Material friction abnormal sound grade evaluation method, device and equipment and storage medium

Abstract

The invention relates to the field of automobile material performance evaluation, and discloses a material friction abnormal sound grade evaluation method, device and equipment and a storage medium, and the method comprises the steps: obtaining friction test data when a first material and a second material are pressed to perform relative motion; the friction test data comprises a stick-slip pulse rate, stick-slip release energy and a maximum acceleration value of the second material when friction abnormal sound is generated; determining an acceleration influence level according to the maximum acceleration value; determining a stick-slip pulse influence grade according to the stick-slip pulse rate; determining a release energy influence level according to the stick-slip release energy; and determining the friction abnormal sound grade between the first material and the second material according to the stick-slip pulse influence grade, the release energy influence grade and the acceleration influence grade. The friction abnormal sound grade obtained by the method can provide reference for engineers to perform material type selection so as to avoid the friction abnormal sound problem occurring after mass production.

Description

Technical Field

[0001] The present invention relates to the field of automobile material performance evaluation, and in particular to a material friction noise level evaluation method, device, computer equipment and storage medium. Background Art

[0002] A car is a combination of various automotive materials. Under the action of external forces, different automotive materials may produce relative movement when used together, which may lead to abnormal friction noise. The surface of automotive materials is usually treated with special processes, such as special grain treatment, chrome plating, and leather wrapping. There is a risk of abnormal friction noise when different materials or materials with special surface treatment processes are used together. The identification of such risks is currently only determined by the experience and judgment of engineers, which is too subjective and not very reliable. The risk of abnormal friction noise cannot be effectively avoided during the automobile design stage. After the mass production of automobiles, if such abnormal friction noise problem is found, there is no remedial measure to eliminate the abnormal noise problem. Although an emergency solution of adding felt to the contact surface of the two materials to eliminate the abnormal friction noise can be adopted. However, this solution affects the appearance of the vehicle, and the problem of abnormal friction noise will reappear after the felt is worn.

[0003] Therefore, it is necessary to find a method that can predict the level of friction noise between two different materials to reduce the risk of friction noise between different materials. Summary of the invention

[0004] Based on this, it is necessary to provide a material friction noise level evaluation method, device, computer equipment and storage medium to address the above technical problems in order to predict the friction noise level between two different materials.

[0005] A method for evaluating the level of abnormal friction noise of a material, comprising:

[0006] Obtaining friction test data when the first material and the second material undergo relative motion under pressure; the friction test data includes a stick-slip pulse rate, a stick-slip release energy, and a maximum acceleration value of the second material when abnormal friction noise is generated;

[0007] determining an acceleration impact level according to the maximum acceleration value;

[0008] determining a stick-slip pulse impact level according to the stick-slip pulse rate;

[0009] determining a release energy impact level according to the stick-slip release energy;

[0010] The friction noise level between the first material and the second material is determined according to the stick-slip pulse impact level, the released energy impact level, and the acceleration impact level.

[0011] A material friction noise level assessment device, comprising:

[0012] A test data acquisition module is used to acquire friction test data when the first material and the second material undergo relative motion under pressure; the friction test data includes a stick-slip pulse rate, a stick-slip release energy, and a maximum acceleration value of the second material when abnormal friction noise is generated;

[0013] An acceleration level module, used to determine an acceleration impact level according to the maximum acceleration value;

[0014] A pulse rate level module, used to determine a stick-slip pulse impact level according to the stick-slip pulse rate;

[0015] An energy level module, used to determine a release energy impact level according to the stick-slip release energy;

[0016] The friction noise level module is used to determine the friction noise level between the first material and the second material according to the stick-slip pulse impact level, the release energy impact level and the acceleration impact level.

[0017] A computer device comprises a memory, a processor and computer-readable instructions stored in the memory and executable on the processor, wherein the processor implements the above-mentioned material friction noise level assessment method when executing the computer-readable instructions.

[0018] One or more readable storage media storing computer-readable instructions, when the computer-readable instructions are executed by one or more processors, enable the one or more processors to execute the material friction noise level evaluation method as described above.

