CN115524239A - Cylindrical surface RM instability disturbance growth material strength measurement experiment system and method thereof - Google Patents

Abstract

The invention discloses a cylindrical surface RM instability strength measurement experiment system and a method thereof, belonging to the technical field of hydromechanics. A cylindrical RM instability-perturbed auxetic material strength measurement experimental system, comprising: experimental devices and measurement systems; the experimental device comprises a driving sleeve and a preset disturbance target, wherein the preset disturbance target is coaxially arranged in the driving sleeve. The invention provides a cylindrical RM instability strength measurement experiment system and a method thereof, which are used for precisely measuring parameters such as disturbance growth speed, amplitude, interface morphology and the like when a driving sleeve is exploded in a cylindrical surface and high-precision impact loads are carried out on a disturbance target and a filling medium in the disturbance target, and calculating to obtain the strength of a material by using fluid dynamics numerical simulation of different strength constitutive models or parameters and taking experiment measurement disturbance data as a convergence basis. The established cylindrical RM instability disturbance growth material strength measurement experiment system and the method thereof have important significance for material strength research under conditions of high pressure, high strain rate, large strain and the like.

Description

Cylindrical surface RM instability disturbance growth material strength measurement experiment system and method thereof

Technical Field

The invention relates to the technical field of hydromechanics, in particular to a cylindrical surface RM instability disturbance growth material strength measurement experiment system and a method thereof.

Background

The research on the dynamic strength of materials under extreme conditions is a fundamental problem of important attention in the subject fields of fusion physics, material science, impact dynamics and the like. Particularly in the researches on the problems of armor protection, metal jet, instability of inertial confinement fusion interface, celestial body jet and the like, the material is under complex stress, high strain loading pressure (several GPa-hundreds GPa, more than 1TPa under individual condition) and high strain rate (10 TPa) ⁵ /s-10 ⁷ S) and large deformation (100% and above), and provides urgent requirements for corresponding material dynamic strength data and strength measurement experimental technology. Moreover, the material strength is a physical quantity influenced by the coupling of a multi-scale effect and a multi-physical mechanism related to microstructure characteristics and loading states, is limited by a micro-macro cross-scale theory and a physical model, and is still a main means for acquiring strength properties and checking a theoretical model in the conventional material strength experimental study.

When the interface of different density materials is accelerated, the interface disturbance and instability caused by the light fluid pushing the heavy fluid are called Rayleigh-Taylor (RT) instability. The interfacial instability when the shock wave passes through two fluid interfaces of different densities is Richtmeyer-Meshkov (RM) instability. The instability disturbance growth method is an experimental method for obtaining material strength information by observing the development of disturbance under dynamic loading based on the inhibition characteristic of material strength to instability growth, and compared with other existing high-strain-rate range strength measurement methods, the disturbance growth method has the potential technical advantages of high loading pressure and wide strain range strength property research.

At present, an RT perturbation and growth method is successfully applied to strength measurement of materials with planar and cylindrical configurations, but the perturbation and growth method only using RT instability still has certain defects. RT instability researches light fluid and heavy fluid interfaces, and the RM instability problem of the interface disturbance of shock waves from the heavy fluid to the light fluid is not included in the technical principle. Therefore, the method establishes a cylindrical RM disturbance growth method strength measurement experiment system, supplements the existing strength measurement experiment technology, provides a new technical method for the research of the dynamic strength of the material with the large loading strain and the high strain rate range of the complex stress strain, has an important promotion effect on solving the bottleneck problems of few loading states and limited data range in the current strength research, and has an important significance on the material strength measurement under the extreme conditions of high pressure, high strain rate, large deformation and the like.

Disclosure of Invention

The invention aims to provide a cylindrical surface RM instability disturbance growth material strength measurement experiment system and a method thereof, which are used for establishing a cylindrical surface RM disturbance growth method for material strength measurement under extreme conditions, complement the existing strength measurement experiment technology, and load high pressure (several GPa-hundreds GPa, and even more than 1TPa under individual conditions) and high strain rate (10 TPa) for complex stress and strain ⁵ /s-10 ⁷ S), large deformation (100% and above) range material dynamic strength research provides a new technical method.

