Simulation method, device and finite element simulation system for tire frame material quality

Abstract

This application provides a method, device, and finite element simulation system for simulating the mass of tire carcass material. The method comprises: obtaining a single-twist cross-sectional area and twist count of the tire carcass material, where the single-twist cross-sectional area is the cross-sectional area of ​​the single-twist carcass material, and the twist count is the number of twists corresponding to the twisting method used to form the carcass material into a cord; obtaining an equivalent cross-sectional area based on the product of the single-twist cross-sectional area and the twist count; and simulating and calculating the carcass material mass based on at least the equivalent cross-sectional area to obtain a carcass material mass simulation result. This method solves the problem of high distortion in carcass material mass simulations in the prior art.

Description

Technical Field

[0001] The present application relates to the technical field of tire finite element analysis, and in particular to a method, device, computer-readable storage medium, processor, and finite element simulation system for simulating the quality of tire skeleton materials. Background Art

[0002] The rapid rise and development of tire finite element simulation technology has made it an indispensable tool in tire development, design, and optimization. While numerous finite element simulation technologies are currently available for tires, the accuracy levels of these technologies vary widely across institutions and companies. It's important to note that the consistency between simulation results and actual results is crucial for guiding design with finite element simulation technology, and improved simulation accuracy significantly impacts its value in assisting design. When performing transient motion simulation on tires, the software algorithm takes into account the product's moment of inertia and damping, significantly impacting the results. As a crucial component of the tire, the tire carcass material accounts for approximately 15% of the total weight, and the resulting moment of inertia and damping will impact the final simulation results.

[0003] Tire carcass materials primarily include steel cord, bead wire, and fiber cord. These are typically constructed from a single filament twisted into multiple strands. For example, the steel cord of a semi-steel tire is a double-stranded monofilament. Currently, finite element simulations often use the combined outer diameter of the multiple strands as the diameter of the twist to determine the carcass' cross-sectional area. This approach incorporates the rubber coating on some of the steel wires, significantly increasing the carcass' mass and impacting overall simulation accuracy.

[0004] Therefore, it is necessary to develop more accurate and effective methods to optimize the quality of skeleton materials to slow down or prevent the occurrence of the above situations.

[0005] The above information disclosed in the background technology section is only used to enhance the understanding of the background technology of the technology described in this article. Therefore, the background technology may contain certain information that does not form the prior art known in this country to those skilled in the art. Summary of the Invention

[0006] The main purpose of this application is to provide a method, device, computer-readable storage medium, processor and finite element simulation system for simulating the quality of tire frame materials to solve the problem of high distortion in the quality simulation of frame materials in the prior art.

[0007] According to one aspect of an embodiment of the present invention, a method for simulating the quality of a tire skeleton material is provided, comprising: obtaining a single-twist cross-sectional area and a twist number of the skeleton material of the tire, wherein the single-twist cross-sectional area is a cross-sectional area of ​​the skeleton material when twisted alone, and the twist number is a number of twists corresponding to a twisting method of the skeleton material to form a cord; obtaining an equivalent cross-sectional area based on the product of the single-twist cross-sectional area and the twist number; and performing simulation calculation on the quality of the skeleton material at least based on the equivalent cross-sectional area to obtain a simulation result of the quality of the skeleton material.

[0008] Optionally, the mass of the skeleton material is simulated and calculated at least based on the equivalent cross-sectional area to obtain a mass simulation result of the skeleton material, including: obtaining a material distribution map of the tire; constructing a solid model of the tire according to the material distribution map; establishing a finite element model according to the solid model; and inputting at least the equivalent cross-sectional area into the finite element model for simulation calculation to obtain a mass simulation result of the skeleton material.

[0009] Optionally, at least the equivalent cross-sectional area is input into the finite element model for simulation calculation to obtain the mass simulation result of the skeleton material, including: inputting the density of the skeleton material, the equivalent cross-sectional area, the density of the cord, and the distribution angle of the cord into the finite element model for simulation calculation to obtain the mass simulation result of the skeleton material.