[0019] The above-mentioned material friction noise level assessment method, device, computer equipment and storage medium respectively calculate the stick-slip pulse impact level, the release energy impact level and the acceleration impact level, and generate the friction noise level between the first material and the second material by combining the three impact levels. The friction noise level provides a reference for engineers to select materials to avoid the friction noise problem after mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0021] Figure 1 1 is a schematic diagram of a process of a method for evaluating the level of abnormal noise caused by material friction in one embodiment of the present invention;

[0022] Figure 2 It is a simple device for performing friction test in one embodiment of the present invention;

[0023] Figure 3 is an acceleration curve generated based on the original acceleration data in one embodiment of the present invention;

[0024] Figure 4 In one embodiment of the present invention Figure 3 Amplified acceleration curve;

[0025] Figure 5 is a graph showing the relationship between the friction influence level and the maximum acceleration value in one embodiment of the present invention;

[0026] Figure 6 is a graph showing the relationship between the friction impact level and the stick-slip pulse rate in one embodiment of the present invention;

[0027] Figure 7 is a graph showing the relationship between the friction impact level and the stick-slip release energy in one embodiment of the present invention;

[0028] Figure 8 2 is a schematic diagram of a structure of a material friction noise level assessment device according to an embodiment of the present invention;

[0029] Fig. 9 is a schematic diagram of a computer device in one embodiment of the present invention. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In one embodiment, if Figure 1 As shown, a method for evaluating the level of abnormal noise caused by friction of materials is provided, comprising the following steps S10 to S50.

[0032] S10, obtaining friction test data when the first material and the second material undergo relative motion under pressure; the friction test data includes a stick-slip pulse rate, a stick-slip release energy, and a maximum acceleration value of the second material when abnormal friction noise is generated.

[0033] It is understandable that the material friction noise level assessment method provided in this embodiment is used to assess the friction noise level when the first material and the second material undergo relative motion under pressure. The first material and the second material undergo relative motion under pressure and produce stick-slip phenomenon, thereby generating friction noise.

[0034] In one example, if Figure 2 As shown, Figure 2 It is a simple device for friction testing. Among them, the first material 03 is bonded to the test component 01, the second material 04 is bonded to the test component 02, and the acceleration sensor 05 is installed on the test component 02. A certain positive pressure F0 is loaded between the test component 01 and the test component 02 to ensure that the test material 03 and the test material 04 are in contact with the same positive pressure. The value range of F0 should cover a variety of scenarios when the material contact matching is used to ensure the comprehensiveness and effectiveness of the material friction test. The general value of F0 is 5N, 10N, 15N, 20N, 25N, etc.

[0035] When conducting the friction test, the second component 02 is stationary relative to the ground, the first component 01 reciprocates at a certain speed v0, the one-way motion time is t0, and the relative displacement between the first material 03 and the second material 04 is S0:

[0036] S0=v0·t0

[0037] During the material friction test, the movement speed v0 needs to be controlled. The friction characteristics of the two materials at different relative movement speeds are also different. The relative movement speed is generally taken as 1mm / s, 2mm / s, 5mm / s, 10mm / s, etc.

[0038] The acceleration of the second component 02, that is, the acceleration of the second material 04, is collected by the sensor. After the acceleration is collected for a period of time, friction test data can be generated according to the acceleration. The friction test data includes stick-slip pulse rate, stick-slip release energy, and the maximum acceleration value of the second material when the friction noise is generated.

[0039] Optionally, step S10, i.e., obtaining friction test data between the first material and the second material, includes:

[0040] S101, obtaining original acceleration data of the second material;

[0041] S102, generating an acceleration curve according to the original acceleration data;

[0042] S103: Determine the maximum acceleration value according to the acceleration curve.

[0043] Understandably, the original acceleration data of the second material can be obtained, and the acceleration curve can be generated according to the original acceleration data. Figure 3 As shown, Figure 3 It is an acceleration curve generated based on the original acceleration data. The ordinate of the acceleration curve is acceleration and the abscissa is time.

[0044] Can Figure 3 Zoom in and get Figure 4 . Figure 4 is the acceleration curve after amplification. Figure 4 As shown in the figure, one cycle of acceleration change includes an acceleration peak and a trough. One cycle of acceleration change represents a stick-slip phenomenon. The acceleration is a(t), and the maximum acceleration value is a max is the maximum value of acceleration a(t), that is:

[0045] a max =max[a(t)]

[0046] This embodiment obtains the maximum acceleration value by analyzing the original acceleration data, and the maximum acceleration value is related to the level of abnormal friction noise.