The technical scheme for solving the technical problems is as follows:

the invention provides a cylindrical surface RM instability disturbance growth material strength measurement experiment system, which comprises: experimental devices and measurement systems;

the experimental device comprises a driving sleeve and a preset disturbance target, wherein the driving sleeve is a hollow cylinder, and the preset disturbance target matched with the driving sleeve is coaxially arranged in the driving sleeve;

the preset disturbance target is a hollow cylinder, a filling space is arranged in the preset disturbance target, and the filling space is filled with a filling medium.

Further, in the experiment system for measuring the strength of the cylindrical RM instability disturbance growth material, the outer diameter of the preset disturbance target is smaller than the inner diameter of the driving sleeve, and the material, thickness, length and speed of the driving sleeve are related to the impact loading state required by the experiment and can be adjusted according to the experiment test requirements.

Furthermore, the experiment system for measuring the strength of the cylindrical surface RM instability disturbance growth material is provided with a single or multiple disturbance modes of preset disturbance interfaces uniformly or randomly along the axial direction of the inner wall of the preset disturbance target, the preset disturbance target material is a material with the strength to be measured, the thickness and the length of the preset disturbance target are related to the impact loading state required by the experiment, and the preset disturbance target can be adjusted according to the experiment testing requirements.

Further, in the experiment system for measuring the strength of the cylindrical RM instability disturbance growth material, a sleeve implosion driving source is arranged outside the driving sleeve, so that the cylindrical implosion impact loading on the preset disturbance target is realized by loading the driving sleeve implosion through a high-precision cylindrical surface.

Further, the experiment system for measuring the strength of the cylindrical RM instability disturbance growth material is used for measuring the disturbance growth speed and the disturbance interface morphology parameters of a disturbance interface, and comprises a high-speed photographic imaging device and a speed measurement probe, wherein the high-speed photographic imaging device is arranged above the end face of the driving sleeve, and the speed measurement probe is arranged in the filling space.

Further, the experimental system for measuring the strength of the material with the cylindrical surface RM instability disturbance growth is characterized in that the high-speed photographic imaging device is vertically arranged above the end face of the driving sleeve, and the high-speed photographic imaging device adopts a visible light imaging mode, an X-ray imaging mode or a proton photographic imaging mode.

Further, in the experiment system for measuring the strength of the cylindrical RM unstable perturbation growth material, the speed measurement probe is coaxially arranged in the filling space, and a light outlet of the speed measurement probe faces to the inner surface of the preset perturbation target.

Further, the experiment system for measuring the strength of the material is disturbed and grown by the instability of the cylindrical surface RM, and the speed measuring probe with a large light spot is adopted.

Further, the experiment system for measuring the strength of the material is increased by the instability disturbance of the cylindrical surface RM, and the speed measuring probe adopts a laser interference speed measuring probe with a large light spot.

The invention also provides an experimental method for measuring the strength of the cylindrical surface RM instability disturbance growth material, which is based on the experimental system for measuring the strength of the cylindrical surface RM instability disturbance growth material and comprises the following steps:

coaxially arranging a preset disturbance target in a driving sleeve;

arranging high-speed photographic imaging equipment perpendicular to the end face of the driving sleeve, coaxially arranging a speed measuring probe in the filling space, enabling a light outlet to face the inner surface of the preset disturbance target, and filling the filling medium into the preset disturbance target;

starting a sleeve implosion driving source to load and drive a sleeve to carry out impact loading on a preset disturbance target;

and measuring by using high-speed photographic imaging equipment and a speed measuring probe to obtain disturbance parameters, and processing disturbance growth data to obtain the material strength.

