Simulation method and device for profile steel hot bending forming, electronic equipment and storage medium
Through the simulation method, the initial parameters of the hot bending forming of the steel are adjusted, and the problems of huge consumption and long construction period of the hot roll bending steel test prototype are solved, efficient process simulation and parameter optimization are achieved, and production costs and cycles are reduced.
Patent Information
- Application Number
- CN202411646060.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-03-04
AI Technical Summary
The hot roll curved steel construction test prototype consumes a huge amount of money and has a long construction period.
A simulation method for thermal bending forming of steel is provided. By obtaining initial geometric parameters and process parameters, a thermal bending forming calculation model is established, simulation simulations are carried out in multiple simulation stages, and parameters are adjusted until the preset index range and qualified conditions are met.
Effectively reduce trial and error costs, shorten product development cycles, reduce energy consumption and material waste, improve production efficiency and economy, and the cost and cycle are far lower than that of building test prototypes.
Smart Images
Figure CN119556589A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of hot bending of steel sections, and in particular to a simulation method, device, electronic equipment and storage medium for hot bending of steel sections. Background Art
[0002] The online hot roll bending technology for steel sections is a production process that cuts the high-temperature steel plates at the outlet of the hot-rolled plate and strip mill into several strips, and roll-bends the strips into steel sections at the same time. It has the advantages of short process, low forming resistance, low energy consumption, high yield rate, and high product strength. It is a green and low-carbon process.
[0003] Hot roll bending technology allows steel mills to mass-produce steel components, shortening the steel structure production process and significantly reducing processing costs. It is a leading new product for the future. However, since this technology utilizes the waste heat of hot-rolled strip and performs rolling processing under high temperature conditions, its processing technology is very different from that of cold-bent steel. The design method of traditional cold-bent steel is no longer applicable to the design of hot roll bent steel, and the construction of test prototypes is extremely costly and takes a long time. Summary of the invention
[0004] In view of the shortcomings of the related technologies mentioned above, the present application provides a simulation method, device, electronic equipment and storage medium for hot bending of steel sections to solve the technical problems of huge cost and long construction period in constructing test prototypes for hot roll-bent steel sections.
[0005] The present application provides a simulation method for hot bending forming of steel sections, and the simulation method for hot bending forming of steel sections includes: obtaining initial geometric parameters and initial process parameters of the steel sections, and obtaining a hot bending forming calculation model based on the initial geometric parameters and the initial process parameters; simulating multiple simulation stages of hot bending forming of steel sections based on the hot bending forming calculation model, and obtaining parameter indicators and simulation models corresponding to the multiple simulation stages; comparing the parameter indicators corresponding to the multiple simulation stages with a preset indicator range, and adjusting the initial geometric parameters and the initial process parameters according to the comparison results and the simulation models corresponding to the multiple simulation stages; repeating the above steps until the comparison results show that the parameter indicators corresponding to the multiple simulation stages are within the preset indicator range, and the simulation models corresponding to the multiple simulation stages meet the preset qualification conditions, so as to simulate the hot bending forming of the steel sections.
[0006] In one embodiment of the present application, the initial geometric parameters and initial process parameters of the steel section are obtained, and a hot bending forming calculation model is obtained based on the initial geometric parameters and the initial process parameters, including: using the preset steel section size, roller diameter, first hot bending angle, second hot bending angle, angle radius and hole type parameters as the initial geometric parameters; using the preset number of racks, rack spacing, roll speed, material parameters, number of passes and temperature parameters as the initial process parameters.
[0007] In one embodiment of the present application, multiple simulation stages of the hot bending forming of the steel section are simulated based on the hot bending forming calculation model, and parameter indicators and simulation models corresponding to the multiple simulation stages are obtained, including: meshing the hot bending forming calculation model, the number of mesh layers of the mesh division is a preset number of layers, and the mesh size is a preset mesh size; based on the initial process parameters, material assignment is performed on the hot bending forming calculation model based on a preset temperature material curve, a contact interface is established based on a preset material contact coefficient, and load is loaded based on a preset load distribution; simulation of multiple simulation stages is performed according to the hot bending forming calculation model, and the multiple simulation stages include a splitting stage, a clamping stage, an initial bending stage, a secondary bending stage and a forming stage, and parameter indicators and simulation models corresponding to each stage are obtained.