[0047] Optionally, step S10, i.e., obtaining friction test data between the first material and the second material, further includes:

[0048] S104, obtaining the one-way motion displacement of the first material and the original acceleration data of the second material;

[0049] S105, determining the number of acceleration peaks of the second material when the first material performs a one-way motion according to the original acceleration data;

[0050] S106. Determine the stick-slip pulse rate according to the one-way motion displacement and the number of acceleration peaks.

[0051] It can be understood that the first component 01 moves relative to the second component 02, the one-way movement time is t0, the one-way movement displacement is S0, and the number of peaks of acceleration during the one-way movement is N, that is, the number of times the stick-slip phenomenon occurs. The number of times the stick-slip phenomenon occurs within a unit distance can be defined as the stick-slip pulse rate, and the stick-slip pulse rate (unit: 1 / mm) is expressed as:

[0052]

[0053] In this embodiment, the stick-slip pulse rate is obtained by analyzing the original acceleration data and the one-way motion displacement of the first material. The stick-slip pulse rate is related to the level of friction noise.

[0054] Optionally, step S10, i.e., obtaining friction test data between the first material and the second material, further includes:

[0055] S107, obtaining the one-way motion duration of the first material and the original acceleration data of the second material;

[0056] S108, extracting one-way acceleration data from the original acceleration data;

[0057] S109: Determine the stick-slip release energy according to the one-way motion duration and the one-way acceleration data.

[0058] It can be understood that stick-slip release energy refers to the energy released during a one-way relative motion, represented by e. According to the kinetic energy expression By integrating and squaring the acceleration a(t), we can get the stick-slip release energy:

[0059] e=[∫a(t)dt] 2

[0060] This embodiment obtains stick-slip release energy by analyzing the one-way motion duration of the first material and the original acceleration data of the second material. The stick-slip release energy is related to the level of friction noise.

[0061] S20. Determine an acceleration impact level according to the maximum acceleration value.

[0062] Understandably, the friction noise level can be obtained by evaluating the friction noise using the subjective evaluation rules of the automobile industry. Through a large number of tests, the first correlation between the friction noise level and the maximum acceleration value can be analyzed. The maximum acceleration value can be processed according to this first correlation to obtain the acceleration impact level. The acceleration impact level can be used to generate the friction noise level in combination with other impact levels, thereby reducing subjective evaluation tests and saving test costs and time.

[0063] Optionally, step S20, i.e., determining the acceleration impact level according to the maximum acceleration value, includes:

[0064] S201, determining the acceleration interval in which the maximum acceleration value is located;

[0065] S202: Determine a level corresponding to the acceleration interval as the acceleration impact level.

[0066] Understandably, a plurality of acceleration intervals may be set, and each acceleration interval corresponds to a corresponding acceleration impact level.

[0067] In some examples, such as Figure 5 As shown, Figure 5 This is the relationship between the friction impact level and the maximum acceleration value. Figure 5 It can be seen that the maximum acceleration value a max The distribution range of increases with the increase of the friction noise level (acceleration). Through numerical fitting, a positive proportional function between the maximum acceleration value and the friction noise level (acceleration) can be obtained:

[0068]

[0069] b1 is a constant, which is calculated based on the statistical data of the maximum acceleration value;

[0070] It is the friction noise level (acceleration), which is also the acceleration impact level.

[0071] In the n friction noise tests, the maximum acceleration values ​​are arranged from small to large as follows: a1 <a2<···<a n For every increase in the level of friction noise, the corresponding maximum acceleration speed increases by approximately: but:

[0072] Acceleration interval A1 = [0, a1);

[0073] …;

[0074] Acceleration range

[0075] Therefore, in the stick-slip test, if the maximum acceleration a max ∈A k ,but,

[0076]

[0077] when a max ≥a n hour,

[0078] In this embodiment, a plurality of acceleration intervals are set, and the corresponding acceleration impact level is found according to the acceleration interval in which the maximum acceleration value is located, thereby greatly simplifying the calculation process of the acceleration impact level.

