Method, device and non-transitory storage medium for simulating vulcanization of a tire

Abstract

The application discloses a vulcanization simulation method and device of a tire and a nonvolatile storage medium. The method comprises the following steps: acquiring a heat conduction characteristic parameter of a skeleton material of a target tire, the heat conduction characteristic parameter comprising at least one of a thermal conductivity coefficient of the skeleton material and a geometric arrangement characteristic of the skeleton material; determining an equivalent thermal conductivity coefficient of the target tire according to the heat conduction characteristic parameter; assigning the equivalent thermal conductivity coefficient to a grid unit in a finite element grid model, and solving the finite element grid model according to temperature process data in a vulcanization process to obtain temperature distribution result data of the vulcanization process; and determining a vulcanization degree distribution of different positions of the tire according to the temperature distribution result data. The application solves the technical problem of low simulation precision caused by the fact that the vulcanization simulation model in the related art does not consider the influence of skeleton material distribution on temperature transfer in the vulcanization process.

Description

Technical Field

[0001] This application relates to the field of tire finite element simulation, and more specifically, to a tire vulcanization simulation method, apparatus, and non-volatile storage medium. Background Technology

[0002] In the tire manufacturing process, the vulcanization process applies customized temperature and pressure to the raw rubber of the tire carcass. Since the tire tread, sidewall, inner liner and other rubber components are all different types of rubber with a certain thickness, and rubber has poor thermal conductivity, the degree of vulcanization of the rubber in different parts of the tire is different after vulcanization, which in turn affects the mechanical properties of the tire.

[0003] Currently, the evaluation of the degree of rubber vulcanization at different locations on a tire mainly involves obtaining temperature data during the vulcanization process. The degree of vulcanization of the rubber compound at different locations on the tire is calculated based on the temperature data. However, the finite element simulation models of tire vulcanization in related technologies generally do not take into account the type of skeleton material. The spacing and angle of the skeleton material affect the temperature transfer during the vulcanization process, resulting in low simulation accuracy.

[0004] There is currently no effective solution to the above problems. Summary of the Invention

[0005] This application provides a method, apparatus, and non-volatile storage medium for simulating tire vulcanization, to at least solve the technical problem of low simulation accuracy caused by the fact that vulcanization simulation models in related technologies do not consider the influence of skeleton material distribution on temperature transfer during the vulcanization process.

[0006] According to one aspect of the embodiments of this application, a method for simulating the vulcanization of a tire is provided, comprising: obtaining thermal conductivity parameters of the skeleton material of a target tire, the thermal conductivity parameters including at least one of the following: thermal conductivity of the skeleton material, geometric arrangement characteristics of the skeleton material; determining the equivalent thermal conductivity of the target tire based on the thermal conductivity parameters, wherein the equivalent thermal conductivity includes a first equivalent thermal conductivity along a first direction, a second equivalent thermal conductivity along a second direction, and a third equivalent thermal conductivity along a third direction, the first direction being a direction extending along the skeleton material, the second direction being a direction perpendicular to the first direction and within the laying plane of the skeleton material, and the third direction being a direction perpendicular to the first direction and perpendicular to the laying plane; assigning the equivalent thermal conductivity to the mesh elements in a finite element mesh model, and solving the finite element mesh model based on the temperature process data during the vulcanization process to obtain temperature distribution result data of the vulcanization process; and determining the vulcanization degree distribution at different locations of the tire based on the temperature distribution result data.

[0007] Optionally, determining the equivalent thermal conductivity of the target tire based on thermal conductivity parameters includes: dividing the target tire into tire sub-components based on the spacing of the carcass materials; determining the first equivalent thermal conductivity of the tire sub-component based on the ratio of the first area of ​​the cross-section of the carcass material perpendicular to the first direction and the second area of ​​the cross-section of the rubber compound perpendicular to the first direction to the third area of ​​the cross-section of the tire sub-component perpendicular to the first direction; determining the second equivalent thermal conductivity of the tire sub-component based on the thermal resistance of the carcass material and the rubber compound in the second direction; and determining the third equivalent thermal conductivity of the tire sub-component based on the thermal resistance of the carcass material and the rubber compound in the third direction.

[0008] Optionally, determining the first equivalent thermal conductivity corresponding to the tire sub-component includes: determining a first weight based on the ratio of the first area to the third area; determining a second weight based on the ratio of the second area to the third area; and determining the first equivalent thermal conductivity based on the product of the first weight and the thermal conductivity of the skeleton material, and the product of the second weight and the thermal conductivity of the rubber compound.

[0009] Optionally, the first equivalent thermal conductivity is determined according to the following formula: in, The first equivalent thermal conductivity, The thickness of the tire sub-component. The width of the tire sub-component. For the spacing between the rows, The equivalent side length of the skeleton material. The thermal conductivity of the rubber compound is given by [reference needed]. The thermal conductivity of the skeleton material is... The diameter of the skeleton material.

[0010] Optionally, before determining the first equivalent thermal conductivity, the method further includes: determining the equivalent side length of the skeleton material in the tire sub-component, wherein the equivalent side length is the side length obtained after converting the circular cross-section of the skeleton material into a square cross-section; and determining the first area of ​​the skeleton material in the tire sub-component based on the equivalent side length.

[0011] Optionally, determining the second equivalent thermal conductivity of the tire sub-component based on the thermal resistance of the skeleton material and rubber compound in the second direction includes: identifying the rubber compound in the tire sub-component connected in series with the skeleton material in the second direction as the first sub-rubber compound; identifying the rubber compound in the tire sub-component other than the first sub-rubber compound as the second sub-rubber compound, and the thermal resistance of the second sub-rubber compound as the second thermal resistance; taking the sum of the thermal resistance of the first sub-rubber compound and the thermal resistance of the skeleton material as the first thermal resistance; taking the thermal resistance obtained by connecting the first thermal resistance and the second thermal resistance in parallel as the second equivalent thermal resistance of the tire sub-component in the second direction; and determining the second equivalent thermal conductivity based on the second equivalent thermal resistance in the second direction.

