CN117686358B - Parameter determination method and device for low-frequency controllable impact physical simulation device - Google Patents
Parameter determination method and device for low-frequency controllable impact physical simulation device Download PDFInfo
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Abstract
The invention provides a parameter determination method of a low-frequency controllable impact physical simulation device, which relates to the technical field of material dynamics test, wherein the low-frequency controllable impact physical simulation device is formed by a split type Hopkinson bar configuration SHPB which is formed by a spring configuration transmission bar system, and the method comprises the following steps: based on the user requirements corresponding to the low-frequency controllable impact physical simulation device, the equipment field size in the length direction, which is available for the spring configuration transmission rod system, and the lowest main frequency of the stress waveform are obtained; determining a first minimum characteristic length of an incident rod and a second minimum characteristic length of a transmission rod of the spring configuration transmission rod system according to the lowest main frequency of the stress waveform; and further, the rotation diameter and the rotation number of the spring configuration are calculated, so that the parameters of the low-frequency controllable impact physical simulation device are constructed by the spring configuration transmission rod system, the matching with the key parameters of the dynamic load actually measured by a user is realized, the complex waveform is effectively restored, and the dynamic mechanical response of the tested material has the characteristic of quantification.
Description
Technical Field
The invention relates to the technical field of material dynamics testing, in particular to a method and a device for determining parameters of a low-frequency controllable impact physical simulation device.
Background
At present, in the field of material dynamics testing, the most commonly used and scientifically strongest device is a split Hopkinson rod (split Hopkinson bar, SHPB), and the split Hopkinson rod can apply unidirectional impact load to a material, avoid load stress wave oscillating back and forth in a sample, and achieve a scientific and effective impact simulation test function. However, because the SHPB adopts a linear transmission rod system, the stress wave with longer wavelength and lower frequency cannot be simulated due to the huge occupied length of equipment (the stress wave excitation requirement of 500Hz frequency and the indoor field with at least the total length of 24m are required); meanwhile, the impact element adopted by the SHPB is simple in size, any controllable stress waveform required by a user cannot be excited, no precedent of the SHPB adopting a spring configuration exists, and no parameter determination method of the SHPB adopting the spring configuration exists.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent.
Therefore, a first object of the present invention is to provide a method for determining parameters of a low-frequency controllable impact physical simulation device, which is capable of matching with key parameters of a dynamic load actually measured by a user by constructing parameters of the low-frequency controllable impact physical simulation device by a spring-configured transmission rod system, and effectively restoring complex waveforms, so that dynamic mechanical response of a tested material has a quantified characteristic.
A second object of the present invention is to provide a parameter determining apparatus for a low frequency controllable impact physical simulation apparatus.
A third object of the present invention is to propose an electronic device.
A fourth object of the present invention is to propose a non-transitory computer readable storage medium storing computer instructions.
To achieve the above object, an embodiment of a first aspect of the present invention provides a method for determining parameters of a low-frequency controllable impact physical simulation device, wherein the low-frequency controllable impact physical simulation device is formed by a split hopkinson bar configuration SHPB formed by a spring configuration transmission bar system, the method comprising:
based on the user requirements corresponding to the low-frequency controllable impact physical simulation device, acquiring the equipment field size in the usable length direction of the spring configuration transmission rod system and the lowest main frequency of the stress waveform;
calculating a first minimum characteristic length of an incident rod and a second minimum characteristic length of a transmission rod of the spring configuration transmission rod system according to the lowest main frequency of the stress waveform;
and calculating the turning diameter and the turning number of the spring configuration according to the first minimum characteristic length, the second minimum characteristic length and the equipment field size.
To achieve the above object, a second aspect of the present invention provides a parameter determining apparatus of a low-frequency controllable impact physical simulation apparatus, wherein the low-frequency controllable impact physical simulation apparatus is an split hopkinson bar configuration SHPB constructed by a spring-configured transmission bar system, the apparatus comprising:
the first acquisition module is used for acquiring the equipment field size in the usable length direction of the spring-configured transmission rod system and the lowest main frequency of the stress waveform based on the user requirements corresponding to the low-frequency controllable impact physical simulation device;
the first calculating module is used for calculating a first minimum characteristic length of an incident rod of the spring configuration transmission rod system and a second minimum characteristic length of a transmission rod according to the lowest main frequency of the stress waveform;
and the second calculation module is used for calculating the turning diameter and the turning number of the spring configuration according to the first minimum characteristic length, the second minimum characteristic length and the equipment field size.
