A two-moving-body high-speed collision experimental device and method based on electromagnetic drive

Abstract

The invention discloses a two-moving-body high-speed collision experiment device based on electromagnetic drive in the technical field of moving-body collision experiment, comprising two electromagnetic drive systems arranged opposite to each other, wherein a collision area is formed between the emission ends of the two electromagnetic drive systems; the two electromagnetic drive systems are used to respectively drive a moving body to move toward the collision area at the same or different preset speeds; when the preset speeds of the two moving bodies are different, the electromagnetic drive system controls the time of the moving body emission so that the two moving bodies can collide in the collision area; a data acquisition module is arranged on the side of the collision area, and the acquisition end of the data acquisition module faces the collision area so as to obtain data when the two moving bodies collide.

Description

Technical Field

[0001] The present invention relates to the technical field of dynamic body collision experiments, and in particular to a two-dynamic body high-speed collision experiment device and method based on electromagnetic drive. Background Art

[0002] The phenomenon of high-speed collision between two moving objects is very common in national defense and daily life, such as armed strikes, missile interception, planetary defense, traffic accidents, etc.

[0003] The destructive mechanical behavior of two moving bodies during a high-speed collision is directly related to the effectiveness of armed strikes, the success of missile interception, whether it is possible to effectively prevent planetary impacts on the earth, and personal casualties in traffic accidents.

[0004] Studying the damage and destructive behavior of two moving bodies during a high-speed collision will help guide the upgrading of weapons and equipment, the design of transportation vehicles, the formulation of planetary defense plans, etc., and ensure national defense security, personal safety and earth safety.

[0005] Regarding the research on the damage and destructive behavior of two moving bodies in high-speed collision, the current main research method used is one moving body colliding with another stationary object at high speed, such as: flying fragments high-speed impact with stationary target plate experiment, projectile penetration experiment, etc.

[0006] Since an object is at rest, its initial momentum and kinetic energy are both zero. Therefore, this experimental method of a moving body colliding with a static body cannot take into account the influence of the initial momentum and kinetic energy of the static object on the mechanical behavior of a high-speed collision.

[0007] Therefore, this experimental method of high-speed dynamic body impacting a static body cannot effectively analyze the damage and destructive behavior of two moving bodies in a high-speed collision, and this type of experimental technology of high-speed dynamic body impacting a static body cannot be directly applied to the study of the mechanical behavior of two moving bodies in a high-speed collision. Summary of the invention

[0008] The purpose of the present invention is to provide an electromagnetically driven two-moving-body high-speed collision experimental device and method, so as to solve the technical problem that the experimental means of the existing technology for the high-speed collision of a moving body with a static body cannot effectively analyze the damage and destructive behavior of the high-speed collision of two moving bodies, and the experimental technology of the high-speed collision of a moving body with a static body cannot be directly applied to the study of the mechanical behavior of the high-speed collision of two moving bodies.

[0009] In order to solve the above technical problems, the present invention specifically provides a two-moving-body high-speed collision experimental device based on electromagnetic drive, comprising two electromagnetic drive systems arranged opposite to each other, and a collision area is formed between the exit ends of the two electromagnetic drive systems;

[0010] Two electromagnetic drive systems are used to drive a moving body to move toward the collision area at the same or different preset speeds respectively;

[0011] When the preset speeds of the two moving bodies are different, the electromagnetic drive system controls the time of the moving body launch so that the two moving bodies can collide in the collision area;

[0012] A data acquisition module is arranged on the side of the collision area, and the acquisition end of the data acquisition module faces the collision area to obtain data when two moving bodies collide.

[0013] As a preferred solution of the present invention, two electromagnetic drive systems are arranged opposite to each other to collect data of a frontal collision of two moving bodies; or,

[0014] The two electromagnetic drive systems are arranged obliquely opposite to each other to collect data of oblique collision between two moving bodies.

[0015] As a preferred solution of the present invention, the two electromagnetic drive systems are connected to the synchronous controller through wires, and field effect transistors are provided on the wires to control the start-up time of the two electromagnetic drive systems so that two moving bodies with the same or different speeds collide in the collision area.

[0016] As a preferred solution of the present invention, the synchronous controller is also connected to the data acquisition module through a wire to accurately control the start-up time of the data acquisition module and collect valid data.