[0079] S30: Determine a stick-slip pulse impact level according to the stick-slip pulse rate.

[0080] Understandably, the friction noise level can be obtained by evaluating the friction noise using the subjective evaluation rules of the automobile industry. Through a large number of tests, the second correlation between the friction noise level and the stick-slip pulse rate can be analyzed. The stick-slip pulse rate can be processed according to this second correlation to obtain the stick-slip pulse impact level. The stick-slip pulse impact level can be used to generate the friction noise level in combination with other impact levels, thereby reducing subjective evaluation tests and saving test costs and time.

[0081] Optionally, step S30, i.e., determining the stick-slip pulse impact level according to the stick-slip pulse rate, includes:

[0082] S301, determining the pulse rate interval in which the stick-slip pulse rate is located;

[0083] S302: Determine the level corresponding to the pulse rate interval as the stick-slip pulse impact level.

[0084] Understandably, a plurality of pulse rate intervals may be set, and each pulse rate interval corresponds to a corresponding stick-slip pulse influence level.

[0085] In one example, if Figure 6 As shown, Figure 6 is the relationship between the friction impact level and the stick-slip pulse rate. Figure 6 It can be seen that the distribution range of the stick-slip pulse rate i increases with the increase of the friction noise level (stick-slip pulse rate). Through numerical fitting, the linear function between the stick-slip pulse rate i and the friction noise level (stick-slip pulse rate) can be obtained:

[0086]

[0087] b2 is the proportionality constant, which is calculated based on the stick-slip pulse rate statistics;

[0088] It is the friction noise level (stick-slip pulse rate), which is also the stick-slip pulse impact level.

[0089] In n tests, the stick-slip pulse rates are arranged from small to large as follows: i1 <i2<···i n .

[0090] For every increase in the friction noise level, the corresponding stick-slip pulse rate increases by approximately: but:

[0091] Interval I1 = [0, i1);

[0092] …;

[0093] Interval

[0094] That is, if the stick-slip pulse rate i∈I k ,but,

[0095]

[0096] When i≥i n hour,

[0097] In this embodiment, a plurality of pulse rate intervals are set, and the corresponding stick-slip pulse influence level is found according to the pulse rate interval in which the stick-slip pulse rate is located, thereby greatly simplifying the calculation process of the stick-slip pulse influence level.

[0098] S40: Determine a release energy impact level according to the stick-slip release energy.

[0099] Understandably, the friction noise level can be obtained by evaluating the friction noise using the subjective evaluation rules of the automobile industry. Through a large number of tests, the third correlation between the friction noise level and the stick-slip release energy can be analyzed. The stick-slip release energy can be processed according to this third correlation to obtain the release energy impact level. The release energy impact level can be used to generate the friction noise level in combination with other impact levels, thereby reducing subjective evaluation tests and saving test costs and time.

[0100] Optionally, step S40, i.e., determining a release energy impact level according to the stick-slip release energy, includes:

[0101] S401, determining an energy interval in which the stick-slip release energy is located;

[0102] S402: Determine the level corresponding to the energy interval as the released energy impact level.

[0103] Understandably, a plurality of energy intervals may be set, and each energy interval corresponds to a corresponding release energy impact level.

[0104] In one example, if Figure 7 As shown, Figure 7 This is a graph showing the relationship between the friction impact level and the stick-slip release energy. Figure 6 It can be seen that the distribution range of stick-slip release energy e increases with the increase of friction noise level (energy). Through numerical fitting, the quadratic function between stick-slip release energy e and friction noise level (energy) can be obtained:

[0105]

[0106] b3 is the proportionality constant, which is calculated based on the statistical data of released energy.

[0107] It is the square of the friction noise level (energy), that is, the square of the released energy impact level.

[0108] When k is a natural number less than 10 and k∈[1,10], but:

[0109]

[0110] e 10 -e1=b3·(e 10 -e9)+b3·(e9-e8)+…+b3·(e2-e1)=99b2;

[0111] thus,

[0112] In a large number of n experiments, the released energy during the relative motion is arranged from small to large as follows:

[0113] e1 <e2<···e n .