To achieve the above object, an embodiment of a third aspect of the present invention provides an electronic device, including: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of the first aspect.
To achieve the above object, an embodiment of a fourth aspect of the present invention proposes a non-transitory computer-readable storage medium storing computer instructions for causing the computer to execute the method according to the first aspect.
The embodiment of the invention discloses a parameter determining method, device electronic equipment and storage medium of a low-frequency controllable impact physical simulation device, wherein the low-frequency controllable impact physical simulation device is formed by split type Hopkinson bar configuration SHPB which is formed by a spring configuration transmission bar system, and the method comprises the following steps: based on the user requirements corresponding to the low-frequency controllable impact physical simulation device, the equipment field size in the length direction, which is available for the spring configuration transmission rod system, and the lowest main frequency of the stress waveform are obtained; determining a first minimum characteristic length of an incident rod and a second minimum characteristic length of a transmission rod of the spring configuration transmission rod system according to the lowest main frequency of the stress waveform; and further, the rotation diameter and the rotation number of the spring configuration are calculated, so that the parameters of the low-frequency controllable impact physical simulation device are constructed by the spring configuration transmission rod system, the matching with the key parameters of the dynamic load actually measured by a user is realized, the complex waveform is effectively restored, and the dynamic mechanical response of the tested material has the characteristic of quantification.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a flow chart of a method for determining parameters of a low-frequency controllable impact physical simulation device according to an embodiment of the present invention;
FIG. 2 is a diagram of an example of a low frequency controllable impact physical simulation device according to an embodiment of the present invention;
FIG. 3 is a flow chart of an embodiment of a low frequency controllable impact physical simulation device according to the present invention;
fig. 4 is a schematic structural diagram of a parameter determining device of a low-frequency controllable impact physical simulation device according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The following describes a method and apparatus for determining parameters of a low frequency controllable impact physical simulation apparatus according to an embodiment of the present invention with reference to the accompanying drawings.
Fig. 1 is a flow chart of a method for determining parameters of a low-frequency controllable impact physical simulation device according to an embodiment of the present invention, wherein the low-frequency controllable impact physical simulation device is formed by a split hopkinson bar configuration SHPB formed by a spring configuration transmission bar system.
As shown in fig. 1, the method comprises the steps of:
step 101, based on the user requirements corresponding to the low-frequency controllable impact physical simulation device, the equipment field size in the length direction, which is available for the spring-configured transmission rod system, and the lowest main frequency of the stress waveform are obtained.
In some embodiments, the low-frequency controllable impact physical simulation device is implemented by using a split hopkinson rod configuration (split Hopkinson bar, SHPB) formed by a spring-configured transmission rod system, as shown in fig. 2, to modify the SHPB linear transmission rod system into an arc transmission rod system, and further proposes a transmission rod system with a "spring configuration", so that the theoretical length is increased by 100 times under the same floor condition, namely, the corresponding test waveform frequency is reduced by 100 times, and the impact waveform simulating the single-digit main frequency range is implemented.
Alternatively, the user demand may be any user-controllable shock waveform.
Further, the equipment field size L and the lowest stress waveform main frequency f corresponding to the target controllable impact waveform can be obtained according to any target controllable impact waveform, wherein the equipment field size L and the lowest stress waveform main frequency f can meet implementation of the target controllable impact waveform.
Step 102, calculating a first minimum characteristic length of an incident rod and a second minimum characteristic length of a transmission rod of the spring configuration transmission rod system according to the lowest main frequency of the stress waveform.
Optionally, the first minimum characteristic length and the second minimum characteristic length are each half of a spring configuration drive train corresponding to the springs.
Further, the first minimum characteristic length L1 of the incident rod and the second minimum characteristic length L2 of the transmission rod may be calculated according to the material wave speed Ce of the transmission rod corresponding to the transmission rod with a spring configuration, where L1 is equal to L2, specifically, the calculation manner of the first minimum characteristic length or the second minimum characteristic length of the transmission rod may be:
L1=Ce/f
step 103, calculating the turning diameter and the turning number of the spring configuration according to the first minimum characteristic length, the second minimum characteristic length and the equipment site size:
in some embodiments, after obtaining the first minimum feature length L1 and the second minimum feature length L2 and calculating the total length 2L1 of the corresponding drive train of the spring configuration drive train, the revolution diameter D and the number of revolutions N of the spring configuration are calculated according to the equipment field size available to the user, wherein 2l1=pi DN, and under this constraint condition, the revolution gap s should satisfy: sN < L-L0.