[0017] As a preferred solution of the present invention, the data acquisition module includes a light source, a camera lens and a camera control system for controlling the camera lens, and the camera control system is connected to the synchronous controller through a wire;

[0018] The light source is used to illuminate the surfaces of the two moving objects so that the reflected light enters the camera lens to form an image;

[0019] The camera lens is used to take pictures of the movement and collision of two moving objects in the collision area.

[0020] As a preferred solution of the present invention, a protective plate is respectively provided at the output ends of the two electromagnetic drive systems, and a hole is provided in the middle of the protective plate for the moving body to pass through.

[0021] As a preferred solution of the present invention, mounting blocks with through holes are fixedly provided on both sides of the protective plate, vertical hole grooves are provided on both sides of the support frame, and the mounting blocks are fixed to the hole grooves by bolts and nuts to achieve fixation and height adjustment of the protective plate.

[0022] As a preferred solution of the present invention, the electromagnetic drive system includes a gun barrel, a coil wound outside the gun barrel, and a capacitor electrically connected to the coil;

[0023] The coil is energized to generate magnetic force to launch the moving object placed in the barrel.

[0024] As a preferred solution of the present invention, the gun barrel is mounted on a bracket, and the bracket can adjust the height of the gun barrel so that the moving body can pass through the protective plate.

[0025] In order to solve the above technical problems, the present invention further provides a two-moving-body high-speed collision test method based on electromagnetic drive, using the above two-moving-body high-speed collision test device based on electromagnetic drive, comprising the following steps:

[0026] Adjust the relative positions of the two electromagnetic drive systems so that the two barrels overlap axially, which is used to conduct a forward collision experiment between two moving bodies;

[0027] Or, the two gun barrels are made to intersect axially, with the intersection point located between the two collision areas, for conducting an oblique collision experiment between two moving bodies;

[0028] Adjust the collision area to ensure that the two moving bodies can pass through the hole in the middle of the protective plate after being launched from the barrel;

[0029] Weigh the two moving bodies and collect them for later use;

[0030] A moving body is separately placed into the end of the left barrel, and the capacitor charging voltage is adjusted to charge the capacitor so that the moving body on the left can be fired at a predetermined speed;

[0031] The synchronous controller is adjusted to start the electromagnetic drive system on the left synchronously with the data acquisition module. The data acquisition module records the entire process of the movement of the left moving body in the collision area, and the time T from the start of the electromagnetic drive system to the movement of the left moving body to the center of the collision area is obtained based on the captured image. 左 ;

[0032] Separately placing another moving body sample into the end of the right gun barrel, adjusting the charging voltage, and charging the capacitor so that the moving body on the right can be fired at a predetermined speed;

[0033] The synchronous controller is adjusted to start the electromagnetic drive system on the right side synchronously with the data acquisition module. The data acquisition module records the entire process of the movement of the moving body on the right side in the collision area, and the time T from the start of the electromagnetic drive system to the movement of the moving body on the right side to the center of the collision area is obtained based on the captured image. 右 ;

[0034] Put the left moving body and the right moving body into the ends of the left barrel and the right barrel respectively again to recharge the capacitor;

[0035] If T 左 Less than T 右， Then adjust the synchronous controller so that the electromagnetic drive system on the right and the data acquisition module start at the same time, and the electromagnetic drive system on the left starts with a delay of T. 左 With T右 time difference;

[0036] On the contrary, the electromagnetic drive system on the left and the data acquisition module are started at the same time, and the electromagnetic drive system on the right is started with a delay of T. 左 With T 右 time difference;

[0037] After the synchronous control adjustment is completed, the synchronous controller is started to complete the collision experiment of the two moving bodies and record the collision process;

[0038] Two dynamic body experimental samples were collected after the collision for subsequent microstructure characterization and damage detection analysis.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] By launching a moving body together through two electromagnetic drive systems arranged opposite to each other, a high-speed collision test between two moving bodies can be carried out, and the damage and destructive behavior of the two moving bodies during a high-speed collision can be accurately analyzed. This type of test technology for a moving body to collide with a static body at a high speed can be applied to the study of the mechanical behavior of a high-speed collision between two moving bodies.

