CN117433891A - Elastic modulus testing method and elastic modulus testing device - Google Patents

Elastic modulus testing method and elastic modulus testing device Download PDF

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Publication number
CN117433891A
CN117433891A CN202311308379.8A CN202311308379A CN117433891A CN 117433891 A CN117433891 A CN 117433891A CN 202311308379 A CN202311308379 A CN 202311308379A CN 117433891 A CN117433891 A CN 117433891A
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sample
tested
elastic modulus
imitation
measured
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武文杰
时晓蕾
关鹏
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Sungrow Power Supply Co Ltd
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Sungrow Power Supply Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The application discloses an elastic modulus testing method and an elastic modulus testing device, and belongs to the technical field of experimental testing. The method comprises the following steps: based on the material of the sample to be measured, the density rho of the sample to be measured is obtained, and the elastic modulus E of the material of the sample to be measured is obtained Imitation of The method comprises the steps of carrying out a first treatment on the surface of the Obtaining a digital model of a sample to be tested; based on density rho of sample to be measured and material elastic modulus E of sample to be measured Imitation of And the digital-analog of the sample to be tested to obtain the simulation frequency f of the sample to be tested Imitation of The method comprises the steps of carrying out a first treatment on the surface of the Obtaining actual frequency f of sample to be tested based on experiment Experiment The method comprises the steps of carrying out a first treatment on the surface of the Elastic modulus E of material based on sample to be measured Imitation of Simulation frequency f of sample to be measured Imitation of Actual frequency f of sample to be measured Experiment Obtaining the actual elastic modulus E of the sample to be tested Experiment . By combining the simulation with experimental meansThe design does not need to measure and correct for many times, saves time cost and labor cost, is simple to operate, and effectively improves the precision of the test result, thereby improving the applicability of the whole test method.

Description

Elastic modulus testing method and elastic modulus testing device
Technical Field
The application belongs to the technical field of experimental tests, and particularly relates to an elastic modulus testing method and an elastic modulus testing device.
Background
The elastic modulus is a very important parameter of the structure, the elastic modulus directly determines the structural rigidity characteristic and also determines the precision of a structural simulation result, a conventional tensile test is adopted in a common elastic modulus test method, but a special test sample is required to be specially used in a tensile test machine test method, the fluctuation range of the obtained data is large, the average value is required to be obtained through multiple times of measurement, the accuracy is low, and the error is large.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the elastic modulus testing method and the elastic modulus testing device are provided, multiple measurement and correction are not needed, time cost and labor cost are saved, meanwhile, operation is simple, and the accuracy of a testing result is effectively improved, so that the applicability of the whole testing method is improved.
In a first aspect, the present application provides a method for testing elastic modulus, the method comprising:
based on the material of the sample to be detected, the density rho of the sample to be detected is obtained, and the elastic modulus E of the material of the sample to be detected is obtained Imitation of ；
Obtaining a digital model of the sample to be tested;
based on the density rho of the sample to be detected and the elastic modulus E of the material of the sample to be detected Imitation of And the digital-analog of the sample to be tested to obtain the simulation frequency f of the sample to be tested Imitation of ；
Obtaining the actual frequency f of the sample to be tested based on experiments Experiment ；
Material elastic modulus E based on sample to be measured Imitation of Simulation frequency f of the sample to be tested Imitation of The actual frequency f of the sample to be tested Experiment Obtaining the actual elastic modulus E of the sample to be tested Experiment 。
According to the elastic modulus test method, the actual elastic modulus E of the material is realized through the design of the simulation and the experimental means Experiment Compared with the traditional tensile test, the accurate measurement of (1) does not need to be measured and corrected for multiple times, thereby savingThe time cost and the labor cost are reduced, and meanwhile, the operation is simple, and the precision of the test result is effectively improved, so that the applicability of the whole test method is improved.
According to one embodiment of the application, the actual frequency f of the sample to be measured is obtained based on experiments Experiment Comprising:
acquiring a force sound transfer function curve based on the audio information sent by the knocked sample piece to be tested;
based on the force acoustic transfer function curve, the actual frequency f of the sample to be detected is obtained Experiment 。
According to one embodiment of the present application, the audio information sent by the sample to be tested is obtained by:
freely hanging the sample to be tested;
knocking the sample to be tested;
the excited audio information is collected by a noise sensor.
