WO2023092622A1

WO2023092622A1 - Maglev vehicle interlayer design method and system, and electronic device

Info

Publication number: WO2023092622A1
Application number: PCT/CN2021/134893
Authority: WO
Inventors: 王爱彬; 谭富星; 刘洪涛; 杨晶
Original assignee: 中车长春轨道客车股份有限公司
Priority date: 2021-11-24
Filing date: 2021-12-01
Publication date: 2023-06-01
Also published as: CN114065401A

Abstract

The present application discloses a maglev vehicle interlayer design method and system, and an electronic device. A longitudinal member, a transverse member and a vertical member of an interlayer structure are respectively subjected to topological optimization on the basis of a design target and a line working condition, so that an interlayer model structure is formed by means of a final combination, the purpose of meeting parameter requirements of rigidity, strength, light weight and the like is achieved on the basis of the design target without depending on an initial configuration and experience of a designer, and the design freedom degree is improved.

Description

A kind of interlayer design method, system and electronic equipment of maglev vehicle

This application claims the priority of the Chinese patent application with the application number 202111406764.7 and the title of the invention "a magnetic levitation vehicle interlayer design method, system and electronic equipment" submitted to the China Patent Office on November 24, 2021, the entire content of which is incorporated by reference incorporated in this application.

technical field

The present application relates to the field of maglev vehicles, in particular to a design method, system and electronic equipment for a maglev vehicle interlayer.

Background technique

The interlayer is located under the floor of the compartment, and is a frame structure formed by riveting, welding and bolting of aluminum alloy profiles and plates. The interlayer structure is a unique structure of the maglev vehicle. All relevant electrical equipment, braking equipment, air conditioning units, and magnet running mechanisms in the maglev vehicle are installed in the interlayer and realize their functions. On both sides of the space frame structure, stress-bearing components such as T-shaped brackets and traction rod supports are installed, and air passages and cable connections and passages are provided.

Due to the structural characteristics of the maglev vehicle, the sandwich structure usually undertakes all the functions of the underframe, that is, it is not only connected to the suspension frame, but also the carrier of the coupler, which bears the increased load. At the same time, the sandwich structure passes through the internal skeleton and partitions. And other components accommodate more electrical equipment, which makes the sandwich structure need to have higher strength and rigidity, and at the same time, it is also necessary to ensure the need for lightweight. At present, the design experience of the sandwich structure is usually realized by relying on the designer's design experience, which has the problem of low design freedom and the inability to balance light weight and high rigidity.

Contents of the invention

In view of this, the present application provides a maglev vehicle interlayer design method, system and electronic equipment, and its specific scheme is as follows:

A method for designing a sandwich of a magnetic levitation vehicle, comprising:

Determining the interlayer structure parameters of the maglev vehicle based on the design target of the maglev vehicle and the line working conditions, the sandwich structure parameters at least include: stiffness information, strength information and lightweight parameters;

performing topology optimization of the longitudinal member based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the longitudinal member, and determining the configuration of the longitudinal member;

performing cross-member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the cross-member, and determining the configuration of the cross-member;

Carrying out topology optimization of the vertical component based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical component, and determining the configuration of the vertical component;

A sandwich model structure is determined based on the longitudinal member configuration, transverse member configuration, and vertical member configuration.

Further, it also includes:

Judging whether the parameters of the sandwich model structure match the parameters of the sandwich structure, and determining whether topology optimization is valid based on the judgment result.

Further, the determining whether the topology optimization is valid based on the judgment result includes:

If the judgment result shows that the parameters of the sandwich model structure match the parameters of the sandwich structure, then determining 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, the reinforcement topology optimization is performed on the sandwich model structure.

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

determining a longitudinal topology optimization structure based on the profile of the longitudinal member and the extrusion ratio of the profile;

A longitudinal member configuration is determined based on the longitudinal topology optimized structure and the wall thickness of the sandwich structure.

Further, performing topological optimization of the cross member based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the cross member, and determining the configuration of the cross member include:

determining a design domain of the cross member based on the panel characteristics and the electrical interface of the cross member;

The cross-member topology optimization is performed based on the design domain of the cross-member and the sandwich structure parameters to determine the configuration of the cross-member.

