Tire tread stiffness test method, system, equipment, medium and program product

Abstract

The present invention discloses a tire tread stiffness testing method, system, equipment, medium and program product. The testing method comprises: obtaining a tire tread grounding array; obtaining a sheet stiffness calculation array from the tread grounding array; obtaining a sheet stiffness value based on the sheet stiffness calculation array; and obtaining a tire tread stiffness value based on the sheet stiffness value. The present invention only considers the influence of tire tread factors on stiffness, improves the calculation speed, calculates tire tread stiffness through physical methods, ensures calculation accuracy, and improves tire tread test accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of tire tread stiffness, and in particular to a tire tread stiffness testing method, system, equipment, medium and program product. Background Art

[0002] Conventional indoor test methods are required for stiffness testing. Actual tires are required, that is, they must be tested after the mold scheme is determined. If there is a problem with the stiffness design, the tire pattern has already been molded and the pattern scheme cannot be modified. Some companies in the industry will use the method of engraving tires for testing and verify before mold processing, but the tire engraving speed is also slow. When dealing with multiple schemes, there is still a lack of time, and the engraving scheme is less accurate than mold processing. The use of finite element methods requires high computer computing power, and the modeling and simulation processes require high technical capabilities. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of low test accuracy and high computing power requirement in the tire stiffness testing method in the prior art, and to provide a tire tread stiffness testing method, system, equipment, medium and program product.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] A first aspect of the present invention provides a method for testing tire tread stiffness, the method comprising:

[0006] Get the tire tread contact array;

[0007] Obtaining a sheet body stiffness calculation array from the pattern ground contact array;

[0008] Obtaining a sheet stiffness value based on the sheet stiffness calculation array;

[0009] A tread stiffness value of the tire is obtained based on the sheet stiffness value.

[0010] Preferably, the step of obtaining the tire tread contact array comprises:

[0011] Construct tire tread model;

[0012] Acquire distance data between each measuring point of the tire pattern and the tire tread surface based on the tire pattern model;

[0013] Obtain a two-dimensional array based on the distance data;

[0014] Obtain tire footprint data;

[0015] determining a contact area of ​​the tire based on the footprint data;

[0016] The pattern ground contact array is obtained from the two-dimensional array based on the ground contact range.

[0017] Preferably, the step of obtaining the sheet stiffness value based on the sheet stiffness calculation array comprises:

[0018] Extracting a grounding width array and a grounding depth array from the sheet body stiffness calculation array to obtain a stiffness value array;

[0019] Acquiring a preset depth value of the pattern sheet based on the stiffness value array;

[0020] Determine whether the preset depth values ​​are continuous, and if so, combine and calculate at least three stiffnesses to obtain a combined ground width array, a combined ground depth array, and a combined stiffness value array;

[0021] Determine whether the merge calculation is completed. If completed, obtain the sheet stiffness value; if not completed, return to the step of extracting the ground width array and the ground depth array from the sheet stiffness calculation array to obtain the stiffness value array.

[0022] Preferably, the step of obtaining the sheet stiffness value based on the sheet stiffness calculation array further comprises:

[0023] If it is determined that the preset depth value is discontinuous, the two blocks of stiffness are combined and calculated to obtain a combined ground contact width array, a combined ground contact depth array, and a combined stiffness value array.

[0024] Preferably, the step of obtaining the tread stiffness value of the tire based on the sheet stiffness value comprises:

[0025] The sheet stiffness values ​​within the contact area are superimposed to obtain the tread stiffness value of the tire within the footprint.

[0026] Preferably, the testing method further comprises:

[0027] Obtain the change curve value of the tire pattern ground contact stiffness in the full circumferential direction;

[0028] The change curve value is output.

[0029] A second aspect of the present invention provides a tire tread stiffness testing system, the tire tread stiffness testing system comprising:

[0030] A first acquisition module, used for acquiring a tread contact array of a tire;

[0031] A second acquisition module is used to acquire a sheet body stiffness calculation array from the pattern ground contact array;

[0032] A third acquisition module, used for acquiring a sheet stiffness value based on the sheet stiffness calculation array;

[0033] The fourth acquisition module is used to acquire the tread stiffness value of the tire based on the sheet stiffness value.

