A design method, system and electronic device for the interlayer of a maglev vehicle

Abstract

The present application discloses a method, a system and an electronic device for the interlayer design of a maglev vehicle. By respectively performing topology optimization on the longitudinal members, transverse members and vertical members of the interlayer structure based on the design objectives and line conditions, so as to finally combine to form an interlayer model structure, it realizes the purpose of meeting the parameter requirements such as stiffness, strength and light weight based on the design objectives without relying on the initial configuration and the experience of designers, and improves the design freedom.

Description

Technical Field

[0001] The present application relates to the field of magnetic levitation vehicles, and in particular to a magnetic levitation vehicle interlayer design method, system and electronic equipment. Background Art

[0002] The mezzanine, located beneath the carriage floor, is a frame structure constructed from aluminum alloy profiles and sheet metal riveted, welded, and bolted together. This structure is unique to maglev vehicles, where all relevant electrical equipment, brakes, air conditioning units, and magnetic running mechanisms are installed and function. T-braces, traction rod supports, and other auxiliary components are installed on both sides of the space frame, along with gas and cable connections and passages.

[0003] Due to the structural characteristics of maglev vehicles, a sandwich structure typically assumes all the functions of the underframe: it connects to the suspension frame and serves as the carrier for the coupler, bearing the increased load. Furthermore, the sandwich structure accommodates the increased electrical equipment through internal components such as the skeleton and partitions. This requires high strength and rigidity while also ensuring lightweight design. Currently, sandwich structure design often relies on the designer's experience, which results in limited design freedom and an inability to achieve a balance between lightweight and high rigidity. Summary of the Invention

[0004] In view of this, the present application provides a magnetic levitation vehicle interlayer design method, system and electronic equipment, the specific solutions of which are as follows:

[0005] A method for designing a magnetic levitation vehicle interlayer, comprising:

[0006] Determining the sandwich structure parameters of the maglev vehicle based on the design objectives of the maglev vehicle and the line operating conditions, wherein the sandwich structure parameters include at least stiffness information, strength information, and lightweight parameters;

[0007] performing topological optimization of the longitudinal component based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the longitudinal component to determine the configuration of the longitudinal component;

[0008] performing topological optimization of the transverse member based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the transverse member to determine the configuration of the transverse member;

[0009] performing topological optimization of the vertical component based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical component to determine the configuration of the vertical component;

[0010] The sandwich model structure is determined based on the longitudinal component configuration, the transverse component configuration and the vertical component configuration.

[0011] Furthermore, it also includes:

[0012] Determine whether the parameters of the sandwich model structure match the sandwich structure parameters, and determine the effectiveness of topology optimization based on the judgment result.

[0013] Further, the determining whether the topology optimization is effective based on the judgment result includes:

[0014] If the judgment result indicates that the parameters of the sandwich model structure match the sandwich structure parameters, determine the sandwich model structure as the final configuration of the sandwich structure;

[0015] If the judgment result indicates that the parameters of the sandwich model structure do not match the sandwich structure parameters, perform reinforcement topology optimization on the sandwich model structure.

[0016] Further, the performing longitudinal member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the longitudinal members to determine the longitudinal member configuration includes:

[0017] Determine the longitudinal topology optimization structure based on the profile of the longitudinal member and the profile extrusion ratio;

[0018] Determine the longitudinal member configuration based on the longitudinal topology optimization structure and the wall thickness of the sandwich structure.

[0019] Further, the performing transverse member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the transverse members to determine the transverse member configuration includes:

[0020] Determine the design domain of the transverse member based on the plate characteristics and electrical interfaces of the transverse member;

[0021] Perform transverse member topology optimization based on the design domain of the transverse member and the sandwich structure parameters to determine the transverse member configuration.

[0022] Further, the performing vertical member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical members to determine the vertical member configuration includes:

[0023] Determine the design domain of the vertical member based on the structural characteristics of the vertical member;

[0024] Perform vertical member topology optimization based on the design domain of the vertical member and the vertical load to determine the vertical member configuration.

[0025] A sandwich design system for a maglev vehicle, comprising:

[0026] A first determining unit, configured to determine the sandwich structure parameters of the maglev vehicle based on the maglev vehicle design target and the line condition, where the sandwich structure parameters at least include: stiffness information, strength information, and lightweight parameters;

[0027] A second determination unit, configured to perform topology optimization of the longitudinal members based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the longitudinal members, and determine the longitudinal member configuration.