Compared with the prior art, the invention has the following beneficial effects:

the experiment system for measuring the strength of the cylindrical RM instability disturbance growth material utilizes the high-precision cylindrical impact loading of the internal explosion of the driving sleeve to transmit the impact loading to the preset disturbance target and the filling medium in the preset disturbance target, utilizes the measurement system to precisely measure the disturbance interface peak, the bubble growth average speed and the disturbance growth, and obtains the strength data of the material with high strain rate and large strain through data processing which is compared with the experiment value as a convergence basis. The method is used for solving the problems of measurement of the dynamic strength of the material under the conditions of complex stress strain loading, large strain and high strain rate and research on a physical model, and the measurement of the dynamic strength of the material by using the instability and the increase of the cylindrical surface RM is a great supplement of the existing method for measuring the dynamic strength of the material under the extreme loading condition. And (4) obtaining the strength data of the material with high strain rate and large strain through data processing which is compared with the experimental value and is a convergence basis. The cylindrical RM disturbance increasing method for establishing material strength measurement under extreme conditions is complementary with the existing strength measurement experiment technology, and loads high pressure (several GPa-hundreds GPa, even more than 1TPa under individual conditions) and high strain rate (10 TPa) for complex stress and strain ⁵ /s-10 ⁷ The dynamic strength research of the material in the range of 100 percent or more of/s) and large deformation provides a new technical method, and has important significance for measuring the strength of the material under extreme conditions of high pressure, high strain rate, large deformation and the like.

The experimental system for measuring the strength of the cylindrical RM instability disturbance growth material utilizes the driving sleeve and the preset disturbance target filled with the filling medium to measure the RM instability strength, and expands a material strength measuring method in the problem of interface disturbance uncertainty of shock waves from heavy fluid to light fluid.

The experiment system for measuring the strength of the cylindrical RM instability disturbance growth material is beneficial to experimental arrangement and test equipment and experimental implementation when the filling medium is a vacuum, namely a specific target (metal/vacuum interface) structure condition of a disturbance growth method, and is convenient for acquiring high-precision experimental data. The experiment system for measuring the strength of the cylindrical RM instability disturbance growth material provided by the invention utilizes the driving sleeve and the preset disturbance target filled with the filling medium, adopts an RM disturbance growth method, obtains a strength result similar to the loading condition of basic problems of physical problems such as micro-jet, micro-jet and the like, and is favorable for establishing a physical model meeting practical application.

The experiment system for measuring the strength of the cylindrical surface RM instability disturbance growth material, provided by the invention, has the advantages of simple structure and convenience in operation, can be used for measuring the dynamic strength of the material under the conditions of complex stress strain loading, large strain and high strain rate, and lays a foundation for researching the calibration relation of the strength of the material under the conditions of large strain loading and high strain rate, the strength-disturbance parameter and the cylindrical surface RM instability disturbance growth evolution law.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic diagram of the RM perturbation growing method of the present invention;

fig. 2 is a schematic structural diagram of an experimental system for measuring strength of a cylindrical RM instability disturbance growth material according to the present invention.

Reference numbers and corresponding part names in the drawings:

in the figure: 11-drive sleeve, 12-preset disturbance target, 13-fill space, 14-preset disturbance interface, 21-high-speed photographic imaging equipment and 22-speed probe.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

When the interface of different density materials is accelerated, the interface disturbance and instability caused by the light fluid pushing the heavy fluid are called Rayleigh-Taylor (RT) instability. The interfacial instability when the shock wave passes through an interface between two fluids of different densities is the Richtmyer-Meshkov (RM) instability. The instability disturbance growth method is an experimental method for obtaining material strength information by observing the development of disturbance under dynamic loading based on the inhibition characteristic of material strength to instability growth, and compared with other existing high strain rate range strength measurement methods, the disturbance growth method has the potential technical advantages of high loading pressure and wide strain range strength property research. In this regard, the cylindrical RM instability intensity measurement method is based on an RM perturbation growth method, and the principle thereof is explained:

referring to fig. 1, fig. 1 shows the principle of RM perturbation growing method: when the impact generated by the explosive or flyer is loaded on the disturbed interface with density gradient, the disturbance is increased continuously, and the disturbed interface has typical large-scale structures, namely bubbles and peaks, in a short time. The dynamic strength of the material can be obtained by measuring disturbance peaks, bubble growth speed and disturbance morphology and subsequent data processing.

Based on an RM perturbation growth method, the embodiment of the invention provides a cylindrical RM instability perturbation growth material strength measurement experiment system, which realizes material strength measurement under high pressure, high strain rate and large strain.