[0114] Interval E1 = [0, e1).

[0115] Let k = m + 2,

[0116] Interval

[0117] Among them, m=0,1,2,…,8; then k=2,3,4,…,9,10.

[0118] When the energy released in the stick-slip test is e∈E k hour,

[0119] When e≥e n hour,

[0120] In this embodiment, a plurality of energy intervals are set, and the corresponding release energy impact level is found according to the energy interval where the stick-slip release energy is located, thereby greatly simplifying the calculation process of the release energy impact level.

[0121] S50: determining a friction noise level between the first material and the second material according to the stick-slip pulse impact level, the released energy impact level, and the acceleration impact level.

[0122] It can be understood that after the stick-slip pulse impact level, the released energy impact level and the acceleration impact level are obtained, the friction noise level between the first material and the second material can be calculated.

[0123] In an application example, the friction noise level is divided into 10 levels. When two materials of levels 1 to 3 are matched, the risk of friction noise is low and they can be matched; when two materials of levels 4 to 5 are matched, friction noise may occur and they can be matched conditionally; when two materials of levels 6 to 10 are matched, there is a high risk of friction noise and their matching is restricted. This friction noise level provides a reference for engineers to select materials to avoid friction noise problems after mass production.

[0124] Optionally, step S50, i.e., determining the friction noise level between the first material and the second material according to the stick-slip pulse impact level, the release energy impact level, and the acceleration impact level, includes:

[0125] S501. Process the stick-slip pulse impact level, the release energy impact level and the acceleration impact level through a friction abnormal noise level formula to obtain the friction abnormal noise level. The friction abnormal noise level formula includes:

[0126]

[0127] Wherein, R is the friction noise level;

[0128] is the acceleration impact level;

[0129] The energy release impact level;

[0130] is the stick-slip pulse impact level.

[0131] Understandably, the calculation of R is affected by In one example, The value range of is [0,10], and the value range of R is [0,10].

[0132] In the above formula, and The weighting coefficient of is 1, The weighting coefficient is 2. The friction noise level can be obtained by weighting and averaging the three impact levels. This weighted and averaged solution method is more scientific and effective.

[0133] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0134] In one embodiment, a material friction noise level assessment device is provided, and the material friction noise level assessment device corresponds to the material friction noise level assessment method in the above embodiment. Figure 8 As shown, the material friction noise level assessment device includes a test data acquisition module 10, an acceleration level module 20, a pulse rate level module 30, an energy level module 40 and a friction noise level module 50. The functional modules are described in detail as follows:

[0135] The test data acquisition module 10 is used to acquire friction test data when the first material and the second material undergo relative motion under pressure; the friction test data includes a stick-slip pulse rate, a stick-slip release energy, and a maximum acceleration value of the second material when abnormal friction noise is generated;

[0136] An acceleration level module 20, configured to determine an acceleration impact level according to the maximum acceleration value;

[0137] A pulse rate level module 30, configured to determine a stick-slip pulse impact level according to the stick-slip pulse rate;

[0138] An energy level module 40, configured to determine a release energy impact level according to the stick-slip release energy;

[0139] The friction noise level module 50 is used to determine the friction noise level between the first material and the second material according to the stick-slip pulse impact level, the release energy impact level and the acceleration impact level.

[0140] Optionally, the test data acquisition module 10 includes:

[0141] A first data acquisition unit, used to acquire original acceleration data of the second material;

[0142] An acceleration curve generating unit, used for generating an acceleration curve according to the acceleration raw data;

[0143] The maximum acceleration determination unit is used to determine the maximum acceleration value according to the acceleration curve.

[0144] Optionally, the test data acquisition module 10 includes:

[0145] A second data acquisition unit, used to acquire the one-way motion displacement of the first material and the original acceleration data of the second material;

[0146] a peak number determining unit, used to determine the acceleration peak number of the second material when the first material performs a one-way motion according to the acceleration raw data;

[0147] The stick-slip pulse rate determining unit is used to determine the stick-slip pulse rate according to the one-way motion displacement and the acceleration peak number.

