Tension, compression and shear testing machine for pasty energetic semi-solid slurry
By designing a tensile, compressive and shear testing machine, the problem that traditional rheometers cannot effectively characterize paste-like energetic semi-solid slurries was solved, rheological property tests under various stress states were realized, and the accuracy and reliability of the test were improved.
Patent Information
- Application Number
- CN202511129577.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-13
- Publication Date
- 2025-10-17
AI Technical Summary
Traditional rheometer devices cannot effectively characterize paste-like energetic semi-solid slurries with coarse particles and long fibers, and cannot conduct rheological mechanical experimental studies under the coupling of multiple external conditions.
A tensile, compressive and shear testing machine was designed. It uses an electric cylinder and a sensor system to perform various force tests on pasty energetic semi-solid slurries. Combined with a high-speed camera and a heating plate, it provides rheological property analysis under various test force and temperature conditions.
It realizes the true reflection of various stress states of pasty energetic semi-solid slurry, improves the accuracy and reliability of the test, and is suitable for rheological property testing under complex stress states.
Smart Images
Figure CN120801007A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of test equipment, in particular to a tension-compression-shear testing machine for paste-like energetic semi-solid slurry. BACKGROUND
[0002] The manufacturing process (mixing, pouring, and pressure extension) of energetic materials (such as explosives, propellants, etc.) involves complex rheological behavior, and rheological mechanics plays a key role in the manufacturing process. The rheological mechanical properties of energetic materials are important for studying their deformation and flow behavior under external force, which is of great significance for improving their safety, reliability, and efficiency. Traditional rheometer devices are suitable for viscous and highly flowable fluid substances. As the solid content of the material increases, the material becomes paste-like, and traditional rotary rheometers cannot well characterize materials with coarse particles and long fibers. At the same time, it is impossible to conduct rheological mechanical test research on materials under multiple external conditions. Therefore, at the present stage, a tension-compression-shear testing machine is needed to solve the problem of single stress in the rheological test of high solid content energetic slurry in the prior art. SUMMARY
[0003] The present application aims to provide a tension-compression-shear testing machine for paste-like energetic semi-solid slurry to solve the problem of single stress in the rheological test of high solid content energetic slurry in the prior art, which cannot truly reflect the rheological properties under comprehensive stress state.
[0004] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:
[0005] A tension-compression-shear testing machine for paste-like energetic semi-solid slurry, comprising a cabinet, a mounting frame and a first electric cylinder are arranged on the cabinet, a fixed frame and a moving frame are respectively arranged on the mounting frame, a fixed block is arranged on the fixed frame, two groups of stretching tools are arranged between the fixed block and the extension rod of the first electric cylinder, a plug is arranged between the two groups of stretching tools, a connecting seat is arranged on each of the two groups of stretching tools, one of the connecting seats is connected with a connector, the connector is connected with a first sensor, the first sensor is connected with the first electric cylinder, the other connecting seat is connected with the fixed block; a second electric cylinder is arranged in the cabinet, the top end of the second electric cylinder is connected with the bottom surface of the moving frame, a third electric cylinder and a guide rail strip are respectively arranged on the moving frame, the guide rail strip is matched with a guide rail groove, the guide rail groove is opened on the side surface of a compression-shear tool, the side surface of the compression-shear tool is connected with a second sensor, the second sensor is connected with the third electric cylinder, a placing groove is opened on each of the fixed block and the compression-shear tool, the placing groove is matched with a mandrel, the mandrel is placed in the cabinet, and a pressure disc is also placed in the cabinet.
[0006] Further, a rotating frame is arranged on the mounting frame, a locking bolt is arranged at one end of the rotating frame, the end of the locking bolt is in contact with the surface of the mounting frame, a rotating plate is arranged at the other end of the rotating frame, and two groups of high-speed cameras are arranged on the rotating plate.
[0007] Further, the fixing frame is provided with a rotatable heating plate, and a friction sleeve is arranged between the rotating shaft of the heating plate and the fixing frame.
[0008] Further, the connector and the fixing block are both provided with a connecting groove, the connector and the fixing block are both provided with a locking pin and a compression spring, the compression spring is sleeved on the locking pin, the locking pin is arranged in the connecting block after penetrating out of the connecting groove, the connecting block is matched with the connecting groove, the connecting block is arranged on the connecting seat, and the connecting block is also arranged on the pressure plate.
[0009] Further, the cabinet is provided with a storage compartment, and the storage compartment is provided with a storage rack, and the storage rack is respectively provided with a mandrel and a pressure plate.