[0041] The start-up time of the two electromagnetic drive systems is adjustable. Regardless of whether the preset speeds between the two moving bodies are the same or different, the collision of the two moving bodies can be caused to occur within the collision area by controlling the start-up time of the electromagnetic drive system. In addition to obtaining rich experimental data, the collision position of the two moving bodies can also be accurately controlled to facilitate the data acquisition module to collect information on the collision of the moving bodies, and then analyze the mechanical behavior of the collision between the two moving bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0043] Figure 1 It is a structural schematic diagram of an experimental device in an embodiment of the present invention;

[0044] Figure 2 is a graph showing the relationship between the voltage of capacitor 9 and the collision relative velocity in an embodiment of the present invention;

[0045] Figure 3 Schematic diagram of the time intervals of three pulse voltage signals of the synchronous controller in an embodiment of the present invention;

[0046] Figure 4This is a schematic diagram of a steel ball with a diameter of 8 mm just exiting the left gun barrel 7 in an embodiment of the present invention;

[0047] Figure 5 This is a schematic diagram of a steel ball with a diameter of 6 mm just exiting the right gun barrel 7 in an embodiment of the present invention;

[0048] Figure 6 Schematic diagram of two moving steel balls before high-speed collision in an embodiment of the present invention;

[0049] Figure 7 Schematic diagram of two moving steel balls after high-speed collision in an embodiment of the present invention;

[0050] Figure 8 It is a schematic diagram of two moving steel balls separating from each other after high-speed collision in an embodiment of the present invention.

[0051] The numbers in the figure represent the following:

[0052] 1-electromagnetic drive system, 2-collision area, 3-data acquisition module, 4-synchronous controller, 5-wire, 6-field effect transistor, 7-barrel, 8-coil, 9-capacitor, 10-bracket, 11-protective plate, 12-mounting block, 13-hole groove, 14-bolt and nut, 15-light source, 16-camera lens, 17-camera control system, 18-support frame. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] The present invention specifically provides a two-moving-body high-speed collision experimental device based on electromagnetic drive, comprising two electromagnetic drive systems 1 arranged opposite to each other, and a collision area 2 is formed between the exit ends of the two electromagnetic drive systems 1;

[0055] The two electromagnetic drive systems 1 are used to respectively drive a moving body to move toward the collision area 2 at the same or different preset speeds;

[0056] When the preset speeds of the two moving bodies are different, the electromagnetic drive system 1 controls the time of the moving body launch so that the two moving bodies can collide in the collision area 2;

[0057] A data acquisition module 3 is disposed on the side of the collision area 2, and a collection end of the data acquisition module 3 faces the collision area 2 to obtain data when two moving bodies collide.

[0058] The meaning of the above-mentioned control of the launch time of the moving body is: since the speeds of the two moving bodies may be different, in order to accurately make the collision of the two moving bodies occur within the collision area 2, it is necessary to adjust the launch time of the moving bodies according to the preset speeds of the two moving bodies, that is, the moving body with a faster preset speed should be launched later, so that the two moving bodies with different speeds arrive at the collision area 2 at the same time.

[0059] By launching a moving body together through two electromagnetic drive systems 1 arranged relatively to each other, a high-speed collision test between two moving bodies can be carried out, and the damage and destructive behavior of the high-speed collision between the two moving bodies can be accurately analyzed. This type of test technology for the high-speed collision of a moving body against a static body can be applied to the study of the mechanical behavior of a high-speed collision between two moving bodies.

[0060] The start-up time of the two electromagnetic drive systems 1 is adjustable. Regardless of whether the preset speeds between the two moving bodies are the same or different, the collision of the two moving bodies can be caused to occur within the collision area 2 by controlling the start-up time of the electromagnetic drive system 1. On the basis of obtaining rich experimental data, the collision position of the two moving bodies can also be accurately controlled, so that the data acquisition module can collect information on the collision of the moving bodies, and then analyze the mechanical behavior of the collision between the two moving bodies.

[0061] The electromagnetic drive system 1 is used in the present invention because the electromagnetic drive system 1 uses electromagnetic force as a driving force, which can accurately control the movement speed of the moving body and avoid small fluctuations in the speed.