Wherein L0 is the length of the device necessary for exiting the spring rod system, and is generally selected within the range of 5-7 m.
In sum, by determining three key parameters of the minimum characteristic length L1 or L2, the revolution diameter D and the revolution number N corresponding to the incident rod and the transmission rod of the spring configuration transmission rod system, the matching of the key parameters with the actual dynamic load measured by a user is realized, and the complex waveform is effectively restored.
The embodiment of the invention provides a parameter determination method of a low-frequency controllable impact physical simulation device, which is formed by a split type Hopkinson bar configuration SHPB formed by a spring configuration transmission rod system, and comprises the following steps: based on the user requirements corresponding to the low-frequency controllable impact physical simulation device, the equipment field size in the length direction, which is available for the spring configuration transmission rod system, and the lowest main frequency of the stress waveform are obtained; determining a first minimum characteristic length of an incident rod and a second minimum characteristic length of a transmission rod of the spring configuration transmission rod system according to the lowest main frequency of the stress waveform; and further, the rotation diameter and the rotation number of the spring configuration are calculated, so that the parameters of the low-frequency controllable impact physical simulation device are constructed by the spring configuration transmission rod system, the matching with the key parameters of the dynamic load actually measured by a user is realized, the complex waveform is effectively restored, and the dynamic mechanical response of the tested material has the characteristic of quantification.
In order to clearly illustrate the above embodiment, the present embodiment further provides a method for implementing the low-frequency controllable impact physical simulation device, and fig. 3 is a flowchart of an implementation of the low-frequency controllable impact physical simulation device according to the embodiment of the present invention.
As shown in fig. 3, the method may include the steps of:
step 301, obtaining controllable stress wave waveform parameters in user requirements.
Optionally, the controllable stress wave waveform parameter is a complex, arbitrary waveform, multi-peak vibration time course u (t).
Step 302, designing a body type distribution function of the shot bullet with the inverted trapezoid cross section along the length direction according to the controllable stress wave waveform parameters and the key parameters of the body type of the section of the spring configuration transmission rod system, and generating the shot bullet with the inverted trapezoid cross section with the body type distribution function.
In this embodiment, the section of the spring-configured drive rod system is inverted trapezoid, and key parameters of the section of the spring-configured drive rod system include the rotation diameter of the spring configuration, the top and bottom length of the inverted trapezoid section, and the section height of the spring-configured drive rod system.
Further, the traditional SHPB can ensure the most important one-dimensional stress wave propagation assumption in the SHPB by adopting a linear and cylindrical transmission rod system, the transmission rod system related to the invention is required to be arc-shaped, namely the stress wave is required to realize equal curvature turning, and the transmission rod system can continuously keep the one-dimensional stress wave propagation assumption in the spring configuration, so that the requirement of equal curvature turning of the stress wave is realized by designing the section shape of the transmission rod system of the spring configuration, and the key parameter correspondence table of the section shape of the transmission rod system of the specific spring configuration is shown in the table.
TABLE 1 Key parameters mapping table for section type of spring-configured drive rod system
Optionally, according to the controllable stress wave waveform parameter and the key parameter of the section shape of the transmission rod system with the spring configuration, designing a body shape distribution function of the shot bullet with the inverted trapezoid section along the length direction, and generating the shot bullet with the inverted trapezoid section with the body shape distribution function, wherein one implementation mode of generating the shot bullet with the inverted trapezoid section comprises the steps of calculating the amplitude scaling factor of the waveform inversion rod shape according to the rotation diameter of the spring configuration, the top and bottom length of the inverted trapezoid section and the section height of the transmission rod system with the spring configuration; according to the rotation diameter of the spring configuration and the controllable stress wave waveform parameter, calculating the phase correction time sequence of the stress wave; according to the amplitude scaling factor of the waveform inversion rod, the controllable stress wave waveform parameter and the phase correction time sequence, a body type distribution function of the shot bullet with the inverted trapezoid cross section along the length direction is generated, and the shot bullet with the inverted trapezoid cross section with the body type distribution function is generated, wherein the position of the shot bullet with the inverted trapezoid cross section is shown in figure 2.