[0028] A third determination unit, configured to perform topology optimization of the transverse members based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the transverse members, and determine the transverse member configuration.

[0029] A fourth determination unit, configured to perform topology optimization of the vertical members based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical members, and determine the vertical member configuration.

[0030] A generation unit, configured to determine a sandwich model structure based on the longitudinal member configuration, the transverse member configuration, and the vertical member configuration.

[0031] Further, it further includes:

[0032] A judgment unit, configured to judge whether the parameters of the sandwich model structure match the sandwich structure parameters, and determine whether the topology optimization is effective based on the judgment result.

[0033] An electronic device, including:

[0034] A processor, configured to determine the sandwich structure parameters of the maglev vehicle based on the maglev vehicle design objective and the line conditions, where the sandwich structure parameters at least include: stiffness information, strength information, and lightweight parameters; perform topology optimization of the longitudinal members based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the longitudinal members, and determine the longitudinal member configuration; perform topology optimization of the transverse members based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the transverse members, and determine the transverse member configuration; perform topology optimization of the vertical members based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical members, and determine the vertical member configuration; determine a sandwich model structure based on the longitudinal member configuration, the transverse member configuration, and the vertical member configuration;

[0035] A memory, configured to store a program for the processor to execute the above processing procedure.

[0036] A readable storage medium, configured to store at least a set of instruction sets;

[0037] The instruction sets are used to be called and at least execute the method for designing the sandwich of the maglev vehicle as described in any one of the above.

[0038] As can be seen from the above technical solutions, the maglev vehicle sandwich design method, system, and electronic device disclosed in this application determine the sandwich structure parameters of the maglev vehicle based on the maglev vehicle design objectives and line conditions. The sandwich structure parameters at least include: stiffness information, strength information, and lightweight parameters. Longitudinal member topology optimization is performed based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the longitudinal members to determine the longitudinal member configuration. Transverse member topology optimization is performed based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the transverse members to determine the transverse member configuration. Vertical member topology optimization is performed based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical members to determine the vertical member configuration. The sandwich model structure is determined based on the longitudinal member configuration, transverse member configuration, and vertical member configuration. This solution performs topology optimization on the longitudinal members, transverse members, and vertical members of the sandwich structure based on the design objectives and line conditions, so as to finally combine to form the sandwich model structure, achieving the purpose of meeting the parameter requirements such as stiffness, strength, and lightweight based on the design objectives without relying on the initial configuration and the experience of designers, and improving the design freedom. Description of the Drawings

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0040] Figure 1 It is a flowchart of a maglev vehicle sandwich design method disclosed in an embodiment of the present application;

[0041] Figure 2 It is a schematic diagram of a sandwich structure disclosed in an embodiment of the present application;

[0042] Figure 3 It is a flowchart of a maglev vehicle sandwich design method disclosed in an embodiment of the present application;

[0043] Figure 4 It is a schematic diagram of the structure of a maglev vehicle sandwich design system disclosed in an embodiment of the present application;

[0044] Figure 5 It is a schematic diagram of the structure of an electronic device disclosed in an embodiment of the present application. Detailed Description of the Embodiments

[0045] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0046] The present application discloses a method for designing the interlayer of a maglev vehicle. The flowchart is as Figure 1 shown and includes:

[0047] Step S11: Determine the interlayer structure parameters of the maglev vehicle based on the design objectives of the maglev vehicle and the line conditions. The interlayer structure parameters at least include: stiffness information, strength information, and lightweight parameters;

[0048] Step S12: Perform topology optimization of the longitudinal members based on the interlayer structure parameters of the interlayer structure and the structural characteristics of the longitudinal members to determine the longitudinal member configuration;

[0049] Step S13: Perform topology optimization of the transverse members based on the interlayer structure parameters of the interlayer structure and the structural characteristics of the transverse members to determine the transverse member configuration;

[0050] Step S14: Perform topology optimization of the vertical members based on the interlayer structure parameters of the interlayer structure and the structural characteristics of the vertical members to determine the vertical member configuration;

[0051] Step S15: Determine the interlayer model structure based on the longitudinal member configuration, transverse member configuration, and vertical member configuration.