According to one embodiment of the application, the elastic modulus E of the material of the sample to be tested is based on the density ρ of the sample to be tested Imitation of And the digital-analog of the sample to be tested to obtain the simulation frequency f of the sample to be tested Imitation of Comprising:
the simulation frequency f of the sample to be tested is determined by the following formula Imitation of ：
m＝ρV
Wherein k is the rigidity coefficient of the sample to be measured, m is the mass of the sample to be measured, V is the volume of the sample to be measured, S is the cross-sectional area of the sample to be measured, and L is the length of the sample to be measured.
According to one embodiment of the application, the test is based on the testModulus of elasticity E of Material of sample Imitation of Simulation frequency f of the sample to be tested Imitation of The actual frequency f of the sample to be tested Experiment Obtaining the actual elastic modulus E of the sample to be tested Experiment Comprising:
the actual elastic modulus E of the sample to be tested is determined by the following formula Experiment ：
According to one embodiment of the application, the modulus E of elasticity of the material of the sample piece to be measured is obtained Imitation of Comprising:
obtaining an elastic modulus range corresponding to the material of the sample to be detected;
determining the elastic modulus E of the material in the elastic modulus range Imitation of 。
In a second aspect, the present application provides an elastic modulus testing device comprising:
a first obtaining module, configured to obtain a density ρ of the sample to be tested based on a material of the sample to be tested, and obtain a material elastic modulus E of the sample to be tested Imitation of ；
The second acquisition module is used for acquiring the digital-analog of the sample to be detected;
a first processing module, configured to, based on the density ρ of the sample to be tested and the elastic modulus E of the material of the sample to be tested Imitation of And the digital-analog of the sample to be tested to obtain the simulation frequency f of the sample to be tested Imitation of ；
A third obtaining module for obtaining the actual frequency f of the sample to be tested based on experiments Experiment ；
A second processing module for based on the elastic modulus E of the material of the sample to be tested Imitation of Simulation frequency f of the sample to be tested Imitation of The actual frequency f of the sample to be tested Experiment Obtaining the actual elastic modulus E of the sample to be tested Experiment 。
According to the present inventionThe applied elastic modulus testing device realizes the actual elastic modulus E of the material through the design of the simulation and the experimental means Experiment Compared with the traditional tensile test, the accurate measurement of the test method does not need to be measured and corrected for multiple times, saves time cost and labor cost, is simple to operate, and effectively improves the precision of the test result, thereby improving the applicability of the whole test method.
According to one embodiment of the present application, the third obtaining module is configured to:
acquiring a force sound transfer function curve based on the audio information sent by the knocked sample to be tested; based on the force acoustic transfer function curve, the actual frequency f of the sample to be detected is obtained Experiment 。
According to one embodiment of the present application, the audio information sent by the sample to be tested may be obtained by:
freely hanging a sample to be tested; knocking a sample to be tested; the excited audio information is collected by a noise sensor.
According to one embodiment of the application, a first processing module is configured to:
the simulation frequency f of the sample to be tested is determined by the following formula Imitation of ：
m＝ρV
Wherein k is the rigidity coefficient of the sample to be measured, m is the mass of the sample to be measured, V is the volume of the sample to be measured, S is the cross-sectional area of the sample to be measured, and L is the length of the sample to be measured.
According to one embodiment of the application, a second processing module is configured to:
the actual elastic modulus E of the sample to be tested is determined by the following formula Experiment ：
According to one embodiment of the application, a first acquisition module is configured to:
obtaining an elastic modulus range corresponding to a material of a sample to be tested; determination of the elastic modulus E of a Material in the elastic modulus Range Imitation of 。
In a third aspect, the present application provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor implements the method for testing elastic modulus according to the first aspect when executing the computer program.
In a fourth aspect, the present application provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the elastic modulus testing method as described in the first aspect above.
In a fifth aspect, the present application provides a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to execute a program or instructions to implement the elastic modulus testing method according to the first aspect.
In a sixth aspect, the present application provides a computer program product comprising a computer program which, when executed by a processor, implements the elastic modulus testing method as described in the first aspect above.
