylinder 2 is buffered and supported to avoid damage to the detection structure below. The compression of the telescopic seat 7 will also measure the bearing pressure through the internal pressure sensor, and then the remaining unabsorbed impact kinetic energy of the impact hydraulic cylinder 2 is obtained, and the impact kinetic energy that can be absorbed by the aluminum alloy plate 3 when it is subjected to the impact limit is determined. In this way, the electric push rod 8 can be used to push the pressure-bearing half ring 9 to buffer the remaining impact kinetic energy of the impact hydraulic cylinder 2, thereby protecting the detection structure below, and the pressure limit strength of the tested aluminum alloy plate 3 can be calculated through the compression force of the telescopic seat 7.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dynamic mechanical testing device for aluminum alloy rolled plates at high strain rates, comprising a test seat (1) for placing an aluminum alloy plate (3) and an impact hydraulic cylinder (2), characterized in that: A buffer ring (6) is fixedly connected to the outer side wall of the output end of the impact hydraulic cylinder (2), and two mutually symmetrical pressure-bearing components are arranged on the top of the detection seat (1); The detection seat (1) has a receiving groove at the top, and a fixing seat (10) is fixedly connected to the inner wall of the receiving groove. The fixing seat (10) has a plurality of retaining holes. The inner wall of the retaining hole is connected to a detection tube (11). The inner wall of the detection tube (11) is connected to a piston plate (12). The top of the piston plate (12) is connected to a pressure-bearing column head (14) via a pressure-bearing rod (13). An induction arc plate (16) is provided on one side of the detection tube (11). The bottom end of the detection tube (11) is connected to a transfer cavity seat (18) via two transfer tubes (17). The top end of the transfer cavity seat (18) is connected to a feedback controller (25) via two branch pipes (19). A crimping assembly is provided in the branch pipe (19).

2. The dynamic mechanical testing device for aluminum alloy rolled plate at high strain rate according to claim 1, characterized in that: The top end of the detection seat (1) is fixedly connected to a plurality of positioning concave plates (4), the top end of the detection seat (1) is fixedly connected to a top seat (5) via a plurality of support rods, and the bottom end of the top seat (5) is fixedly connected to the top end of the impact hydraulic cylinder (2).

3. The dynamic mechanical testing device for aluminum alloy rolled plate at high strain rate according to claim 1, characterized in that: The pressure-bearing component is composed of an electric push rod (8) and a pressure-bearing half ring (9); the top of the detection seat (1) is fixedly connected to a telescopic seat (7); the top of the telescopic seat (7) is fixedly connected to the electric push rod (8); the output end of the electric push rod (8) is fixedly connected to the outer arc surface of the pressure-bearing half ring (9); and a pressure sensor is arranged in the telescopic seat (7).

4. The dynamic mechanical testing device for aluminum alloy rolled plate at high strain rate according to claim 1, characterized in that: The inner wall of the retaining hole on the fixing seat (10) is fixedly connected to the outer wall of the detection tube (11), the inner wall of the detection tube (11) is slidably connected to the pressure-bearing rod (13) through the piston plate (12), and the top end of the pressure-bearing rod (13) is fixedly connected to the bottom end of the pressure-bearing column head (14).

5. The dynamic mechanical testing device for aluminum alloy rolled plate at high strain rate according to claim 1, characterized in that: The top end of the piston plate (12) is fixedly connected to a photoelectric sensor (15); the induction arc plate (16) is located on one side of the detection tube (11); the bottom end of the induction arc plate (16) is fixedly connected to the top end of a feedback controller (25); the detection tube (11) is filled with conductive liquid; and the bottom end of the piston plate (12) is connected to a reset spring.

6. The dynamic mechanical testing device for aluminum alloy rolled plate at high strain rate according to claim 1, characterized in that: The bottom end of the detection tube (11) is fixedly connected to the adapter cavity seat (18) via two adapter tubes (17), and the bottom end of the adapter cavity seat (18) is fixedly connected to the inner end surface of the receiving groove of the detection seat (1).

7. The dynamic mechanical testing device for aluminum alloy rolled plate at high strain rate according to claim 1, characterized in that: The top of the transfer cavity seat (18) is fixedly connected to the bottom of the feedback controller (25) via two branch pipes (19), and a film is fixedly connected to the inner side wall of the bottom of the branch pipe (19).

8. The dynamic mechanical testing device for aluminum alloy rolled plate at high strain rate according to claim 1, characterized in that: The crimping assembly is composed of a hydraulic telescopic rod (21) and a crimping spring sheet (23); the inner side wall of the branch pipe (19) is fixedly connected with a fixing ring (20); the inner side wall of the fixing ring (20) is fixedly connected with the hydraulic telescopic rod (21); the bottom end of the feedback controller (25) is connected with a test power supply (22); the test power supply (22) is electrically connected with two crimping spring sheets (23); and a power button (24) electrically connected with the feedback controller (25) is arranged above the crimping spring sheet (23).

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