[0034] Preferably, the first acquisition module includes:

[0035] A construction unit, used for constructing a tire pattern model;

[0036] A first acquisition unit, configured to acquire distance data between each measurement point of the tire pattern and the tire tread surface based on the tire pattern model;

[0037] A second acquisition unit, configured to obtain a two-dimensional array based on the distance data;

[0038] A third acquisition unit, used for acquiring tire footprint data;

[0039] a determination unit, configured to determine a contact area of ​​the tire based on the footprint data;

[0040] A fourth acquisition unit is used to acquire the pattern ground contact array from the two-dimensional array based on the ground contact range.

[0041] Preferably, the third acquisition module includes:

[0042] An extraction unit, used for extracting a grounding width array and a grounding depth array from the sheet body stiffness calculation array to obtain a stiffness value array;

[0043] a fifth acquiring unit, configured to acquire a preset depth value of the pattern sheet based on the stiffness value array;

[0044] A first judging unit, configured to judge whether the preset depth values ​​are continuous, and if so, call a first merging calculation unit;

[0045] The first merging calculation unit is used to merge and calculate at least three blocks of stiffness to obtain a merged ground contact width array, a merged ground contact depth array and a merged stiffness value array;

[0046] A second judgment unit is used to judge whether the merging calculation is completed, and if so, call the sixth acquisition unit; if not, call the extraction unit;

[0047] The sixth acquisition unit is used to acquire the sheet stiffness value.

[0048] Preferably, the third acquisition module further includes:

[0049] The second merging calculation unit is used to merge and calculate the two blocks of stiffness if it is determined that the preset depth value is discontinuous, so as to obtain a merged ground contact width array, a merged ground contact depth array and a merged stiffness value array.

[0050] Preferably, the fourth acquisition module is specifically used to superimpose the sheet stiffness values ​​within the contact area to obtain the tread stiffness value of the tire within the footprint.

[0051] Preferably, the testing system further comprises:

[0052] A fifth acquisition module is used to obtain a change curve value of the tire pattern ground contact stiffness in the entire circumferential direction;

[0053] An output module is used to output the change curve value.

[0054] A third aspect of the present invention provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and used to run on the processor, wherein the processor implements the tire tread stiffness testing method described in the first aspect when executing the computer program.

[0055] A fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the tire tread stiffness testing method described in the first aspect.

[0056] A fifth aspect of the present invention provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the method for testing tire tread stiffness as described in the first aspect is implemented.

[0057] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0058] The positive and progressive effects of the present invention are:

[0059] The present invention only considers the influence of tire pattern factors on stiffness, thereby improving the calculation speed, calculating the tire pattern stiffness through a physical method, ensuring the calculation accuracy, and improving the test accuracy of the tire pattern. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 This is a first flow chart of the tire tread stiffness testing method according to Example 1 of the present invention.

[0061] Figure 2 This is a second flow chart of the tire tread stiffness testing method according to Example 1 of the present invention.

[0062] Figure 3 This is a module schematic diagram of a tire tread stiffness testing system according to Example 2 of the present invention.

[0063] Figure 4 This is a schematic diagram of the structure of an electronic device for implementing a tire tread stiffness testing method according to Embodiment 3 of the present invention.

[0064] Electronic device 30 , processor 31 , memory 32 , bus 33 , random access memory (RAM) 321 , cache memory 322 , read-only memory (ROM) 323 , program module 324 , utility 325 , external device 34 , input / output (I / O) interface 35 , network adapter 36 . DETAILED DESCRIPTION

[0065] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0066] Example 1

[0067] This embodiment provides a method for testing tire tread stiffness, such as Figure 1 As shown, the test method includes:

[0068] Step 101, obtaining a tire tread contact array;

[0069] Step 102, obtaining a sheet body stiffness calculation array from the pattern grounding array;

[0070] Step 103, obtaining the sheet stiffness value based on the sheet stiffness calculation array;

[0071] Step 104: Obtain the tread stiffness value of the tire based on the sheet stiffness value.