[0052] The interlayer structure of the maglev vehicle is mainly connected by rivets and has a framework of aluminum profiles and aluminum plates. The high requirements for strength and stiffness bring great difficulties to the design of the interlayer. At the same time, with the development of the city and the increase in population, the demand for the speed level of transportation vehicles is gradually increasing, and the demand for lightweight is also increasing. Therefore, there is a certain contradiction in the design of the lightweight, strength, and stiffness of the interlayer structure of the high-speed maglev vehicle.

[0053] Currently, the empirical design method is usually adopted, that is, based on the original configuration and referring to the structure calculated by finite element strength, through the way of cyclic iteration, the weak points in the finite element calculation results are strengthened, and finally the design requirements of the interlayer structure are met. However, this method not only depends on the original configuration, but also has the problem that it cannot ensure that the strength and stiffness of the interlayer structure are not weakened while achieving lightweight.

[0054] The sandwich structure mainly consists of a central control aluminum profile, a plate, a casting, and a connecting unit. The interface characteristic parameters to be optimized for the profile, plate, and casting structures are the bending moments of inertia Iy and Iz, the torsional moment of inertia It, and the cross-sectional area A; the parameter to be optimized for the profile rib unit is the wall thickness T; the relationship between these design variables and the vehicle body performance objectives can be as follows: if the mass of the profile, plate, and casting structures decreases, the cross-sectional area A will decrease; if it is required to increase the stiffness of the profile, plate, and casting, the cross-sectional area A will increase, which creates a conflict, thus prompting A to take a certain value within the constraint interval to achieve the optimum, and such design variables are effective design variables. There are many optimization variables for the sandwich structure, and only the cross-sectional area A of the profile, plate, and casting units and the thickness T of the profile, plate, and casting units can cause the above conflict. Iy, Iz, It, K i,j The changes in these four types of variables have no impact on the objective of mass, but are only related to stiffness. Therefore, under the action of the objective of maximum stiffness, Iy, Iz, It, K i,j j all take the upper limit of the constraint interval, and such an optimization result is meaningless for guiding the optimization of the sandwich structure.

[0055] In this solution, instead of making small-scale adjustments based on the original configuration, a new configuration is rebuilt.

[0056] First, determine the sandwich structure parameters of the maglev vehicle based on the design objectives of the maglev vehicle and the line conditions. Among them, the sandwich structure parameters at least include: stiffness information, strength information, and lightweight parameters. The stiffness information is the stiffness of the sandwich structure, the strength information is the load of the strength simulation analysis, and the lightweight parameter is the design index to be achieved.

[0057] Among them, the design index can include: the vehicle design should meet the basic functional requirements of safety, comfort, and high-speed operation; in addition to meeting the strength and safety requirements, the vehicle body structure also needs to meet certain stiffness requirements to avoid resonance, and the first-order vertical bending natural vibration frequency of the carriage equipped completely and in the free suspension state should not be lower than 7 Hz; the carriage and the sandwich need to adopt an integral load-bearing structure to minimize the vehicle self-weight to the greatest extent, and the design of the vehicle body needs to meet the weight limit requirements of the maglev vehicle; the strength and stiffness of the vehicle body need to meet the various operating conditions requirements during the train operation, and the strength calculation result should not exceed the maximum stress allowed for the material to be used.

[0058] Among them, the factors participating in the combination of operating conditions include: gravity; the first inertial force, generated by the acceleration condition; the second inertial force, generated by the maximum vertical acceleration generated by the vertical curve; the third inertial force, generated by the free lateral acceleration; the fourth inertial force, generated by the driving force.

[0059] Determine the relevant parameters of the sandwich structure of the maglev vehicle based on the line operation conditions and the relevant parameter information of the to-be-designed maglev vehicle, so as to perform topology optimization based on the relevant parameters of the sandwich structure, and thus determine the sandwich model structure of the sandwich structure.

[0060] On the premise of ensuring that the overall dimensions and electrical interfaces of the sandwich structure remain unchanged, it is necessary to determine the basic structures and materials of each component.

[0061] The sandwich structure is a unique structure of the maglev vehicle. According to the overall dimensions of the vehicle body and the installation interface requirements of all electrical equipment, braking equipment, air-conditioning units, and magnet running mechanisms of the maglev vehicle, determine the basic structures and materials of each component.