[0008] In one embodiment of the present application, the parameter indicators corresponding to each stage at least include the cross-sectional size of the rolled piece, the rolling force, the rolling torque, the forming speed and the stress-strain distribution.
[0009] In one embodiment of the present application, the parameter indicators corresponding to the multiple simulation stages are compared with the preset indicator range, and the initial geometric parameters and the initial process parameters are adjusted according to the comparison results and the simulation models corresponding to the multiple simulation stages, including: comparing the stress-strain distribution of the multiple simulation stages with the preset stress-strain range, if the stress-strain distribution of any stage exceeds the preset stress-strain range, then optimizing the stress-strain distribution by adjusting the hot bending angle in the initial geometric parameters, or increasing the number of passes in the process parameters; comparing the stress-strain distribution of the multiple simulation stages with the preset stress-strain range; if the stress-strain distribution of any stage exceeds the preset stress-strain range, then optimizing the stress-strain distribution by adjusting the hot bending angle in the initial geometric parameters, or increasing the number of passes in the process parameters; The cross-sectional size of the rolled piece is compared with a preset size range. If the cross-sectional size of the rolled piece at any stage exceeds the preset size range, the hole parameters and the steel section size in the initial geometric parameters are adjusted to optimize the cross-sectional size of the rolled piece; the rolling forces of multiple simulation stages are compared with a preset rolling force range, and the rolling torques of multiple simulation stages are compared with a preset rolling torque range. If the rolling force or rolling torque at any stage exceeds the preset range, the rolling force and the rolling torque are optimized by adjusting the temperature parameters and the roll speed in the process parameters.
[0010] In one embodiment of the present application, the simulation models corresponding to the multiple simulation stages meet the preset qualification conditions, including: if the simulation model has no wave edge problem and distortion problem, then the simulation model meets the preset qualification conditions; if the simulation model has a wave edge problem or distortion problem, then the wave edge problem and distortion problem are optimized by reducing the rack spacing in the process parameters.
[0011] In one embodiment of the present application, multiple simulation stages of the hot bending forming of the steel section are simulated based on the hot bending forming calculation model, and parameter indicators and simulation models corresponding to the multiple simulation stages are obtained, including: setting symmetry constraints in the hot bending forming calculation model, and the symmetry constraints are used to keep the deformation and temperature distribution of the hot bending forming calculation model on the symmetry plane consistent; based on finite element simulation, the hot bending forming simulation calculation of the steel section is performed on the hot bending forming calculation model to obtain parameter indicators and simulation models corresponding to the multiple simulation stages.
[0012] An embodiment of the present application also provides a simulation device for hot bending forming of steel sections, the device comprising: a data input module, used to obtain initial geometric parameters and initial process parameters of the steel sections, and obtain a hot bending forming calculation model based on the initial geometric parameters and the initial process parameters; a model simulation module, used to simulate multiple simulation stages of hot bending forming of steel sections based on the hot bending forming calculation model, and obtain parameter indicators and simulation models corresponding to the multiple simulation stages; a parameter adjustment module, used to compare the parameter indicators corresponding to the multiple simulation stages with a preset indicator range, and adjust the initial geometric parameters and the initial process parameters according to the comparison results and the simulation models corresponding to the multiple simulation stages; an iterative optimization module, used to repeat the above steps until the comparison results are that the parameter indicators corresponding to the multiple simulation stages are within the preset indicator range, and the simulation models corresponding to the multiple simulation stages meet the preset qualification conditions, so as to simulate the hot bending forming of the steel sections.
[0013] An embodiment of the present application also provides an electronic device, comprising: one or more processors; a storage device for storing one or more programs, and when the one or more programs are executed by the one or more processors, the electronic device implements the simulation method for hot bending of steel sections as described in any of the above embodiments.
[0014] An embodiment of the present application further provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor of a computer, the computer is enabled to execute a simulation method for hot bending of steel sections as described in any of the above embodiments.