[0012] Alternatively, the second equivalent thermal conductivity is determined according to the following formula: in, The equivalent thermal resistance in the second direction. The second thermal resistance, The thermal resistance of the first component. For the thermal resistance of the skeleton material, The second equivalent thermal conductivity, This is the length of the tire sub-component through which heat flows in the second direction. This is the cross-sectional area of ​​the tire sub-component through which heat flows in the second direction.

[0013] Optionally, the third equivalent thermal conductivity of the tire sub-component is determined based on the thermal resistance of the skeleton material and the rubber compound in the third direction. This includes: identifying the rubber compound connected in series with the skeleton material in the third direction within the tire sub-component as the third sub-rubber compound; identifying the rubber compound other than the third sub-rubber compound in the tire sub-component as the fourth sub-rubber compound, and the thermal resistance of the fourth sub-rubber compound as the fourth thermal resistance; using the sum of the thermal resistance of the third sub-rubber compound and the thermal resistance of the skeleton material as the third thermal resistance; using the thermal resistance obtained by connecting the third thermal resistance and the fourth thermal resistance in parallel as the third equivalent thermal resistance of the tire sub-component in the third direction; and determining the third equivalent thermal conductivity based on the third equivalent thermal resistance in the third direction.

[0014] Alternatively, the third equivalent thermal conductivity is determined according to the following formula: in, For the third-party equivalent thermal resistance, It is the fourth thermal resistance. The thermal resistance of the third component. For the thermal resistance of the skeleton material, The third equivalent thermal conductivity, The length of the tire sub-component through which heat flows upwards on a third-party axis. This is the cross-sectional area of ​​the tire sub-component through which heat flows upwards in a third direction.

[0015] Optionally, the thermal resistance of any material in any direction within a tire sub-component is determined by the following formula: in, This represents the thermal resistance of the material in this direction. The length of the material through which heat flows in this direction. Let be the cross-sectional area of ​​the material through which heat flows in this direction. The thermal conductivity of the material is given by the material, and any material includes at least one of the following: a skeleton material and a binder.

[0016] According to another aspect of the embodiments of this application, a tire vulcanization simulation device is also provided, comprising: a first processing module for acquiring thermal conductivity characteristic parameters of the skeleton material of a target tire, the thermal conductivity characteristic parameters including at least one of the following: thermal conductivity of the skeleton material, geometric arrangement characteristics of the skeleton material; a second processing module for determining the equivalent thermal conductivity of the target tire based on the thermal conductivity characteristic parameters, wherein the equivalent thermal conductivity includes a first equivalent thermal conductivity along a first direction, a second equivalent thermal conductivity along a second direction, and a third equivalent thermal conductivity along a third direction, the first direction being the direction extending along the skeleton material, the second direction being the direction perpendicular to the first direction and within the laying plane of the skeleton material, and the third direction being the direction perpendicular to the first direction and perpendicular to the laying plane; a third processing module for assigning the equivalent thermal conductivity to the mesh elements in a finite element mesh model, and solving the finite element mesh model based on the temperature process data during the vulcanization process to obtain temperature distribution result data of the vulcanization process; and a fourth processing module for determining the vulcanization degree distribution at different locations of the tire based on the temperature distribution result data.

[0017] According to another aspect of the embodiments of this application, a non-volatile storage medium is also provided, wherein a program is stored in the non-volatile storage medium, wherein the program controls the device where the non-volatile storage medium is located to execute a tire vulcanization simulation method when it runs.

[0018] According to another aspect of the embodiments of this application, an electronic device is also provided, including: a memory and a processor, the processor being configured to run a program stored in the memory, wherein the program executes a tire vulcanization simulation method during runtime.

[0019] According to another aspect of the embodiments of this application, a computer program product is also provided, including a computer program that, when executed by a processor, implements a method for simulating the vulcanization of tires in a petrochemical plant.

[0020] In this embodiment, the thermal conductivity parameters of the target tire's skeleton material are obtained. These parameters include at least one of the following: the thermal conductivity of the skeleton material and the geometric arrangement characteristics of the skeleton material. The equivalent thermal conductivity of the target tire is determined based on these parameters. The equivalent thermal conductivity includes a first equivalent thermal conductivity along a first direction, a second equivalent thermal conductivity along a second direction, and a third equivalent thermal conductivity along a third direction. The first direction is the direction extending along the skeleton material, the second direction is perpendicular to the first direction and lies within the laying plane of the skeleton material, and the third direction is perpendicular to both the first direction and the laying plane. The equivalent thermal conductivity is then assigned to the mesh in the finite element mesh model. The finite element mesh model is solved based on the temperature process data during vulcanization to obtain the temperature distribution data of the vulcanization process. Based on the temperature distribution data, the distribution of vulcanization degree at different locations of the tire is determined. By calculating the equivalent thermal conductivity of the skeleton material components according to the type, spacing and angle of the corresponding skeleton material of the tire, the equivalent thermal conductivity is written into the simulation model. This achieves the goal of accurately reflecting the influence of the skeleton material on heat transfer in the finite element simulation of tire vulcanization, thereby improving the technical effect of temperature field calculation accuracy of the tire vulcanization simulation model. This solves the technical problem of low simulation accuracy caused by the fact that the vulcanization simulation model in related technologies does not consider the influence of skeleton material distribution on temperature transfer during the vulcanization process. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of a computer terminal according to an embodiment of this application;

[0023] Figure 2 This is a schematic flowchart of a tire vulcanization simulation method provided according to an embodiment of this application;

[0024] Figure 3 This is a schematic diagram of a cord spacing in a tire component containing a skeleton material according to an embodiment of this application;

[0025] Figure 4 This is a schematic diagram of a quarter-size model of a component containing a skeleton material according to an embodiment of this application;

[0026] Figure 5 This is a schematic diagram of a thermal resistance model of a rubber and skeleton material according to an embodiment of this application;

[0027] Figure 6 This is a schematic diagram of a finite element mesh model for simulating a tire vulcanization process according to an embodiment of this application;

[0028] Figure 7 This is a schematic diagram of the temperature change curve of a specified unit of rubber compound B in a simulation model provided according to an embodiment of this application;

[0029] Figure 8 This is a schematic diagram of the vulcanization degree change curve of a specified unit of rubber compound B in a simulation model provided according to an embodiment of this application;

[0030] Figure 9 This is an overall flowchart of a method for optimizing tire vulcanization simulation considering equivalent thermal conductivity, provided according to an embodiment of this application.