[0148] Optionally, the test data acquisition module 10 includes:

[0149] A third data acquisition unit is used to acquire the one-way motion duration of the first material and the original acceleration data of the second material;

[0150] A one-way acceleration extraction unit is used to extract one-way acceleration data from the acceleration raw data;

[0151] The stick-slip release energy determination unit is used to determine the stick-slip release energy according to the one-way motion duration and the one-way acceleration data.

[0152] Optionally, the acceleration level module 20 includes:

[0153] An acceleration interval determination unit, used to determine the acceleration interval in which the maximum acceleration value is located;

[0154] The acceleration impact level determining unit is used to determine the level corresponding to the acceleration interval as the acceleration impact level.

[0155] Optionally, the pulse rate level module 30 includes:

[0156] A pulse rate interval determination unit, used to determine the pulse rate interval in which the stick-slip pulse rate is located;

[0157] The stick-slip pulse impact level determining unit is configured to determine the level corresponding to the pulse rate interval as the stick-slip pulse impact level.

[0158] Optionally, the energy level module 40 includes:

[0159] An energy interval determination unit, used to determine the energy interval in which the stick-slip release energy is located;

[0160] The release energy impact level determining unit is used to determine the level corresponding to the energy interval as the release energy impact level.

[0161] Optionally, the friction noise level module 50 includes:

[0162] The friction noise level calculation unit is used to process the stick-slip pulse influence level, the release energy influence level and the acceleration influence level through the friction noise level formula to obtain the friction noise level; the friction noise level formula includes:

[0163]

[0164] Wherein, R is the friction noise level;

[0165] is the acceleration impact level;

[0166] The energy release impact level;

[0167] is the stick-slip pulse impact level.

[0168] For the specific definition of the material friction abnormal noise level assessment device, please refer to the definition of the material friction abnormal noise level assessment method above, which will not be repeated here. Each module in the above-mentioned material friction abnormal noise level assessment device can be implemented in whole or in part by software, hardware and their combination. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the corresponding operations of each of the above modules.

[0169] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Fig. 9 As shown. The computer device includes a processor, a memory, a network interface and a database connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a readable storage medium and an internal memory. The readable storage medium stores an operating system, computer-readable instructions and a database. The internal memory provides an environment for the operation of the operating system and computer-readable instructions in the readable storage medium. The database of the computer device is used to store data involved in the material friction noise level assessment method. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer-readable instructions are executed by the processor, a material friction noise level assessment method is implemented. The readable storage medium provided in this embodiment includes a non-volatile readable storage medium and a volatile readable storage medium.

[0170] In one embodiment, a computer device is provided, including a memory, a processor, and computer-readable instructions stored in the memory and executable on the processor, wherein the processor executes the computer-readable instructions to implement the following steps:

[0171] Obtaining friction test data when the first material and the second material undergo relative motion under pressure; the friction test data includes a stick-slip pulse rate, a stick-slip release energy, and a maximum acceleration value of the second material when abnormal friction noise is generated;

[0172] determining an acceleration impact level according to the maximum acceleration value;

[0173] determining a stick-slip pulse impact level according to the stick-slip pulse rate;

[0174] determining a release energy impact level according to the stick-slip release energy;

[0175] The friction noise level between the first material and the second material is determined according to the stick-slip pulse impact level, the released energy impact level, and the acceleration impact level.

[0176] In one embodiment, one or more computer-readable storage media storing computer-readable instructions are provided. The readable storage media provided in this embodiment include non-volatile readable storage media and volatile readable storage media. The readable storage media store computer-readable instructions. When the computer-readable instructions are executed by one or more processors, the following steps are implemented:

[0177] Obtaining friction test data when the first material and the second material undergo relative motion under pressure; the friction test data includes a stick-slip pulse rate, a stick-slip release energy, and a maximum acceleration value of the second material when abnormal friction noise is generated;

[0178] determining an acceleration impact level according to the maximum acceleration value;

[0179] determining a stick-slip pulse impact level according to the stick-slip pulse rate;

[0180] determining a release energy impact level according to the stick-slip release energy;

[0181] The friction noise level between the first material and the second material is determined according to the stick-slip pulse impact level, the released energy impact level, and the acceleration impact level.