[0015] Beneficial effects of the present application: The embodiments of the present application provide a simulation method, device, electronic device and storage medium for hot bending forming of steel sections, the method comprising obtaining initial geometric parameters and initial process parameters of the steel sections, and obtaining a hot bending forming calculation model based on the initial geometric parameters and initial process parameters; simulating multiple simulation stages of hot bending forming of steel sections based on the hot bending forming calculation model, and obtaining parameter indicators and simulation models corresponding to the multiple simulation stages; comparing the parameter indicators corresponding to the multiple simulation stages with the preset indicator range, and adjusting the initial geometric parameters and initial process parameters according to the comparison results and the simulation models corresponding to the multiple simulation stages; repeating the above steps until the comparison results show that the parameter indicators corresponding to the multiple simulation stages are within the preset indicator range, and the simulation models corresponding to the multiple simulation stages meet the preset qualified conditions, so as to simulate the hot bending forming of steel sections, drive the entire simulation process through parametric modeling, and be able to efficiently complete the process simulation process, obtain the optimal parameters through iterative optimization of the simulation parameters to guide industrial production, effectively reduce the trial and error cost, shorten the product development cycle, and reduce energy consumption and material waste. At the same time, the cost and cycle of the simulation method of the present application are much lower than those of establishing a test prototype.
[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of an implementation environment of a simulation method for hot bending of steel sections shown in an exemplary embodiment of the present application;
[0018] Figure 2 It is a flow chart of a simulation method for hot bending of steel sections shown in an exemplary embodiment of the present application;
[0019] Figure 3 It is a simulation optimization technology flow chart of hot bending forming of steel sections shown in an exemplary embodiment of the present application;
[0020] Figure 4 It is a block diagram of a simulation device for hot bending of steel sections shown in an exemplary embodiment of the present application;
[0021] Figure 5 It is a structural schematic diagram of an electronic device shown in an exemplary embodiment of the present application. DETAILED DESCRIPTION
[0022] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.
[0023] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application, and thus the drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.
[0024] It should be noted that in this application, "first", "second", etc. are only used to distinguish similar objects, and are not used to limit the order or precedence of similar objects. The variations of "including", "having", etc. described above indicate that the scope covered by the subject of the word is not exclusive except for the examples shown by the word.
[0025] It is understood that the various numbers, step numbers, etc. recorded in this application are distinguished for the convenience of description and are not used to limit the scope of this application. The size of the numbers in this application does not mean the order of execution. The execution order of each process should be determined by its function and internal logic.
[0026] In the following description, a lot of details are discussed to provide a more thorough explanation of the embodiments of the present application. However, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present application difficult to understand.
[0027] The embodiments of the present application respectively provide a simulation method for hot bending of steel sections, a simulation device for hot bending of steel sections, an electronic device, a computer-readable storage medium and a computer program product, which will be described in detail below.
[0028] See also Figure 1 , Figure 1 It is a schematic diagram of an implementation environment of a simulation method for hot bending of steel sections shown in an exemplary embodiment of the present application.
[0029] like Figure 1As shown, the implementation environment may include a computer device 101, which may be at least one of a microcomputer, an embedded computer, a neural network computer, etc. The computer device 101 includes a simulation environment such as CAD software and finite element simulation software. The CAD software is used to establish a three-dimensional geometric model of hot bending forming based on initial geometric parameters and export it, and the exported three-dimensional geometric model is imported into the finite element simulation software to perform meshing, contact surface establishment, material assignment, boundary loading and other operations through initial process parameters to establish a hot bending forming calculation model for simulation. The computer device 101 calculates the hot bending forming calculation model to obtain parameter indicators and simulation models at each simulation stage, and optimizes the initial geometric parameters and initial process parameters based on the obtained parameter indicators and simulation models at each simulation stage until the target effect is achieved, that is, the simulation is completed, and the final adjusted geometric parameters and process parameters are output, and the actual working conditions are guided based on the final geometric parameters and process parameters.
[0030] See also Figure 2 , Figure 2 is a flowchart of a simulation method for hot bending of steel sections shown in an exemplary embodiment of the present application. The method can be applied to Figure 1 The implementation environment shown is as follows. The method may also be applicable to other exemplary implementation environments and be specifically executed by devices in other implementation environments. This embodiment does not limit the implementation environment to which the method is applicable.
[0031] like Figure 2 As shown, in an exemplary embodiment, the simulation method for hot bending of steel sections includes at least steps S210 to S240, which are described in detail as follows:
[0032] Step S210, obtaining initial geometric parameters and initial process parameters of the steel section, and obtaining a hot bending forming calculation model based on the initial geometric parameters and initial process parameters.
[0033] In one embodiment of the present application, the initial geometric parameters and initial process parameters of the steel section are obtained, and a hot bending forming calculation model is obtained based on the initial geometric parameters and the initial process parameters, including: taking the preset steel section size, roller diameter, first hot bending angle, second hot bending angle, angle radius and hole type parameters as the initial geometric parameters; taking the preset number of racks, rack spacing, roll speed, material parameters, number of passes and temperature parameters as the initial process parameters.