[0072] In this embodiment, the automatic extraction of pattern data is achieved through the API (application programming interface) developed by industrial design CAD (Computer Aid Design) software. Specifically, the pattern data extracted from the CAD software is converted into mathematical data, and the tire pattern stiffness is calculated through the stiffness calculation formula to obtain the tire pattern stiffness value.

[0073] It should be noted that the stiffness calculation formula is an existing calculation formula and will not be repeated here.

[0074] This embodiment only considers the influence of the tire pattern factor on the stiffness, thereby improving the calculation speed, calculating the tire pattern stiffness through a physical method, ensuring the calculation accuracy, and improving the test accuracy of the tire pattern.

[0075] As an optional implementation, Figure 2 As shown, step 101 includes:

[0076] Step 1011, constructing a tire pattern model;

[0077] Step 1012: acquiring distance data between each measuring point of the tire pattern and the tire tread surface based on the tire pattern model;

[0078] Step 1013, obtaining a two-dimensional array based on the distance data;

[0079] Step 1014, obtaining tire footprint data;

[0080] Step 1015: determining the contact area of ​​the tire based on the footprint data;

[0081] Step 1016: Obtain a pattern ground contact array from the two-dimensional array based on the ground contact range.

[0082] In the specific implementation process, CAD software is used to complete the tire pattern modeling work. By interacting with the CAD software, the distance data between each measurement point of the tire pattern and the tread surface is obtained, and the distance data is summarized to form a two-dimensional array. By entering the imprint data, the ground contact range of the tire is determined, and the ground contact part array result (i.e., the pattern ground contact array) is extracted from the two-dimensional array for subsequent calculations.

[0083] As an optional implementation, Figure 2 As shown, step 103 includes:

[0084] Step 1031, extracting the grounding width array and the grounding depth array from the sheet stiffness calculation array to obtain a stiffness value array;

[0085] Step 1032, obtaining a preset depth value of the pattern sheet based on the stiffness value array;

[0086] In this embodiment, the preset depth value may be the minimum depth value of the pattern sheet.

[0087] Step 1033, determine whether the preset depth value is continuous, if so, execute step 1034; if not (that is, if it is determined that the preset depth value is discontinuous), execute step 1037;

[0088] Step 1034, combining and calculating at least three blocks of stiffness to obtain a combined ground contact width array, a combined ground contact depth array, and a combined stiffness value array;

[0089] Step 1035: determine whether the merge calculation is completed. If completed, execute step 1036; if not completed, return to step 1031;

[0090] Step 1036, obtaining the sheet stiffness value;

[0091] Step 1037: Combine and calculate the two stiffnesses to obtain a combined ground contact width array, a combined ground contact depth array, and a combined stiffness value array.

[0092] In this embodiment, the minimum stiffness positions are continuously merged in a loop and converted into equivalent blocks; the minimum depth value of the pattern sheet is obtained, and a minimum depth position list is created; the front-end continuous minimum data is obtained, the continuous minimum depth is merged, and the equivalent block stiffness value is calculated; when there is only one digit left in the stiffness list, it is the sheet stiffness value.

[0093] As an optional implementation, Figure 2 As shown, step 104 includes:

[0094] Step 1041, superimpose the sheet stiffness values ​​within the contact area to obtain the tread stiffness value of the tire within the footprint.

[0095] As an optional implementation, the testing method further includes:

[0096] Obtain the change curve value of the tire pattern ground contact stiffness in the full circumferential direction;

[0097] Output the change curve value.

[0098] In this embodiment, the ground contact part stiffness calculation is realized through the above algorithm, and combined with the footprint, the ground contact stiffness change of the tire pattern in the entire circumferential direction is calculated separately and summarized into a stiffness change curve. The curve is output through the C# Chart control, and the calculation process data is saved for subsequent verification to form a logical closed loop.

[0099] In addition, historical calculation data is saved and managed through the database for subsequent query.

[0100] According to the above calculation process, this embodiment implements the core calculation code through Python to calculate the pattern stiffness value, and integrates the pattern stiffness value into the system through CATIA secondary development, thereby realizing the automatic calculation of pattern stiffness.

