Topological optimization method, device and equipment for lightening valve bracket and medium

Abstract

The invention provides a valve support lightweight topological optimization method, device, equipment and medium wherein the method comprises: determining product information, improvement requirement information and material information of a valve support wherein the product information at least comprises a constraint position, a constraint degree of freedom, a load size and a load applying position; the improvement requirement information at least comprises necessary features and unnecessary features; removing unnecessary features from the valve bracket model according to the improvement requirement information to form a simplified model; performing grid division on the simplified model to form a grid model; and giving material information to the grid model, applying constraint and load on the grid model according to the product information, establishing an initial model, and generating an initial analysis result. According to the scheme, the production efficiency can be effectively improved, and product light weight and cost control are achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of valve component optimization, and in particular relates to a topological optimization method, device, equipment and medium for lightweighting a valve bracket. Background Art

[0002] In modern industry, valve brackets are important supporting components of valves and are often used in various valves and fluid systems. With the continuous improvement of equipment performance and energy efficiency requirements, the design of valve brackets also needs to be continuously optimized to minimize material usage, reduce weight, and improve overall system efficiency while ensuring its strength and rigidity.

[0003] Traditional valve bracket design mainly relies on experience and simple finite element analysis. Designers select appropriate materials and geometric shapes based on load conditions and empirical data. However, this method often fails to fully utilize the performance of the material, resulting in a heavy bracket and serious material waste. At the same time, due to the heavy weight of the bracket, the fluid system has a large deadweight, so the other corresponding components also need to be designed with higher performance. Therefore, the design of the bracket will affect the product design of the entire valve system.

[0004] In addition, traditional design methods have difficulty in dealing with complex load conditions and multi-constraint conditions. Complex systems must consider the distribution of stress, but traditional design methods are difficult to meet this requirement. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a topological optimization method, device, equipment and medium for lightweight valve bracket, so as to solve the above-mentioned problems.

[0006] The topological optimization method for lightweighting a valve bracket provided by the present invention comprises:

[0007] Determine product information, improvement requirement information and material information of the valve bracket, wherein the product information includes at least constraint position, constraint degree of freedom, load size and load application position, and the improvement requirement information includes at least necessary features and non-essential features;

[0008] According to the improvement requirement information, unnecessary features are removed from the valve bracket model to form a simplified model;

[0009] Performing mesh division on the simplified model to form a mesh model;

[0010] Material information is given to the grid model, and constraints and loads are applied to the grid model according to the product information to establish an initial model and generate initial analysis results.

[0011] In one embodiment of the present invention, after generating the initial analysis result, the method further includes:

[0012] Obtain material retention information and initial model to generate an optimized model;

[0013] Applying the constraints and the loads to the optimization model to generate optimization analysis results;

[0014] The optimization analysis results are compared with preset targets to determine the verification results of the optimization model.

[0015] In one embodiment of the present invention, the mesh model is given material information, and constraints and loads are applied to the mesh model according to the product information, an initial model is established, and initial analysis results are generated, including:

[0016] Based on the material information, a target material with a density value between (0, 1) is introduced;

[0017] A mapping relationship is established between the target material modulus and the material density, and each mesh unit of the mesh is used as a design variable;

[0018] A penalty factor is introduced for the intermediate density values ​​so that the intermediate density values ​​are concentrated towards 0 and 1.

[0019] In an exemplary embodiment of the present invention, obtaining material retention information and an initial model and generating an optimization model include:

[0020] Distinguishing a design space and a non-design space on the initial model, wherein the structure in the non-design space is fixed;

[0021] Optimization model creation is performed within the design space.

[0022] In one embodiment of the present invention, the calculation formula of the initial analysis result includes:

[0023] find:X={x1,x2……x n}

[0024] min:

[0025] st:

[0026]

[0027] in,

[0028] xi is the relative density of each grid unit in the design space, i = {1, 2, ..., n}; F is the node load vector; K is the stiffness matrix of the structure; U is the node displacement vector; V eis the total volume of the remaining material after optimization; V0 is the total volume of the initial design area; φ is the volume ratio of the remaining material in the design space; K′ x is the stiffness in the X direction at the loading point after optimization; K x To optimize the stiffness in the X direction at the front loading point; K′ y is the stiffness in the Y direction at the loading point after optimization; K y K′ is the stiffness in the Y direction at the front loading point of the optimization; z is the stiffness in the Z direction at the loading point after optimization; K z To optimize the stiffness in the Z direction at the front loading point; E i is the elastic modulus of the i-th grid unit; E0 is the elastic modulus of the structural material; E min is the elastic modulus value of the grid unit where the non-essential characteristic material is located; p is the penalty factor.