Further, the topology optimization of the vertical components based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical components is carried out to determine the configuration of the vertical components, including:

determining a design domain for the vertical member based on structural features of the vertical member;

The topology optimization of the vertical component is performed based on the design domain and the vertical load of the vertical component, and the configuration of the vertical component is determined.

A sandwich design system for a maglev vehicle, comprising:

The first determination unit is used to determine the sandwich structure parameters of the maglev vehicle based on the design target of the maglev vehicle and the line working conditions, and the sandwich structure parameters at least include: stiffness information, strength information and lightweight parameters;

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

The third determining unit is used to perform topology optimization of the cross member based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the cross member, and determine the configuration of the cross member;

The fourth determination unit is used to perform topology optimization of the vertical component based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical component, and determine the configuration of the vertical component;

A generation unit is used for determining a sandwich model structure based on the configuration of the longitudinal member, the configuration of the transverse member and the configuration of the vertical member.

Further, it also includes:

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

An electronic device comprising:

A processor, configured to determine the sandwich structure parameters of the magnetic levitation vehicle based on the design target of the magnetic levitation vehicle and the line working conditions, the sandwich structure parameters at least include: stiffness information, strength information and lightweight parameters; a sandwich structure based on the sandwich structure The parameters and the structural characteristics of the longitudinal members are carried out to optimize the topology of the longitudinal members to determine the configuration of the longitudinal members; to optimize the topology of the transverse members based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the transverse members to determine the configuration of the transverse members; Carrying out topological optimization of vertical components based on sandwich structural parameters of the structure and structural characteristics of vertical components, and determining vertical component configurations; determining a sandwich model structure based on the longitudinal component configurations, transverse component configurations, and vertical component configurations;

The memory is used to store a program for the processor to execute the above processing procedure.

A readable storage medium for storing at least one set of instructions;

The instruction set is used to be called and at least execute the method of any one of the above-mentioned maglev vehicle sandwich design.

It can be seen from the above technical solutions that the interlayer design method, system and electronic equipment of the magnetic levitation vehicle disclosed in the present application determine the interlayer structural parameters of the magnetic levitation vehicle based on the design objectives of the magnetic levitation vehicle and the line conditions, and the interlayer structural parameters at least include: stiffness information , strength information and lightweight parameters; based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the longitudinal components, the topology optimization of the longitudinal components is performed to determine the configuration of the longitudinal components; based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the transverse components, the topology of the transverse components is performed Optimization, determine the configuration of the transverse member; perform topology optimization of the vertical member based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical member, and determine the configuration of the vertical member; based on the configuration of the longitudinal member, the configuration of the transverse member and the vertical member The configuration determines the sandwich model structure. This scheme 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 facilitate the final combination to form a sandwich model structure. The design goal achieves the purpose of meeting the parameters such as stiffness, strength and light weight, and improves the design freedom.

Description of drawings

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 that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the flow chart of a kind of interlayer design method of maglev vehicle disclosed in the embodiment of the present application;

Fig. 2 is a schematic diagram of a sandwich structure disclosed in an embodiment of the present application;

Fig. 3 is the flow chart of a kind of interlayer design method of maglev vehicle disclosed in the embodiment of the present application;

Fig. 4 is a structural schematic diagram of a magnetic levitation vehicle interlayer design system disclosed in the embodiment of the present application;

FIG. 5 is a schematic structural diagram of an electronic device disclosed in an embodiment of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

This application discloses a method for designing a maglev vehicle interlayer, the flow chart of which is shown in Figure 1, including:

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 sandwich structure parameters at least include: stiffness information, strength information and lightweight parameters;

Step S12, performing topology optimization of the longitudinal member based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the longitudinal member, and determining the configuration of the longitudinal member;

Step S13, performing topology optimization of the transverse member based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the transverse member, and determining the configuration of the transverse member;

Step S14, performing topology optimization of the vertical component based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical component, and determining the configuration of the vertical component;

Step S15, determining the sandwich model structure based on the configuration of the longitudinal member, the configuration of the transverse member and the configuration of the vertical member.