[0062] At the same time, the electromagnetic drive system 1 has no time delay when launching the moving body, and can more accurately control the collision position of the two moving bodies, especially when it cooperates with the synchronous controller 4 described below, the effect of controlling the collision position is particularly prominent.

[0063] Further, the two electromagnetic drive systems 1 are arranged opposite to each other, so that the two moving bodies collide head-on in the collision area 2 to collect data of the head-on collision of the two moving bodies; or,

[0064] The two electromagnetic drive systems 1 are arranged obliquely opposite to each other, so that the two moving bodies collide obliquely in the collision area 2, so as to collect data of the oblique collision of the two moving bodies.

[0065] By adjusting the angle between the two electromagnetic drive systems 1, the angle between the two moving bodies when they collide is changed to obtain a rich experimental database.

[0066] Furthermore, there are multiple ways to control the start time of the electromagnetic drive system 1, such as manual control.

[0067] In order to improve the experimental accuracy, the present invention adopts the following method:

[0068] The two electromagnetic drive systems 1 are connected to the synchronous controller 4 via a wire 5 , and a field effect transistor 6 is provided on the wire 5 to control the start time of the two electromagnetic drive systems 1 so that two moving bodies with the same or different speeds collide in the collision area 2 .

[0069] That is, based on the preset speed of moving body 1, the time it takes for moving body 1 to reach collision area 2 is calculated, and then based on the preset speed of moving body 2, the time it takes for moving body 2 to reach collision area 2 is calculated. The time difference between the two moving bodies arriving at the collision area is the delay time of the electromagnetic drive system 1 that is started later.

[0070] Furthermore, since the data acquisition module 3 needs to collect the movement and collision information of the two moving bodies in the collision area 2, the data acquisition module 3 only needs to be turned on when the moving bodies reach the collision area.

[0071] On the one hand, it can avoid collecting invalid data and reduce the workload of data screening; on the other hand, it can save resources and reduce energy consumption and equipment loss.

[0072] To achieve the above purpose, the present invention connects the electromagnetic drive system 1 with the synchronous controller 4, and further connects the synchronous controller 4 with the data acquisition module 3 through the wire 5 to accurately control the start time of the data acquisition module 3 and collect valid data.

[0073] The specific principle of the synchronous controller 4 controlling the electromagnetic drive system 1 and the data acquisition module 3 is:

[0074] Three pulse voltage signals are set on the synchronous controller 4. By setting the time intervals between the three pulse voltage signals, the start-up time of the electromagnetic drive system 1 and the data acquisition module 3 can be accurately controlled, that is, the start-up interval time is adjusted.

[0075] Furthermore, the data acquisition module 3 in the present invention is constructed as follows:

[0076] The data acquisition module 3 includes a light source 15, a camera lens 16, and a camera control system 17 for controlling the camera lens 16. The camera control system 17 is connected to the synchronous controller 4 via a wire 5;

[0077] The light source 15 is used to illuminate the surfaces of the two moving objects so that the reflected light enters the camera lens 16 to form an image;

[0078] The camera lens is used to take pictures of the movement and collision of two moving objects in the collision area.

[0079] Furthermore, in order to better control the speed, angle and other parameters of the moving body during collision, that is, to reduce the deviation between the various parameters of the moving body during collision and the preset data, the location of the moving body collision should be set as close as possible to the exit end of the electromagnetic drive system 1, that is, the collision area 2 should be as narrow as possible.

[0080] On this basis, the moving body may fall after the collision and splash onto the electromagnetic drive system 1 , causing damage to the electromagnetic drive system 1 .

[0081] To solve the above problems, the present invention takes the following measures:

[0082] A protective plate 11 is respectively arranged at the exit ends of the two electromagnetic drive systems 1 , and a hole is arranged in the middle of the protective plate 11 for the moving body to pass through.

[0083] The protection plate 11 blocks the collision point between the two moving bodies and the electromagnetic drive system 1 , and can separate the collision from the electromagnetic drive system 1 , thereby preventing the moving bodies from hitting the electromagnetic drive system 1 after the collision.

[0084] Furthermore, mounting blocks 12 with through holes are fixedly provided on both sides of the protective plate 11, and vertical holes 13 are provided on both sides of the support frame 18. The mounting blocks 12 are fixed to the holes 13 by bolts and nuts 14 to achieve the fixation and height adjustment of the protective plate 11.