Additional aspects and advantages of the application 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 application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, wherein:
FIG. 1 is a schematic flow chart of a method for testing elastic modulus according to an embodiment of the present application;
FIG. 2 is a graph of a force acoustic transfer function test of 6061 aluminum alloy material provided in an embodiment of the present application;
FIG. 3 is a schematic diagram of an elastic modulus testing device according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The elastic modulus testing method, the elastic modulus testing device, the electronic equipment and the readable storage medium provided by the embodiment of the application are described in detail below through specific embodiments and application scenes thereof with reference to the accompanying drawings.
The elastic modulus testing method can be applied to the terminal, and can be specifically executed by hardware or software in the terminal.
The terminal includes, but is not limited to, a portable communication device such as a mobile phone or tablet having a touch sensitive surface (e.g., a touch screen display and/or a touch pad). It should also be appreciated that in some embodiments, the terminal may not be a portable communication device, but rather a desktop computer having a touch-sensitive surface (e.g., a touch screen display and/or a touch pad).
In the following various embodiments, a terminal including a display and a touch sensitive surface is described. However, it should be understood that the terminal may include one or more other physical user interface devices such as a physical keyboard, mouse, and joystick.
The execution body of the elastic modulus testing method provided by the embodiment of the application may be an electronic device or a functional module or a functional entity capable of implementing the elastic modulus testing method in the electronic device, where the electronic device includes, but is not limited to, a mobile phone, a tablet computer, a camera, a wearable device, and the like, and the elastic modulus testing method provided by the embodiment of the application is described below by taking the electronic device as an execution body as an example.
The main body of the elastic modulus test method may be the above-mentioned portable communication device or desktop computer, etc., and the portable communication device or desktop computer may be equipped with workbench or other finite element software.
As shown in fig. 1, the elastic modulus test method includes: step 110, step 120, step 130, step 140, and step 150.
Step 110, based on the material of the sample to be tested, obtaining the density ρ of the sample to be tested, and obtaining the elastic modulus E of the material of the sample to be tested Imitation of 。
The sample to be measured can be processed from an original material by various technological means, and the density rho and the elastic modulus E of the original material Imitation of Can be obtained by looking up a table and the like, in the actual operation, related operators can input according to an empirical value, but the actual elastic modulus E of the sample to be measured after the processing of the original material is influenced by factors such as material composition, processing technology and the like Experiment Modulus of elasticity E of material with sample to be measured Imitation of There is a large difference, so the actual elastic modulus E of the sample to be tested is required Experiment Testing was performed.
Step 120, obtaining a digital-analog of the sample to be tested.
The digital model of the sample to be measured can be a three-dimensional digital model of the sample to be measured, which is manufactured by utilizing three-dimensional software, and the structural parameters of the sample to be measured can be obtained by obtaining the digital model of the sample to be measured.
Step 130, based on the density ρ of the sample to be tested, the elastic modulus E of the material of the sample to be tested Imitation of And the digital-analog of the sample to be tested to obtain the simulation frequency f of the sample to be tested Imitation of 。
It will be appreciated that when a structure is subjected to external excitation to produce motion, natural vibrations occur at a particular frequency, referred to as the natural frequency of the structure, typically a structure having a plurality of natural frequencies. The natural frequency is not related to the external excitation, and is an inherent property of the structure, in other words, the natural frequency of the structure exists regardless of the presence or absence of the external excitation, but when the external excitation is performed, the structure generates a vibration response according to the natural frequency.
Based on the principle, the density ρ of the sample to be detected and the material elastic modulus E of the sample to be detected can be based on the shape of the structure and the constraint boundary condition Imitation of And structural parameters of the sample to be tested, and simulation frequency f of the sample to be tested Imitation of And (5) performing calculation.
Step 140, obtaining the actual frequency f of the sample to be tested based on the experiment Experiment 。
Obtaining the actual frequency f of the sample to be tested Experiment The experimental methods of (2) may include, but are not limited to, tapping, start-stop, and frequency modulation methods, wherein the tapping method is applied to a single component; start-stop and frequency modulation methods are suitable for use in an assembled operable device, e.g., in some embodiments, to obtain the actual frequency f of a sample to be measured Experiment The experimental method of (2) is a knocking method.