[0010] Optionally, the solid model includes the cord. Before establishing a finite element model based on the solid model, the method further includes: determining an equivalent cross-section based on the cross-section of the cord formed by the skeleton material, the equivalent cross-section having the same center of gravity and shape as the cross-section of the cord, and the area of ​​the equivalent cross-section being equal to the equivalent cross-sectional area; determining the boundary of the cord in the solid model based on the equivalent cross-section to obtain the optimized solid model.

[0011] Optionally, the solid model includes a belt layer, a carcass, a cap strip and a zero-degree belt, and the belt layer, the carcass, the cap strip and the zero-degree belt all include the cords, and the equivalent cross-sections of the cords in the belt layer, the carcass, the cap strip and the zero-degree belt are all circular.

[0012] Optionally, the solid model further includes tire beads, each of the tire beads includes the cord, and the equivalent cross-sections of the cords in the tire beads are all trapezoidal.

[0013] According to another aspect of an embodiment of the present invention, a device for simulating the quality of a tire skeleton material is also provided, including: an acquisition unit for acquiring the single-twist cross-sectional area and the number of twists of the skeleton material of the tire, wherein the single-twist cross-sectional area is the cross-sectional area of ​​the skeleton material when twisted alone, and the number of twists is the number of twists corresponding to the twisting method of the skeleton material to form a cord; a calculation unit for obtaining an equivalent cross-sectional area based on the product of the single-twist cross-sectional area and the number of twists; and a simulation unit for performing simulation calculation on the quality of the skeleton material at least based on the equivalent cross-sectional area to obtain a simulation result of the quality of the skeleton material.

[0014] According to yet another aspect of the embodiments of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium includes a stored program, wherein the program executes any one of the methods described above.

[0015] According to yet another aspect of an embodiment of the present invention, a processor is provided, wherein the processor is configured to run a program, wherein any one of the methods is executed when the program is run.

[0016] According to another aspect of an embodiment of the present invention, a finite element simulation system is also provided, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include methods for executing any one of the methods described.

[0017] In an embodiment of the present invention, in the above-mentioned method for simulating the quality of the tire skeleton material, first, the single-twist cross-sectional area and the number of twists of the tire skeleton material are obtained, where the single-twist cross-sectional area is the cross-sectional area of ​​the single-twist skeleton material, and the number of twists is the number of twists corresponding to the twisting method of the skeleton material to form the cord; then, the equivalent cross-sectional area is obtained based on the product of the single-twist cross-sectional area and the number of twists; finally, the mass of the skeleton material is simulated and calculated based on at least the equivalent cross-sectional area to obtain the mass simulation result of the skeleton material. This method calculates the product of the single-twist cross-sectional area and the number of twists to obtain the equivalent cross-sectional area, and uses the equivalent cross-sectional area instead of the cross-sectional area of ​​the cord for simulation calculation, eliminating the influence of the rubber coating in the cord, making the quality simulation result of the skeleton material closer to the actual quality of the skeleton material, and solving the problem of high distortion in the quality simulation of the skeleton material in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings that constitute part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0019] Figure 1A flow chart showing a method for simulating tire frame material quality according to an embodiment of the present application is shown;

[0020] Figure 2 A flow chart showing a method for simulating tire frame material quality according to a specific embodiment of the present application is shown;

[0021] Figure 3 A schematic diagram showing a twisting method according to an embodiment of the present application is shown;

[0022] Figure 4 A schematic diagram showing an equivalent cross section according to an embodiment of the present application;

[0023] Figure 5 A schematic diagram of a device for simulating tire frame material quality according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0024] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] It should be understood that when an element (such as a layer, film, region, or substrate) is described as being "on" another element, the element may be directly on the other element or intervening elements may be present. Moreover, in the specification and claims, when it is described that an element is "connected to" another element, the element may be "directly connected to" the other element or "connected to" the other element through a third element.

[0027] As mentioned in the background technology, the quality simulation of the skeleton material in the prior art has a large degree of distortion. In order to solve the above problem, in a typical embodiment of the present application, a simulation method, device, computer-readable storage medium, processor and finite element simulation system for the quality of tire skeleton materials are provided.

[0028] According to an embodiment of the present application, a method for simulating tire frame material quality is provided.