[0062] Due to the obvious horizontal and vertical distinction of the sandwich structure, with the frame being made of aluminum alloy plates and the horizontal and vertical being made of full-length aluminum profiles, first perform topology optimization on the longitudinal components, then perform topology optimization on the horizontal components, and finally perform topology optimization on the vertical components. After the topology optimization of the longitudinal components, horizontal components, and vertical components, combine the longitudinal component configuration, horizontal component configuration, and vertical component configuration obtained after the topology optimization is completed, so as to obtain the complete sandwich model structure.

[0063] Among them, as Figure 2 shown, it is a schematic diagram of the longitudinal component, horizontal component, and vertical component in the sandwich structure, including: longitudinal component 21, horizontal component 22, and vertical component 23.

[0064] After combining the configurations of each component to obtain the complete sandwich model structure, it also includes:

[0065] Judge whether the parameters of the sandwich model structure match the parameters of the sandwich structure, and determine whether the topology optimization is effective based on the judgment result.

[0066] Among them, determining whether the topology optimization is effective includes: if the judgment result shows that the parameters of the sandwich model structure match the parameters of the sandwich structure, then determine the sandwich model structure as the final configuration of the sandwich structure; if the judgment result shows that the parameters of the sandwich model structure do not match the parameters of the sandwich structure, perform reinforcement topology optimization on the sandwich model structure.

[0067] That is, if the judgment result shows that the parameters of the sandwich model structure match the sandwich structure parameters, it indicates that the topology optimization is effective; if the two do not match, it indicates that the topology optimization is ineffective. At this time, it is necessary to continue with the reinforcement topology optimization. When performing the reinforcement topology optimization, the topology optimization can be directly performed on the complete sandwich model structure, or the topology optimization can be continued for the longitudinal member configuration, transverse member configuration, and vertical member configuration that make up the sandwich model structure respectively until the calculation stops when the requirements such as stiffness and strength are met, otherwise, the stress optimization interval, that is, the optimization variable, is re-determined to ensure that the member configurations in different directions can all reach the optimum.

[0068] Specifically, the finite element method can be used to check and calculate the stiffness and strength of the sandwich structure, so as to judge whether the parameters of the sandwich model structure match the sandwich structure parameters. When making the comparison, parameters such as the weight, low-order modal value, or strength safety factor of the optimized sandwich model structure can be compared and analyzed with the original scheme.

[0069] The sandwich design method for a maglev vehicle disclosed in this embodiment determines the sandwich structure parameters of the maglev vehicle based on the design objectives of the maglev vehicle and the line conditions. The sandwich structure parameters at least include: stiffness information, strength information, and lightweight parameters; perform longitudinal member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the longitudinal members to determine the longitudinal member configuration; perform transverse member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the transverse members to determine the transverse member configuration; perform vertical member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical members to determine the vertical member configuration; determine the sandwich model structure based on the longitudinal member configuration, transverse member configuration, and vertical member configuration. This solution performs topology optimization on the longitudinal members, transverse members, and vertical members of the sandwich structure respectively based on the design objectives and line conditions, so as to finally combine to form a sandwich model structure, achieving the purpose of meeting the parameter requirements such as stiffness, strength, and lightweight based on the design objectives without relying on the initial configuration and the experience of designers, and improving the design freedom.

[0070] This embodiment discloses a sandwich design method for a maglev vehicle, and its flowchart is as Figure 3 shown, including:

[0071] Step S31, determine the sandwich structure parameters of the maglev vehicle based on the design objectives of the maglev vehicle and the line conditions. The sandwich structure parameters at least include: stiffness information, strength information, and lightweight parameters;

[0072] Step S32, determine the longitudinal topology optimization structure based on the profile of the longitudinal member and the profile extrusion ratio, and determine the longitudinal member configuration based on the longitudinal topology optimization structure and the wall thickness of the sandwich structure;

[0073] Step S33: Based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the transverse members, conduct topological optimization of the transverse members to determine the transverse member configuration.

[0074] Step S34: Based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical members, conduct topological optimization of the vertical members to determine the vertical member configuration.

[0075] Step S35: Determine the sandwich model structure based on the longitudinal member configuration, transverse member configuration, and vertical member configuration.