Step 150, material elastic modulus E based on sample to be tested Imitation of Simulation frequency f of sample to be measured Imitation of Actual frequency f of sample to be measured Experiment Obtaining the actual elastic modulus E of the sample to be tested Experiment 。
In particular, due toIn the case of the shape of the structure and the constraint boundary conditions, the natural frequency depends on the structural rigidity of the material, which depends on the elastic modulus, so the elastic modulus E of the material of the sample to be measured Imitation of Simulation frequency f of sample to be measured Imitation of Actual frequency f of sample to be measured Experiment Actual elastic modulus E of sample to be measured Experiment The actual elastic modulus E of the sample to be measured can be calculated according to the proportional relation Experiment 。
In actual implementation, the related operators can input the material elastic modulus E of the sample to be tested into the software according to the experience value Imitation of And density ρ of the sample to be measured, and digital-analog of the sample to be measured can be input into the software based on the obtained elastic modulus E of the material Imitation of The density rho of the sample to be measured and the digital-analog of the sample to be measured, the software can calculate the simulation frequency f of the sample to be measured Imitation of And the software can obtain the actual frequency f of the sample to be tested based on experiments Experiment Finally, the elastic modulus E of the material of the sample to be tested can be obtained Imitation of Simulation frequency f of sample to be measured Imitation of Actual frequency f of sample to be measured Experiment Comparing, and correcting to obtain the actual elastic modulus E of the sample to be tested Experiment 。
According to the elastic modulus testing method provided by the embodiment of the application, through the design of combining the simulation with the experimental means, the actual elastic modulus E of the material is realized Experiment Compared with the traditional tensile test, the accurate measurement of the test method does not need to be measured and corrected for multiple times, saves time cost and labor cost, is simple to operate, and effectively improves the precision of the test result, thereby improving the applicability of the whole test method.
In some embodiments, as shown in FIG. 2, step 140, the actual frequency f of the sample to be measured is obtained based on experiments Experiment May include:
acquiring a force sound transfer function curve based on the audio information sent by the knocked sample to be tested; based on the force acoustic transfer function curve, the actual frequency f of the sample to be detected is obtained Experiment 。
Referring to fig. 2, fig. 2 is a force acoustic transfer function test curve taking 6061 aluminum alloy material as an example, wherein the abscissa in fig. 2 is the vibration frequency of the 6061 aluminum alloy material after being knocked, and the ordinate in fig. 2 is the vibration amplitude of the 6061 aluminum alloy material after being knocked, that is, the decibel value extracted from the audio information sent by the sample to be tested.
In practical implementation, as shown in fig. 2, taking a sample to be measured as a 6061 aluminum alloy material as an example, the natural frequency obtained by the sample to be measured in a force acoustic transfer function curve and the material elastic modulus E of the sample to be measured Imitation of Simulation frequency f of sample to be tested Imitation of By contrast, the specific value of the elastic modulus of the 6061 aluminum alloy obtained by correction is 69GPa, the following table 1 is simulated by using the corrected elastic modulus, and the error can be controlled below 1% compared with standard data of experimental test results.
TABLE 1
According to the elastic modulus testing method provided by the embodiment of the application, the actual frequency f of the sample to be tested is used Experiment Logic design of the acquisition process of (a) realizes that the actual frequency f of a sample to be detected is extracted by forming a force acoustic transfer function curve through noise acquisition Experiment The accuracy of the extracted data is guaranteed, and meanwhile, the simplicity and the practicability of the whole process are improved.
In some embodiments, the emitted audio information of the sample to be measured may be obtained by:
freely hanging a sample to be tested; knocking a sample to be tested; the excited audio information is collected by a noise sensor.
The sample to be measured may be metal or plastic, without limitation.
The means for striking the sample to be measured may include, but is not limited to, a force hammer, a steel bar, or other rigid structure, such as, in some embodiments, a force hammer.
In actual execution, the force hammer or other rigid structures can be utilized to carry out clean and clean clicking on the sample to be tested, the sample to be tested can vibrate freely through clicking, the noise sensor can collect noise emitted by the sample to be tested through free vibration, the sample to be tested can be knocked for multiple times, and therefore a few sections of obvious and clean waveform sections can be picked later to be analyzed.