[0031] Figure 10 This is a schematic diagram of a tire vulcanization simulation device provided according to an embodiment of this application. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] To better understand the embodiments of this application, the technical terms involved in the embodiments of this application are explained below:

[0035] In related technologies, evaluating the degree of rubber vulcanization at different locations on a tire mainly involves obtaining temperature data from the vulcanization process. The first method is the thermocouple embedding temperature measurement experiment, where a temperature measuring wire is embedded in the green tire blank before vulcanization. Temperature data is transmitted through the wire during vulcanization. However, this method can only obtain vulcanization degree values ​​at a limited number of measuring points, resulting in low accuracy. The second method is simulation, which uses finite element analysis (FEM) to calculate the temperature field during tire vulcanization. This can obtain temperature data at any location on the tire cross-section, providing more comprehensive data compared to experimental methods. Both methods calculate the vulcanization degree of the rubber compound at different locations on the tire based on temperature data. However, current finite element simulations for tire vulcanization still have some problems: the simulation model generally does not consider the type of skeleton material, and the spacing and angle of the skeleton material affect temperature transmission during vulcanization, thus impacting simulation accuracy.

[0036] To address this issue, relevant solutions are provided in the embodiments of this application, which are described in detail below.

[0037] According to an embodiment of this application, a method embodiment for simulating the vulcanization of a tire is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0038] The methods and embodiments provided in this application can be executed on mobile terminals, computer terminals, or similar computing devices.

[0039] Figure 1 A hardware block diagram of a computer terminal for implementing a tire vulcanization simulation method is shown. Figure 1 As shown, the computer terminal 10 may include a processor 102, a memory 104 for storing data, and a transmission module 106 for communication functions. The processor 102 may include one or more processors. For ease of explanation, Figure 1 The diagram illustrates multiple processors, including a first processor 102a, a second processor 102b, ..., an nth processor 102n. The processor 102 may be a processing device including, but not limited to, a microcontroller unit (MCU) or a field-programmable gate array (FPGA).

[0040] In addition, a computer terminal may also include: a display, an input / output interface (I / O interface), a Universal Serial Bus (USB) port (which may be included as one of the ports of a BUS bus), a network interface, a power supply, and / or a camera. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the aforementioned electronic device. For example, computer terminal 10 may also include... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0041] It should be noted that the aforementioned one or more processors 102 and / or other data processing circuits may be referred to herein as "data processing circuits". These data processing circuits may be embodied, in whole or in part, as software, hardware, firmware, or any other combination thereof. Furthermore, the data processing circuits may be a single, independent processing module, or may be integrated, in whole or in part, into any other element within the computer terminal 10. As described in the embodiments of this application, the data processing circuits serve as a form of processor control (e.g., selection of a variable resistor termination path connected to an interface).

[0042] The memory 104 can be used to store software programs and modules of application software, such as the program instructions / data storage device corresponding to the tire vulcanization simulation method in this embodiment. The processor 102 executes various functional applications and data processing by running the software programs and modules stored in the memory 104, thereby realizing the aforementioned tire vulcanization simulation method. The memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the computer terminal 10 via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0043] The transmission module 106 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by the communication provider of the computer terminal 10. In one example, the transmission module 106 includes a network interface controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission module 106 may be a radio frequency (RF) module, used for data interaction with external networks or devices via wired and / or wireless network connections.

[0044] The display can be, for example, a touchscreen liquid crystal display (LCD), which allows the user to interact with the user interface of the computer terminal 10. In addition, the computer terminal 10 can also connect to a cursor control device and a keyboard via an input / output interface. The cursor control device (e.g., a mouse, trackball, or touchpad) is mainly used to transmit directional information and command selections to the terminal and control the movement of the cursor on the display; the keyboard is mainly used to receive letters, numbers, and other control commands input by the user, thereby enabling interaction between the user and the computer terminal 10.

[0045] It should be noted here that, in some optional embodiments, the above... Figure 1 The computer terminal shown may include hardware elements (including circuitry), software elements (including computer code stored on a computer-readable medium), or a combination of both hardware and software elements. It should be noted that... Figure 1 This is only one instance of a specific particular instance, and is intended to illustrate the types of components that may exist in the aforementioned computer terminal.

[0046] Under the aforementioned operating environment, embodiments of this application provide a method for simulating tire vulcanization, such as... Figure 2 As shown, the method includes the following steps:

[0047] Step S202: Obtain the thermal conductivity parameters of the skeleton material of the target tire. The thermal conductivity parameters include at least one of the following: thermal conductivity of the skeleton material and geometric arrangement characteristics of the skeleton material.

[0048] Step S204: Determine the equivalent thermal conductivity of the target tire based on the thermal conductivity characteristic parameters. The equivalent thermal conductivity includes a first equivalent thermal conductivity along a first direction, a second equivalent thermal conductivity along a second direction, and a third equivalent thermal conductivity along a third direction. The first direction is the direction extending along the skeleton material, the second direction is the direction perpendicular to the first direction and within the laying plane of the skeleton material, and the third direction is the direction perpendicular to the first direction and perpendicular to the laying plane.

[0049] Optionally, different types of skeleton materials correspond to different thermal conductivity. By obtaining the type of skeleton material, the spacing e_i, and the angle ang_i corresponding to the target tire, the equivalent thermal conductivity of the skeleton material component can be calculated. The equivalent thermal conductivity of the rubber material corresponding to the skeleton material component is written into the simulation model (i.e., the finite element mesh model). By considering the thermal conductivity of the skeleton material in three directions, the accuracy of the simulation is improved. Among them, the first equivalent thermal conductivity along the cord direction (i.e., along the direction of the skeleton material extension) is K1, the second equivalent thermal conductivity perpendicular to the cord direction and in the plane of the rubber component (i.e., the laying plane of the skeleton material) is K2, and the third equivalent thermal conductivity perpendicular to the cord direction and in the plane of the rubber component is K3.