[0029] In one embodiment of the present invention, after meshing the simplified model, the method further includes:

[0030] Mesh quality check ensures that the mesh’s aspect ratio, tetrahedron collapse ratio, and distortion meet preset quality standards.

[0031] In one embodiment of the present invention, applying constraints and loads on the grid model according to the product information includes:

[0032] Couple the bolt hole to the center position of the upper end surface of the valve bracket;

[0033] Apply forces in various directions at the bolt hole coupling point;

[0034] The translational freedom of all nodes on the contact surface between the valve bracket and the valve body is constrained in all directions, so that the bracket cannot move or rotate in all directions.

[0035] The valve bracket lightweight topology optimization device provided by the present invention comprises:

[0036] An information determination module, used to determine product information, improvement requirement information and material information of the valve bracket, wherein the product information at least includes constraint position, constraint degree of freedom, load size and load application position, and the improvement requirement information at least includes necessary features and non-essential features;

[0037] A simplified model generation module is used to remove unnecessary features from the valve bracket model according to the improvement requirement information to form a simplified model;

[0038] A mesh model generation module, used for meshing the simplified model to form a mesh model;

[0039] The initial model generation module is used to give the mesh model material information, and to impose constraints and loads on the mesh model according to the product information, to establish an initial model, and to generate initial analysis results.

[0040] The electronic device provided by the present invention comprises:

[0041] one or more processors;

[0042] A storage device is used to store one or more programs. When the one or more programs are executed by the one or more processors, the electronic device implements the topology optimization method for lightweight valve bracket.

[0043] The computer-readable storage medium provided by the present invention stores a computer program thereon, and when the computer program is executed by a processor of a computer, the computer is enabled to execute the topological optimization method for lightweighting a valve bracket.

[0044] Beneficial effects of the present invention: The present invention can optimize the design of the valve bracket so that it can achieve weight reduction while meeting functional requirements. This not only helps to reduce material costs, but also improves the efficiency and ease of use of the bracket. The design steps and methods adopted by the present invention can also be applied to other parts of the valve, such as cranks, housings and other structures. The versatility of this method makes it possible to optimize the overall valve system, and to improve the performance and reliability of the entire valve system by optimizing the performance of a single component in a point-to-surface manner.

[0045] Due to the lightweight design and the removal of redundant and invalid designs, the material usage and processing complexity in the manufacturing process are reduced, which directly reduces the manufacturing cost. In addition, the simplified design may also shorten the production time and improve production efficiency.

[0046] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0048] Figure 1 It is a flow chart of a topology optimization method for lightweight valve bracket shown in an exemplary embodiment of the present application.

[0049] Figure 2It is a block diagram of a topological optimization device for lightweight valve bracket shown in an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0050] The following will describe the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.

[0051] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0052] In the following description, numerous details are discussed to provide a more thorough explanation of the embodiments of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present invention difficult to understand.

[0053] See also Figure 1 , Figure 1 It is a flow chart of a topology optimization method for lightweight valve bracket shown in an exemplary embodiment of the present application.

[0054] like Figure 1 As shown, in an exemplary embodiment, the topology optimization method for lightweight valve bracket includes at least steps S110 to S140, which are described in detail as follows:

[0055] Step S110, determining the product information, improvement requirement information and material information of the valve bracket, the product information at least includes the constraint position, constraint degree of freedom, load size and load application position, and the improvement requirement information at least includes necessary features and non-essential features.

[0056] It is worth mentioning that the valve bracket (referred to as the bracket) is an important component that supports and connects the pneumatic actuator and the valve body. Its function runs through the entire process of control valve operation, so the design of the bracket needs to take into account the following aspects.