[0010] The principle and beneficial effects of the technical scheme are as follows:
[0011] The present application provides a kind of paste energetic semi-solid slurry tensile shear testing machine, through two groups of stretching tooling placing paste energetic semi-solid slurry sample, by insert block can avoid sample outflow, simultaneously play the role of guaranteeing the effective size of tensile sample, by No. 1 electric cylinder drives connector to move upwards, to drive the upper tensile tooling to move upwards, to the sample for tensile test, by No. 1 sensor to the force and displacement distance of tensile real-time acquisition, and record and save, complete tensile experiment;Remove tensile tooling, install pressure plate to connector, by No. 2 electric cylinder drives moving frame to move on mounting bracket, to adjust the distance between pressure shear tooling and fixing block, adjust to fixed shear height, sample is loaded into the placement slot in fixing block and pressure shear tooling, then mandrel is inserted into placement slot, by No. 1 electric cylinder drives pressure plate extruding mandrel, to provide a stable pressure for sample, then by No. 3 electric cylinder pushes pressure shear tooling, realizes the shear of sample, by No. 2 sensor real-time acquisition shear force and displacement distance, so that the device can provide a variety of test force, so that the test stress of sample is quantitatively controllable, and the characteristics of material can be more truly reflected by combining each test result. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a structure diagram of the present application for paste energetic semi-solid slurry tensile shear testing machine;
[0013] Figure 2 It is a sectional view of the present application for paste energetic semi-solid slurry tensile shear testing machine;
[0014] Figure 3 It is Figure 2 It is an enlarged view of position A in FIG. 4;
[0015] Figure 4 It is Figure 2 It is an enlarged view of position B in FIG. 4;
[0016] Figure 5It is a sectional view of a fixed block and a compression-shearing tool for a paste-like energetic semi-solid slurry tensile-compression-shearing testing machine according to the present application;
[0017] Figure 6 It is a compression-shearing mode schematic diagram of a paste-like energetic semi-solid slurry tensile-compression-shearing testing machine according to the present application;
[0018] The names of corresponding marks in the drawings are as follows: 1, cabinet body; 2, mounting frame; 3, fixed frame; 4, moving frame; 5, No. 1 electric cylinder; 6, No. 1 sensor; 7, fixed block; 8, heating plate; 9, locking bolt; 10, rotating frame; 11, storage rack; 12, mandrel; 13, compression disc; 14, storage bin; 15, rotating plate; 16, No. 2 electric cylinder; 17, No. 3 electric cylinder; 18, compression spring; 19, connecting block; 20, connecting seat; 21, tensile tool; 22, plug-in block; 23, connecting groove; 24, connector; 25, locking pin; 26, guide rail strip; 27, guide rail groove; 28, compression-shearing tool; 29, placement groove; 30, No. 2 sensor; 31, high-speed camera. DETAILED DESCRIPTION
[0019] The present application will be further described in detail below in combination with the drawings and embodiments:
[0020] As Figures 1-6As shown, a tensile shear test machine for paste energetic semi-solid slurry includes a cabinet 1, the cabinet 1 is provided with a mounting frame 2 and a first electric cylinder 5, the mounting frame 2 is respectively provided with a fixed frame 3 and a moving frame 4, the fixed frame 3 is provided with a fixed block 7, and two groups of stretching toolings 21 are oppositely arranged between the fixed block 7 and the telescopic rod of the first electric cylinder 5, an insertion block 22 is arranged between the two groups of stretching toolings 21, and the two groups of stretching toolings 21 and the insertion block 22 together form an hourglass shape, which can better place the paste energetic semi-solid slurry sample and uniformly stretch it, and the insertion block 22 can prevent the sample from flowing out and ensure that the sample between the two groups of stretching toolings 21 being stretched is a square, thereby ensuring the effectiveness of the stretching size and making the stretching test result more accurate; the two groups of stretching toolings 21 are respectively provided with connecting seats 20, one group of connecting seats 20 is connected with a connector 24, the connector 24 is connected with a first sensor 6, the first sensor 6 is connected with the first electric cylinder 5, and the other group of connecting seats 20 is connected with the fixed block 7; a second electric cylinder 16 is arranged in the cabinet 1, the top end of the second electric cylinder 16 is connected with the bottom surface of the moving frame 4, and the telescopic end of the second electric cylinder 16 can drive the moving frame 4 to move, so as to adjust the distance between the pressure-shear tooling 28 and the fixed block 7 and ensure the height of the test shear band; a third electric cylinder 17 and a guide rail strip 26 are arranged on the moving frame 4, the guide rail strip 26 is matched with a guide rail groove 27, the guide rail groove 27 is opened in the side surface of the pressure-shear tooling 28, the side surface of the pressure-shear tooling 28 is connected with a second sensor 30, the second sensor 30 is connected with the third electric cylinder 17, and the fixed block 7 and the pressure-shear tooling 28 are respectively provided with a placing groove 29, the placing groove 29 on the fixed block 7 penetrates through the entire fixed block 7, the placing groove 29 on the pressure-shear tooling 28 does not penetrate through the pressure-shear tooling 28, the placing groove 29 is matched with a mandrel 12, the mandrel 12 is placed in the cabinet 1, and a pressure plate 13 is also placed in the cabinet 1; after the stretching tooling 21 is removed, the pressure plate 13 can be installed on the connector 24, and the connection mode between the two is the same, so that the device can quickly change modes and provide different forces for testing the sample.