[0034] In one embodiment of the present application, a three-dimensional geometric model of hot bending is established based on initial geometric parameters using CAD software, and the three-dimensional geometric model is imported into finite element simulation software to establish a hot bending calculation model based on initial process parameters.
[0035] Step S220, simulating multiple simulation stages of hot bending forming of steel sections based on the hot bending forming calculation model, and obtaining parameter indicators and simulation models corresponding to the multiple simulation stages.
[0036] In one embodiment of the present application, multiple simulation stages of hot bending forming of steel sections are simulated based on a hot bending forming calculation model, and parameter indicators and simulation models corresponding to the multiple simulation stages are obtained, including: meshing the hot bending forming calculation model, the number of mesh layers of the mesh division is a preset number of layers, and the mesh size is a preset mesh size; based on the initial process parameters, the hot bending forming calculation model is assigned materials based on a preset temperature material curve, a contact interface is established based on a preset material contact coefficient, and a load is loaded based on a preset load distribution; according to the hot bending forming calculation model, multiple simulation stages are simulated, and the multiple simulation stages include a splitting stage, a clamping stage, an initial bending stage, a secondary bending stage and a forming stage, and parameter indicators and simulation models corresponding to each stage are obtained.
[0037] In one embodiment of the present application, the entire hot bending forming process of steel sections is simulated by a hot bending forming calculation model, including each stage of the steel plate from the splitting stage, the clamping stage, the initial bending stage, the secondary bending stage to the forming stage, and the parameter indicators of different passes in each simulation stage are output to predict the quality of the final formed steel section and potential forming defects based on the parameter indicators.
[0038] In one embodiment of the present application, meshing of the hot bending forming calculation model includes pre-setting the number of mesh layers and mesh size, wherein the number of mesh layers in the thickness direction of the steel plate is set to at least 4 layers to ensure accurate simulation of the stress state of the steel plate when bent. In addition, mesh refinement is required at the bending corners of the steel plate. Taking a 90° arc as an example, a 90° arc in the forming stage requires no less than 9 nodes to ensure capture of the arc.
[0039] In one embodiment of the present application, the calculated length of the rolled piece in the hot bending forming calculation model should be at least greater than the spacing between the five racks to ensure that the rolled piece can be located in the five racks at the same time to form an accurate tensioning relationship.
[0040] In one embodiment of the present application, the mesh in the non-deformed area of the steel plate can be appropriately coarsened, and the mesh density in the longitudinal direction of the steel plate can be appropriately reduced to reduce the calculation scale.
[0041] In one embodiment of the present application, the parameter indicators corresponding to each stage at least include the cross-sectional size of the rolled piece, the rolling force, the rolling torque, the forming speed and the stress-strain distribution.
[0042] In one embodiment of the present application, multiple simulation stages of hot bending forming of steel sections are simulated based on a hot bending forming calculation model, and parameter indicators and simulation models corresponding to the multiple simulation stages are obtained, including: symmetry constraints are set in the hot bending forming calculation model, and the symmetry constraints are used to keep the deformation and temperature distribution of the hot bending forming calculation model on the symmetry plane consistent; based on finite element simulation, the hot bending forming simulation calculation of the steel sections is performed on the hot bending forming calculation model to obtain parameter indicators and simulation models corresponding to the multiple simulation stages.
[0043] In one embodiment of the present application, the calculation is performed using a symmetric model, and the roller can be simulated using a rigid body, without considering its temperature and deformation. The rolled piece can be simulated using an elastic-plastic constitutive model or a rigid-plastic constitutive model, considering the influence of its deformation resistance with temperature and forming speed.
[0044] Step S230 , comparing parameter indicators corresponding to the multiple simulation stages with preset indicator ranges, and adjusting initial geometric parameters and initial process parameters according to the comparison results and simulation models corresponding to the multiple simulation stages.