According to the elastic modulus testing method, through the logic design of the audio information acquisition process of the sample to be tested, the actual frequency f of the sample to be tested is extracted by acquiring the audio information through a knocking method Experiment The use of large overweight detection equipment is avoided, the structure size of the test sample is not limited, the simulation and test standard alignment work can be completed by the 3D digital model with the real sample and the sample, and the simplicity and the practicability are improved.
In some embodiments, step 130 is based on the density ρ of the sample to be measured, the modulus of elasticity E of the material of the sample to be measured Imitation of And the digital-analog of the sample to be tested to obtain the simulation frequency f of the sample to be tested Imitation of May include:
the simulation frequency f of the sample to be tested is determined by the following formula Imitation of ：
m＝ρV
Wherein k is the rigidity coefficient of the sample to be measured, m is the mass of the sample to be measured, V is the volume of the sample to be measured, S is the cross-sectional area of the sample to be measured, and L is the length of the sample to be measured.
In this embodiment, the operator can input the modulus of elasticity E of the material of the sample to be measured Imitation of The density rho of the sample to be measured and the digital-analog of the sample to be measured are input into the software, and based on the obtained digital-analog of the sample to be measured, the software can obtain the volume V of the sample to be measured and the cross section of the sample to be measuredThe product S and the length L of the sample to be measured can be calculated to obtain the mass m of the sample to be measured based on the density rho of the sample to be measured and the volume V of the sample to be measured, and the elastic modulus E of the material based on the sample to be measured Imitation of The rigidity coefficient k of the sample to be measured can be calculated by the cross-sectional area S of the sample to be measured and the length L of the sample to be measured, and finally the simulation frequency f of the sample to be measured can be calculated based on the mass m of the sample to be measured and the rigidity coefficient k of the sample to be measured Imitation of 。
According to the elastic modulus testing method provided by the embodiment of the application, the rigidity coefficient k of the sample to be tested and the material elastic modulus E of the sample to be tested are obtained by applying a simple physical formula Imitation of In connection, the simulation frequency f of the sample to be tested is determined Imitation of For determining the actual elastic modulus E of the sample to be measured at a later stage Experiment The data support is provided, the free mode is calculated, no boundary condition is required to be set in the simulation, and the calculation process is effectively simplified.
In some embodiments, step 150 is based on the modulus of elasticity E of the material of the sample to be tested Imitation of Simulation frequency f of sample to be measured Imitation of Actual frequency f of sample to be measured Experiment Obtaining the actual elastic modulus E of the sample to be tested Experiment May include:
the actual elastic modulus E of the sample to be tested is determined by the following formula Experiment ：
In the case of a structure whose shape and constraint boundary conditions are determined, the natural frequency depends on the structural stiffness, which in turn depends on the modulus of elasticity.
By the following formula:
analyzing to obtain the elastic modulus E of the material of the sample to be tested Imitation of Simulation frequency f of sample to be measured Imitation of Actual frequency f of sample to be measured Experiment Actual elastic modulus E of sample to be measured Experiment The actual elastic modulus E of the sample to be detected can be deduced according to the proportional relation Experiment Based on the obtained material elastic modulus E of the sample to be tested Imitation of Simulation frequency f of sample to be measured Imitation of Actual frequency f of sample to be measured Experiment Substituting the modulus into a formula to calculate and obtain the actual elastic modulus E of the sample to be measured Experiment 。
According to the elastic modulus testing method provided by the embodiment of the application, the actual elastic modulus E is deduced by utilizing the proportional relation between the natural frequency and the elastic modulus Experiment Meanwhile, the high feasibility and the accuracy of the method are verified through experimental and simulation means, and the error rate is reduced to the greatest extent.
In some embodiments, step 110, the elastic modulus E of the material of the sample to be measured is obtained Imitation of May include:
obtaining an elastic modulus range corresponding to a material of a sample to be tested; determination of the elastic modulus E of a Material in the elastic modulus Range Imitation of 。
It can be understood that the modulus of elasticity E of the material of the sample to be tested, which needs to be input in the software Imitation of The elastic modulus is affected by the factors of the material composition and the processing technology, so that the standard in the national standard is a rough numerical range, and related operators can select a numerical value according to experience in the elastic modulus range corresponding to the material and then correct based on the selected numerical value.