Referring to fig. 2, an embodiment of the present invention provides an experiment system for measuring strength of a cylindrical RM instability disturbance growth material, including: the experimental device and the measuring system utilize the drive sleeve 11 in the experimental device to implode the high-precision cylindrical surface impact load and transmit to the preset disturbance target 12 and the filling medium in the disturbance cylinder 12, and utilize the measuring system to carry out precision measurement on the disturbance peak, the bubble growth average speed and the disturbance growth morphology, thereby realizing the material strength measurement under extreme conditions of high pressure, high strain rate, large deformation and the like.

The experimental device comprises: the device comprises a driving sleeve 11 and a preset disturbance target 12, wherein the driving sleeve 11 is a hollow cylinder, the shape and the size of the preset disturbance target 12 are matched with those of the driving sleeve 11, and the preset disturbance target 12 is coaxially arranged in the driving sleeve 11. The length of the preset disturbance target is greater than the length of the target after being influenced by sparse waves on the sides of the two ends. The material, thickness, length and speed of the driving sleeve 11 are related to the impact loading state required by the experiment and can be adjusted according to the experiment test requirement.

The outside of the driving sleeve 11 is provided with a sleeve implosion driving source, so that high-precision cylindrical implosion loading of the driving sleeve 11 is realized. In the embodiment of the present invention, the sleeve implosion driving source may be a large-current pulse power device, and the magnetic driving loading of the large-current pulse power device is used to realize the high-precision cylindrical implosion loading of the driving sleeve 11. The magnetic driving cylindrical sleeve loading has the characteristics of easily controlled loading state, easily adjusted loading state and good loading uniformity, and has unique advantages in macroscopic sample cylindrical sleeve implosion loading application. The sleeve implosion driving source can also adopt explosive loading, multi-path laser driving and X-ray radiation loading to realize cylindrical sleeve implosion. The driving sleeve 11 has a cylindrical structure, the material of the driving sleeve 11 is a metal material with good conductivity and ductility, the material of the driving sleeve 11 is preferably copper and aluminum, and the material has rich high-pressure physical parameters and is easy to process.

The preset disturbance target 12 is a hollow cylinder, and the shape and the size of the preset disturbance target 12 are matched with the driving sleeve 11. The preset disturbance target 12 is made of a material with strength to be tested, the thickness and the length of the preset disturbance target 12 are related to the impact loading state required by an experiment, and the preset disturbance target can be adjusted according to the experiment testing requirement. A filling space 13 is provided in the pre-perturbation target 12, and the filling space 13 is filled with a filling medium. The material of the filling medium is selected from materials with known parameters such as easy processing, equation of state, optical refractive index and the like, and the material of the filling medium preferably adopts vacuum, water, polystyrene, organic glass, quartz or LiF. When the material of the filling medium is vacuum, namely a specific target (metal/vacuum interface) structure based on an RM disturbance growth method, the method is beneficial to experimental arrangement and experimental implementation and is convenient for high-precision experimental data acquisition. The outer diameter of the preset disturbance target 12 is smaller than the inner diameter of the driving sleeve 11, and different impact loading pressures and loading states can be adjusted through gap adjustment.

In a feasible implementation scheme, the preset disturbance interfaces 14 with a plurality of disturbance modes are uniformly or randomly arranged along the axial direction of the inner wall of the preset disturbance target 12, and the plurality of preset disturbance interfaces 14 are arranged on the inner wall of the preset disturbance target 12, so that different state measurements of the same experiment can be realized, the experiment efficiency is improved, and the data check among different disturbance growth modes can also improve the experiment data precision. Each preset perturbation interface 14 may be composed of one or more minimum units. The preset disturbance interface 14 may be in the shape of a sine wave line, an arc, a hemisphere, or the like, and the preset disturbance interface 14 is preferably a sine wave line disturbance interface, which is convenient for numerical modeling and experimental analysis.