[0076] When determining the longitudinal member configuration, first conduct topological optimization of the longitudinal members to determine the topological optimization design domain, optimization variables, and optimization objectives. According to the profile characteristics of the longitudinal members being long and hollow aluminum profiles, add the constraint condition of the profile extrusion ratio. Through iterative calculations of topological optimization, obtain the optimized topological optimization structure. After determining the topological optimization structure, determine the key points based on this topological optimization structure. On the basis of the key points, add the constraint condition of the wall thickness to determine the key lines. Finally, determine the lightweight and high-strength longitudinal member configuration based on the topological optimization structure and the key points.

[0077] Among them, the structural characteristics of the longitudinal members are mainly composed of large-length hollow aluminum profiles, which are load-bearing structures, and the profile extrusion ratio needs to be considered as a constraint condition.

[0078] Specifically, when optimizing the design of the sandwich structure, in order to make the sandwich structure have greater stiffness, the flexibility of the sandwich structure can be selected as the objective function, and the optimization objective is to minimize the flexibility of the sandwich structure, that is, to maximize the stiffness. Select the relative density of each unit in the design area as the design variable, and select the optimized volume as the constraint condition, requiring that the optimized volume is not greater than a certain percentage of the original optimized design area volume.

[0079] Among them, the design variables are: the selected support beams of the sandwich structure, namely the gas path cavity, E-shaped beam, floor design domain, etc.; the objective is to minimize flexibility; the constraint conditions are: volume fraction constraint, profile extrusion ratio constraint, maximum stress less than the maximum stress allowed for the material, etc.

[0080] Then the mathematical model of the sandwich structure topological optimization is:

[0081] X={X1,X2,......,X n} T

[0082] min C=F T U

[0083]

[0084] Among them, X[[ID=^{39}]] i(i = 1, 2, ..., n) are design variables, i.e., the relative density of each microelement; C is the compliance of the structure; F is the load vector; U is the displacement vector; k is the percentage of remaining material; V1 is the total volume of the remaining material after optimization; V0 is the volume of the design region; K is the stiffness matrix.

[0085] By setting the target tolerance, it is determined whether it is the optimal result. Setting the target tolerance is actually setting the condition for terminating the optimization iteration. During the iteration process, as long as the absolute value of the difference between the optimization objective values calculated continuously twice does not exceed the target tolerance, the iteration is terminated. Define the target tolerance for the topology optimization of the sandwich structure |C i+1 - C i | ≤ 0.003, where C i is the value of the sandwich compliance of the objective function for the i-th iteration, and C i+1 is the value of the sandwich compliance of the objective function for the (i + 1)-th iteration.

[0086] Furthermore, for the configuration of the transverse member, it is actually: determine the design domain of the transverse member based on the plate characteristics and electrical interfaces of the transverse member, and perform topology optimization of the transverse member based on the design domain of the transverse member and the sandwich structure parameters to determine the configuration of the transverse member.

[0087] Based on the structural characteristics of the transverse member, on the premise that the electrical interface remains unchanged, determine the design domain, optimization variables, optimization objectives, etc. of the transverse partition, and obtain the transverse structure configuration through topology optimization iteration.

[0088] Among them, the structural characteristics of the transverse member are mainly composed of plates, non-load-bearing structures, and electrical interfaces need to be reserved in advance for the design domain.

[0089] The design variables for determining the configuration of the transverse member are: the design domain of the transverse partition with the characteristics of the sandwich structure; the objective is to minimize the compliance, and the constraint conditions are: volume fraction constraint, constraint on non-design domain for fixed electrical interfaces, maximum stress less than the maximum stress allowed for the material, etc.

[0090] Furthermore, for the configuration of the vertical member, it is actually: determine the design domain of the vertical member based on the structural characteristics of the vertical member, and perform topology optimization of the vertical member based on the design domain of the vertical member and the vertical load to determine the configuration of the vertical member.

[0091] Determine the design domain, optimization variables, optimization objectives, and draft constraint of the traction rod support of the vertical member according to the vertical load and the structural characteristics of the vertical member, and obtain the configuration of the vertical member through topology optimization iterative calculation.

[0092] [[ID=3

[0093] After determining the longitudinal member configuration, the transverse member configuration, and the vertical member configuration, it is necessary to combine the longitudinal member configuration, the transverse member configuration, and the vertical member configuration with the end connection structure to obtain the sandwich model structure.