[0057] (1) Strength: During the operation of the control valve, the bracket will bear the load from the pneumatic actuator. High strength can ensure that the bracket can stably bear these loads without significant deformation or even breakage. Otherwise, the failure rate of the control valve will increase during normal operation, causing serious safety accidents.

[0058] (2) Rigidity: The control valve is a control element that controls the flow of fluid. If the bracket does not meet the rigidity requirements, the coaxiality of the valve core and valve stem will deteriorate, the valve stroke error will increase, and the precision adjustment performance will be significantly reduced. In serious cases, the control valve components will be squeezed and the moving parts will be scratched, resulting in deformation of the O-ring, uneven force, poor sealing, and leakage of the actuator.

[0059] (3) Weight: Lightweight brackets can reduce the impact of the bracket itself on the control valve system during fluid movement, improve the response speed and dynamic stability of the control valve. In addition, it can also reduce material costs and transportation costs and improve the flexibility of its assembly and maintenance.

[0060] Thirdly, we deeply understand the operation status of the bracket in actual work, and determine the constraint position, constraint degree of freedom, load size and application position of the original bracket model based on the information obtained. Analysis shows that the bottom of the bracket is connected to the valve body with a locking nut, and it cannot move relative to the valve body during operation, so the XYZ translational degree of freedom of the contact surface between the bracket and the valve body must be constrained; the top is connected to the pneumatic actuator through six bolts and is subject to the load from the pneumatic actuator.

[0061] For example, a force analysis of the bracket shows that the bracket is subjected to forces in three directions, namely 2000N in the X direction, -88623.3N in the Y direction, and 2000N in the Z direction.

[0062] Step S120: According to the improvement requirement information, unnecessary features are removed from the valve support model to form a simplified model.

[0063] It should be noted that the improvement requirement information includes necessary features and non-essential features. Necessary features are features that cannot be removed from the bracket, and non-essential features are features that can be changed or removed. For example, some chamfers, round holes, and fillets of the bracket are necessary for manufacturing, but their impact on the analysis results is small and can be simplified to improve the mesh quality and reduce calculation errors and calculation consumption.

[0064] Step S130, meshing the simplified model to form a mesh model.

[0065] It should be emphasized that finite element analysis is based on mathematics to decompose complex systems into smaller and simpler subdomains (i.e. units), and then solve each unit to obtain a matrix equation system, and finally solve the algebraic equation system by numerical methods to obtain an approximate solution to the complex system. Meshing is to decompose a complex system into a finite number of mesh units. For example, tetrahedral units are used for meshing, with an average mesh size of 5 mm and 172,974 units.

[0066] Then, the mesh quality is checked to ensure that the aspect ratio, tetrahedron collapse ratio, and distortion meet the quality standards to avoid the mesh quality affecting the accuracy and stability of the solution.

[0067] Step S140, assigning material information to the mesh model, applying constraints and loads to the mesh model according to product information, establishing an initial model, and generating initial analysis results.

[0068] For example, the scaffold material is WCB, which has an elastic modulus of 210000 MPa, a Poisson's ratio of 0.3, and a density of 7.85E-9t / mm 3 , and assign it to the mesh model that has been divided into meshes.

[0069] The process of creating constraints and loads includes: using REB2 units to couple the bolt holes to the center of the upper end face of the bracket, applying forces in the three directions of XYZ at the coupling point, and constraining the translational freedom of all nodes on the contact surface between the bracket and the valve body, so that the bracket cannot move or rotate along the XYZ direction, and the initial model that meets the actual operation of the bracket is established.

[0070] Afterwards, stress and displacement calculations are performed to obtain initial analysis results.

[0071] Exemplarily, the Optistruct solver is called to calculate the initial model to obtain the displacement results of the model under the constraint load, as shown in Table 1.

[0072] Table 1 Initial analysis results of the initial model

[0073]

[0074] In an exemplary embodiment, after generating the initial analysis result, the method further includes steps S210 to S230.

[0075] Step S210, obtaining material retention information and an initial model, and generating an optimized model.

[0076] Exemplarily, the design space and the non-design space are determined. The area required for the assembly of the bracket is determined as the non-design space, and the structure of the non-design space is fixed. The remaining part is set as the design space, and the design space is the designable area.