For example, taking the sample to be tested as a steel material, the elastic modulus of steel specified in GB national standard is 190-210 Gpa, at this time, the relevant operators can input 200Gpa, and then correct 200Gpa by using a simulation combination experiment mode to obtain the final actual elastic modulus E of the sample to be tested Experiment 。
For another example, taking the sample to be measured as an aluminum alloy material as an example, GB national standard specifies an elastic mold of aluminum alloyThe measurement is 65-73 Gpa, at this time, the related operators can input 68Gpa, and then correct 68Gpa by using a simulation combination experiment mode to obtain the final actual elastic modulus E of the sample to be tested Experiment 。
According to the elastic modulus testing method provided by the embodiment of the application, the elastic modulus E of the material of the sample to be tested is obtained Imitation of The logic design of the acquisition process of (2) selects the elastic modulus E of the material within the elastic modulus range corresponding to the material of the sample to be detected Imitation of Specific values of (a) and obtaining the actual elastic modulus E by means of simulation and experiment Experiment The elastic modulus E of the secondary material is improved Imitation of To finally confirm the actual elastic modulus E Experiment The accuracy of the calculation further reduces the error rate of the resulting data.
According to the elastic modulus testing method provided by the embodiment of the application, the execution main body can be an elastic modulus testing device. In the embodiment of the application, an elastic modulus test device executes an elastic modulus test method as an example, and the elastic modulus test device provided in the embodiment of the application is described.
The application also discloses an elastic modulus testing device.
As shown in fig. 3, the elastic modulus test device includes: a first acquisition module 210, a second acquisition module 220, a first processing module 230, a third acquisition module 240, and a second processing module 250.
A first obtaining module 210, configured to obtain a density ρ of the sample to be tested based on a material of the sample to be tested, and obtain a material elastic modulus E of the sample to be tested Imitation of ；
A second obtaining module 220, configured to obtain a digital-analog of the sample to be tested;
a first processing module 230 for processing the sample based on the density ρ of the sample to be tested and the elastic modulus E of the material of the sample to be tested Imitation of And the digital-analog of the sample to be tested to obtain the simulation frequency f of the sample to be tested Imitation of ；
A third obtaining module 240 for obtaining the actual frequency f of the sample to be tested based on the experiment Experiment ；
A second processing module 250 for based on the material elasticity of the sample to be testedModulus E Imitation of Simulation frequency f of sample to be measured Imitation of Actual frequency f of sample to be measured Experiment Obtaining the actual elastic modulus E of the sample to be tested Experiment 。
According to the elastic modulus testing device provided by the embodiment of the application, through the design of combining the simulation and the experimental means, the actual elastic modulus E of the material is realized Experiment Compared with the traditional tensile test, the accurate measurement of the test method does not need to be measured and corrected for multiple times, saves time cost and labor cost, is simple to operate, and effectively improves the precision of the test result, thereby improving the applicability of the whole test method.
In some embodiments, as shown in fig. 2, the third acquisition module 240 may be configured to:
acquiring a force sound transfer function curve based on the audio information sent by the knocked sample to be tested; based on the force acoustic transfer function curve, the actual frequency f of the sample to be detected is obtained Experiment 。
According to the elastic modulus testing device provided by the embodiment of the application, the actual frequency f of the sample to be tested is used Experiment Logic design of the acquisition process of (a) realizes that the actual frequency f of a sample to be detected is extracted by forming a force acoustic transfer function curve through noise acquisition Experiment The accuracy of the extracted data is guaranteed, and meanwhile, the simplicity and the practicability of the whole process are improved.
In some embodiments, the emitted audio information of the sample to be measured may be obtained by:
freely hanging a sample to be tested; knocking a sample to be tested; the excited audio information is collected by a noise sensor.
According to the elastic modulus testing device, through the logic design of the audio information acquisition process of the sample to be tested, the actual frequency f of the sample to be tested is extracted by acquiring the audio information through a knocking method Experiment The use of large overweight detection equipment is avoided, the structure size of the test sample is not limited, the simulation and test standard alignment work can be completed by the 3D digital model with the real sample and the sample, and the simplicity and the practicability are improved.