[0085] The height of the protective plate 11 is adjusted so that the hole in the middle of the protective plate 11 is aligned with the gun barrel 7 .

[0086] The structure of the electromagnetic drive system 1 in the present invention is as follows:

[0087] The gun barrel 7 includes a coil 8 wound around the gun barrel 7 and a capacitor 9 electrically connected to the coil 8 , wherein the capacitor 9 provides power to the coil 8 .

[0088] The coil 8 is energized to generate magnetic force, which pushes the moving body in the barrel 7 to be launched.

[0089] It can be understood that a plurality of coils 8 are disposed on the outer shell of each gun barrel 7 , each coil 8 is configured with a capacitor 9 for power supply, and a plurality of capacitors 9 in the same electromagnetic power system are connected in series via a conductor 5 .

[0090] The launching speed of the moving body can be adjusted by adjusting the voltage of the capacitor 9 , or by changing the number of capacitors 9 and the number of coils 8 .

[0091] The speed at which the moving body is ejected from the exit end of the barrel 7 is positively correlated with the voltage of the capacitor 9 .

[0092] Furthermore, the gun barrel 7 is mounted on a bracket 10, and the bracket 10 can adjust the height of the gun barrel 7 so that the moving body can pass through the collision area 2. The bracket 10 can be complementary to the height adjustment device of the protective plate 11.

[0093] In order to solve the above technical problems, the present invention further provides a two-moving-body high-speed collision test method based on electromagnetic drive, using the above two-moving-body high-speed collision test device based on electromagnetic drive, comprising the following steps:

[0094] The relative positions of the two electromagnetic drive systems 1 are adjusted so that the two gun barrels 7 are axially overlapped, so as to conduct a forward collision experiment between two moving bodies;

[0095] Or, the two gun barrels 7 are made to intersect axially, with the intersection point being located within the collision region 2, for conducting an oblique collision experiment between two moving bodies;

[0096] Adjust the position of the protective plate 11 to ensure that the two moving bodies can pass through the hole in the middle of the protective plate 11 after being launched from the barrel 7;

[0097] Weigh the two moving bodies and collect them for later use;

[0098] A moving body is placed separately into the end of the left gun barrel 7, and the charging voltage of the capacitor 9 is adjusted to charge the capacitor 9 so that the moving body on the left can be fired at a predetermined speed;

[0099] The synchronous controller 4 is adjusted to start the electromagnetic drive system 1 on the left synchronously with the data acquisition module 3. The data acquisition module 3 records the entire process of the movement of the moving body on the left in the collision area 2, and the time T from the start of the electromagnetic drive system 1 to the movement of the moving body on the left to the center of the collision area 2 is obtained based on the captured image. 左 ;

[0100] Separately place another moving body sample into the end of the right gun barrel 7, adjust the charging voltage, and charge the capacitor 9 so that the moving body on the right can be fired at a predetermined speed;

[0101] The synchronous controller 4 is adjusted to start the electromagnetic drive system 1 on the right synchronously with the data acquisition module 3. The data acquisition module 3 records the entire process of the movement of the moving body on the right in the collision area 2, and the time T from the start of the electromagnetic drive system 1 to the movement of the moving body on the right to the center of the collision area 2 is obtained based on the captured image. 右 ;

[0102] The left moving body and the right moving body are placed into the ends of the left gun barrel 7 and the right gun barrel 7 respectively again to recharge the capacitor 9;

[0103] If T 左 Less than T 右，Then adjust the synchronous controller 4 to start the electromagnetic drive system 1 and the data acquisition module 3 on the right at the same time, and delay the start of the electromagnetic drive system 1 on the left by T. 左 With T 右 time difference;

[0104] On the contrary, the electromagnetic drive system 1 on the left and the data acquisition module 3 are started simultaneously, and the electromagnetic drive system 1 on the right is started with a delay, and the delay time is T 左 With T 右 time difference;

[0105] After the synchronous control adjustment is completed, the synchronous control device 4 is started to complete the collision experiment of the two moving bodies, and the collision process is recorded by filming;

[0106] Two dynamic body experimental samples were collected after the collision for subsequent microstructure characterization and damage detection analysis.