In some embodiments, in the case where the controllable stress wave waveform parameter is u (t), one way to calculate the body shape distribution function h (x) of the shot of the inverted trapezoidal section along the length direction may be:
h(x)=k*u(t1)
wherein k is the amplitude scaling factor of the waveform inversion rod shape and is determined according to the key parameters of the section shape of the transmission rod system with the spring configuration in table 1; t1 is the phase correction timing of t, and is determined according to the different revolution diameters and the amplitude distribution of u (t) in table 1.
Step 303, taking the waveform of the inverted trapezoid section shot bullet when exciting the low-frequency controllable impact physical simulation device as the controllable impact stress waveform corresponding to the controllable stress wave waveform parameter.
In some embodiments, the low-frequency controllable impact physical simulation device is excited by the inverted trapezoid-section shot bullet, the impact test result generated by the device is matched with the on-site actual measurement result and the actual measurement dynamic load key parameters of the user, the complex waveform is effectively restored, the scientific significance is clear, and the test result is accurate and reliable.
The implementation method of the low-frequency controllable impact physical simulation device provided by the embodiment of the invention obtains the controllable stress wave waveform parameters in the demands of users; according to the controllable stress wave waveform parameters and the key parameters of the section body type of the spring configuration transmission rod system, designing the body type distribution function of the firing bullet with the inverted trapezoid section along the length direction, and generating the firing bullet with the inverted trapezoid section with the body type distribution function; and taking the waveform of the inverted trapezoid section shot bullet when exciting the low-frequency controllable impact physical simulation device as the controllable impact stress waveform corresponding to the controllable stress wave waveform parameter. Therefore, matching with key parameters of the dynamic load actually measured by a user is realized by shooting bullets with inverted trapezoid cross sections, the complex waveform is effectively restored, the test result is accurate and reliable, and the significance of engineering guidance is improved.
In order to realize the embodiment, the invention also provides a parameter determining device of the low-frequency controllable impact physical simulation device.
Fig. 4 is a schematic structural diagram of a parameter determining device of a low-frequency controllable impact physical simulation device according to an embodiment of the present invention, where the low-frequency controllable impact physical simulation device is formed by a split hopkinson bar configuration SHPB formed by a spring-configured transmission rod system.
As shown in fig. 4, the parameter determining device 40 of the low frequency controllable impact physical simulation device includes: the first acquisition module 41, the first calculation module 42 and the second calculation module 43.
The first obtaining module 41 is configured to obtain, based on a user requirement corresponding to the low-frequency controllable impact physical simulation device, a device field size in a length direction that is available for the spring-configured transmission rod system, and a lowest main frequency of a stress waveform;
a first calculation module 42 for calculating a first minimum characteristic length of an incident rod of the spring configuration transmission rod system and a second minimum characteristic length of a transmission rod according to the lowest dominant frequency of the stress waveform;
and the second calculating module 43 is configured to calculate the revolution diameter and the revolution number of the spring configuration according to the first minimum feature length, the second minimum feature length and the equipment field size.
Further, in one possible implementation of the embodiment of the present invention, the first minimum feature length and the second minimum feature length are each half of a spring configuration transmission line corresponding to a spring.
Further, in one possible implementation manner of the embodiment of the present invention, the cross-sectional shape of the spring-configured transmission rod system is an inverted trapezoid, and the key parameters of the cross-sectional shape of the spring-configured transmission rod system include the rotation diameter of the spring configuration, the top and bottom length of the inverted trapezoid cross-section, and the cross-sectional height of the spring-configured transmission rod system.
Further, in a possible implementation manner of the embodiment of the present invention, the apparatus further includes:
the second acquisition module is used for acquiring the controllable stress wave waveform parameters in the user demand;
the generation module is used for designing a body type distribution function of the shot bullet with the inverted trapezoid cross section along the length direction according to the controllable stress wave waveform parameters and the body type key parameters of the section of the spring configuration transmission rod system, and generating the shot bullet with the inverted trapezoid cross section with the body type distribution function;
and the excitation module is used for taking the waveform of the inverted trapezoid section shot bullet when exciting the low-frequency controllable impact physical simulation device as a controllable impact stress waveform corresponding to the controllable stress wave waveform parameter.