The sandwich structure of the maglev vehicle is mainly connected by rivets, and the sandwich is made of aluminum profiles and aluminum plates. The high requirements for strength and rigidity bring great difficulties to the design of the sandwich; at the same time, with the development of cities and the increase in population, The demand for the speed grade of transportation vehicles is also gradually increasing, and the demand for lightweight is also increasing. Therefore, there is a certain contradiction between the design of lightweight and strength and stiffness of the sandwich structure of high-speed maglev vehicles.

At present, the empirical design method is usually used, that is, based on the original configuration and referring to the structure calculated by the finite element strength, the weak points in the finite element calculation results are reinforced through cyclic iterations, and finally the design requirements of the sandwich structure are met. However, this method not only depends on the original configuration, but also has the problem of not being able to reduce the weight without weakening the strength and stiffness of the sandwich structure.

The sandwich structure is mainly composed of central control aluminum profiles, plates, castings and connecting units. The interface characteristic parameters to be optimized for profiles, plates, and casting structures include bending moments of inertia Iy and Iz, torsional moments of inertia It, and cross-sectional area A; parameters for profile rib unit optimization are wall thickness T; these design variables are related to vehicle body performance objectives. The relationship can be: if the structural quality of profiles, plates, and castings decreases, the cross-sectional area A will decrease; if the stiffness of profiles, plates, and castings is required to increase, the cross-sectional area A will increase, thus causing a conflict. Therefore, A takes a certain value within the constraint interval to achieve the optimum, and such a design variable is an effective design variable. There are many optimization variables for the sandwich structure, and only the cross-sectional area A of the profile, plate, and casting unit and the thickness T of the profile, plate, and casting unit can cause the above-mentioned conflicts. The change of the four types of variables Iy, Iz, It, K _{i, j} has no effect on the target of quality, but is only related to stiffness. Therefore, under the effect of the goal of maximum stiffness, Iy, Iz, It, K _{i, j} j all take the upper limit of the constrained interval, and such optimization results are meaningless to guide the optimization of sandwich structures.

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

Firstly, the sandwich structure parameters of the maglev vehicle are determined 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 is the stiffness of the sandwich structure, the strength information is the strength simulation analysis load, and the lightweight parameters are the design indicators that need to be achieved.

Among them, the design indicators may 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 rigidity requirements to avoid resonance, complete equipment and be in free suspension The natural frequency of the first-order vertical bending of the car in the state is not less than 7Hz; the car and the interlayer must adopt an integral load-bearing structure to minimize the vehicle's own weight, and the design of the car body must meet the weight limit requirements of the maglev vehicle; the strength and stiffness of the car body It needs to meet the requirements of various operating conditions when the train is running, and the strength calculation result should not exceed the maximum stress allowed by the material.

Among them, the factors involved in the combination of working conditions include: gravity; the first inertial force, which is generated by the acceleration condition; the second inertial force, which is generated by the maximum vertical acceleration generated by the vertical curve; the third inertial force, which is generated by the free lateral acceleration; The fourth inertial force is generated by driving power.

Determine the relevant parameters of the sandwich structure of the maglev vehicle based on the operation of the line and the relevant parameter information of the maglev vehicle to be designed, so as to perform topology optimization based on the relevant parameters of the sandwich structure, thereby determining the sandwich model structure of the sandwich structure.

Under the premise that the overall size and electrical interface of the sandwich structure remain unchanged, the basic structure and materials of each component need to be determined.

The sandwich structure is a unique structure of the maglev vehicle. The basic structure and materials of each component are determined according to the overall size 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.

Due to the obvious distinction between horizontal and vertical interlayers, the frame is made of aluminum alloy plate, and the horizontal and vertical are the structural characteristics of long aluminum profiles. Firstly, the topology optimization of the longitudinal components is carried out, followed by the topology optimization of the horizontal components, and finally the topology optimization of the vertical components. After optimization, topology optimization of transverse components and topology optimization of vertical components, the longitudinal component configuration, transverse component configuration and vertical component configuration obtained after topology optimization are combined to obtain a complete sandwich model structure.

Wherein, as shown in FIG. 2 , it is a schematic view of the longitudinal member, the transverse member and the vertical member in the sandwich structure, including: the longitudinal member 21 , the transverse member 22 and the vertical member 23 .