[0094] The sandwich design method for the maglev vehicle disclosed in this embodiment determines the sandwich structure parameters of the maglev vehicle based on the maglev vehicle design objectives and line conditions. The sandwich structure parameters at least include: stiffness information, strength information, and lightweight parameters; perform longitudinal member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the longitudinal members to determine the longitudinal member configuration; perform transverse member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the transverse members to determine the transverse member configuration; perform vertical member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical members to determine the vertical member configuration; determine the sandwich model structure based on the longitudinal member configuration, the transverse member configuration, and the vertical member configuration. This solution performs topology optimization on the longitudinal members, transverse members, and vertical members of the sandwich structure respectively based on the design objectives and line conditions, so as to finally combine to form the sandwich model structure, realizing the purpose of meeting the parameter requirements such as stiffness, strength, and lightweight based on the design objectives without relying on the initial configuration and the designer's experience, and improving the design freedom.

[0095] This embodiment discloses a sandwich design system for a maglev vehicle, and its structural schematic diagram is as Figure 4 shown, including:

[0096] The first determination unit 41, the second determination unit 42, the third determination unit 43, the fourth determination unit 44, and the generation unit 45.

[0097] Among them, the first determination unit 41 is used to determine the sandwich structure parameters of the maglev vehicle based on the maglev vehicle design objectives and line conditions. The sandwich structure parameters at least include: stiffness information, strength information, and lightweight parameters;

[0098] The second determination unit 42 is used to perform longitudinal member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the longitudinal members to determine the longitudinal member configuration;

[0099] The third determination unit 43 is used to perform transverse member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the transverse members to determine the transverse member configuration;

[0100] The fourth determination unit 44 is used to perform vertical member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical members to determine the vertical member configuration;

[0101] The generating unit 45 is used to determine the sandwich model structure based on the longitudinal member configuration, the transverse member configuration, and the vertical member configuration.

[0102] Furthermore, the sandwich design system of the maglev vehicle disclosed in this embodiment may further include:

[0103] A judging unit, configured to judge whether the parameters of the sandwich model structure match the sandwich structure parameters, and determine whether the topology optimization is effective based on the judgment result.

[0104] Furthermore, the judging unit determines whether the topology optimization is effective based on the judgment result, including:

[0105] If the judging unit determines that the judgment result indicates that the parameters of the sandwich model structure match the sandwich structure parameters, the sandwich model structure is determined as the final configuration of the sandwich structure; if the judging unit determines that the judgment result indicates that the parameters of the sandwich model structure do not match the sandwich structure parameters, reinforcement topology optimization is performed on the sandwich model structure.

[0106] Furthermore, the second determining unit is configured to:

[0107] Determine the longitudinal topology optimization structure based on the profile and profile extrusion ratio of the longitudinal member; determine the longitudinal member configuration based on the longitudinal topology optimization structure and the wall thickness of the sandwich structure.

[0108] Furthermore, the third determining unit is configured to:

[0109] Determine the design domain of the transverse member based on the plate characteristics and electrical interfaces of the transverse member; perform transverse member topology optimization based on the design domain of the transverse member and the sandwich structure parameters to determine the transverse member configuration.

[0110] Furthermore, the fourth determining unit is configured to:

[0111] Determine the design domain of the vertical member based on the structural characteristics of the vertical member; perform vertical member topology optimization based on the design domain of the vertical member and the vertical load to determine the vertical member configuration.

[0112] The sandwich design system of the maglev vehicle disclosed in this embodiment is implemented based on the sandwich design method of the maglev vehicle disclosed in the above embodiment, and will not be elaborated here.

[0113] The sandwich design system of the maglev vehicle disclosed in this embodiment determines the sandwich structure parameters of the maglev vehicle based on the design objectives of the maglev vehicle and the line conditions. The sandwich structure parameters at least include: stiffness information, strength information, and lightweight parameters; perform topology optimization on the longitudinal members based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the longitudinal members to determine the longitudinal member configuration; perform topology optimization on the transverse members based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the transverse members to determine the transverse member configuration; perform topology optimization on the vertical members based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical members to determine the vertical member configuration; determine the sandwich model structure based on the longitudinal member configuration, the transverse member configuration, and the vertical member configuration. This solution performs topology optimization on the longitudinal members, transverse members, and vertical members of the sandwich structure respectively based on the design objectives and line conditions, so as to finally combine to form a sandwich model structure, realizing the purpose of meeting the parameter requirements such as stiffness, strength, and lightweight based on the design objectives without relying on the initial configuration and the experience of designers, and improving the design freedom.