[0050] In the technical solution provided in step S204, determining the equivalent thermal conductivity of the target tire based on thermal conductivity parameters includes: dividing the target tire into tire sub-components based on the spacing of the skeleton materials; determining the first equivalent thermal conductivity of the tire sub-component based on the ratio of the first area of ​​the cross-section of the skeleton material perpendicular to the first direction and the second area of ​​the rubber compound perpendicular to the first direction to the third area of ​​the cross-section of the tire sub-component perpendicular to the first direction; determining the second equivalent thermal conductivity of the tire sub-component based on the thermal resistance of the skeleton material and rubber compound in the second direction; and determining the third equivalent thermal conductivity of the tire sub-component based on the thermal resistance of the skeleton material and rubber compound in the third direction.

[0051] Optionally, since different types of skeleton materials have different thermal conductivity, the thermal conductivity of the skeleton material itself is determined by obtaining the type of skeleton material corresponding to the target tire (e.g., cord code C1). The thermal conductivity of the skeleton material is the thermophysical property value of the skeleton material itself, and the thermal conductivity of the rubber compound is the thermophysical property value of the rubber compound itself.

[0052] Optionally, taking a tire component containing cords C1 (skeleton material) and rubber compound B as an example (where the cords are evenly spaced), dividing the target tire into tire sub-components based on the spacing of the skeleton material includes: dividing according to the cord spacing, and taking a portion of one cord spacing for study. Figure 3 A schematic diagram of a model of a cord spacing in a tire component containing a skeleton material is shown, as follows. Figure 3 As shown, the shaded area in the middle represents the cord (for ease of subsequent calculations, the circular cross-section of the cord has been converted to a square cross-section, with an equivalent side length of...). The blank area is the adhesive material; the width of this component with a single cord spacing is the cord spacing. The thickness of the component is determined by dividing the width based on a single cord spacing. In the calculation process, one-quarter of the component with the aforementioned cord spacing is taken for study. Figure 4 A schematic diagram of a quarter-pitch model (i.e., a tire sub-component) of a component containing skeleton material is shown, as follows. Figure 4 As shown, this tire sub-component is obtained by dividing a cord spacing into two centered sections in both the thickness and width directions. The shaded area in the lower left corner represents the skeleton material (side length is...). The remaining blank areas are rubber materials.

[0053] As an optional implementation, determining the first equivalent thermal conductivity corresponding to the tire sub-component includes: determining a first weight based on the ratio of the first area to the third area; determining a second weight based on the ratio of the second area to the third area; and determining the first equivalent thermal conductivity based on the product of the first weight and the thermal conductivity of the skeleton material, and the product of the second weight and the thermal conductivity of the rubber compound.

[0054] Optionally, the first equivalent thermal conductivity is determined according to the following formula: in, The first equivalent thermal conductivity, The thickness of the tire sub-component. The width of the tire sub-component. For the spacing between the rows, The equivalent side length of the skeleton material. The thermal conductivity of the rubber compound is given by [reference needed]. The thermal conductivity of the skeleton material is... The diameter of the skeleton material, Pi is the mathematical constant of a circle.

[0055] Optionally, in calculating the equivalent thermal conductivity of the component, the anisotropic thermal conductivity of the skeleton material is considered, therefore, thermal conductivity in three directions is set, wherein the first equivalent thermal conductivity K1 is calculated using the area ratio method. Let be the first area of ​​the skeleton material. This is the second area of ​​the rubber compound. (This refers to the third area of ​​the tire sub-component).

[0056] As an optional implementation, before determining the first equivalent thermal conductivity, the method further includes: determining the equivalent side length of the skeleton material in the tire sub-component, wherein the equivalent side length is the side length obtained by converting the circular cross-section of the skeleton material into a square cross-section; and determining the first area of ​​the skeleton material in the tire sub-component based on the equivalent side length.

[0057] As an optional implementation, the second equivalent thermal conductivity of the tire sub-component is determined based on the thermal resistance of the skeleton material and the rubber compound in the second direction. This includes: identifying the rubber compound in the tire sub-component connected in series with the skeleton material in the second direction as a first sub-rubber compound; identifying the rubber compound in the tire sub-component other than the first sub-rubber compound as a second sub-rubber compound, and the thermal resistance of the second sub-rubber compound as a second thermal resistance; using the sum of the thermal resistance of the first sub-rubber compound and the thermal resistance of the skeleton material as a first thermal resistance; using the thermal resistance obtained by connecting the first thermal resistance and the second thermal resistance in parallel as the second equivalent thermal resistance of the tire sub-component in the second direction; and determining the second equivalent thermal conductivity based on the second equivalent thermal resistance in the second direction.

[0058] Optionally, Figure 5 A schematic diagram of a thermal resistance model for a rubber and skeleton material is shown, such as... Figure 5 As shown, due to the direction of heat conduction (i.e., the second direction, also known as the second direction), Figure 5 Heat flows through the rubber compound in the direction indicated by the black arrow. Figure 5 The white part of part 1, the first sub-material, flows through the skeleton material ( Figure 5 In the case of the shaded part of part 1, this part of the structure contains both rubber and cord, making it impossible to directly calculate the equivalent thermal conductivity. Therefore, this application considers it as a series thermal resistance, and in the direction of heat conduction, it is regarded as the cord (…). Figure 5 (shaded area in part 1) and rubber ( Figure 5 The white part of part 1 is connected in series as part 1, while the part that is pure rubber in the direction of heat conduction is regarded as part 2 (i.e. the second sub-rubber). The pure rubber between the cords is connected in parallel as part 2 and part 1 to facilitate the calculation of equivalent heat conduction.

[0059] Alternatively, the second equivalent thermal conductivity is determined according to the following formula: in, The equivalent thermal resistance in the second direction. The second thermal resistance, The thermal resistance of the first component. For the thermal resistance of the skeleton material, The second equivalent thermal conductivity, This is the length of the tire sub-component through which heat flows in the second direction. This is the cross-sectional area of ​​the tire sub-component through which heat flows in the second direction.

[0060] As an optional implementation, the third equivalent thermal conductivity of the tire sub-component is determined based on the thermal resistance of the skeleton material and the rubber compound in the third direction. This includes: identifying the rubber compound connected in series with the skeleton material in the third direction within the tire sub-component as the third sub-rubber compound; identifying the rubber compound other than the third sub-rubber compound in the tire sub-component as the fourth sub-rubber compound, and the thermal resistance of the fourth sub-rubber compound as the fourth thermal resistance; using the sum of the thermal resistance of the third sub-rubber compound and the thermal resistance of the skeleton material as the third thermal resistance; using the thermal resistance obtained by connecting the third thermal resistance and the fourth thermal resistance in parallel as the third equivalent thermal resistance of the tire sub-component in the third direction; and determining the third equivalent thermal conductivity based on the third equivalent thermal resistance.