In some embodiments, the first processing module 230 may be configured to:
the simulation frequency f of the sample to be tested is determined by the following formula Imitation of ：
m＝ρV
Wherein k is the rigidity coefficient of the sample to be measured, m is the mass of the sample to be measured, V is the volume of the sample to be measured, S is the cross-sectional area of the sample to be measured, and L is the length of the sample to be measured.
According to the elastic modulus testing device provided by the embodiment of the application, the rigidity coefficient k of the sample to be tested and the material elastic modulus E of the sample to be tested are obtained by applying a simple physical formula Imitation of In connection, the simulation frequency f of the sample to be tested is determined Imitation of For determining the actual elastic modulus E of the sample to be measured at a later stage Experiment The data support is provided, the free mode is calculated, no boundary condition is required to be set in the simulation, and the calculation process is effectively simplified.
In some embodiments, the second processing module 250 may be configured to:
the actual elastic modulus E of the sample to be tested is determined by the following formula Experiment ：
The elastic modulus testing device provided by the embodiment of the application derives the actual elastic modulus E by utilizing the proportional relation between the natural frequency and the elastic modulus Experiment Meanwhile, the high feasibility and the accuracy of the method are verified through experimental and simulation means, and the error rate is reduced to the greatest extent.
In some embodiments, the first acquisition module 210 may be configured to:
obtaining an elastic modulus range corresponding to a material of a sample to be tested; determination of the elastic modulus E of a Material in the elastic modulus Range Imitation of 。
According to the elastic modulus testing device provided by the embodiment of the application, the elastic modulus E of the material of the sample to be tested is obtained Imitation of The logic design of the acquisition process of (2) selects the elastic modulus E of the material within the elastic modulus range corresponding to the material of the sample to be detected Imitation of Specific values of (a) and obtaining the actual elastic modulus E by means of simulation and experiment Experiment The elastic modulus E of the secondary material is improved Imitation of To finally confirm the actual elastic modulus E Experiment The accuracy of the calculation further reduces the error rate of the resulting data.
According to the elastic modulus testing method provided by the embodiment of the application, the execution body can be an elastic modulus testing device. In the embodiment of the application, an elastic modulus test device executes an elastic modulus test method as an example, and the elastic modulus test device provided in the embodiment of the application is described. The apparatus may be an electronic device or may be a component in an electronic device, such as an integrated circuit or chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, the electronic device may be a mobile phone, tablet computer, notebook computer, palm computer, vehicle-mounted electronic device, mobile internet appliance (Mobile Internet Device, MID), augmented reality (augmented reality, AR)/Virtual Reality (VR) device, robot, wearable device, ultra-mobile personal computer, UMPC, netbook or personal digital assistant (personal digital assistant, PDA), etc., but may also be a server, network attached storage (Network Attached Storage, NAS), personal computer (personal computer, PC), television (TV), teller machine or self-service machine, etc., and the embodiments of the present application are not limited in particular.
According to the elastic modulus testing method provided by the embodiment of the application, the execution body can be an elastic modulus testing device. In the embodiment of the application, an elastic modulus test device executes an elastic modulus test method as an example, and the elastic modulus test device provided in the embodiment of the application is described. The device may be a device having an operating system. The operating system may be an Android operating system, an IOS operating system, or other possible operating systems, which is not specifically limited in the embodiments of the present application.
According to the elastic modulus testing method provided by the embodiment of the application, the execution main body can be an elastic modulus testing device. In the embodiment of the application, an elastic modulus test device executes an elastic modulus test method as an example, and the elastic modulus test device provided in the embodiment of the application is described. The apparatus is capable of implementing each process implemented by the method embodiment of fig. 1, and in order to avoid repetition, a description is omitted here.
In some embodiments, as shown in fig. 4, the embodiment of the present application further provides an electronic device 800, including a processor 801, a memory 802, and a computer program stored in the memory 802 and capable of running on the processor 801, where the program when executed by the processor 801 implements the respective processes of the embodiment of the elastic modulus testing method, and the same technical effects can be achieved, and for avoiding repetition, a description is omitted herein.
The electronic device in the embodiment of the application includes the mobile electronic device and the non-mobile electronic device described above.
The embodiment of the application further provides a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements each process of the embodiment of the elastic modulus testing method, and can achieve the same technical effect, so that repetition is avoided, and no further description is given here.
Wherein the processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.