[0114] This embodiment discloses an electronic device, and its structural schematic diagram is as Figure 5 shown, including:

[0115] a processor 51 and a memory 52.

[0116] Among them, the processor 51 is used to determine the sandwich structure parameters of the maglev vehicle based on the design objectives of the maglev vehicle and the line conditions. The sandwich structure parameters at least include: stiffness information, strength information, and lightweight parameters; perform topology optimization on the longitudinal members based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the longitudinal members to determine the longitudinal member configuration; perform topology optimization on the transverse members based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the transverse members to determine the transverse member configuration; perform topology optimization on the vertical members based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical members to determine the vertical member configuration; determine the sandwich model structure based on the longitudinal member configuration, the transverse member configuration, and the vertical member configuration;

[0117] The memory 52 is used to store the program for the processor to execute the above processing process.

[0118] The electronic device disclosed in this embodiment is implemented based on the maglev vehicle sandwich design method disclosed in the above embodiment, and will not be elaborated here.

[0119] The electronic device disclosed in this embodiment determines the sandwich structure parameters of the maglev vehicle based on the design objectives of the maglev vehicle and the line conditions. The sandwich structure parameters at least include: stiffness information, strength information, and lightweight parameters. Longitudinal member topology optimization is performed based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the longitudinal members to determine the longitudinal member configuration. Transverse member topology optimization is performed based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the transverse members to determine the transverse member configuration. Vertical member topology optimization is performed based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical members to determine the vertical member configuration. The sandwich model structure is determined based on the longitudinal member configuration, transverse member configuration, and vertical member configuration. This solution performs topology optimization on the longitudinal members, transverse members, and vertical members of the sandwich structure respectively based on the design objectives and line conditions, so as to finally combine to form the sandwich model structure, achieving the purpose of meeting the parameter requirements such as stiffness, strength, and lightweight based on the design objectives without relying on the initial configuration and the experience of designers, and improving the design freedom.

[0120] An embodiment of the present application also provides a readable storage medium, on which a computer program is stored. The computer program is loaded and executed by a processor to implement the steps of the above-mentioned maglev vehicle sandwich design method. The specific implementation process can refer to the description of the corresponding part of the above embodiment, and this embodiment will not be elaborated.

[0121] The present application also proposes a computer program product or a computer program. The computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the electronic device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the electronic device executes the methods provided in various alternative implementations of the above-mentioned maglev vehicle sandwich design method or maglev vehicle sandwich design system. The specific implementation process can refer to the description of the corresponding embodiment above and will not be elaborated.

[0122] Each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0123] Those skilled in the art may further realize that the units and algorithm steps of each example described in connection with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. To clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been generally described according to their functions in the above description. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of this application.

[0124] The steps of the methods or algorithms described in connection with the embodiments disclosed herein can be directly implemented by hardware, software modules executed by a processor, or a combination of the two. The software modules can be placed in a random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0125] The above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A design method for the interlayer of a maglev vehicle, characterized in that Including: Determine the sandwich structure parameters of the maglev vehicle based on the design objectives of the maglev vehicle and the line conditions. The sandwich structure parameters at least include: stiffness information, strength information, and lightweight parameters. The stiffness information includes the stiffness of the sandwich structure, the strength information includes the load of the strength simulation analysis, and the lightweight parameters include the design indicators of the maglev vehicle; Conduct longitudinal member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the longitudinal members, and determine the longitudinal member configuration; Conduct transverse member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the transverse members, and determine the transverse member configuration; Conduct vertical member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical members, and determine the vertical member configuration; Determine the sandwich model structure based on the longitudinal member configuration, transverse member configuration, and vertical member configuration; Among them, the conducting longitudinal member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the longitudinal members to determine the longitudinal member configuration includes: determining the longitudinal topology optimization structure based on the profile of the longitudinal member and the profile extrusion ratio; determining the longitudinal member configuration based on the longitudinal topology optimization structure and the wall thickness of the sandwich structure; The conducting transverse member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the transverse members to determine the transverse member configuration includes: determining the design domain of the transverse member based on the plate characteristics and electrical interfaces of the transverse member; conducting transverse member topology optimization based on the design domain of the transverse member and the sandwich structure parameters to determine the transverse member configuration; The conducting vertical member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical members to determine the vertical member configuration includes: determining the design domain of the vertical member based on the structural characteristics of the vertical member; conducting vertical member topology optimization based on the design domain of the vertical member and the vertical load to determine the vertical member configuration.