[0061] Alternatively, the third equivalent thermal conductivity is determined according to the following formula: in, For the third-party equivalent thermal resistance, It is the fourth thermal resistance. The thermal resistance of the third component. For the thermal resistance of the skeleton material, The third equivalent thermal conductivity, The length of the tire sub-component through which heat flows upwards on a third-party axis. This is the cross-sectional area of ​​the tire sub-component through which heat flows upwards in a third direction.

[0062] Similar to the calculation of the equivalent thermal conductivity in the second direction, since there is a situation in the heat conduction direction (i.e., the third direction) where heat flows through the rubber compound (i.e., the third sub-compound) and also through the skeleton material, this part of the structure contains both rubber and cord, and the equivalent thermal conductivity cannot be directly calculated. Therefore, this application regards it as a series thermal resistance. In the heat conduction direction, it is regarded as the cord and rubber connected in series as part1 (i.e., the part in the heat conduction direction that is pure rubber is regarded as part2. The pure rubber between the cords (i.e., the fourth sub-compound) is connected in parallel as part2 and part1 to facilitate the calculation of equivalent thermal conductivity.

[0063] As an optional implementation, the thermal resistance of any material in any direction within the tire sub-component is determined by the following formula: in, This represents the thermal resistance of the material in this direction. The length of the material through which heat flows in this direction. Let be the cross-sectional area of ​​the material through which heat flows in this direction. The thermal conductivity of the material is given by the material, and any material includes at least one of the following: a skeleton material and a binder.

[0064] Optionally, the thermal resistance of the skeleton material is RC = lc / (AC) KC), where lc is the length of the section through which heat flows, and AC is the cross-sectional area of ​​the section through which heat flows. The thermal resistance RB of compound B is lb / (AB). KB), where lb is the length of the heat flowing through the rubber section and AB is the cross-sectional area of ​​the heat flowing through the rubber section.

[0065] Step S206: Assign the equivalent thermal conductivity to the mesh elements in the finite element mesh model, and solve the finite element mesh model based on the temperature process data during the vulcanization process to obtain the temperature distribution results data of the vulcanization process.

[0066] Optionally, before assigning the equivalent thermal conductivity to the mesh elements in the finite element mesh model, the process further includes obtaining the finite element mesh model for simulating the tire vulcanization process, obtaining all nodes and element numbers of the tire in the model, thereby constructing the finite element mesh model. The finite element mesh for simulating the tire vulcanization process can be a two-dimensional mesh or a three-dimensional mesh. Figure 6 A schematic diagram of a finite element mesh model for simulating the tire vulcanization process is shown, as follows: Figure 6 As shown, the finite element mesh model includes meshes for three parts: tire 2, vulcanizing mold 1, and vulcanizing capsule 3. The mesh nodes for the three parts are manually numbered. The tire mesh node set is TIRE_Node, and the element set is TIRE_Element, which are distinguished from the mesh nodes and element numbers of the vulcanizing mold and vulcanizing capsule.

[0067] Optionally, Figure 7 The diagram illustrates the temperature change curve of a specified element (B) in the simulation model. The solution to the finite element mesh model based on temperature process data during vulcanization includes: applying the internal and external temperatures (i.e., temperature process data) of the vulcanization process parameters to the vulcanization capsule and mold of the finite element mesh model, respectively, to heat the internal tire through heat conduction. Combining this with the thermal conductivity (i.e., equivalent thermal conductivity) of the corrected skeleton material calculated in the above steps, the heating process at various locations on the tire is calculated, resulting in the vulcanization process temperature data temp_Ei(t) (i.e., temperature distribution results) for each element of the model. Figure 7 As shown.

[0068] Step S208: Determine the vulcanization degree distribution at different locations of the tire based on the temperature distribution data.

[0069] Optionally, Figure 8The diagram illustrates the vulcanization degree variation curve of a specified unit (E310) of rubber compound B in the simulation model. It shows the vulcanization degree variation curve of a specific unit (E310) of rubber compound B during the vulcanization process. The vulcanization degree distribution at different locations of the tire is determined based on temperature distribution data, including calculating the vulcanization degree data CD_Ei(t) (i.e., vulcanization degree distribution) at different locations of the tire using the Arrhenius equation. A Python program is then created to read the vulcanization degree data CD_Ei(t) from each unit of the model. Figure 8 As shown, the system identifies the type of rubber compound corresponding to each unit and outputs the vulcanization degree value of the corresponding rubber compound at different locations, providing an intuitive evaluation of the vulcanization degree of the rubber compound in various parts of the tire.

[0070] Optionally, by establishing a Python program, the distribution of vulcanization degree at different locations of the tire can be written out. By reading the vulcanization degree data CD_Ei(t) of each unit of the model, the vulcanization degree of the rubber compound in each part of the tire can be intuitively evaluated. By establishing a Python program, reading the vulcanization degree data CD_Ei(t) of each unit of the model, and then automatically determining the type of rubber compound to which the unit belongs based on the unit number, the vulcanization degree value of the corresponding rubber compound at different locations is output, thereby achieving the technical effect of intuitively evaluating the vulcanization degree of the rubber compound in each part of the tire.

[0071] Through the above steps, a tire finite element model can be obtained that takes into account the equivalent thermal conductivity of the tire's corresponding skeleton material components. Vulcanization simulation calculations can further improve accuracy, and the program can quickly and intuitively evaluate the degree of vulcanization of the rubber compound in various parts of the tire.

[0072] Optional, Figure 9 An overall flowchart of a method for optimizing tire vulcanization simulation considering equivalent thermal conductivity is shown, as follows: Figure 9 As shown, the method includes the following steps:

[0073] Step S901: Taking a 205 / 60R16 tire as an example, obtain the finite element mesh model of the tire vulcanization process simulation, and obtain all the nodes and element numbers of the tire in the model.