[0101] This embodiment is integrated into the CAD system without much preparatory work. It only considers the influence of pattern factors on stiffness, and the calculation speed can reach 10 minutes / scheme, which is suitable for pattern screening; it interacts with the CAD design system to extract pattern data, and calculates stiffness based on the pattern logic; it realizes the automation of stiffness calculation through secondary development; it calculates through physical methods to ensure the accuracy of calculation; it realizes the full automation of the whole design simulation process, and ensures the data is controlled according to standards through system management.

[0102] Example 2

[0103] This embodiment provides a tire tread stiffness testing system, such as Figure 3 As shown, the tire tread stiffness testing system includes:

[0104] A first acquisition module 21 is used to acquire a tread contact array of a tire;

[0105] A second acquisition module 22 is used to acquire a sheet body stiffness calculation array from a pattern ground contact array;

[0106] A third acquisition module 23, used for acquiring a sheet stiffness value based on a sheet stiffness calculation array;

[0107] The fourth acquisition module 24 is used to acquire the tread stiffness value of the tire based on the sheet stiffness value.

[0108] In this embodiment, the automatic extraction of pattern data is achieved through the API (application programming interface) developed by industrial design CAD (Computer Aid Design) software. Specifically, the pattern data extracted from the CAD software is converted into mathematical data, and the tire pattern stiffness is calculated through the stiffness calculation formula to obtain the tire pattern stiffness value.

[0109] It should be noted that the stiffness calculation formula is an existing calculation formula and will not be repeated here.

[0110] This embodiment only considers the influence of the tire pattern factor on the stiffness, thereby improving the calculation speed, calculating the tire pattern stiffness through a physical method, ensuring the calculation accuracy, and improving the test accuracy of the tire pattern.

[0111] As an optional implementation manner, the first acquisition module 21 includes:

[0112] A construction unit, used for constructing a tire pattern model;

[0113] A first acquisition unit, used for acquiring distance data between each measurement point of the tire pattern and the tire tread surface based on the tire pattern model;

[0114] A second acquisition unit, used for obtaining a two-dimensional array based on the distance data;

[0115] A third acquisition unit, used for acquiring tire footprint data;

[0116] A determination unit, configured to determine a contact area of ​​the tire based on the footprint data;

[0117] The fourth acquisition unit is used to acquire a pattern ground contact array from the two-dimensional array based on the ground contact range.

[0118] In the specific implementation process, CAD software is used to complete the tire pattern modeling work. By interacting with the CAD software, the distance data between each measurement point of the tire pattern and the tread surface is obtained, and the distance data is summarized to form a two-dimensional array. By entering the imprint data, the ground contact range of the tire is determined, and the ground contact part array result (i.e., the pattern ground contact array) is extracted from the two-dimensional array for subsequent calculations.

[0119] As an optional implementation manner, the third acquisition module 23 includes:

[0120] An extraction unit is used to extract a grounding width array and a grounding depth array from a sheet stiffness calculation array to obtain a stiffness value array;

[0121] a fifth acquiring unit, configured to acquire a preset depth value of the pattern sheet based on the stiffness value array;

[0122] A first judging unit, configured to judge whether the preset depth values ​​are continuous, and if so, calling a first merging calculation unit;

[0123] A first merging calculation unit is used to merge and calculate at least three stiffnesses to obtain a merged ground contact width array, a merged ground contact depth array and a merged stiffness value array;

[0124] The second judgment unit is used to judge whether the merging calculation is completed, and if so, call the sixth acquisition unit; if not, call the extraction unit;

[0125] The sixth acquisition unit is used to acquire the sheet stiffness value.

[0126] As an optional implementation manner, the third acquisition module 23 further includes:

[0127] The second merging calculation unit is used to merge and calculate the two blocks of stiffness if it is determined that the preset depth value is discontinuous, so as to obtain a merged ground contact width array, a merged ground contact depth array and a merged stiffness value array.