[0029] Figure 1FIG. 1 is a flow chart of a method for simulating the quality of tire frame materials according to an embodiment of the present application. Figure 1 As shown, the method includes the following steps:

[0030] Step S101, obtaining a single twist cross-sectional area and a twist number of a tire carcass material, wherein the single twist cross-sectional area is a cross-sectional area of ​​the carcass material when twisted alone, and the twist number is a number of twists corresponding to a twisting method of the carcass material to form a cord;

[0031] Step S102, obtaining an equivalent cross-sectional area according to the product of the single twist cross-sectional area and the number of twists;

[0032] Step S103 , performing simulation calculation on the mass of the skeleton material at least according to the equivalent cross-sectional area, to obtain a simulation result of the mass of the skeleton material.

[0033] In the above-mentioned method for simulating the quality of the tire frame material, first, the single-twist cross-sectional area and the number of twists of the tire frame material are obtained, where the single-twist cross-sectional area is the cross-sectional area of ​​the frame material when twisted alone, and the number of twists is the number of twists corresponding to the twisting method of the frame material to form the cord; then, an equivalent cross-sectional area is obtained based on the product of the single-twist cross-sectional area and the number of twists; finally, the mass of the frame material is simulated and calculated based on at least the equivalent cross-sectional area to obtain a simulation result of the mass of the frame material. This method calculates the product of the single-twist cross-sectional area and the number of twists to obtain the equivalent cross-sectional area, and uses the equivalent cross-sectional area instead of the cross-sectional area of ​​the cord for simulation calculation, eliminating the influence of the rubber coating in the cord, making the frame material mass simulation result closer to the actual frame material mass, and solving the problem of high distortion in the frame material mass simulation in the prior art.

[0034] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0035] In one embodiment of the present application, Figure 2As shown, the mass of the skeleton material is simulated and calculated at least based on the equivalent cross-sectional area to obtain the mass simulation result of the skeleton material, including: obtaining the material distribution map of the tire; constructing a solid model of the tire based on the material distribution map; establishing a finite element model based on the solid model; at least inputting the equivalent cross-sectional area into the finite element model for simulation calculation to obtain the mass simulation result of the skeleton material. Specifically, the above method realizes the equivalent conversion between the finite element data and the actual data of the tire skeleton material mass, which is a link in the overall tire finite element simulation analysis process. This process is between the tire solid model and the finite element model processing. After the tire material distribution map is processed, the solid model is established, and the finite element model is established and submitted for simulation calculation, the corresponding simulation result is output, and the mass of the skeleton material is output separately. The equivalent conversion link makes the skeleton material mass simulation result closer to the actual skeleton material mass.

[0036] In one embodiment of the present application, at least the equivalent cross-sectional area is input into the finite element model for simulation calculation to obtain the mass simulation result of the skeleton material, including: inputting the density of the skeleton material, the equivalent cross-sectional area, the density of the cord, and the distribution angle of the cord into the finite element model for simulation calculation to obtain the mass simulation result of the skeleton material. Specifically, Figure 2 As shown, the density of the above-mentioned skeleton material, the above-mentioned equivalent cross-sectional area, the density of the above-mentioned cords, and the distribution angle of the above-mentioned cords are all material properties of the skeleton material. The density of the above-mentioned skeleton material, the above-mentioned equivalent cross-sectional area, the density of the above-mentioned cords, and the distribution angle of the above-mentioned cords are input into the material property assignment module in the finite element software for simulation calculation to obtain the mass simulation result of the above-mentioned skeleton material.

[0037] In one embodiment of the present application, the solid model includes the cord. Before establishing a finite element model based on the solid model, the method further includes: determining an equivalent cross section based on the cross section of the cord formed by the skeleton material, the equivalent cross section having the same center of gravity and shape as the cross section of the cord, and the area of ​​the equivalent cross section being equal to the equivalent cross-sectional area; determining the boundary of the cord in the solid model based on the equivalent cross section, and obtaining the optimized solid model. Specifically, the cord made of a single-filament double strand is as follows: Figure 3 As shown, taking this cord as an example, Figure 4 As shown, A1 is the cross-section of the above-mentioned cord, L1 is the cross-section of the above-mentioned cord, A2 is the cross-section of the single twist, A3 is the equivalent cross-section, L3 is the edge line of the equivalent cross-section, and the edge line L3 of the equivalent cross-section is used as the boundary of the above-mentioned cord in the above-mentioned solid model, so as to optimize the above-mentioned solid model to further reduce the distortion of the simulation.