Embodiments of the present application also provide a computer program product comprising a computer program which, when executed by a processor, implements the above-described elastic modulus testing method.
Wherein the processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.
The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running a program or an instruction, implementing each process of the embodiment of the elastic modulus testing method, and achieving the same technical effect, so as to avoid repetition, and no redundant description is provided herein.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, chip systems, or system-on-chip chips, etc.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the methods described in the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative 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 application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A method for testing elastic modulus, comprising:
based on the material of the sample to be measured, the density rho of the sample to be measured is obtained, and the elastic modulus E of the material of the sample to be measured is obtained Imitation of ；
Obtaining a digital model of the sample to be tested;
based on the density rho of the sample to be detected and the elastic modulus E of the material of the sample to be detected Imitation of And the digital-analog of the sample to be tested to obtain the simulation frequency f of the sample to be tested Imitation of ；
Obtaining the actual frequency f of the sample to be tested based on experiments Experiment ；
Material elastic modulus E based on sample to be measured Imitation of Simulation frequency f of the sample to be tested Imitation of The actual frequency f of the sample to be tested Experiment Obtaining the actual elastic modulus E of the sample to be tested Experiment 。
2. The method according to claim 1, wherein the actual frequency f of the sample to be tested is obtained based on experiments Experiment Comprising:
acquiring a force sound transfer function curve based on the audio information sent by the knocked sample piece to be tested;
based on the force acoustic transfer function curve, the actual frequency f of the sample to be detected is obtained Experiment 。
3. The elastic modulus testing method according to claim 2, wherein the audio information sent out by the sample to be tested is obtained by:
freely hanging the sample to be tested;
knocking the sample to be tested;
the excited audio information is collected by a noise sensor.
4. The elastic modulus testing method according to claim 1, wherein the elastic modulus E of the material of the sample to be tested is based on the density ρ of the sample to be tested Imitation of And the digital-analog of the sample to be tested to obtain the simulation frequency f of the sample to be tested Imitation of Comprising:
the simulation frequency f of the sample to be tested is determined by the following formula Imitation of ：
m＝ρV
Wherein k is the rigidity coefficient of the sample to be measured, m is the mass of the sample to be measured, V is the volume of the sample to be measured, S is the cross-sectional area of the sample to be measured, and L is the length of the sample to be measured.
5. The method according to claim 1, wherein the elastic modulus E of the material based on the sample to be tested Imitation of Simulation frequency f of the sample to be tested Imitation of The actual frequency f of the sample to be tested Experiment Obtaining the actual elastic modulus E of the sample to be tested Experiment Comprising:
the actual elastic modulus E of the sample to be tested is determined by the following formula Experiment ：
6. The method according to claim 1, wherein the modulus of elasticity E of the material of the sample to be measured is obtained Imitation of Comprising:
obtaining an elastic modulus range corresponding to the material of the sample to be detected;
in the elastic modulus rangeDetermining the elastic modulus E of the material Imitation of 。
7. An elastic modulus testing device, comprising:
a first obtaining module, configured to obtain a density ρ of a sample to be tested based on a material of the sample to be tested, and obtain a material elastic modulus E of the sample to be tested Imitation of ；
The second acquisition module is used for acquiring the digital-analog of the sample to be detected;
a first processing module, configured to, based on the density ρ of the sample to be tested and the elastic modulus E of the material of the sample to be tested Imitation of And the digital-analog of the sample to be tested to obtain the simulation frequency f of the sample to be tested Imitation of ；
A third obtaining module for obtaining the actual frequency f of the sample to be tested based on experiments Experiment ；
A second processing module for based on the elastic modulus E of the material of the sample to be tested Imitation of Simulation frequency f of the sample to be tested Imitation of The actual frequency f of the sample to be tested Experiment Obtaining the actual elastic modulus E of the sample to be tested Experiment 。
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the elastic modulus testing method according to any of claims 1-6 when the program is executed by the processor.
9. A non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor implements the elastic modulus testing method according to any of claims 1-6.
10. A computer program product comprising a computer program, characterized in that the computer program, when executed by a processor, implements the elastic modulus testing method according to any of claims 1-6.
CN202311308379.8A 2023-10-09 2023-10-09 Elastic modulus testing method and elastic modulus testing device Pending CN117433891A (en)

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