[0077] After determining the design space and non-design space, the optimization model is created. The optimization model also uses tetrahedral elements for meshing, with an average mesh size of 5 mm and a total of 170,353 solid elements. The materials, properties, constraints, and loads are all consistent with the initial model.

[0078] The bracket is of symmetrical structure and is cast. Two-way draft constraints along the Z-axis direction and symmetric constraints about the XY plane and the YZ plane are imposed on the bracket, thereby improving the manufacturability of the bracket and reducing the manufacturing cost.

[0079] Step S220: applying constraints and loads to the optimization model to generate optimization analysis results.

[0080] The goal of this optimization is to achieve lightweight while ensuring stiffness and strength, so the minimization of the bracket mass is used as the objective function, and the displacement constraint (-0.29mm~0.29mm) and the stress constraint are set to be no more than 248Mpa.

[0081] Step S230, comparing the optimization analysis result with the preset target to determine the verification result of the optimization model.

[0082] For example, when viewing the results of topology optimization in HyperView, the objective function converges after multiple (e.g., 39) iterations. Mesh cells of different densities are displayed in different colors on the initial model. Low-density mesh cells are displayed in blue, indicating that the mesh cell area can be removed. The red mesh cell area represents the main force transmission path and needs to be retained. Under the premise of considering the manufacturing process and cost, 49% of the material is retained as the optimization model.

[0083] Exemplarily, determining the verification result of the optimization model includes: re-performing the three-dimensional design based on the optimization model, and then verifying the simulation result thereof.

[0084] Exemplarily, the constraints and loads of the optimized model are consistent with the initial model, and then submitted to the optistruct solver for calculation. The optimization analysis results are shown in Table 2.

[0085] Table 2 Optimization analysis results of the optimization model

[0086]

[0087] According to the optimization analysis results in Table 2, the maximum deformation of the bracket after the optimization model is 0.290mm, which does not exceed the design constraint (-0.29mm~0.29mm), indicating that the bracket meets the stiffness design requirements. The stress values ​​are all less than 248MPa, meeting the strength constraint requirements. The weight of the bracket is reduced from 25.80kg to 12.73kg, a weight reduction of 50.66%, with a significant weight reduction effect, achieving the purpose of lightweight design, and helping to reduce material costs and assembly costs.

[0088] It should also be noted that, on the basis of satisfying the rigidity and strength, the topological optimization analysis of the bracket has achieved the goal of lightweight design, shortened the product development cycle, and reduced the design cost of the enterprise. It can be applied to the optimization design of other brackets to achieve the goal of lightweight design.

[0089] In an exemplary embodiment, the process of assigning material information to the mesh model, applying constraints and loads to the mesh model according to product information, establishing an initial model, and generating initial analysis results includes at least steps S310 to S330.

[0090] Step S310: Based on the material information, a target material with a density value between (0, 1) is introduced.

[0091] Exemplarily, the Optistruct solver is called to perform calculations, and the solver itself uses a variable density method to perform optimization calculations. The variable density method artificially introduces a hypothetical material with a density value between (0, 1).

[0092] Step S320, establishing a mapping relationship between the target material modulus and the material density, and using each grid unit of the grid division as a design variable.

[0093] For example, assuming that there is a certain correspondence between the elastic modulus of the material and the density of the material, the density of each unit is used as a design variable during optimization.

[0094] Step S330: introducing a penalty factor to the intermediate density value so that the intermediate density value is concentrated toward 0 and 1.

[0095] For example, to avoid the appearance of intermediate density, the intermediate density values ​​are clustered at 0 and 1, and a penalty factor is introduced to penalize the intermediate density values ​​to ensure that the topology optimization model of continuous variables can well approximate the optimization model of 0-1 discrete variables. At this time, the influence of the intermediate density unit on the structural stiffness matrix will be minimal, so these units can be discarded to achieve the purpose of lightweight design. Its mathematical model is as follows:

[0096] find:X={x1,x2……x n}

[0097] min:

[0098] st:

[0099]