[0038] In one embodiment of the present application, the above-mentioned solid model includes a belt layer, a carcass, a cap strip and a zero-degree band. The above-mentioned belt layer, the above-mentioned carcass, the above-mentioned cap strip and the above-mentioned zero-degree band all include the above-mentioned cords. The above-mentioned equivalent cross-sections of the above-mentioned cords in the above-mentioned belt layer, the above-mentioned carcass, the above-mentioned cap strip and the above-mentioned zero-degree band are all circular. Specifically, the cords in different structures of the above-mentioned solid model adopt different twisting methods, resulting in different cross-sectional shapes of the cords. If the cross-sections of the above-mentioned cords in the above-mentioned belt layer, the above-mentioned carcass, the above-mentioned cap strip and the above-mentioned zero-degree band are circular, then the corresponding equivalent cross-sections are also circular. Of course, if the twisting method of the above-mentioned structure is changed to cause the cross-sectional shape to change, the shape of the corresponding equivalent cross-section will also change accordingly, and the boundary of the corresponding cord will also change accordingly, so as to further reduce the distortion of the simulation.

[0039] In one embodiment of the present application, the solid model further includes tire beads, each of which includes the tire cords, and the equivalent cross-sections of the tire cords in the tire beads are all trapezoidal. Specifically, if the cross-section of the tire cords in the tire beads is trapezoidal, the corresponding equivalent cross-section is also trapezoidal. Of course, if the twisting method of the tire beads is changed, resulting in a change in cross-sectional shape, the shape of the equivalent cross-section will also change accordingly, and the corresponding cord boundaries will also change accordingly, thereby further reducing simulation distortion.

[0040] The present application also provides a device for simulating the quality of tire frame materials. It should be noted that the device for simulating the quality of tire frame materials in the present application can be used to execute the method for simulating the quality of tire frame materials provided in the present application. The following describes the device for simulating the quality of tire frame materials provided in the present application.

[0041] Figure 5 FIG. 1 is a schematic diagram of a device for simulating the quality of tire frame materials according to an embodiment of the present application. Figure 5 As shown, the device includes:

[0042] An acquisition unit 10 is configured to acquire a single twist cross-sectional area and a twist number of a tire skeleton material, wherein the single twist cross-sectional area is a cross-sectional area of ​​the skeleton material when twisted alone, and the twist number is a number of twists corresponding to a twisting method of the skeleton material to form a cord;

[0043] a calculation unit 20 for obtaining an equivalent cross-sectional area according to the product of the single twist cross-sectional area and the number of twists;

[0044] The simulation unit 30 is configured to perform simulation calculation on the mass of the skeleton material at least according to the equivalent cross-sectional area, and obtain a simulation result of the mass of the skeleton material.

[0045] In the above-mentioned tire carcass material quality simulation device, an acquisition unit acquires the single-twist cross-sectional area and twist count of the tire carcass material, where the single-twist cross-sectional area is the cross-sectional area of ​​the carcass material when twisted alone, and the twist count is the number of twists corresponding to the twisting method of the carcass material to form a cord; a calculation unit obtains an equivalent cross-sectional area based on the product of the single-twist cross-sectional area and the twist count; and a simulation unit simulates and calculates the carcass material's quality based on at least the equivalent cross-sectional area to obtain a carcass material quality simulation result. This device calculates the product of the single-twist cross-sectional area and the twist count to obtain an equivalent cross-sectional area, and uses the equivalent cross-sectional area instead of the cross-sectional area of ​​the cord for simulation calculation, eliminating the influence of the rubber coating in the cord. This makes the carcass material quality simulation result closer to the actual carcass material quality, solving the problem of high distortion in carcass material quality simulation in the prior art.