The measurement system is used for measuring the disturbance growth speed and the disturbance interface morphology parameters of the disturbance interface, and comprises the following steps: a high-speed photographic imaging device 21 and a speed probe 22, the high-speed photographic imaging device 21 is arranged above the end face of the driving sleeve 11, specifically, the high-speed photographic imaging device 21 is arranged vertically above the end face of the driving sleeve 11. The high-speed photographic imaging device 21 adopts a visible light imaging, X-ray imaging or proton photographic imaging mode, the high-speed photographic imaging device 21 uses the high-speed photographic imaging device in a visible light wavelength range when the filling medium in the filling space 13 is a visible light waveband transparent material, and changes the filling space 13 into a transmission type imaging device such as X-ray imaging or proton photographic when the filling space is a visible light waveband opaque material. And obtaining disturbance peak, bubble growth average speed, disturbance growth maximum amplitude and geometry related parameters through disturbance growth data analysis. The high-speed photography imaging device 21 can be a high-speed photography imager or a high-speed photography framing camera, the high-speed photography imager is used for measuring disturbance growth and interface morphology, the high-speed photography framing camera is used for obtaining disturbance morphology at different moments when the filling medium is a transparent material, and disturbance peaks, bubble growth average speed, disturbance growth maximum amplitude and geometric configuration related parameters are obtained through analysis. In other embodiments of the present invention, the high-speed photography device may be replaced by an X-ray test device, and the topography of the disturbed interface is obtained by X-ray penetration imaging.

The speed probe 22 is disposed in the filling space 13, specifically, the speed probe 22 is coaxially disposed in the filling space 13, the filling medium is filled around the speed probe 22, and the light outlet of the speed probe 22 faces the inner surface of the preset perturbation target 12. The tachometer probe 22 is used to measure the interface velocity, taking into account the apparent velocity refractive index modification, and can obtain the perturbation spike growth rate, bubble growth rate, and sleeve interface velocity history. A speed measuring probe 22 with a large light spot is adopted for the interface of the preset disturbance target 12, and a single-point multi-velocity spectrum measurement and analysis method is utilized to obtain the highest speed curve and the lowest speed curve in the speed measuring light spot of the preset disturbance target 12. More specifically, the speed measuring probe 22 is a laser interference speed measuring probe with a large light spot, the speed measuring probe is connected with a laser velocimeter, the laser velocimeter is used for continuously measuring the interface speed, and after the apparent speed refractive index of the interface is considered for correction, the disturbance peak increasing speed, the bubble increasing speed and the sleeve interface speed history can be obtained.

According to the experimental system for measuring the strength of the cylindrical RM instability disturbance growth material, the driving sleeve 11 and the preset disturbance target 12 filled with the filling medium are utilized, an RM disturbance growth method is adopted, the obtained strength result is similar to the loading condition of the basic problems of physical problems such as micro-jet and micro-jet, and the establishment of a physical model meeting practical application is facilitated. The driving sleeve 11 and the preset disturbance target 12 filled with the filling medium are used for RM instability strength measurement, and a strength measurement method for the interface disturbance uncertainty problem of the shock wave from heavy fluid to light fluid is expanded. The device has a simple structure, is convenient to operate, can be used for measuring the dynamic strength of the material under the conditions of complex stress strain loading, large strain and high strain rate, is a great supplement to the existing method for measuring the dynamic strength of the material under the extreme loading conditions of high pressure, high strain rate, large deformation and the like, and has important significance.

Example 2

Referring to fig. 1 and 2, an experimental method for measuring strength of a cylindrical RM instability disturbance growth material of the present embodiment includes the following steps:

coaxially arranging a preset disturbance target 12 in a driving sleeve 11; arranging high-speed photographic imaging equipment perpendicular to the end face of the driving sleeve 11, coaxially arranging a speed measuring probe 22 in the filling space 13, enabling a light outlet to face the inner surface of the preset disturbance target 12, and filling the preset disturbance target 12 with a filling medium; the sleeve implosion driving source loads the driving sleeve to impact and load the preset disturbance target 12, disturbance parameters are obtained through measurement of the high-speed photographic imaging device 21 and the speed measuring probe 22, and disturbance growth data are processed to obtain material strength.

Starting the internal explosion high-precision cylindrical surface impact loading of the driving sleeve, and measuring the disturbance increase and the interface morphology by high-speed photographic imaging equipment; and measuring the interface speed by a speed measuring probe, and analyzing disturbance growth data to obtain a disturbance peak, a bubble growth average speed, a disturbance growth maximum amplitude and geometric configuration related parameters. A speed measuring probe with a large light spot is adopted for an interference target interface, and a single-point multi-velocity spectrum measurement and analysis method is utilized to obtain the highest speed curve and the lowest speed curve in the speed measuring light spot of the interference target. And combining with the disturbance development rule of the RM target, respectively confirming the peak speed, the bubble speed, the disturbance stop growth position and the time point. And (3) performing data processing to obtain the strength of the material in the experiment by utilizing the fluid dynamics numerical simulation calculation of different strength constitutive models or parameters and comparing the calculated data with the data such as the experimental measurement disturbance growth speed, amplitude, interface morphology and the like to obtain a convergence basis.