[0021] In use, the paste energetic semi-solid slurry sample is filled into the stretching tooling 21, and the stretching tooling 21 is fixed between the fixed block 7 and the connector 24 through the connecting seat 20, the lower stretching tooling 21 is fixed on the fixed block 7 through the connecting seat 20 and cannot move, and the upper stretching tooling 21 is connected with the connector 24 through the connecting seat 20 and can move with the connector 24, the first electric cylinder 5 is started to drive the connector 24 to move upward through the telescopic end, thereby dragging the upper stretching tooling 21 to move upward and stretching the sample, until the sample is damaged, and the tensile test is performed at the same time, the tensile force and displacement data are collected in real time and synchronously through the first sensor 6, and are recorded and saved.
[0022] After the tensile test is completed, the tensile tool 21 and the connecting seat 20 are removed from between the connector 24 and the fixed block 7, the pressure plate 13 is installed on the connector 24, and then the second electric cylinder 16 is started to drive the moving frame 4 to move on the mounting frame 2, so as to change the gap distance between the pressure-shear tool 28 and the fixed block 7, and the adjustment accuracy can reach 1 um. Then the paste-like energetic semi-solid slurry sample is filled into the placement groove 29 on the fixed block 7, and the mandrel 12 is inserted into the placement groove 29 on the fixed block 7 and contacts the top surface of the sample. Then the first electric cylinder 5 is started to drive the pressure plate 13 to move downward to press the mandrel 12, so as to provide a certain pressure for the sample through the mandrel 12. Then the third electric cylinder 17 is started to drive the pressure-shear tool 28 to move on the guide rail strip 26, and the pressure-shear tool 28 always keeps parallel with the fixed block 7. After the pressure-shear tool 28 moves, it is out of position with the fixed block 7, so as to shear the sample. The second sensor 30 synchronously collects the thrust and displacement data in the shearing process in real time, so as to complete the pressure-shear test of the sample.
[0023] And the empty car test is carried out before and after the test, the moving die data is measured, and the average value is taken as the friction in the test process. The data collected by the force sensor in the test process is the total tensile force value borne by the moving die, and the actual tensile force value borne by the sample is obtained by subtracting the friction from the total tensile force value. Compared with the traditional testing machine, the testing machine is more suitable for paste-like energetic semi-solid slurry, can provide different test forces, and can more truly reflect the rheological properties under complex stress state.
[0024] In the embodiment, the rotating frame 10 is arranged on the mounting frame 2, the locking bolt 9 is arranged at one end of the rotating frame 10, the locking bolt 9 contacts the surface of the mounting frame 2 at the other end, and the rotating plate 15 is arranged at the other end of the rotating frame 10. Two high-speed cameras 31 are arranged on the rotating plate 15. The DIC image acquisition system is adopted to acquire the speckle point images of each deformation stage of the material in real time through the two high-speed cameras 31, the displacement field data is smoothed, the strain information of the sample in different directions is calculated, the volume change of the sample under the action of extrusion and shearing is obtained, the rotating frame 10 can rotate and move on the mounting frame 2, and the rotating frame 10 can be locked and unlocked by adjusting the locking bolt 9. The positions of the rotating frame 10 and the rotating plate 15 are adjusted, the two high-speed cameras 31 are aligned with the sample in the tensile test or the pressure-shear test, and the information is conveniently acquired.
[0025] In the embodiment, the heating plate 8 is arranged on the fixed frame 3 and can rotate, and a friction sleeve is arranged between the rotating shaft of the heating plate 8 and the fixed frame 3. The heating plate 8 can be heated on both sides, and the heating plate 8 can be aligned with the tensile tool 21 or the pressure-shear tool 28 by rotating the heating plate 8, and the heating plate 8 is self-fixed through the friction sleeve, so that the heating plate 8 can adapt to different test modes. The sample can be heated through the heating plate 8, so that the device can measure the rheological mechanical properties of the material at different temperatures.