[0046] In one embodiment of the present application, Figure 2 As shown, the above-mentioned simulation unit includes an acquisition module, a building module and a simulation module, wherein the above-mentioned acquisition module is used to obtain the material distribution map of the above-mentioned tire; the above-mentioned building module is used to construct the solid model of the above-mentioned tire according to the above-mentioned material distribution map; the finite element model is established according to the above-mentioned solid model; the above-mentioned simulation module is used to input the above-mentioned equivalent cross-sectional area into the above-mentioned finite element model for simulation calculation to obtain the quality simulation result of the above-mentioned skeleton material. Specifically, the above-mentioned method realizes the equivalent conversion between the finite element data and the actual data of the tire skeleton material quality, which is a link in the overall tire finite element simulation analysis process. The process is between the tire solid model and the finite element model processing. After the tire is processed with the material distribution map, the solid model is established, and the finite element model is established and submitted for simulation calculation, the corresponding simulation results are output, and the quality of the skeleton material is output separately at the same time. The equivalent conversion link makes the skeleton material quality simulation result closer to the actual skeleton material quality.

[0047] In one embodiment of the present application, the simulation module is used to input the density of the skeleton material, the equivalent cross-sectional area, the density of the cord, and the distribution angle of the cord into the finite element model for simulation calculation to obtain the mass simulation result of the skeleton material. Specifically, Figure 2 As shown, the density of the above-mentioned skeleton material, the above-mentioned equivalent cross-sectional area, the density of the above-mentioned cords, and the distribution angle of the above-mentioned cords are all material properties of the skeleton material. The density of the above-mentioned skeleton material, the above-mentioned equivalent cross-sectional area, the density of the above-mentioned cords, and the distribution angle of the above-mentioned cords are input into the material property assignment module in the finite element software for simulation calculation to obtain the mass simulation result of the above-mentioned skeleton material.

[0048] In one embodiment of the present application, the above-mentioned solid model includes the above-mentioned cord, and the above-mentioned device also includes an optimization unit, and the above-mentioned optimization unit includes a first determination module and a second determination module, wherein the above-mentioned first determination module is used to determine the equivalent cross-section according to the cross-section of the cord formed by the above-mentioned skeleton material before establishing a finite element model according to the above-mentioned solid model, the above-mentioned equivalent cross-section has the same center of gravity and shape as the cross-section of the above-mentioned cord, and the area of ​​the above-mentioned equivalent cross-section is equal to the above-mentioned equivalent cross-sectional area; the above-mentioned second determination module is used to determine the boundary of the above-mentioned cord in the above-mentioned solid model according to the above-mentioned equivalent cross-section, and obtain the above-mentioned solid model after optimization. Specifically, the cord made of a single-filament double strand is as follows Figure 3 As shown, taking this cord as an example, Figure 4 As shown, A1 is the cross-section of the above-mentioned cord, L1 is the cross-section of the above-mentioned cord, A2 is the cross-section of the single twist, A3 is the equivalent cross-section, L3 is the edge line of the equivalent cross-section, and the edge line L3 of the equivalent cross-section is used as the boundary of the above-mentioned cord in the above-mentioned solid model, so as to optimize the above-mentioned solid model to further reduce the distortion of the simulation.

[0049] In one embodiment of the present application, the above-mentioned solid model includes a belt layer, a carcass, a cap strip and a zero-degree band. The above-mentioned belt layer, the above-mentioned carcass, the above-mentioned cap strip and the above-mentioned zero-degree band all include the above-mentioned cords. The above-mentioned equivalent cross-sections of the above-mentioned cords in the above-mentioned belt layer, the above-mentioned carcass, the above-mentioned cap strip and the above-mentioned zero-degree band are all circular. Specifically, the cords in different structures of the above-mentioned solid model adopt different twisting methods, resulting in different cross-sectional shapes of the cords. If the cross-sections of the above-mentioned cords in the above-mentioned belt layer, the above-mentioned carcass, the above-mentioned cap strip and the above-mentioned zero-degree band are circular, then the corresponding equivalent cross-sections are also circular. Of course, if the twisting method of the above-mentioned structure is changed to cause the cross-sectional shape to change, the shape of the corresponding equivalent cross-section will also change accordingly, and the boundary of the corresponding cord will also change accordingly, so as to further reduce the distortion of the simulation.