[0182] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing related hardware through computer-readable instructions, and the computer-readable instructions can be stored in a non-volatile readable storage medium or a volatile readable storage medium. When the computer-readable instructions are executed, they may include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0183] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0184] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A method for evaluating the level of abnormal noise caused by friction of materials, characterized in that: include: Acquiring friction test data when the first material and the second material undergo relative motion under pressure; The friction test data includes a stick-slip pulse rate, a stick-slip release energy, and a maximum acceleration value of the second material when abnormal friction noise is generated; determining an acceleration impact level according to the maximum acceleration value; determining a stick-slip pulse impact level according to the stick-slip pulse rate; determining a release energy impact level according to the stick-slip release energy; The friction noise level between the first material and the second material is determined according to the stick-slip pulse impact level, the released energy impact level, and the acceleration impact level.

2. The material friction noise level evaluation method according to claim 1, characterized in that: The obtaining of friction test data between the first material and the second material comprises: Acquiring raw acceleration data of the second material; generating an acceleration curve according to the acceleration raw data; The maximum acceleration value is determined according to the acceleration curve.

3. The material friction noise level evaluation method according to claim 1, characterized in that: The obtaining of friction test data between the first material and the second material further includes: Acquire the one-way motion displacement of the first material and the original acceleration data of the second material; Determining the number of acceleration peaks of the second material when the first material performs a one-way motion according to the original acceleration data; The stick-slip pulse rate is determined according to the one-way motion displacement and the number of acceleration peaks.

4. The material friction noise level evaluation method according to claim 1, characterized in that: The obtaining of friction test data between the first material and the second material further includes: Acquire the one-way motion duration of the first material and the original acceleration data of the second material; Extracting one-way acceleration data from the acceleration raw data; The stick-slip release energy is determined according to the one-way motion duration and the one-way acceleration data.

5. The material friction noise level evaluation method according to claim 1, characterized in that: The step of determining the acceleration impact level according to the maximum acceleration value comprises: Determining the acceleration interval in which the maximum acceleration value is located; The level corresponding to the acceleration interval is determined as the acceleration impact level.

6. The material friction noise level evaluation method according to claim 1, characterized in that: Determining the stick-slip pulse impact level according to the stick-slip pulse rate includes: Determining a pulse rate interval in which the stick-slip pulse rate is located; The level corresponding to the pulse rate interval is determined as the stick-slip pulse influence level.

7. The material friction noise level evaluation method according to claim 1, characterized in that: The determining of the release energy impact level according to the stick-slip release energy includes: Determining an energy interval in which the stick-slip release energy is located; The level corresponding to the energy interval is determined as the released energy impact level.

8. The material friction noise level evaluation method according to claim 1, characterized in that: The determining the friction noise level between the first material and the second material according to the stick-slip pulse impact level, the release energy impact level, and the acceleration impact level includes: The stick-slip pulse impact level, the release energy impact level and the acceleration impact level are processed by the friction abnormal noise level formula to obtain the friction abnormal noise level; the friction abnormal noise level formula includes: Wherein, R is the friction noise level; is the acceleration impact level; The energy release impact level; is the stick-slip pulse impact level.

9. A material friction noise level assessment device, characterized in that: include: A test data acquisition module, used to acquire friction test data when the first material and the second material undergo relative motion under pressure; The friction test data includes a stick-slip pulse rate, a stick-slip release energy, and a maximum acceleration value of the second material when abnormal friction noise is generated; An acceleration level module, used to determine an acceleration impact level according to the maximum acceleration value; A pulse rate level module, used to determine a stick-slip pulse impact level according to the stick-slip pulse rate; An energy level module, used to determine a release energy impact level according to the stick-slip release energy; The friction noise level module is used to determine the friction noise level between the first material and the second material according to the stick-slip pulse impact level, the release energy impact level and the acceleration impact level.

10. A computer device comprising a memory, a processor, and computer-readable instructions stored in the memory and executable on the processor, characterized in that: When the processor executes the computer-readable instructions, the material friction noise level evaluation method according to any one of claims 1 to 8 is implemented.

11. One or more readable storage media storing computer-readable instructions, wherein when the computer-readable instructions are executed by one or more processors, the one or more processors execute the material friction noise level evaluation method according to any one of claims 1 to 8.

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