[0045] In one embodiment of the present application, parameter indicators corresponding to multiple simulation stages are compared with preset indicator ranges, and initial geometric parameters and initial process parameters are adjusted according to the comparison results and simulation models corresponding to multiple simulation stages, including: comparing the stress-strain distribution of multiple simulation stages with the preset stress-strain range, if the stress-strain distribution of any stage exceeds the preset stress-strain range, optimizing the stress-strain distribution by adjusting the hot bending angle in the initial geometric parameters, or increasing the number of passes in the process parameters; comparing the cross-sectional dimensions of the rolled pieces of multiple simulation stages with the preset dimension range, if the cross-sectional dimensions of the rolled pieces of any stage exceed the preset dimension range, optimizing the cross-sectional dimensions of the rolled pieces by adjusting the hole parameters and the steel section dimensions in the initial geometric parameters; comparing the rolling forces of multiple simulation stages with the preset rolling force range, comparing the rolling torques of multiple simulation stages with the preset rolling torque range, if the rolling force or rolling torque of any stage exceeds the preset range, optimizing the rolling force and rolling torque by adjusting the temperature parameters and the roll speed in the process parameters.
[0046] In one embodiment of the present application, by analyzing the parameter indicators of different passes in each simulation stage, forming defects and their causes are identified, and the initial geometric parameters and initial process parameters are optimized based on the defects and causes to eliminate or reduce forming defects such as edge wavyness, distortion, corner cracks, etc., and to improve the dimensional accuracy and mechanical properties of the steel section after hot bending.
[0047] Step S240, repeat the above steps until the comparison result is that the parameter indicators corresponding to the multiple simulation stages are within the preset indicator range, and the simulation models corresponding to the multiple simulation stages meet the preset qualification conditions, so as to simulate the hot bending of the steel section.
[0048] In one embodiment of the present application, steps S210 to S230 are repeated based on the adjusted initial geometric parameters and initial process parameters to implement multiple rounds of iterative optimization to obtain the final geometric parameters and process parameters for industrial guidance, so as to effectively reduce trial and error costs, shorten product development cycles, reduce energy consumption and material waste, and improve the production efficiency and economy of hot bending of steel sections.
[0049] In one embodiment of the present application, the simulation models corresponding to the multiple simulation stages meet the preset qualification conditions, including: if the simulation model has no wave edge problem and distortion problem, then the simulation model meets the preset qualification conditions; if the simulation model has a wave edge problem or distortion problem, then the wave edge problem and distortion problem are optimized by reducing the rack spacing in the process parameters.
[0050] See also Figure 3 , Figure 3 It is a simulation optimization technology flow chart of hot bending forming of steel sections shown in an exemplary embodiment of the present application. In one embodiment of the present application, the initial geometric parameters and initial process parameters are first determined, including the specifications and dimensions of the steel sections, the number of racks, the rack spacing, the roller diameter and the hole type parameters. A three-dimensional geometric model is generated based on the geometric parameters, and the three-dimensional geometric model is imported into the finite element simulation software for meshing, material assignment, boundary loading and result output based on the initial process parameters. The forming temperature is set to 900°, the roll is a rigid body, the steel plate is an elastic-plastic body, a bilaterally symmetrical model is adopted, the length of the steel plate model is 8m, the longitudinal grid size of the roll and the steel plate is 8mm, the steel plate is divided into 4 layers in the thickness direction, and the corner area is locally encrypted to obtain a hot bending forming calculation model. The output results are obtained by calculating the hot bending forming calculation model. The output results include parameter indicators such as the cross-sectional size of the rolled piece, rolling force, rolling torque, forming speed, stress and strain distribution of different passes in each simulation stage. The parameter indicators are used to determine whether the output results meet the qualification requirements. If they meet the requirements, the current hole type (i.e., geometric parameters and process parameters) is output. If not, the hole type is corrected (the geometric parameters and process parameters are adjusted) and then iterative optimization is performed again.
[0051] See also Figure 4 , Figure 4 This is a block diagram of a simulation device for hot bending of steel sections shown in an exemplary embodiment of the present application. The device can be applied to Figure 1 The implementation environment shown is as follows. The device may also be applicable to other exemplary implementation environments and specifically configured in other devices. This embodiment does not limit the implementation environment to which the device is applicable.
[0052] like Figure 4 As shown, the exemplary simulation device for hot bending of steel sections includes: a data input module 401 , a model simulation module 402 , a parameter adjustment module 403 and an iterative optimization module 404 .