[0050] In one embodiment of the present application, the solid model further includes tire beads, each of which includes the tire cords, and the equivalent cross-sections of the tire cords in the tire beads are all trapezoidal. Specifically, if the cross-section of the tire cords in the tire beads is trapezoidal, the corresponding equivalent cross-section is also trapezoidal. Of course, if the twisting method of the tire beads is changed, resulting in a change in cross-sectional shape, the shape of the equivalent cross-section will also change accordingly, and the corresponding cord boundaries will also change accordingly, thereby further reducing simulation distortion.

[0051] In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the technical solution of the present application will be described below with reference to specific embodiments.

[0052] Example 1

[0053] Taking a 205 / 55R16 semi-steel tire as an example, the simulation method of the tire frame material quality of this embodiment includes the following steps:

[0054] S1. Use existing experimental testing methods to test the density, single filament cross-sectional diameter, and cord density (EPI) of the tire's 1# belt layer (RFBELT1), 2# belt layer (RFBELT2), 1# carcass (RFPLY1), 2# carcass (RFPLY2), bead, and cap strip, and extract and organize the relevant data.

[0055] S2. Perform equivalent area conversion based on the detected tire 1# belt layer, 2# belt layer, 1# carcass, 2# carcass, bead, and cap strip cross-section data;

[0056] S2.1, 1# belt layer, 2# belt layer, 1# carcass, 2# carcass, tire bead and cap strip are all twisted in single-filament two-ply twist. Taking 1# belt layer as an example, its specification is 1*2*0.3ST, its single-filament diameter is 0.3mm, and the single-filament area calculated according to the circular area formula is 0.070685mm2. The single-twist cross-sectional area A2 is 0.14137mm2. This area does not include the single-twist rubber coating area A1. The single-twist rubber coating area A1 is the area of ​​the original cross-sectional boundary minus the single-twist cross-sectional area A2, which is 0.14137mm2.

[0057] S2.2. Convert the single-twist cross-sectional area A2 of the 1# belt layer to an equivalent skeleton boundary L2 according to the circular area calculation formula. The circle formed by the equivalent skeleton boundary L2 is a circle. The cross-sectional area of ​​the circle is the converted equivalent cross-sectional area A3, and its converted diameter is 0.42426 mm.

[0058] S3. Input the data including the density of the 1# belt layer, the equivalent cross-sectional area A3, the density of the cords, and the distribution angle of the cords into the material property assignment module of the finite element software. The relevant data are defined as follows:

[0059] *parameter

[0060] D=0.42426

[0061] A=A3

[0062] *Material,name=1_belt

[0063] *Density

[0064] 3.930e-09,

[0065] *Elastic

[0066] 19608,0.3

[0067] S4, S1-S3 achieve the equivalent conversion between the finite element data and actual data of the tire skeleton material quality. This is a link in the overall tire finite element simulation analysis process, which lies between the tire solid model and the finite element model processing. After processing the tire material distribution map, establishing the solid model and the finite element model and submitting them for simulation calculation, the corresponding simulation results are output, and the quality of each skeleton material is output separately, as shown in Table 1.

[0068] Table 1

[0069]

[0070]

[0071] As can be seen from the above table, by comparing the quality simulation data results of each skeleton material with the experimental data results, compared with the error of the quality simulation results of the prior art, the quality simulation results of this embodiment have greatly approached the actual quality of the skeleton material and have achieved quite good optimization results.

[0072] The above-mentioned tire frame material quality simulation device includes a processor and a memory. The above-mentioned acquisition unit, calculation unit and simulation unit are all stored in the memory as program units, and the processor executes the above-mentioned program units stored in the memory to realize corresponding functions.

[0073] The processor includes a core, which retrieves the corresponding program unit from the memory. One or more cores can be provided, and the problem of large distortion in the mass simulation of the skeleton material in the prior art can be solved by adjusting the core parameters.