After combining the configurations of each component, the complete sandwich model structure is obtained, which also includes:

Judging whether the parameters of the sandwich model structure match the parameters of the sandwich structure, and determining whether the topology optimization is valid based on the judgment result.

Wherein, determining whether the topology optimization is valid includes: if the judgment result shows that the parameters of the sandwich model structure match the sandwich structure parameters, then determining 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 match the sandwich structure parameters Structural parameters do not match, and the reinforcement topology optimization is performed on the sandwich model structure.

That is, if the judgment result shows that the parameters of the sandwich model structure match the parameters of the sandwich structure, it indicates that the topology optimization is effective; if the two do not match, it indicates that the topology optimization is invalid, and at this time, it is necessary to continue to reinforce the topology optimization. When performing reinforcement topology optimization, topology optimization can be directly performed on the complete sandwich model structure, or topology optimization can be continued on the longitudinal member configuration, transverse member configuration and vertical member configuration that make up the sandwich model structure. Stop the calculation until the requirements of stiffness and strength are met, otherwise, re-determine the stress optimization interval, that is, optimize the variables, so as to ensure that the component configurations in different directions can be optimized.

Specifically, the stiffness and strength of the sandwich structure can be checked and calculated by means of finite elements, so as to realize whether the parameters of the sandwich model structure match the parameters of the sandwich structure. During the comparison, parameters such as the weight, low-order modal value or strength safety factor of the optimized sandwich model structure can be compared with the original scheme.

The interlayer design method of the maglev vehicle disclosed in this embodiment determines 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; The topology optimization of the longitudinal member is carried out based on the sandwich structure parameters and the structural characteristics of the longitudinal member to determine the configuration of the longitudinal member; the topology optimization of the transverse member is carried out 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; The sandwich structure parameters and the structural characteristics of the vertical components are topologically optimized to determine the configuration of the vertical components; the sandwich model structure is determined based on the configuration of the longitudinal components, the configuration of the transverse components and the configuration of the vertical components. This scheme 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 facilitate the final combination to form a sandwich model structure. The design goal achieves the purpose of meeting the parameters such as stiffness, strength and light weight, and improves the design freedom.

This embodiment discloses a method for designing an interlayer of a maglev vehicle, the flow chart of which is shown in Figure 3, including:

Step S31. Determine the interlayer 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;

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

Step S33, performing topology optimization of the transverse member based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the transverse member, and determining the configuration of the transverse member;

Step S34, performing topology optimization of the vertical component based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical component, and determining the configuration of the vertical component;

Step S35, determining the sandwich model structure based on the configuration of the longitudinal member, the configuration of the transverse member and the configuration of the vertical member.

When determining the configuration of the longitudinal member, the topology optimization of the longitudinal member is carried out first, and the topology optimization design domain, optimization variables and optimization objectives are determined. The topology optimization iterative calculation obtains the optimized topology optimization structure; after the topology optimization structure is determined, the key points are determined based on the topology optimization structure. Topology optimization structure and key points determine the configuration of lightweight and high-strength longitudinal members.

Among them, the structural characteristics of the longitudinal members are mainly composed of large and long hollow aluminum profiles, and the load-bearing structure needs to consider the profile extrusion ratio as a constraint condition.

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 goal is to minimize the flexibility of the sandwich structure, that is, to maximize the stiffness. The relative density of each unit in the design area is selected as the design variable, and the optimized volume is selected as the constraint condition, and the optimized volume is required not to be greater than a certain percentage of the volume of the original optimized design area.

Among them, the design variables are: the supporting beam selected for the sandwich structure, that is, the air channel cavity, the E-beam, the floor design domain, etc.; the goal is to minimize the flexibility; the constraint conditions are: volume fraction constraint, profile extrusion ratio constraint, The maximum stress is less than the maximum stress allowed by the material, etc.

Then the mathematical model of sandwich structure topology optimization is:

X＝{X ₁ ,X ₂ ,...,X _n } ^T

min C＝F ^T U

Among them, Xi ( _i =1,2,...,n) is the design variable, that is, the relative density of each micro-unit; C is the flexibility of the structure; F is the load vector; U is the displacement vector; k is the residual Material percentage; V ₁ is the total volume of remaining material after optimization; V ₀ is the volume of the design area; K is the stiffness matrix.