[0128] In this embodiment, the minimum stiffness positions are continuously merged in a loop and converted into equivalent blocks; the minimum depth value of the pattern sheet is obtained, and a minimum depth position list is created; the front-end continuous minimum data is obtained, the continuous minimum depth is merged, and the equivalent block stiffness value is calculated; when there is only one digit left in the stiffness list, it is the sheet stiffness value.

[0129] As an optional implementation, the fourth acquisition module 24 is specifically used to superimpose the sheet stiffness values ​​within the contact area to obtain the tread stiffness value of the tire within the footprint.

[0130] As an optional implementation, the test system further includes:

[0131] A fifth acquisition module is used to obtain a change curve value of the tire pattern ground contact stiffness in the entire circumferential direction;

[0132] Output module, used to output the change curve value.

[0133] In this embodiment, the ground contact part stiffness calculation is realized through the above algorithm, and combined with the footprint, the ground contact stiffness change of the tire pattern in the entire circumferential direction is calculated separately and summarized into a stiffness change curve. The curve is output through the C# Chart control, and the calculation process data is saved for subsequent verification to form a logical closed loop.

[0134] In addition, historical calculation data is saved and managed through the database for subsequent query.

[0135] According to the above calculation process, this embodiment implements the core calculation code through Python to calculate the pattern stiffness value, and integrates the pattern stiffness value into the system through CATIA secondary development, thereby realizing the automatic calculation of pattern stiffness.

[0136] This embodiment is integrated into the CAD system without much preparatory work. It only considers the influence of pattern factors on stiffness, and the calculation speed can reach 10 minutes / scheme, which is suitable for pattern screening; it interacts with the CAD design system to extract pattern data, and calculates stiffness based on the pattern logic; it realizes the automation of stiffness calculation through secondary development; it calculates through physical methods to ensure the accuracy of calculation; it realizes the full automation of the whole design simulation process, and ensures the data is controlled according to standards through system management.

[0137] Example 3

[0138] Figure 4 This is a schematic diagram of the structure of an electronic device provided in Example 3 of the present invention. The electronic device includes a memory, a processor, and a computer program stored in the memory and used to run on the processor. When the processor executes the program, the tire tread stiffness test method of Example 1 is implemented. Figure 4 The electronic device 30 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0139] like Figure 4 As shown, the electronic device 30 may be in the form of a general-purpose computing device, for example, it may be a server device. The components of the electronic device 30 may include, but are not limited to: at least one processor 31, at least one memory 32, and a bus 33 connecting different system components (including the memory 32 and the processor 31).

[0140] The bus 33 includes a data bus, an address bus, and a control bus.

[0141] The memory 32 may include a volatile memory, such as a random access memory (RAM) 321 and / or a cache memory 322 , and may further include a read-only memory (ROM) 323 .

[0142] The memory 32 may also include a program / utility 325 having a set (at least one) of program modules 324, such program modules 324 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0143] The processor 31 executes various functional applications and data processing by running the computer programs stored in the memory 32, such as the tire tread stiffness testing method of the first embodiment of the present invention.

[0144] The electronic device 30 may also communicate with one or more external devices 34 (e.g., keyboards, pointing devices, etc.). Such communication may be performed via an input / output (I / O) interface 35. Furthermore, the model generating device 30 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) via a network adapter 36. Figure 4 As shown, the network adapter 36 communicates with other modules of the model-generated device 30 via the bus 33. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with the model-generated device 30, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems, etc.

[0145] It should be noted that although several units / modules or sub-units / modules of the electronic device are mentioned in the above detailed description, this division is merely exemplary and not mandatory. In fact, according to an embodiment of the present invention, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided into multiple units / modules to be embodied.

[0146] Example 4

[0147] This embodiment provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the tire tread stiffness testing method provided in Embodiment 1 is implemented.

[0148] The readable storage medium may include but is not limited to: a portable disk, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory, an optical storage device, a magnetic storage device or any suitable combination of the above.

[0149] In a possible implementation manner, the present invention may also be implemented in the form of a program product, which includes a program code. When the program product is run on a terminal device, the program code is used to enable the terminal device to execute the tire tread stiffness testing method described in Example 1.