[0074] Step S902: Obtain the type, spacing and angle of the skeleton material corresponding to the tire in step S901, calculate the equivalent thermal conductivity of the skeleton material component, and write the equivalent thermal conductivity of the rubber material corresponding to the skeleton material component into the simulation model.

[0075] Step S903: Obtain temperature process data of the vulcanization process, calculate the tire finite element mesh model of step S903, obtain temperature distribution data of the tire vulcanization process, and calculate the vulcanization degree distribution of different positions of the tire using the Arrhenius equation.

[0076] In step S904, a p9thon program is established to write out the vulcanization degree distribution of different positions of the tire in step S903, and to read the vulcanization degree data CD_Ei(t) of each unit of the model to intuitively evaluate the vulcanization degree of the rubber compound in each part of the tire.

[0077] Through the above steps, the method embodiment of this application takes into account the type of skeleton material corresponding to the tire, the arrangement spacing and angle, and writes the equivalent thermal conductivity of the component into the simulation model, which can further improve the accuracy of tire vulcanization simulation.

[0078] This application provides a tire vulcanization simulation device. Figure 10 This is a schematic diagram of the device, as shown below. Figure 10 As shown, the device includes: a first processing module 100, used to acquire thermal conductivity characteristics parameters of the target tire's skeleton material, the thermal conductivity characteristics parameters including at least one of the following: thermal conductivity of the skeleton material, geometric arrangement characteristics of the skeleton material; a second processing module 102, used to determine the equivalent thermal conductivity of the target tire based on the thermal conductivity characteristics parameters, wherein the equivalent thermal conductivity includes a first equivalent thermal conductivity along a first direction, a second equivalent thermal conductivity along a second direction, and a third equivalent thermal conductivity along a third direction, the first direction being the direction extending along the skeleton material, the second direction being the direction perpendicular to the first direction and within the laying plane of the skeleton material, and the third direction being the direction perpendicular to the first direction and perpendicular to the laying plane; a third processing module 104, used to assign the equivalent thermal conductivity to the mesh elements in the finite element mesh model, and solve the finite element mesh model based on the temperature process data during the vulcanization process to obtain the temperature distribution result data of the vulcanization process; and a fourth processing module 106, used to determine the vulcanization degree distribution at different locations of the tire based on the temperature distribution result data.

[0079] In some embodiments of this application, the second processing module 102 determines the equivalent thermal conductivity of the target tire based on thermal conductivity parameters by: dividing the target tire into tire sub-components based on the spacing of the skeleton materials; determining the first equivalent thermal conductivity of the tire sub-component based on the ratio of the first area of ​​the cross-section of the skeleton material perpendicular to the first direction and the second area of ​​the cross-section of the rubber material perpendicular to the first direction to the third area of ​​the cross-section of the tire sub-component perpendicular to the first direction; determining the second equivalent thermal conductivity of the tire sub-component based on the thermal resistance of the skeleton material and the rubber material in the second direction; and determining the third equivalent thermal conductivity of the tire sub-component based on the thermal resistance of the skeleton material and the rubber material in the third direction.

[0080] In some embodiments of this application, the second processing module 102 determines the first equivalent thermal conductivity corresponding to the tire sub-component, including: determining a first weight based on the ratio of the first area to the third area; determining a second weight based on the ratio of the second area to the third area; and determining the first equivalent thermal conductivity based on the product of the first weight and the thermal conductivity of the skeleton material, and the product of the second weight and the thermal conductivity of the rubber compound.

[0081] In some embodiments of this application, the first equivalent thermal conductivity is determined according to the following formula: in, The first equivalent thermal conductivity, The thickness of the tire sub-component. The width of the tire sub-component. For the spacing between the rows, The equivalent side length of the skeleton material. The thermal conductivity of the rubber compound is given by [reference needed]. The thermal conductivity of the skeleton material is... The diameter of the skeleton material.

[0082] In some embodiments of this application, before determining the first equivalent thermal conductivity, the second processing module 102 is further configured to: determine the equivalent side length of the skeleton material in the tire sub-component, wherein the equivalent side length is the side length obtained after converting the circular cross-section of the skeleton material into a square cross-section; and determine the first area of ​​the skeleton material in the tire sub-component based on the equivalent side length.

[0083] In some embodiments of this application, the second processing module 102 determines the second equivalent thermal conductivity of the tire sub-component based on the thermal resistance of the skeleton material and rubber compound in the second direction. This includes: determining the rubber compound in the tire sub-component connected in series with the skeleton material in the second direction as the first sub-rubber compound; determining the rubber compound in the tire sub-component other than the first sub-rubber compound as the second sub-rubber compound, and the thermal resistance of the second sub-rubber compound as the second thermal resistance; taking the sum of the thermal resistance of the first sub-rubber compound and the thermal resistance of the skeleton material as the first thermal resistance; taking the thermal resistance obtained by connecting the first thermal resistance and the second thermal resistance in parallel as the second equivalent thermal resistance of the tire sub-component in the second direction; and determining the second equivalent thermal conductivity based on the second equivalent thermal resistance in the second direction.

[0084] In some embodiments of this application, the second equivalent thermal conductivity is determined according to the following formula: in, The equivalent thermal resistance in the second direction. The second thermal resistance, The thermal resistance of the first component. For the thermal resistance of the skeleton material, The second equivalent thermal conductivity, This is the length of the tire sub-component through which heat flows in the second direction. This is the cross-sectional area of ​​the tire sub-component through which heat flows in the second direction.

[0085] In some embodiments of this application, the second processing module 102 determines the third equivalent thermal conductivity of the tire sub-component based on the thermal resistance of the skeleton material and rubber compound in the third direction. This includes: determining the rubber compound in the tire sub-component connected in series with the skeleton material in the third direction as the third sub-rubber compound; determining the rubber compound in the tire sub-component other than the third sub-rubber compound as the fourth sub-rubber compound, and the thermal resistance of the fourth sub-rubber compound as the fourth thermal resistance; taking the sum of the thermal resistance of the third sub-rubber compound and the thermal resistance of the skeleton material as the third thermal resistance; taking the thermal resistance obtained by connecting the third thermal resistance and the fourth thermal resistance in parallel as the third equivalent thermal resistance of the tire sub-component in the third direction; and determining the third equivalent thermal conductivity based on the third equivalent thermal resistance in the third direction.