2. The method according to claim 1, wherein Also including: Judge whether the parameters of the sandwich model structure match the sandwich structure parameters, and determine whether the topology optimization is effective based on the judgment result.

3. The method according to claim 2, wherein The determining whether the topology optimization is effective based on the judgment result includes: If the judgment result shows that the parameters of the sandwich model structure match the sandwich structure parameters, then determine the sandwich model structure as the final configuration of the sandwich structure; If the judgment result shows that the parameters of the sandwich model structure do not match the sandwich structure parameters, conduct reinforcement topology optimization on the sandwich model structure.

4. A sandwich design system for a maglev vehicle, characterized in that, Including: A first determination unit for determining the sandwich structure parameters of the maglev vehicle based on the design objectives of the maglev vehicle and the line conditions. The sandwich structure parameters at least include: stiffness information, strength information, and lightweight parameters. The stiffness information includes the stiffness of the sandwich structure, the strength information includes the load of the strength simulation analysis, and the lightweight parameters include the design indicators of the maglev vehicle; A second determination unit for conducting longitudinal member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the longitudinal members, and determining the longitudinal member configuration; A third determination unit, configured to perform lateral member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the lateral members, and determine the lateral member configuration; A fourth determination unit, configured to perform vertical member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical members, and determine the vertical member configuration; A generation unit, configured to determine the sandwich model structure based on the longitudinal member configuration, the lateral member configuration, and the vertical member configuration; Wherein, the second determination unit is further configured to: Determine the longitudinal topology optimization structure based on the profiles of the longitudinal members and the profile extrusion ratio; determine the longitudinal member configuration based on the longitudinal topology optimization structure and the wall thickness of the sandwich structure; The third determination unit is further configured to: Determine the design domain of the lateral members based on the sheet material characteristics and electrical interfaces of the lateral members; perform lateral member topology optimization based on the design domain of the lateral members and the sandwich structure parameters, and determine the lateral member configuration; The fourth determination unit is further configured to: Determine the design domain of the vertical members based on the structural characteristics of the vertical members; perform vertical member topology optimization based on the design domain of the vertical members and the vertical loads, and determine the vertical member configuration.

5. The system according to claim 4, characterized in that It further includes: A judgment unit, configured to judge whether the parameters of the sandwich model structure match the sandwich structure parameters, and determine whether the topology optimization is effective based on the judgment result.

6. An electronic device, characterized in that, It includes: A processor, configured to determine the sandwich structure parameters of the maglev train based on the design objectives of the maglev train and the line conditions, where the sandwich structure parameters at least include: stiffness information, strength information, and lightweight parameters; perform longitudinal member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the longitudinal members, and determine the longitudinal member configuration; perform lateral member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the lateral members, and determine the lateral member configuration; perform vertical member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical members, and determine the vertical member configuration; determine the sandwich model structure based on the longitudinal member configuration, the lateral member configuration, and the vertical member configuration; the stiffness information includes the stiffness of the sandwich structure, the strength information includes the load of the strength simulation analysis, and the lightweight parameters include the design indicators of the maglev train; Wherein, the performing longitudinal member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the longitudinal members, and determining the longitudinal member configuration includes: determining the longitudinal topology optimization structure based on the profiles of the longitudinal members and the profile extrusion ratio; determining the longitudinal member configuration based on the longitudinal topology optimization structure and the wall thickness of the sandwich structure; The performing lateral member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the lateral members, and determining the lateral member configuration includes: determining the design domain of the lateral members based on the sheet material characteristics and electrical interfaces of the lateral members; performing lateral member topology optimization based on the design domain of the lateral members and the sandwich structure parameters, and determining the lateral member configuration; Performing vertical member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical members to determine the configuration of the vertical members, including: determining the design domain of the vertical members based on the structural characteristics of the vertical members; performing vertical member topology optimization based on the design domain of the vertical members and the vertical load to determine the configuration of the vertical members. A memory for storing a program for the processor to execute the above processing procedure.

7. A readable storage medium for storing at least one set of instruction sets. The instruction sets are used to be called and at least execute the method for designing the sandwich of the maglev vehicle according to any one of the above claims 1-3.

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