[0053] The data input module 401 is used to obtain the initial geometric parameters and initial process parameters of the steel section, and obtain a hot bending forming calculation model based on the initial geometric parameters and initial process parameters;
[0054] The model simulation module 402 is used to simulate multiple simulation stages of hot bending forming of steel sections based on the hot bending forming calculation model, and obtain parameter indicators and simulation models corresponding to the multiple simulation stages;
[0055] The parameter adjustment module 403 is used to compare the parameter indicators corresponding to the multiple simulation stages with the preset indicator range, and adjust the initial geometric parameters and initial process parameters according to the comparison results and the simulation models corresponding to the multiple simulation stages;
[0056] The iterative optimization module 404 is used to repeat the above steps until the comparison result shows that the parameter indicators corresponding to the multiple simulation stages are within the preset indicator range, and the simulation models corresponding to the multiple simulation stages meet the preset qualification conditions, so as to simulate the hot bending of the steel section.
[0057] Figure 5 The structure diagram of the computer system suitable for implementing the electronic device of the embodiment of the present application is shown. It should be noted that: Figure 5 The computer system 500 of the electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.
[0058] like Figure 5 As shown, the computer system 500 includes a central processing unit (CPU) 501, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 502 or the program loaded from the storage part 508 to the random access memory (RAM) 503, such as executing the method described in the above embodiment. In the RAM 503, various programs and data required for system operation are also stored. The CPU 501, the ROM 502 and the RAM 503 are connected to each other through the bus 504. The input / output (I / O) interface 505 is also connected to the bus 504.
[0059] The following components are connected to the I / O interface 505: an input section 506 including a keyboard, a mouse, etc.; an output section 507 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker; a storage section 508 including a hard disk, etc.; and a communication section 509 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to the I / O interface 505 as needed. A removable medium 511, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 510 as needed so that a computer program read therefrom is installed into the storage section 508 as needed.
[0060] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication section 509, and / or installed from a removable medium 511. When the computer program is executed by a central processing unit (CPU) 501, various functions defined in the system of the present application are executed.
[0061] It should be noted that the computer-readable medium shown in the embodiment of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, wherein a computer-readable computer program is carried. This propagated data signal can take a variety of forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. A computer program contained on a computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.
[0062] The flowchart and block diagram in the accompanying drawings illustrate the possible architecture, functions and operations of the system, method and computer program product according to various embodiments of the present application. Wherein, each box in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.
[0063] The units involved in the embodiments described in this application may be implemented by software or hardware, and the units described may also be set in a processor. The names of these units do not, in some cases, constitute limitations on the units themselves.
[0064] Another aspect of the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor of a computer, the computer executes the simulation method for hot bending of steel sections as described above. The computer-readable storage medium may be included in the electronic device described in the above embodiment, or may exist independently without being assembled into the electronic device.
[0065] Another aspect of the present application also provides a computer program product or a computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the simulation method for hot bending of steel sections provided in the above-mentioned embodiments.
[0066] The above embodiments are merely illustrative of the principles and effects of the present application, and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed in the present application shall still be covered by the claims of the present application.
Claims
1. A simulation method for hot bending of steel sections, characterized in that: The simulation method for hot bending of steel sections comprises: Acquire initial geometric parameters and initial process parameters of the steel section, and obtain a hot bending forming calculation model based on the initial geometric parameters and the initial process parameters; Based on the hot bending forming calculation model, multiple simulation stages of hot bending forming of section steel are simulated, and parameter indicators and simulation models corresponding to the multiple simulation stages are obtained; Comparing the parameter indicators corresponding to the multiple simulation stages with the preset indicator range, and adjusting the initial geometric parameters and the initial process parameters according to the comparison results and the simulation models corresponding to the multiple simulation stages; Repeat the above steps until the comparison result shows that the parameter indicators corresponding to the multiple simulation stages are within the preset indicator range, and the simulation models corresponding to the multiple simulation stages meet the preset qualification conditions, so as to simulate the hot bending forming of the steel section.
2. The simulation method for hot bending of steel sections according to claim 1, characterized in that: Acquiring initial geometric parameters and initial process parameters of the steel section, and obtaining a hot bending forming calculation model based on the initial geometric parameters and the initial process parameters includes: The preset steel section size, roller diameter, first hot bending angle, second hot bending angle, angle radius and hole type parameters are used as the initial geometric parameters; The preset number of stands, stand spacing, roll speed, material parameters, number of passes and temperature parameters are used as the initial process parameters.