[0086] In some embodiments of this application, the third equivalent thermal conductivity is determined according to the following formula: in, For the third-party equivalent thermal resistance, It is the fourth thermal resistance. The thermal resistance of the third component. For the thermal resistance of the skeleton material, The third equivalent thermal conductivity, The length of the tire sub-component through which heat flows upwards on a third-party axis. This is the cross-sectional area of ​​the tire sub-component through which heat flows upwards in a third direction.

[0087] In some embodiments of this application, the thermal resistance of any material in any direction in a tire sub-component is determined by the following formula: in, This represents the thermal resistance of the material in this direction. The length of the material through which heat flows in this direction. Let be the cross-sectional area of ​​the material through which heat flows in this direction. The thermal conductivity of the material is given by the material, and any material includes at least one of the following: a skeleton material and a binder.

[0088] It should be noted that the modules in the above-mentioned tire vulcanization simulation device can be program modules (such as a set of program instructions to implement a certain function) or hardware modules. For the latter, they can be represented in the following forms, but are not limited to these: each of the above modules is represented by a processor, or the functions of each of the above modules are implemented by a processor.

[0089] This application provides a non-volatile storage medium storing a program. During program execution, the device containing the non-volatile storage medium performs the following tire vulcanization simulation method: acquiring the thermal conductivity parameters of the target tire's skeleton material, including at least one of the following: the thermal conductivity of the skeleton material and the geometric arrangement characteristics of the skeleton material; determining the equivalent thermal conductivity of the target tire based on the thermal conductivity parameters, wherein the equivalent thermal conductivity includes a first equivalent thermal conductivity along a first direction, a second equivalent thermal conductivity along a second direction, and a third equivalent thermal conductivity along a third direction, where the first direction is the direction extending along the skeleton material, the second direction is perpendicular to the first direction and within the laying plane of the skeleton material, and the third direction is perpendicular to both the first direction and the laying plane; assigning the equivalent thermal conductivity to the mesh elements in a finite element mesh model, and solving the finite element mesh model based on the temperature process data during vulcanization to obtain the temperature distribution data of the vulcanization process; and determining the vulcanization degree distribution at different locations of the tire based on the temperature distribution data.

[0090] This application provides an electronic device, including a memory and a processor. The processor is used to run a program stored in the memory. During program execution, the following tire vulcanization simulation method is performed: acquiring thermal conductivity parameters of the target tire's skeleton material, including at least one of the following: thermal conductivity of the skeleton material and geometric arrangement characteristics of the skeleton material; determining the equivalent thermal conductivity of the target tire based on the thermal conductivity parameters, wherein the equivalent thermal conductivity includes a first equivalent thermal conductivity along a first direction, a second equivalent thermal conductivity along a second direction, and a third equivalent thermal conductivity along a third direction, the first direction being the direction extending along the skeleton material, the second direction being perpendicular to the first direction and within the laying plane of the skeleton material, and the third direction being perpendicular to the first direction and perpendicular to the laying plane; assigning the equivalent thermal conductivity to mesh elements in a finite element mesh model, and solving the finite element mesh model based on temperature process data during vulcanization to obtain temperature distribution data of the vulcanization process; and determining the vulcanization degree distribution at different locations of the tire based on the temperature distribution data.

[0091] This application provides a computer program product, including a computer program that, when executed by a processor, implements the following tire vulcanization simulation method: acquiring thermal conductivity parameters of the target tire's skeleton material, the thermal conductivity parameters including at least one of the following: thermal conductivity of the skeleton material, geometric arrangement characteristics of the skeleton material; determining the equivalent thermal conductivity of the target tire based on the thermal conductivity parameters, wherein the equivalent thermal conductivity includes a first equivalent thermal conductivity along a first direction, a second equivalent thermal conductivity along a second direction, and a third equivalent thermal conductivity along a third direction, the first direction being the direction extending along the skeleton material, the second direction being perpendicular to the first direction and within the laying plane of the skeleton material, and the third direction being perpendicular to the first direction and perpendicular to the laying plane; assigning the equivalent thermal conductivity to mesh elements in a finite element mesh model, and solving the finite element mesh model based on temperature process data during vulcanization to obtain temperature distribution data during the vulcanization process; and determining the vulcanization degree distribution at different locations of the tire based on the temperature distribution data.

[0092] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0093] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0094] The units described as separate components may or may not be physically separate. 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 can be selected to achieve the purpose of this embodiment according to actual needs.

[0095] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0096] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to related technologies, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0097] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A method for simulating tire vulcanization, characterized in that, include: The thermal conductivity parameters of the skeleton material of the target tire are obtained, and the thermal conductivity parameters include at least one of the following: the thermal conductivity of the skeleton material and the geometric arrangement characteristics of the skeleton material; The equivalent thermal conductivity of the target tire is determined based on the thermal conductivity characteristic parameters. The equivalent thermal conductivity includes a first equivalent thermal conductivity along a first direction, a second equivalent thermal conductivity along a second direction, and a third equivalent thermal conductivity along a third direction. The first direction is the direction extending along the skeleton material, the second direction is the direction perpendicular to the first direction and within the laying plane of the skeleton material, and the third direction is the direction perpendicular to the first direction and perpendicular to the laying plane. The equivalent thermal conductivity is assigned to the mesh element in the finite element mesh model, and the finite element mesh model is solved based on the temperature process data during the vulcanization process to obtain the temperature distribution result data of the vulcanization process. The degree of vulcanization at different locations of the tire is determined based on the temperature distribution data.

2. The tire vulcanization simulation method according to claim 1, characterized in that, Determining the equivalent thermal conductivity of the target tire based on the aforementioned thermal conductivity parameters includes: The target tire is divided into tire sub-components based on the spacing of the skeleton materials. The first equivalent thermal conductivity of the tire sub-component is determined based on the ratio of the first area of ​​the cross-section of the skeleton material in the tire sub-component perpendicular to the first direction and the second area of ​​the cross-section of the rubber material in the tire sub-component perpendicular to the first direction to the third area of ​​the cross-section of the tire sub-component perpendicular to the first direction. The second equivalent thermal conductivity of the tire sub-component is determined based on the thermal resistance of the skeleton material and the rubber compound in the second direction. The third equivalent thermal conductivity of the tire sub-component is determined based on the thermal resistance of the skeleton material and the rubber compound in the third direction.