Further, in one possible implementation manner of the embodiment of the present invention, the generating module is specifically configured to:
calculating the amplitude scaling factor of the waveform inversion rod shape according to the rotation diameter of the spring configuration, the top-bottom length of the inverted trapezoid section and the section height of the transmission rod system of the spring configuration;
according to the rotation diameter of the spring configuration and the controllable stress wave waveform parameter, calculating the phase correction time sequence of the stress wave;
and generating a body type distribution function of the shot bullet with the inverted trapezoid cross section along the length direction according to the amplitude scaling factor of the waveform inversion rod, the controllable stress wave waveform parameter and the phase correction time sequence, and generating the shot bullet with the inverted trapezoid cross section with the body type distribution function.
It should be noted that the foregoing explanation of the method embodiment is also applicable to the apparatus of this embodiment, and will not be repeated here.
The invention provides a parameter determining device of a low-frequency controllable impact physical simulation device, which is formed by a split type Hopkinson bar configuration SHPB formed by a spring configuration transmission rod system, and comprises the following steps: based on the user requirements corresponding to the low-frequency controllable impact physical simulation device, the equipment field size in the length direction, which is available for the spring configuration transmission rod system, and the lowest main frequency of the stress waveform are obtained; determining a first minimum characteristic length of an incident rod and a second minimum characteristic length of a transmission rod of the spring configuration transmission rod system according to the lowest main frequency of the stress waveform; and further, the rotation diameter and the rotation number of the spring configuration are calculated, so that the parameters of the low-frequency controllable impact physical simulation device are constructed by the spring configuration transmission rod system, the matching with the key parameters of the dynamic load actually measured by a user is realized, the complex waveform is effectively restored, and the dynamic mechanical response of the tested material has the characteristic of quantification.
In order to achieve the above embodiment, the present invention further provides an electronic device, including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the aforementioned method.
To achieve the above embodiments, the present invention also proposes a non-transitory computer-readable storage medium storing computer instructions for causing the computer to execute the aforementioned method.
In order to realize the above embodiments, the present invention also proposes a computer program product comprising a computer program which, when executed by a processor, implements a method according to the foregoing.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and additional implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order from that shown or discussed, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. As with the other embodiments, if implemented in hardware, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like. While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. A method for determining parameters of a low frequency controllable impact physical simulation device, wherein the low frequency controllable impact physical simulation device is formed by a split hopkinson bar configuration SHPB constructed by a spring-configured drive train, the method comprising:
based on the user requirements corresponding to the low-frequency controllable impact physical simulation device, acquiring the equipment field size in the usable length direction of the spring configuration transmission rod system and the lowest main frequency of the stress waveform;
calculating a first minimum characteristic length of an incident rod and a second minimum characteristic length of a transmission rod of the spring configuration transmission rod system according to the lowest main frequency of the stress waveform;
and calculating the turning diameter and the turning number of the spring configuration according to the first minimum characteristic length, the second minimum characteristic length and the equipment field size.
2. The method of claim 1, wherein the first minimum characteristic length and the second minimum characteristic length are each half of a spring configuration drive train corresponding to a spring.
3. The method of claim 1, wherein the spring-configured drive train cross-sectional shape is an inverted trapezoid, and the key parameters of the spring-configured drive train cross-sectional shape include a diameter of revolution of the spring configuration, a top-bottom length of the inverted trapezoid cross-section, and a spring-configured drive train cross-sectional height.
4. A method according to claim 3, characterized in that the method further comprises:
acquiring controllable stress wave waveform parameters in user demands;
according to the controllable stress wave waveform parameters and the key parameters of the section body type of the spring configuration transmission rod system, designing a body type distribution function of the shot bullet with the inverted trapezoid section along the length direction, and generating the shot bullet with the inverted trapezoid section with the body type distribution function;
and taking the waveform of the inverted trapezoid section shot bullet when exciting the low-frequency controllable impact physical simulation device as a controllable impact stress waveform corresponding to the controllable stress wave waveform parameter.