[0107] The following is a specific implementation example for further explanation of the test method.

[0108] Steel balls with diameters of 6 mm and 8 mm were placed on an electronic scale and their masses were found to be 0.89 g and 2.12 g respectively. The two steel ball samples after bearing the weight were collected for subsequent tests.

[0109] in accordance with Figure 2 According to the relationship between the voltage and the collision relative velocity, the charging voltage of the left capacitor 9 is selected to be 241V, and the charging voltage of the right capacitor 9 is selected to be 137V. The capacitors 9 on the left and right sides are charged with voltage according to the above voltages, and a steel ball with a diameter of 8mm is placed separately at the end of the right electromagnetic driven barrel 7.

[0110] The synchronous controller 4 is adjusted to synchronize the triggering of the right electromagnetic drive system 1 and the data acquisition module 3. The data acquisition module 3 records the entire process of the movement of the 8 mm steel ball in the collision area 2. Based on the captured image, the time from triggering to the movement of the 8 mm steel ball to the center of the collision area 2 is obtained to be 21.6 ms.

[0111] The left capacitor 9 is charged with a high voltage of 241V again, and the right capacitor 9 is charged with a voltage of 137V, and a steel ball with a diameter of 6mm is placed separately into the end of the left electromagnetic driven gun barrel 7.

[0112] The synchronous controller 4 is adjusted to synchronize the triggering of the left electromagnetic drive system 1 and the data acquisition module 3. The data acquisition module 3 records the entire process of the movement of the 6 mm steel ball in the collision area 2. Based on the captured image, the time from triggering to the movement of the 6 mm steel ball to the center of the collision area 2 is 11.1 ms.

[0113] The left capacitor 9 is charged with a high voltage of 241V again, and the right capacitor 9 is charged with a voltage of 137V, and a steel ball with a diameter of 6mm and a steel ball with a diameter of 8mm are placed in the ends of the left and right electromagnetic driven gun barrels 7 respectively.

[0114] The synchronous controller 4 is adjusted to synchronize the triggering of the right electromagnetic drive system 1 and the data acquisition module 3. The triggering of the left electromagnetic drive system 1 is delayed by about 10.5ms. The high-speed collision experiment of the two steel balls is completed, and the collision process is recorded. The high-speed collision process of the two steel balls is shown in FIG. Figure 4-8 shown.

[0115] Finally, the experimental samples after the high-speed collision between two moving steel balls were collected for subsequent microstructure characterization and damage detection analysis.

[0116] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A two-moving-body high-speed collision experimental device based on electromagnetic drive, characterized in that: It comprises two electromagnetic drive systems (1) arranged opposite to each other, wherein a collision area (2) is formed between the emission ends of the two electromagnetic drive systems (1); The two electromagnetic drive systems (1) are used to respectively drive a moving body to move towards the collision area (2) at the same or different preset speeds; When the preset speeds of the two moving bodies are different, the electromagnetic drive system (1) controls the time of launching the moving bodies so that the two moving bodies can collide in the collision area (2); A data acquisition module (3) is arranged on the side of the collision area (2), and a collection end of the data acquisition module (3) faces the collision area (2) to obtain data when two moving bodies collide; A protective plate (11) is respectively provided at the output ends of the two electromagnetic drive systems (1), and a hole is provided in the middle of the protective plate (11) for the moving body to pass through; Mounting blocks (12) with through holes are fixedly provided on both sides of the protective plate (11), and vertical hole grooves (13) are provided on both sides of the support frame (18), and the mounting blocks (12) are fixed to the hole grooves (13) by means of bolts and nuts (14) to achieve fixation and height adjustment of the protective plate (11); The electromagnetic drive system (1) comprises a gun barrel (7), a coil (8) wound around the outside of the gun barrel (7), and a capacitor (9) electrically connected to the coil (8); The coil (8) is energized to generate magnetic force to launch the moving body placed in the gun barrel (7).

2. The electromagnetically driven two-moving-body high-speed collision experimental device according to claim 1 is characterized in that: The two electromagnetic drive systems (1) are arranged opposite to each other to collect data of a head-on collision between two moving bodies; or, The two electromagnetic drive systems (1) are arranged obliquely opposite to each other to collect data of oblique collision between two moving bodies.