[0100] in,

[0101] x i is the relative density of the i-th grid element in the design space, i = {1, 2, ..., n}; F is the node load vector; K is the stiffness matrix of the structure; U is the node displacement vector; V e is the total volume of the remaining material after optimization; V0 is the total volume of the initial design area; φ is the volume ratio of the remaining material in the design space; K′ x is the stiffness in the X direction at the loading point after optimization; K x To optimize the stiffness in the X direction at the front loading point; K′ y is the stiffness in the Y direction at the loading point after optimization; K y K′ is the stiffness in the Y direction at the front loading point of the optimization; z is the stiffness in the Z direction at the loading point after optimization; K z To optimize the stiffness in the Z direction at the front loading point; E i is the elastic modulus of the i-th grid unit; E0 is the elastic modulus of the structural material; E min is the elastic modulus value of the grid unit where the non-essential characteristic material is located; p is the penalty factor.

[0102] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0103] Figure 2 It is a block diagram of a topological optimization device for lightweight valve bracket shown in an exemplary embodiment of the present application.

[0104] like Figure 2 As shown, the exemplary valve bracket lightweight topology optimization device includes:

[0105] An information determination module, used to determine product information, improvement requirement information and material information of the valve bracket, wherein the product information at least includes constraint position, constraint degree of freedom, load size and load application position, and the improvement requirement information at least includes necessary features and non-essential features;

[0106] A simplified model generation module is used to remove unnecessary features from the valve bracket model according to the improvement requirement information to form a simplified model;

[0107] A mesh model generation module is used to mesh the simplified model to form a mesh model;

[0108] The initial model generation module is used to assign material information to the mesh model, impose constraints and loads on the mesh model according to product information, establish the initial model, and generate initial analysis results.

[0109] It should be noted that the valve bracket lightweight topology optimization device provided in the above embodiment and the valve bracket lightweight topology optimization method provided in the above embodiment belong to the same concept, wherein the specific manner in which each module and unit performs the operation has been described in detail in the method embodiment and will not be repeated here. In actual application, the valve bracket lightweight topology optimization device provided in the above embodiment can distribute the above functions to different functional modules as needed, that is, divide the internal structure of the device into different functional modules to complete all or part of the functions described above, and this is not limited here.

[0110] Specifically, this solution aims to solve the problems of traditional structural design, which rely on designer experience, have high design redundancy, waste of materials and difficult cost control, by introducing finite element analysis (FEA) and topology optimization technology. Specific solutions include:

[0111] 1. Finite element analysis: Use finite element analysis technology to perform detailed stress and performance analysis on the original structure of the bracket. Then, given the optimization constraints and objective functions, the variable density method of topology optimization is used to find continuous structures in the continuous design space. The path that is left is the most suitable structural design for the part under the created working conditions. Based on this solution, it is possible to decide whether to keep or remove materials, guide product design, optimize structural design, and reduce material usage and design redundancy while meeting performance requirements.

[0112] 2. Accurately control material distribution: Topology optimization technology accurately controls the distribution of materials in the structure by imposing stress constraints on the model and controlling the maximum stress of the optimized model. It optimizes the use of materials according to the stress and working conditions of different parts, ensures that the workpiece can still work normally under extreme working conditions, and meets the target volume control while managing the performance indicators of the model.

[0113] 3. Control process design: Through topology optimization technology, process constraints can be imposed on the model. In this solution, the existing model is a two-plane symmetrical constraint design, so two-plane symmetrical constraints are adopted, and bidirectional draft constraints are imposed at the same time. After applying process constraints, the optimization results of the model will be more manufacturable, that is, only a small amount of modification is required to convert the optimized model into an actual product, so that the model can meet the requirements of the current mainstream processing technology, greatly reducing the cost of workpiece process design, thereby effectively promoting the research and development progress of the product. An embodiment of the present application also provides an electronic device, including: one or more processors; a storage device for storing one or more programs, when one or more programs are executed by one or more processors, the electronic device implements the topology optimization method for lightweight valve bracket provided in the above-mentioned embodiments.

[0114] Another aspect of the present application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor of a computer, causes the computer to execute the foregoing topological optimization method for lightweighting a valve bracket. The computer-readable storage medium may be included in the electronic device described in the above embodiment, or may exist independently without being assembled into the electronic device.

[0115] Another aspect of the present application also provides a computer program product or a computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the topology optimization method for lightweighting a valve bracket provided in each of the above embodiments.