5. The method of claim 4, wherein designing a body shape distribution function of a shot bullet of an inverted trapezoidal section along a length direction according to the controllable stress wave waveform parameters and the key parameters of the body shape of the section of the spring configuration transmission rod system, and generating the shot bullet of the inverted trapezoidal section with the body shape distribution function comprises:
calculating the amplitude scaling factor of the waveform inversion rod shape according to the rotation diameter of the spring configuration, the top-bottom length of the inverted trapezoid section and the section height of the transmission rod system of the spring configuration;
according to the rotation diameter of the spring configuration and the controllable stress wave waveform parameter, calculating the phase correction time sequence of the stress wave;
and generating a body type distribution function of the shot bullet with the inverted trapezoid cross section along the length direction according to the amplitude scaling factor of the waveform inversion rod, the controllable stress wave waveform parameter and the phase correction time sequence, and generating the shot bullet with the inverted trapezoid cross section with the body type distribution function.
6. A parameter determining device for a low frequency controllable impact physical simulation device, wherein the low frequency controllable impact physical simulation device is formed by a split hopkinson bar configuration SHPB constructed by a spring-configured drive train, the device comprising:
the first acquisition module is used for acquiring the equipment field size in the usable length direction of the spring-configured transmission rod system and the lowest main frequency of the stress waveform based on the user requirements corresponding to the low-frequency controllable impact physical simulation device;
the first calculating module is used for calculating a first minimum characteristic length of an incident rod of the spring configuration transmission rod system and a second minimum characteristic length of a transmission rod according to the lowest main frequency of the stress waveform;
and the second calculation module is used for calculating the turning diameter and the turning number of the spring configuration according to the first minimum characteristic length, the second minimum characteristic length and the equipment field size.
7. The device of claim 6, wherein the spring-configured drive train cross-sectional shape is an inverted trapezoid, and the key parameters of the spring-configured drive train cross-sectional shape include a diameter of revolution of the spring configuration, a top-bottom length of the inverted trapezoid cross-section, and a spring-configured drive train cross-sectional height.
8. The apparatus of claim 7, wherein the apparatus further comprises:
the second acquisition module is used for acquiring the controllable stress wave waveform parameters in the user demand;
the generation module is used for designing a body type distribution function of the shot bullet with the inverted trapezoid cross section along the length direction according to the controllable stress wave waveform parameters and the body type key parameters of the section of the spring configuration transmission rod system, and generating the shot bullet with the inverted trapezoid cross section with the body type distribution function;
and the excitation module is used for taking the waveform of the inverted trapezoid section shot bullet when exciting the low-frequency controllable impact physical simulation device as a controllable impact stress waveform corresponding to the controllable stress wave waveform parameter.
9. An electronic device, comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-5.
10. A non-transitory computer readable storage medium storing computer instructions for causing the computer to perform the method of any one of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410147680.3A CN117686358B (en) | 2024-02-02 | 2024-02-02 | Parameter determination method and device for low-frequency controllable impact physical simulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN111665152A (en) * | 2019-08-22 | 2020-09-15 | 西北工业大学 | Material dynamic compression circulating loading device and method thereof |
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| JP6860256B1 (en) * | 2019-11-26 | 2021-04-14 | ▲広▼州大学 | Equipment for testing the impact resistance of beam column structural members |
| CN113049420A (en) * | 2021-03-30 | 2021-06-29 | 西北工业大学 | Device and method for realizing tension/compression impact fatigue test based on Hopkinson pull rod |
| CN113390734A (en) * | 2021-05-31 | 2021-09-14 | 南京理工大学 | Split Hopkinson pull rod experiment system and experiment method |
| CN114112743A (en) * | 2020-09-01 | 2022-03-01 | 西安石油大学 | Electromagnetic Hopkinson bar and stress wave generator thereof |
| CN114577640A (en) * | 2022-02-24 | 2022-06-03 | 煤炭科学研究总院有限公司 | Hopkinson dynamic experimental device for exciting controllable waveform by hydraulic servo testing machine |
| CN116818563A (en) * | 2023-06-20 | 2023-09-29 | 天津大学 | Experimental device based on hopkinson pole |
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| CN111665152A (en) * | 2019-08-22 | 2020-09-15 | 西北工业大学 | Material dynamic compression circulating loading device and method thereof |
| JP6860256B1 (en) * | 2019-11-26 | 2021-04-14 | ▲広▼州大学 | Equipment for testing the impact resistance of beam column structural members |
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| CN114112743A (en) * | 2020-09-01 | 2022-03-01 | 西安石油大学 | Electromagnetic Hopkinson bar and stress wave generator thereof |
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| CN113390734A (en) * | 2021-05-31 | 2021-09-14 | 南京理工大学 | Split Hopkinson pull rod experiment system and experiment method |
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