3. The tire vulcanization simulation method according to claim 2, characterized in that, Determining the first equivalent thermal conductivity corresponding to the tire sub-component includes: The first weight is determined based on the ratio of the first area to the third area; The second weight is determined based on the ratio of the second area to the third area; The first equivalent thermal conductivity is determined based on the product of the first weight and the thermal conductivity of the skeleton material, and the product of the second weight and the thermal conductivity of the adhesive.

4. The tire vulcanization simulation method according to claim 3, characterized in that, The first equivalent thermal conductivity is determined according to the following formula: in, The first equivalent thermal conductivity, The thickness of the tire sub-component. The width of the tire sub-component. The arrangement spacing is... The equivalent side length of the skeleton material is given. The thermal conductivity of the rubber compound is given. The thermal conductivity of the skeleton material is given. The diameter of the skeleton material is given.

5. The tire vulcanization simulation method according to claim 2, characterized in that, Before determining the first equivalent thermal conductivity, the method further includes: Determine the equivalent side length of the skeleton material in the tire sub-component, wherein the equivalent side length is the side length obtained by transforming the circular cross-section of the skeleton material into a square cross-section; The first area of ​​the skeleton material in the tire sub-component is determined based on the equivalent side length.

6. The tire vulcanization simulation method according to claim 2, characterized in that, The second equivalent thermal conductivity of the tire sub-component is determined based on the thermal resistance of the skeleton material and the rubber compound in the second direction, including: The rubber compound that is connected in series with the skeleton material in the second direction within the tire sub-component is identified as the first sub-rubber compound; The rubber compound in the tire sub-component other than the first sub-rubber compound is identified as the second sub-rubber compound, and the thermal resistance of the second sub-rubber compound is identified as the second thermal resistance. The sum of the thermal resistance of the first sub-material and the thermal resistance of the skeleton material is taken as the first thermal resistance; The thermal resistance obtained by connecting the first thermal resistance and the second thermal resistance in parallel is taken as the second directional equivalent thermal resistance of the tire sub-component. The second equivalent thermal conductivity is determined based on the equivalent thermal resistance in the second direction.

7. The tire vulcanization simulation method according to claim 6, characterized in that, The second equivalent thermal conductivity is determined according to the following formula: in, The equivalent thermal resistance in the second direction. This is the second thermal resistance. The thermal resistance of the first sub-component is given. The thermal resistance of the skeleton material is... This is the second equivalent thermal conductivity. The length of the tire sub-component through which heat flows in the second direction. The cross-sectional area of ​​the tire sub-component through which heat flows in the second direction.

8. The tire vulcanization simulation method according to claim 2, characterized in that, The third equivalent thermal conductivity of the tire sub-component is determined based on the thermal resistance of the skeleton material and the rubber compound in the third direction, including: The rubber compound within the tire sub-component that is connected in series with the skeleton material in the third direction is identified as the third sub-rubber compound. The rubber compound in the tire sub-component, excluding the third sub-rubber compound, is identified as the fourth sub-rubber compound, and the thermal resistance of the fourth sub-rubber compound is identified as the fourth thermal resistance. The sum of the thermal resistance of the third sub-material and the thermal resistance of the skeleton material is taken as the third thermal resistance; The thermal resistance obtained by connecting the third thermal resistance and the fourth thermal resistance in parallel is taken as the third-direction equivalent thermal resistance of the tire sub-component. The third equivalent thermal conductivity is determined based on the third equivalent thermal resistance.

9. The tire vulcanization simulation method according to claim 8, characterized in that, The third equivalent thermal conductivity is determined according to the following formula: in, For the third-party equivalent thermal resistance, The fourth thermal resistance, The thermal resistance of the third sub-component. The thermal resistance of the skeleton material is... The third equivalent thermal conductivity, The length of the tire sub-component through which heat flows upwards from the third party. The cross-sectional area of ​​the tire sub-component through which heat flows upwards from the third party.

10. The tire vulcanization simulation method according to claim 2, characterized in that, The thermal resistance of any material in any direction in the tire sub-component is determined by the following formula: in, This represents the thermal resistance of the material in this direction. The length of the material through which heat flows in this direction. Let be the cross-sectional area of ​​the material through which heat flows in this direction. The thermal conductivity of the material is given by the material, and any of the materials includes at least one of the following: the skeleton material and the adhesive.

11. A tire vulcanization simulation device, characterized in that, include: The first processing module is used to obtain the thermal conductivity characteristics of the skeleton material of the target tire, wherein the thermal conductivity characteristics include at least one of the following: the thermal conductivity of the skeleton material and the geometric arrangement characteristics of the skeleton material; The second processing module is used to determine the equivalent thermal conductivity of the target tire based on the thermal conductivity characteristic parameters. The equivalent thermal conductivity includes a first equivalent thermal conductivity with the thermal conductivity direction along a first direction, a second equivalent thermal conductivity with the thermal conductivity direction along a second direction, and a third equivalent thermal conductivity with the thermal conductivity direction along a third direction. The first direction is the direction extending along the skeleton material, the second direction is the direction perpendicular to the first direction and within the laying plane of the skeleton material, and the third direction is the direction perpendicular to the first direction and perpendicular to the laying plane. The third processing module is used to assign the equivalent thermal conductivity to the mesh elements in the finite element mesh model, and solve the finite element mesh model based on the temperature process data during the vulcanization process to obtain the temperature distribution result data of the vulcanization process. The fourth processing module is used to determine the vulcanization degree distribution at different locations of the tire based on the temperature distribution result data.

12. A non-volatile storage medium, characterized in that, The non-volatile storage medium stores a program, wherein when the program is executed, it controls the device containing the non-volatile storage medium to perform the tire vulcanization simulation method according to any one of claims 1 to 10.

13. An electronic device, characterized in that, include: A memory and a processor, the processor being configured to run a program stored in the memory, wherein the program, when running, executes the tire vulcanization simulation method according to any one of claims 1 to 10.

14. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the tire vulcanization simulation method according to any one of claims 1 to 10.

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