[0074] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0075] An embodiment of the present invention provides a computer-readable storage medium having a program stored thereon, which implements the above method when executed by a processor.

[0076] An embodiment of the present invention provides a processor, which is used to run a program, wherein the method is executed when the program is run.

[0077] An embodiment of the present invention provides a finite element simulation system. The device includes a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, at least the following steps are performed:

[0078] Step S101, obtaining a single twist cross-sectional area and a twist number of a tire carcass material, wherein the single twist cross-sectional area is a cross-sectional area of ​​the carcass material when twisted alone, and the twist number is a number of twists corresponding to a twisting method of the carcass material to form a cord;

[0079] Step S102, obtaining an equivalent cross-sectional area according to the product of the single twist cross-sectional area and the number of twists;

[0080] Step S103 , performing simulation calculation on the mass of the skeleton material at least according to the equivalent cross-sectional area, to obtain a simulation result of the mass of the skeleton material.

[0081] The present application also provides a computer program product, which, when executed on a data processing device, is adapted to execute a program for initializing at least the following method steps:

[0082] Step S101, obtaining a single twist cross-sectional area and a twist number of a tire carcass material, wherein the single twist cross-sectional area is a cross-sectional area of ​​the carcass material when twisted alone, and the twist number is a number of twists corresponding to a twisting method of the carcass material to form a cord;

[0083] Step S102, obtaining an equivalent cross-sectional area according to the product of the single twist cross-sectional area and the number of twists;

[0084] Step S103 , performing simulation calculation on the mass of the skeleton material at least according to the equivalent cross-sectional area, to obtain a simulation result of the mass of the skeleton material.

[0085] In the above embodiments of the present invention, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0086] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only exemplary. For example, the division of the above-mentioned units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0087] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0088] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0089] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a computer-readable storage medium and includes a number of instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the above-mentioned methods of each embodiment of the present invention. The aforementioned computer-readable storage medium includes: various media that can store program codes, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk.

[0090] From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

[0091] 1) In the method for simulating the quality of the tire skeleton material of the present application, first, the single twist cross-sectional area and the number of twists of the skeleton material of the tire are obtained, the single twist cross-sectional area being the cross-sectional area of ​​the skeleton material when twisted alone, and the number of twists being the number of twists corresponding to the twisting method of the skeleton material to form the cord; then, the equivalent cross-sectional area is obtained based on the product of the single twist cross-sectional area and the number of twists; finally, the mass of the skeleton material is simulated and calculated at least based on the equivalent cross-sectional area to obtain the simulation result of the mass of the skeleton material. This method calculates the product of the single twist cross-sectional area and the number of twists to obtain the equivalent cross-sectional area, and uses the equivalent cross-sectional area instead of the cross-sectional area of ​​the cord for simulation calculation, thereby eliminating the influence of the rubber coating in the cord, making the simulation result of the mass of the skeleton material closer to the actual mass of the skeleton material, and solving the problem of high distortion in the mass simulation of the skeleton material in the prior art.

[0092] 2) In the device for simulating the quality of the tire skeleton material of the present application, the acquisition unit acquires the single-twist cross-sectional area and the number of twists of the skeleton material of the tire, the single-twist cross-sectional area being the cross-sectional area of ​​the skeleton material when twisted alone, and the number of twists being the number of twists corresponding to the twisting method of the skeleton material to form the cord; the calculation unit obtains the equivalent cross-sectional area based on the product of the single-twist cross-sectional area and the number of twists; the simulation unit simulates and calculates the quality of the skeleton material based on at least the equivalent cross-sectional area to obtain a simulation result of the quality of the skeleton material. The device calculates the product of the single-twist cross-sectional area and the number of twists to obtain the equivalent cross-sectional area, and uses the equivalent cross-sectional area instead of the cross-sectional area of ​​the cord for simulation calculation, thereby eliminating the influence of the rubber coating in the cord, making the simulation result of the quality of the skeleton material closer to the actual quality of the skeleton material, and solving the problem of high distortion in the quality simulation of the skeleton material in the prior art.