3. The simulation method for hot bending of steel sections according to claim 1, characterized in that: Based on the hot bending forming calculation model, multiple simulation stages of the hot bending forming of the steel section are simulated, and parameter indicators and simulation models corresponding to the multiple simulation stages are obtained, including: Meshing the hot bending forming calculation model, wherein the number of mesh layers of the mesh division is a preset number of layers, and the mesh size is a preset mesh size; Based on the initial process parameters, the hot bending forming calculation model is assigned a material value based on a preset temperature material curve, a contact interface is established based on a preset material contact coefficient, and a load is applied based on a preset load distribution; According to the hot bending forming calculation model, simulations are performed in multiple simulation stages, including a splitting stage, a clamping stage, an initial bending stage, a secondary bending stage and a forming stage, and parameter indicators and simulation models corresponding to each stage are obtained.
4. The simulation method for hot bending of steel sections according to claim 3, characterized in that: The parameter indicators corresponding to each stage at least include the cross-sectional size of the rolled piece, rolling force, rolling torque, forming speed and stress-strain distribution.
5. The simulation method for hot bending of steel sections according to claim 4, characterized in that: Comparing the parameter indicators corresponding to the multiple simulation stages with the preset indicator range, and adjusting the initial geometric parameters and the initial process parameters according to the comparison results and the simulation models corresponding to the multiple simulation stages includes: Comparing the stress-strain distributions of multiple simulation stages with the preset stress-strain range, if the stress-strain distributions of any stage exceed the preset stress-strain range, optimizing the stress-strain distributions by adjusting the hot bending angle in the initial geometric parameters or increasing the number of passes in the process parameters; Comparing the cross-sectional dimensions of the rolled product at multiple simulation stages with a preset dimension range, if the cross-sectional dimensions of the rolled product at any stage exceed the preset dimension range, optimizing the cross-sectional dimensions of the rolled product by adjusting the hole parameters and the steel section dimensions in the initial geometric parameters; The rolling forces of multiple simulation stages are compared with the preset rolling force range, and the rolling torques of multiple simulation stages are compared with the preset rolling torque range. If the rolling force or rolling torque of any stage exceeds the preset range, the rolling force and the rolling torque are optimized by adjusting the temperature parameters and the roll speed in the process parameters.
6. The simulation method for hot bending of steel sections according to claim 1, characterized in that: The simulation models corresponding to the multiple simulation stages meet the preset qualification conditions including: If the simulation model has no wave edge problem and no distortion problem, then the simulation model meets the preset qualification conditions; If the simulation model has a wave edge problem or a distortion problem, the wave edge problem and the distortion problem are optimized by reducing the rack spacing in the process parameters.
7. The simulation method for hot bending of steel sections according to claim 1, characterized in that: Based on the hot bending forming calculation model, multiple simulation stages of the hot bending forming of the steel section are simulated, and parameter indicators and simulation models corresponding to the multiple simulation stages are obtained, including: Setting a symmetry constraint in the hot bending forming calculation model, wherein the symmetry constraint is used to keep the deformation and temperature distribution of the hot bending forming calculation model on the symmetry plane consistent; Based on finite element simulation, the hot bending forming calculation model is subjected to steel section hot bending forming simulation calculation to obtain parameter indicators and simulation models corresponding to the multiple simulation stages.
8. A simulation device for hot bending of steel sections, characterized in that: The device comprises: A data input module, used to obtain initial geometric parameters and initial process parameters of the steel section, and obtain a hot bending forming calculation model based on the initial geometric parameters and the initial process parameters; A model simulation module, used to simulate multiple simulation stages of hot bending forming of section steel based on the hot bending forming calculation model, and obtain parameter indicators and simulation models corresponding to the multiple simulation stages; A parameter adjustment module, used for comparing the parameter indicators corresponding to the multiple simulation stages with a preset indicator range, and adjusting the initial geometric parameters and the initial process parameters according to the comparison results and the simulation models corresponding to the multiple simulation stages; An iterative optimization module is used to repeat the above steps until the comparison result is that the parameter indicators corresponding to the multiple simulation stages are within the preset indicator range, and the simulation models corresponding to the multiple simulation stages meet the preset qualification conditions, so as to simulate the hot bending forming of the steel section.
9. An electronic device, characterized in that: The electronic device comprises: one or more processors; A storage device for storing one or more programs, which, when executed by the one or more processors, enables the electronic device to implement the simulation method for hot bending of steel sections as described in any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed by a processor of a computer, the computer is enabled to execute the simulation method for hot bending of steel sections as described in any one of claims 1 to 7.