Determine if it is an optimal result by setting a target tolerance. Setting the target tolerance is actually setting the conditions for the termination of the optimization iteration. During the iteration process, as long as the absolute value of the difference between the optimized target values calculated twice in a row does not exceed the target tolerance, the iteration will be terminated. Define the target tolerance of sandwich structure topology optimization |C _i+1 -C _i |≤0.003, where C _i is the value of the interlayer compliance of the objective function of the i-th iteration, and C _i+1 is the value of the i+1-th iteration The value of the objective function interlayer compliance.

Furthermore, for the configuration of the transverse member, the practice is: to determine the design domain of the transverse member based on the plate characteristics and electrical interface of the transverse member, to perform topology optimization of the more similar member based on the design domain of the transverse member and the parameters of the sandwich structure, and to determine the structure of the transverse member. type.

Based on the structural characteristics of the transverse member and the premise that the electrical interface remains unchanged, the design domain, optimization variables, and optimization objectives of the transverse diaphragm are determined, and the transverse structural configuration is obtained through topology optimization iterations.

Among them, the structural feature of the transverse member is that it is mainly composed of plates and is a non-load-bearing structure. The design domain needs to reserve electrical interfaces in advance.

The design variables to determine the configuration of the transverse member are: the design domain of the transverse diaphragm with the characteristics of the sandwich structure; the goal is to minimize the flexibility, and the constraints are: volume fraction constraints, non-design domain constraints for fixed electrical interfaces, maximum stress less than material Allowable maximum stress, etc.

Furthermore, for the configuration of vertical components, the actual method is: determine the design domain of the vertical components based on the structural characteristics of the vertical components, perform topology optimization of the vertical components based on the design domain of the vertical components and the vertical load, and Component configuration.

According to the vertical load and the structural characteristics of the vertical member, the design domain, optimization variables, optimization objectives, and draft constraints of the vertical member traction rod support are determined, and the vertical member configuration is obtained through topology optimization iterative calculation.

The design variables are: the design domain of the traction rod support specific to the sandwich structure, the goal is to minimize the compliance, and the constraints are: volume fraction constraints, draft slope constraints, the maximum stress is less than the allowable stress of the material, etc.

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

This embodiment discloses a maglev car interlayer design system, the structural diagram of which is shown in Figure 4, including:

A first determining unit 41 , a second determining unit 42 , a third determining unit 43 , a fourth determining unit 44 and a generating unit 45 .

Wherein, the first determining unit 41 is used to determine the sandwich structure parameters of the maglev vehicle based on the design target of the maglev vehicle and the line working conditions, and the sandwich structure parameters at least include: stiffness information, strength information and lightweight parameters;

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

The third determining unit 43 is used to perform topology optimization of the cross member based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the cross member, and determine the configuration of the cross member;

The fourth determination unit 44 is used to perform topology optimization of the vertical component based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical component, and determine the configuration of the vertical component;

The generation unit 45 is used to determine the sandwich model structure based on the configuration of the longitudinal member, the configuration of the transverse member and the configuration of the vertical member.

Further, the interlayer design system for maglev vehicles disclosed in this embodiment may also include:

The judging unit is configured to judge whether the parameters of the sandwich model structure match the parameters of the sandwich structure, and determine whether the topology optimization is valid based on the judging result.

Further, the judgment unit determines whether the topology optimization is valid based on the judgment result, including:

If the judgment unit determines that the judgment result shows that the parameters of the sandwich model structure match the sandwich structure parameters, then the sandwich model structure is determined as the final configuration of the sandwich structure; if the judgment unit determines that the judgment result shows that the parameters of the sandwich model structure do not match the sandwich structure parameters , the reinforcement topology optimization of the sandwich model structure is carried out.

Further, the second determining unit is used for:

The longitudinal topology optimization structure is determined based on the profile of the longitudinal member and the extrusion ratio of the profile; the configuration of the longitudinal member is determined based on the longitudinal topology optimization structure and the wall thickness of the sandwich structure.