[0150] Among them, the program code for executing the present invention can be written in any combination of one or more programming languages, and the program code can be executed completely on the user device, partially on the user device, as an independent software package, partially on the user device and partially on a remote device, or completely on the remote device.

[0151] Example 5

[0152] Embodiment 5 of the present disclosure also provides a computer program product, including a computer program, which, when executed by a processor, implements any of the above-mentioned tire tread stiffness testing methods.

[0153] Among them, the program code for executing the computer program product of the present disclosure can be written in any combination of one or more programming languages, and the program code can be executed completely on the user device, partially on the user device, as an independent software package, partially on the user device and partially on a remote device, or completely on the remote device.

[0154] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A method for testing tire tread stiffness, characterized in that: The test method includes: Get the tire tread contact array; Obtaining a sheet body stiffness calculation array from the pattern ground contact array; Obtaining a sheet stiffness value based on the sheet stiffness calculation array; Obtaining a tread stiffness value of the tire based on the sheet stiffness value; The step of obtaining the tire tread contact array comprises: Construct tire tread model; Acquire distance data between each measuring point of the tire pattern and the tire tread surface based on the tire pattern model; Obtain a two-dimensional array based on the distance data; Obtain tire footprint data; determining a contact area of ​​the tire based on the footprint data; The pattern ground contact array is obtained from the two-dimensional array based on the ground contact range.

2. The tire tread stiffness testing method according to claim 1, characterized in that: The step of obtaining the sheet stiffness value based on the sheet stiffness calculation array comprises: Extracting a grounding width array and a grounding depth array from the sheet body stiffness calculation array to obtain a stiffness value array; Acquiring a preset depth value of the pattern sheet based on the stiffness value array; Determine whether the preset depth values ​​are continuous, and if so, combine and calculate at least three stiffnesses to obtain a combined ground width array, a combined ground depth array, and a combined stiffness value array; Determine whether the merge calculation is completed. If completed, obtain the sheet stiffness value; if not completed, return to the step of extracting the ground width array and the ground depth array from the sheet stiffness calculation array to obtain the stiffness value array.

3. The tire tread stiffness testing method according to claim 2, characterized in that: The step of obtaining the sheet stiffness value based on the sheet stiffness calculation array further includes: If it is determined that the preset depth value is discontinuous, the two blocks of stiffness are combined and calculated to obtain a combined ground contact width array, a combined ground contact depth array, and a combined stiffness value array.

4. The tire tread stiffness testing method according to claim 1, characterized in that: The step of obtaining the tread stiffness value of the tire based on the sheet stiffness value comprises: The sheet stiffness values ​​within the contact area are superimposed to obtain the tread stiffness value of the tire within the footprint.

5. The tire tread stiffness testing method according to claim 1, characterized in that: The test method also includes: Obtain the change curve value of the tire pattern ground contact stiffness in the full circumferential direction; The change curve value is output.

6. A tire tread stiffness testing system, characterized in that: The test system comprises: A first acquisition module, used for acquiring a tread contact array of a tire; A second acquisition module is used to acquire a sheet body stiffness calculation array from the pattern ground contact array; A third acquisition module, used for acquiring a sheet stiffness value based on the sheet stiffness calculation array; A fourth acquisition module, used for acquiring a tread stiffness value of the tire based on the sheet stiffness value; The first acquisition module includes: A construction unit, used for constructing a tire pattern model; A first acquisition unit, configured to acquire distance data between each measurement point of the tire pattern and the tire tread surface based on the tire pattern model; A second acquisition unit, configured to obtain a two-dimensional array based on the distance data; A third acquisition unit, used for acquiring tire footprint data; a determination unit, configured to determine a contact area of ​​the tire based on the footprint data; A fourth acquisition unit is used to acquire the pattern ground contact array from the two-dimensional array based on the ground contact range.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and used to run on the processor, characterized in that: When the processor executes the computer program, the tire tread stiffness testing method according to any one of claims 1 to 5 is implemented.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the tire tread stiffness testing method according to any one of claims 1 to 5 is implemented.

9. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the method for testing tire tread stiffness according to any one of claims 1 to 5 is implemented.

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