The above embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above embodiments are only examples of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. A cylindrical RM instability-perturbed auxetic material strength measurement experimental system, comprising: experimental devices and measurement systems;

the experimental device comprises a driving sleeve (11) and a preset disturbance target (12), wherein the driving sleeve (11) is a hollow cylinder, and the preset disturbance target (12) matched with the driving sleeve (11) is coaxially arranged in the driving sleeve (11);

the preset disturbance target (12) is a hollow cylinder, a filling space (13) is arranged in the preset disturbance target (12), and filling media are filled in the filling space (13).

2. The cylindrical RM instability disturbance growth material strength measurement experiment system according to claim 1, wherein the preset disturbance target (12) has an outer diameter smaller than the inner diameter of the driving sleeve (11), and the material, thickness, length, speed of the driving sleeve (11) are related to the impact loading state required by the experiment and can be adjusted according to the experiment test requirements.

3. The experimental system for measuring the strength of the cylindrical RM instability disturbance growth material according to claim 1, wherein a preset disturbance interface (14) with single or multiple disturbance modes is uniformly or randomly arranged along the axial direction of the inner wall of the preset disturbance target (12), the preset disturbance target material is a material with the strength to be measured, and the thickness and the length of the preset disturbance target (12) are related to the impact loading state required by the experiment and can be adjusted according to the experimental test requirement.

4. The cylindrical RM instability perturbation and growth material strength measurement experimental system according to claim 1, wherein a sleeve implosion driving source is provided outside the driving sleeve (11) to achieve cylindrical implosion impact loading on the preset perturbation target (12) by high precision cylindrical loading of the driving sleeve (11) implosion.

5. The cylindrical RM instability disturbance growth material strength measurement experiment system according to claim 1, wherein the measurement system is configured to measure disturbance growth speed and disturbance interface morphology parameters of a disturbance interface, and comprises a high-speed photography imaging device (21) and a speed measurement probe (22), the high-speed photography imaging device (21) is arranged above the end face of the driving sleeve (11), and the speed measurement probe (22) is arranged in the filling space (13).

6. The cylindrical RM instability-disturbed build material strength measurement experiment system according to claim 5, wherein the high-speed photographic imaging device (21) is arranged vertically above the end face of the driving sleeve (11), the high-speed photographic imaging device (21) using visible light imaging, X-ray imaging, or proton photographic imaging.

7. The system for testing the strength measurement of the cylindrical RM instability disturbance-growth material according to claim 5, wherein the velocimetry probe (22) is coaxially arranged in the filling space (13), and a light outlet of the velocimetry probe (22) faces the inner surface of the preset disturbance target (12).

8. The cylindrical RM instability-disturbed growth material strength measurement experiment system according to claim 5, characterized in that the tacho probe (22) employs a tacho probe with a large light spot.

9. The cylindrical RM instability-disturbed growth material strength measurement experiment system according to claim 8, characterized in that the velocimetry probe (22) employs a laser interference velocimetry probe with a large light spot.

10. A cylindrical RM instability perturbed auxetic material strength measurement experimental method, based on the cylindrical RM instability perturbed auxetic material strength measurement experimental system according to any of claims 1-9, comprising the following steps:

coaxially arranging a preset disturbance target in a driving sleeve;

arranging high-speed photographic imaging equipment perpendicular to the end face of the driving sleeve, coaxially arranging a speed measuring probe in the filling space, enabling a light outlet to face the inner surface of the preset disturbance target, and filling the filling medium into the preset disturbance target;

starting a sleeve implosion driving source loading driving sleeve to impact and load a preset disturbance target;

and measuring by using high-speed photographic imaging equipment and a speed measuring probe to obtain disturbance parameters, and processing disturbance growth data to obtain the material strength.

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