Further, the third determining unit is used for:

The design domain of the transverse member is determined based on the plate characteristics and electrical interface of the transverse member; the topology optimization of the transverse member is carried out based on the design domain of the transverse member and the parameters of the sandwich structure, and the configuration of the transverse member is determined.

Further, the fourth determining unit is used for:

The design domain of vertical components is determined based on the structural characteristics of vertical components; the topology optimization of vertical components is performed based on the design domain of vertical components and the vertical load, and the configuration of vertical components is determined.

The interlayer design system for maglev vehicles disclosed in this embodiment is realized based on the interlayer design method for maglev vehicles disclosed in the above embodiments, and will not be repeated here.

The interlayer design system for the maglev vehicle disclosed in this embodiment determines 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; The topology optimization of the longitudinal member is carried out based on the sandwich structure parameters and the structural characteristics of the longitudinal member to determine the configuration of the longitudinal member; the topology optimization of the transverse member is carried out 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; The sandwich structure parameters and the structural characteristics of the vertical components are topologically optimized to determine the configuration of the vertical components; the sandwich model structure is determined based on the configuration of the longitudinal components, the configuration of the transverse components and the configuration of the vertical components. This scheme 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 facilitate the final combination to form a sandwich model structure. The design goal achieves the purpose of meeting the parameters such as stiffness, strength and light weight, and improves the design freedom.

This embodiment discloses an electronic device, the schematic diagram of which is shown in Figure 5, including:

processor 51 and memory 52 .

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 working conditions. The sandwich structure parameters at least include: stiffness information, strength information and lightweight parameters; sandwich structure parameters and longitudinal members based on the sandwich structure Based on the structural characteristics of the longitudinal member, the topology optimization of the longitudinal member is carried out to determine the configuration of the longitudinal member; the topology optimization of the transverse member is performed based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the transverse member, and the configuration of the transverse member is determined; based on the sandwich structure parameters of the sandwich structure and the vertical The structural characteristics of the components are optimized for the topology of the vertical components to determine the configuration of the vertical components; the structure of the sandwich model is determined based on the configuration of the longitudinal components, the configuration of the transverse components and the configuration of the vertical components;

The memory 52 is used to store programs for the processor to execute the above-mentioned processing procedures.

The electronic equipment disclosed in this embodiment is implemented based on the design method for the interlayer of the magnetic levitation vehicle disclosed in the above embodiments, and will not be repeated here.

For the electronic equipment disclosed in this embodiment, the sandwich structure parameters of the magnetic levitation vehicle are determined based on the design objectives of the magnetic levitation vehicle and the line working conditions. The sandwich structure parameters at least include: stiffness information, strength information, and lightweight parameters; sandwich structure parameters based on the sandwich structure and the structural characteristics of the longitudinal members, the topology optimization of the longitudinal members is carried out to determine the configuration of the longitudinal members; the topology optimization of the transverse members is carried out based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the transverse members, and the configuration of the transverse members is determined; the sandwich structure parameters based on the sandwich structure The topology optimization of vertical components is carried out according to the structural characteristics of vertical components, and the configuration of vertical components is determined; the sandwich model structure is determined based on the configuration of longitudinal components, transverse components and vertical components. This scheme 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 facilitate the final combination to form a sandwich model structure. The design goal achieves the purpose of meeting the parameters such as stiffness, strength and light weight, and improves the design freedom.

The embodiment of the present application also provides a readable storage medium on which a computer program is stored, and the computer program is loaded and executed by a processor to realize the steps of the above-mentioned maglev vehicle interlayer design method. The specific implementation process can refer to the above-mentioned implementation The description of the corresponding part of the example is not repeated in this embodiment.

The present application also proposes a computer program product or computer program, the computer program product or computer program comprising computer instructions stored in a computer-readable storage medium. The processor of the electronic device reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the electronic device executes various optional implementations of the above-mentioned maglev vehicle interlayer design method or maglev vehicle interlayer design system. For the method provided in , the specific implementation process can refer to the description of the above-mentioned corresponding embodiments, and details are not repeated here.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for relevant details, please refer to the description of the method part.