[0026] In the embodiment, the connector 24 and the fixing block 7 are both provided with a connecting groove 23, the connector 24 and the fixing block 7 are both provided with a locking pin 25 and a compression spring 18, the compression spring 18 is sleeved on the locking pin 25, the locking pin 25 is provided in the connecting block 19 after penetrating out of the connecting groove 23, the connecting block 19 is matched with the connecting groove 23, the connecting block 19 is arranged on the connecting seat 20, and the connecting block 19 is also arranged on the pressure plate 13. By inserting the connecting block 19 into the connecting groove 23, the connecting seat 20, the connector 24 and the fixing block 7 can be quickly connected, after being connected in place, under the action of the compression spring 18, the locking pin 25 is inserted into the blind hole on the connecting block 19, so as to limit the position of the connecting block 19, avoid it from sliding out of the connecting groove 23, and fix it; when disassembling, only need to move the locking pin 25, so that it exits the connecting block 19, realize the quick disassembly of the device module, so as to switch the test mode.
[0027] In the embodiment, the cabinet 1 is provided with a storage bin 14, the storage bin 14 is provided with a storage rack 11, and the storage rack 11 is respectively placed with a mandrel 12 and a pressure plate 13. The storage bin 14 can store the replacement module of the device, when switching the test mode, only need to open the storage bin 14 to take the corresponding parts.
[0028] The above is only an embodiment of the present application, and the specific technical solutions or characteristics of the scheme are not described in detail. It should be noted that for those skilled in the art, without departing from the technical scheme of the present application, some deformations and improvements can be made, which should also be regarded as the protection scope of the present application, which will not affect the effect and practicality of the patent. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.
Claims
1. A tensile, compressive and shear testing machine for paste-like energetic semi-solid slurry, characterized by: The invention comprises a cabinet (1), wherein a mounting frame (2) and a No. 1 electric cylinder (5) are provided on the cabinet (1), a fixed frame (3) and a movable frame (4) are respectively provided on the mounting frame (2), a fixed block (7) is provided on the fixed frame (3), two groups of stretching tooling (21) are relatively provided between the fixed block (7) and the telescopic rod of the No. 1 electric cylinder (5), an inserting block (22) is provided between the two groups of the stretching tooling (21), and a connecting seat (20) is provided on both groups of the stretching tooling (21), wherein one group of the connecting seats (20) is connected to a connector (24), the connector (24) is connected to a No. 1 sensor (6), the No. 1 sensor (6) is connected to the No. 1 electric cylinder (5), and the other group of the connecting seats (20) is connected to the fixed block (7); A No. 2 electric cylinder (16) is provided in the cabinet (1), the top of the No. 2 electric cylinder (16) is connected to the bottom of the movable frame (4), and a No. 3 electric cylinder (17) and a guide rail (26) are respectively provided on the movable frame (4), the guide rail (26) matches with the guide rail groove (27), the guide rail groove (27) is provided on the side of the pressing and shearing tool (28), the side of the pressing and shearing tool (28) is connected to the No. 2 sensor (30), and the No. 2 sensor (30) is connected to the No. 3 electric cylinder (17), the fixed block (7) and the pressing and shearing tool (28) are both provided with a placement groove (29), the placement groove (29) is adapted to the core shaft (12), the core shaft (12) is placed in the cabinet (1), and a pressure plate (13) is also placed in the cabinet (1).
2. The tensile, compressive and shear testing machine for paste-like energetic semi-solid slurry according to claim 1, characterized in that: A rotating frame (10) is provided on the mounting frame (2), a locking bolt (9) is passed through one end of the rotating frame (10), the end of the locking bolt (9) contacts the surface of the mounting frame (2), and a rotating plate (15) is provided at the other end of the rotating frame (10), and two groups of high-speed cameras (31) are provided on the rotating plate (15).
3. The tensile, compressive and shear testing machine for paste-like energetic semi-solid slurry according to claim 1, characterized in that: A rotatable heating plate (8) is provided on the fixing frame (3), and a friction sleeve is provided between the rotating shaft of the heating plate (8) and the fixing frame (3).
4. The tensile, compressive and shear testing machine for pasty energetic semi-solid slurry according to claim 1, characterized in that: The connector (24) and the fixed block (7) are both provided with a connecting groove (23), and a locking pin (25) and a compression spring (18) are both provided in the connector (24) and the fixed block (7). The compression spring (18) is sleeved on the locking pin (25), and the end of the locking pin (25) passes through the connecting groove (23) and is then provided in the connecting block (19). The connecting block (19) is matched with the connecting groove (23), and the connecting block (19) is provided on the connecting seat (20). The connecting block (19) is also provided on the pressure plate (13).
5. The tensile, compressive and shear testing machine for paste-like energetic semi-solid slurry according to claim 1, characterized in that: A storage bin (14) is provided in the cabinet (1), a storage rack (11) is provided in the storage bin (14), and the core shaft (12) and the pressure plate (13) are respectively placed on the storage rack (11).