[0116] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A topological optimization method for lightweight valve bracket, characterized in that: include: Determine product information, improvement requirement information and material information of the valve bracket, wherein the product information includes at least constraint position, constraint degree of freedom, load size and load application position, and the improvement requirement information includes at least necessary features and non-essential features; According to the improvement requirement information, unnecessary features are removed from the valve bracket model to form a simplified model; Performing mesh division on the simplified model to form a mesh model; The mesh model is given material information, and constraints and loads are applied to the mesh model according to the product information to establish an initial model and generate initial analysis results.

2. The topological optimization method for lightweight valve bracket according to claim 1 is characterized in that: After generating the initial analysis results, the method further includes: Obtain material retention information and initial model to generate an optimized model; Applying the constraints and the loads to the optimization model to generate optimization analysis results; The optimization analysis results are compared with preset targets to determine the verification results of the optimization model.

3. The topological optimization method for lightweight valve bracket according to claim 2 is characterized in that: Obtain material retention information and initial model to generate an optimized model, including: Distinguishing a design space and a non-design space on the initial model, wherein the structure in the non-design space is fixed; Optimization model creation is performed within the design space.

4. The topological optimization method for lightweight valve bracket according to claim 3 is characterized in that: Assigning material information to the mesh model, applying constraints and loads to the mesh model according to the product information, establishing an initial model, and generating initial analysis results, including: Based on the material information, a target material with a density value between (0, 1) is introduced; A mapping relationship is established between the target material modulus and the material density, and each mesh unit of the mesh is used as a design variable; A penalty factor is introduced for the intermediate density values ​​so that the intermediate density values ​​are concentrated towards 0 and 1.

5. The topological optimization method for lightweighting a valve bracket according to claim 4, characterized in that: The calculation formula for the initial analysis results includes: find:X={x1,x2……x n } in, x i is the relative density of each grid unit in the design space, i = {1, 2, ..., n}; F is the node load vector; K is the stiffness matrix of the structure; U is the node displacement vector; V e is the total volume of the remaining material after optimization; V0 is the total volume of the initial design area; φ is the volume ratio of the remaining material in the design space; K′ x is the stiffness in the X direction at the loading point after optimization; K x To optimize the stiffness in the X direction at the front loading point; K′ y is the stiffness in the Y direction at the loading point after optimization; K y K′ is the stiffness in the Y direction at the front loading point of the optimization; z is the stiffness in the Z direction at the loading point after optimization; K z To optimize the stiffness in the Z direction at the front loading point; E i is the elastic modulus of the i-th grid unit; E0 is the elastic modulus of the structural material; E min is the elastic modulus value of the grid unit where the non-essential characteristic material is located; p is the penalty factor.

6. The topological optimization method for lightweight valve bracket according to claim 1, characterized in that: After meshing the simplified model, the method further includes: Mesh quality check ensures that the mesh’s aspect ratio, tetrahedron collapse ratio, and distortion meet preset quality standards.

7. The topological optimization method for lightweight valve bracket according to claim 1, characterized in that: Applying constraints and loads on the mesh model according to the product information includes: Couple the bolt hole to the center position of the upper end surface of the valve bracket; Apply forces in various directions at the bolt hole coupling point; The translational freedom of all nodes on the contact surface between the valve bracket and the valve body is constrained in all directions, so that the bracket cannot move or rotate in all directions.

8. A topological optimization device for lightweight valve bracket, characterized in that: include: An information determination module, used to determine product information, improvement requirement information and material information of the valve bracket, wherein the product information at least includes constraint position, constraint degree of freedom, load size and load application position, and the improvement requirement information at least includes necessary features and non-essential features; A simplified model generation module is used to remove unnecessary features from the valve bracket model according to the improvement requirement information to form a simplified model; A mesh model generation module, used for meshing the simplified model to form a mesh model; The initial model generation module is used to give the mesh model material information, and to impose constraints and loads on the mesh model according to the product information, to establish an initial model, and to generate initial analysis results.

9. A device, characterized in that: include: one or more processors and memory, A computer program is stored in the memory, and when the one or more processors execute the computer program, the device is caused to perform the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: A computer program is stored thereon, which, when executed by one or more processors, causes the device to perform the method according to any one of claims 1 to 7.

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