Professionals can further realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software or a combination of the two. In order to clearly illustrate the possible For interchangeability, in the above description, the composition and steps of each example have been generally described according to their functions. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

The steps of the methods or algorithms described in connection with the embodiments disclosed herein may be directly implemented by hardware, software modules executed by a processor, or a combination of both. Software modules can be placed in 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 Any other known storage medium.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

A kind of magnetic levitation vehicle interlayer design method, is characterized in that, comprises:

Determining the interlayer structure parameters of the maglev vehicle based on the design target of the maglev vehicle and the line working conditions, the sandwich structure parameters at least include: stiffness information, strength information and lightweight parameters;

performing topology optimization of the longitudinal member based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the longitudinal member, and determining the configuration of the longitudinal member;

performing cross-member topology optimization based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the cross-member, and determining the configuration of the cross-member;

Carrying out topology optimization of the vertical component based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical component, and determining the configuration of the vertical component;

A sandwich model structure is determined based on the longitudinal member configuration, transverse member configuration, and vertical member configuration.
The method according to claim 1, further comprising:

Judging whether the parameters of the sandwich model structure match the parameters of the sandwich structure, and determining whether topology optimization is valid based on the judgment result.
The method according to claim 2, wherein the determining whether the topology optimization is valid based on the judgment result comprises:

If the judgment result shows that the parameters of the sandwich model structure match the parameters of the sandwich structure, then determining 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, the reinforcement topology optimization is performed on the sandwich model structure.
The method according to claim 1, characterized in that, performing topology optimization of the longitudinal member based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the longitudinal member, to determine the configuration of the longitudinal member, comprising:

determining a longitudinal topology optimization structure based on the profile of the longitudinal member and the extrusion ratio of the profile;

A longitudinal member configuration is determined based on the longitudinal topology optimized structure and the wall thickness of the sandwich structure.
The method according to claim 1, characterized in that, performing topology optimization of the cross member based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the cross member, and determining the configuration of the cross member include:

determining a design domain of the cross member based on the panel characteristics and the electrical interface of the cross member;

The cross-member topology optimization is performed based on the design domain of the cross-member and the sandwich structure parameters to determine the configuration of the cross-member.
The method according to claim 1, characterized in that, performing topology optimization of vertical components based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical components, to determine the configuration of the vertical components, comprising:

determining a design domain for the vertical member based on structural features of the vertical member;

The topology optimization of the vertical component is performed based on the design domain and the vertical load of the vertical component, and the configuration of the vertical component is determined.
A maglev car interlayer design system is characterized in that it comprises:

The first determination unit is used to determine the sandwich structure parameters of the maglev vehicle based on the design target of the maglev vehicle and the line working conditions, and the sandwich structure parameters at least include: stiffness information, strength information and lightweight parameters;

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

The third determining unit is used to perform topology optimization of the cross member based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the cross member, and determine the configuration of the cross member;

The fourth determination unit is used to perform topology optimization of the vertical component based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the vertical component, and determine the configuration of the vertical component;

A generation unit is used for determining a sandwich model structure based on the configuration of the longitudinal member, the configuration of the transverse member and the configuration of the vertical member.
The system according to claim 7, further comprising:

A judging unit, configured to judge whether the parameters of the sandwich model structure match the parameters of the sandwich structure, and determine whether topology optimization is valid based on the judging result.
An electronic device, characterized in that it comprises:

A processor, configured to determine the sandwich structure parameters of the magnetic levitation vehicle based on the design target of the magnetic levitation vehicle and the line working conditions, the sandwich structure parameters at least include: stiffness information, strength information and lightweight parameters; a sandwich structure based on the sandwich structure The parameters and the structural characteristics of the longitudinal members are carried out to optimize the topology of the longitudinal members to determine the configuration of the longitudinal members; to optimize the topology of the transverse members based on the sandwich structure parameters of the sandwich structure and the structural characteristics of the transverse members to determine the configuration of the transverse members; Carrying out topological optimization of vertical components based on sandwich structural parameters of the structure and structural characteristics of vertical components, and determining vertical component configurations; determining a sandwich model structure based on the longitudinal component configurations, transverse component configurations, and vertical component configurations;

The memory is used to store a program for the processor to execute the above processing procedure.
A readable storage medium for storing at least one set of instructions;

The instruction set is used to be called and at least execute the method of any one of the above-mentioned maglev vehicle sandwich design.