3. The electromagnetically driven two-moving-body high-speed collision experimental device according to claim 1 is characterized in that: The two electromagnetic drive systems (1) are connected to a synchronous controller (4) via a wire (5), and a field effect transistor (6) is provided on the wire (5) to control the start-up time of the two electromagnetic drive systems (1) so that two moving bodies with the same or different speeds collide in the collision area (2).

4. The electromagnetically driven two-moving-body high-speed collision experimental device according to claim 3 is characterized in that: The synchronous control instrument (4) is also connected to the data acquisition module (3) via a wire (5) to accurately control the start time of the data acquisition module (3) and collect valid data.

5. The electromagnetically driven two-moving-body high-speed collision experimental device according to claim 4 is characterized in that: The data acquisition module (3) comprises a light source (15), a camera lens (16), and a camera control system (17) for controlling the camera lens (16); the camera control system (17) is connected to the synchronization controller (4) via a wire (5); The light source (15) is used to illuminate the surfaces of the two moving objects so that the reflected light enters the camera lens (16) to form an image; The camera lens is used to take pictures of the movement and collision of two moving bodies in the collision area.

6. The electromagnetically driven two-moving-body high-speed collision experimental device according to claim 1, characterized in that: The gun barrel (7) is mounted on a bracket (10), and the bracket (10) is capable of adjusting the height of the gun barrel (7) so that the moving body can pass through the protective plate (11).

7. A two-body high-speed collision experimental method based on electromagnetic drive, characterized in that: The two-moving-body high-speed collision experimental device based on electromagnetic drive as described in any one of claims 1 to 6 comprises the following steps: The relative positions of the two electromagnetic drive systems (1) are adjusted so that the two gun barrels (7) are axially aligned, so as to conduct a forward collision experiment between two moving bodies; Alternatively, the two gun barrels (7) are made to intersect axially, with the intersection point being located within the collision region (2), for conducting an oblique collision experiment between two moving bodies; Adjust the position of the protective plate (11) to ensure that the two moving bodies can pass through the hole in the middle of the protective plate (11) after being launched from the gun barrel (7); Weigh the two moving bodies and collect them for later use; A moving body is separately placed into the end of the left gun barrel (7), and the charging voltage of the capacitor (9) is adjusted to charge the capacitor (9) so that the moving body on the left can be fired at a predetermined speed; The synchronous control device (4) is adjusted to start the electromagnetic drive system (1) on the left side synchronously with the data acquisition module (3), and the entire process of the movement of the moving body on the left side in the collision area (2) is recorded by the data acquisition module (3), and the time T from the start of the electromagnetic drive system (1) to the movement of the moving body on the left side to the center position of the collision area (2) is obtained based on the captured image. 左 ; Separately placing another moving body sample into the end of the right gun barrel (7), adjusting the charging voltage, and charging the capacitor (9) so that the moving body on the right can be fired at a predetermined speed; The synchronous control device (4) is adjusted to start the electromagnetic drive system (1) on the right side synchronously with the data acquisition module (3), and the entire process of the movement of the moving body on the right side in the collision area (2) is recorded by the data acquisition module (3), and the time T from the start of the electromagnetic drive system (1) to the movement of the moving body on the right side to the center position of the collision area (2) is obtained based on the captured image. 右 ; The left moving body and the right moving body are again placed into the ends of the left gun barrel (7) and the right gun barrel (7) respectively, and the capacitor (9) is recharged; If T 左 Less than T 右， The synchronous control device (4) is adjusted to start the electromagnetic drive system (1) and the data acquisition module (3) on the right at the same time, and the electromagnetic drive system (1) on the left is started with a delay, and the delay time is T 左 With T 右 time difference; On the contrary, the electromagnetic drive system (1) on the left and the data acquisition module (3) are started simultaneously, and the electromagnetic drive system (1) on the right is started with a delay, and the delay time is T 左 With T 右 time difference; After the synchronous control adjustment is completed, the synchronous control device (4) is started to complete the collision experiment of the two moving bodies, and the collision process is recorded by filming; Two dynamic body experimental samples were collected after the collision for subsequent microstructure characterization and damage detection analysis.

Images