[0093] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A method for simulating tire frame material quality, characterized in that: include: Obtaining a single twist cross-sectional area and a twist number of a tire skeleton material, wherein the single twist cross-sectional area is a cross-sectional area of ​​the skeleton material when twisted alone, and the twist number is a number of twists corresponding to a twisting method of the skeleton material to form a cord; Obtaining an equivalent cross-sectional area according to the product of the single twist cross-sectional area and the number of twists; Performing simulation calculation on the mass of the skeleton material at least according to the equivalent cross-sectional area to obtain a simulation result of the mass of the skeleton material; Performing a simulation calculation on the mass of the skeleton material at least based on the equivalent cross-sectional area to obtain a mass simulation result of the skeleton material, comprising: obtaining a material distribution map of the tire; constructing a solid model of the tire based on the material distribution map; establishing a finite element model based on the solid model; and inputting at least the equivalent cross-sectional area into the finite element model for simulation calculation to obtain a mass simulation result of the skeleton material. The solid model includes the cord. Before establishing a finite element model based on the solid model, the method further includes: determining an equivalent cross-section based on the cross-section of the cord formed by the skeleton material, the equivalent cross-section having the same center of gravity and shape as the cross-section of the cord, and the area of ​​the equivalent cross-section being equal to the equivalent cross-sectional area; determining the boundary of the cord in the solid model based on the equivalent cross-section to obtain the optimized solid model.

2. The method according to claim 1, characterized in that At least inputting the equivalent cross-sectional area into the finite element model for simulation calculation to obtain a mass simulation result of the skeleton material includes: The density of the skeleton material, the equivalent cross-sectional area, the density of the cords, and the distribution angle of the cords are input into the finite element model for simulation calculation to obtain a mass simulation result of the skeleton material.

3. The method according to claim 1, characterized in that The solid model includes a belt layer, a carcass, a cap strip and a zero-degree belt, and the belt layer, the carcass, the cap strip and the zero-degree belt all include the cords, and the equivalent cross-sections of the cords in the belt layer, the carcass, the cap strip and the zero-degree belt are all circular.

4. The method according to claim 1, wherein The solid model further includes tire beads, each of the tire beads includes the cord, and the equivalent cross-sections of the cords in the tire beads are all trapezoidal.

5. A device for simulating the quality of tire frame materials, characterized in that: include: an acquisition unit, configured to acquire a single twist cross-sectional area and a twist number of a tire skeleton material, wherein the single twist cross-sectional area is a cross-sectional area of ​​the skeleton material when twisted alone, and the twist number is a number of twists corresponding to a twisting method of forming a cord of the skeleton material; a calculation unit, configured to obtain an equivalent cross-sectional area according to the product of the single-twist cross-sectional area and the number of twists; a simulation unit, configured to perform a simulation calculation on the mass of the skeleton material at least according to the equivalent cross-sectional area, and obtain a simulation result of the mass of the skeleton material; The simulation unit includes an acquisition module, a building module, and a simulation module, wherein the acquisition module is used to acquire a material distribution map of the tire; the building module is used to construct a solid model of the tire based on the material distribution map; and a finite element model is established based on the solid model; and the simulation module is used to input at least the equivalent cross-sectional area into the finite element model for simulation calculation to obtain a mass simulation result of the skeleton material. The solid model includes the cord, and the device also includes an optimization unit, which includes a first determination module and a second determination module, wherein the first determination module is used to determine the equivalent cross-section based on the cross-section of the cord formed by the skeleton material before establishing a finite element model based on the solid model, the equivalent cross-section has the same center of gravity and shape as the cross-section of the cord, and the area of ​​the equivalent cross-section is equal to the equivalent cross-sectional area; the second determination module is used to determine the boundary of the cord in the solid model based on the equivalent cross-section to obtain the optimized solid model.

6. A computer-readable storage medium, characterized in that The computer-readable storage medium includes a stored program, wherein the program executes the method according to any one of claims 1 to 4.

7. A processor, characterized in that: The processor is configured to run a program, wherein the program executes the method according to any one of claims 1 to 4 when running.

8. A finite element simulation system, characterized in that: include: One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include instructions for executing the method according to any one of claims 1 to 4.

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