Fan mixed tower drum parametric modeling method and device

Abstract

The invention discloses a fan mixed tower drum parametric modeling method and device. The method comprises the steps that an information database forming a fan mixed tower drum structure is established; performing parameter verification on the tower section size and the tower section inter-section parameters in the information database, marking the tower sections which do not pass the verification, and checking and modifying the parameter information of the marked tower sections in the information database; and relevant information in the information database is called, and a fan mixed tower drum model is constructed and formed. According to the fan mixed tower drum parameterized modeling method disclosed by the invention, parameterized information in the information database can be fully utilized to quickly and accurately realize automatic fan mixed tower drum parameterized modeling, the modeling process does not need to depend on manual operation, a large number of repeated designs are avoided, and the modeling efficiency is improved. And the tower section size and the tower section inter-section parameters in the information database are subjected to parameter verification, and the fan mixed tower drum model is constructed after the verification is passed, so that the modeling efficiency and accuracy are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of wind turbine mixed-tower modeling technology, specifically to a parametric modeling method and apparatus for wind turbine mixed-tower models. Background Technology

[0002] With the rapid development of wind power generation technology and the increasing exploitation of wind energy resources, large-scale wind turbine generators are gradually becoming a development trend, and steel-concrete composite tower structures have become the mainstream high-tower structure form. As one of the core structures of a wind turbine generator, the reliability and stability of the tower structure are crucial for the safe operation of the wind turbine. Modeling and analyzing the tower structure using finite element method (FEM) software can provide a theoretical basis for tower structure design and offer reference for designers.

[0003] In existing technologies, when modeling and analyzing tower structures using finite element method (FEM) software, the tower model is typically created manually. Designers manually model each component sequentially according to its structural composition, requiring operations such as defining cross-sectional parameters, meshing, and setting boundary conditions for each component. However, because the lower part of a reinforced concrete tower is made of reinforced concrete, the number of tower sections increases with the tower height. This necessitates repeatedly performing numerous operations such as defining cross-sectional parameters, meshing, and setting boundary conditions during manual modeling. This is not only time-consuming and labor-intensive but also prone to assigning incorrect parameters to tower sections, directly affecting the accuracy of subsequent structural analysis and wasting computational resources. Furthermore, when parameter adjustments are needed, remodeling is required, resulting in significant rework. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a parametric modeling method and device for wind turbine mixed towers that is simple to implement, highly intelligent, and can improve modeling efficiency and accuracy.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A parametric modeling method for hybrid wind turbine towers includes the following steps: Step S01, Parametric Modeling: The loads and boundary conditions required during the construction of the wind turbine hybrid tower are parameterized to form load parameter information. The geometric dimensions of each structural component of the wind turbine hybrid tower are parameterized to form geometric parameter information of each structural component. The cross-sectional material properties of each structural component that need to be assigned during the modeling of the wind turbine hybrid tower are parameterized to form material parameter information. An information database for the wind turbine hybrid tower structure is established. Each structural component includes a reinforced concrete tower section, a steel tower section, epoxy resin structural adhesive, prestressed tendons, prestressed tendon binding rings, and a base. The epoxy resin structural adhesive is located between adjacent reinforced concrete tower sections. The reinforced concrete tower section includes a concrete tower section and internal reinforcing bars. Step S02: Perform parameter verification on the tower section size and inter-section parameters in the information database. If the verification passes, proceed to step S03; otherwise, mark the tower section that fails the verification, check and modify the parameter information of the marked tower section in the information database, and then execute step S02 again. Step S03: Call the geometric parameter information of each structural component in the information database to create each structural component of the wind turbine hybrid tower. Each structural component is configured according to the structural form of the wind turbine hybrid tower. Call the cross-sectional material properties in the information database to assign corresponding material properties to the cross-section of each structural component. Call the load parameter information in the information database to apply loads and boundary conditions to construct the wind turbine hybrid tower model.

[0006] Optionally, step S03 includes: Step S301: The material parameter information in the information database is called to create concrete material, steel cylinder material, outer longitudinal steel bar material, inner longitudinal steel bar material, circumferential steel bar material and prestressed steel bar material respectively. The prestressed steel bar material is bound to the ring material and the base material. Step S302: The geometric parameter information in the information database is called to generate concrete tower section components, steel tower section components, epoxy resin structural adhesive components, outer longitudinal steel bar components, inner longitudinal steel bar components, circumferential steel bar components, prestressed steel bar components, prestressed steel bar binding ring components and base components respectively; Step S303: Based on the properties of the material created in step S301, define the cross-sectional properties of the corresponding components and set the corresponding mesh size for each component to complete the mesh generation; Step S304: Instantiate the components and assemble each component one by one according to the structural form of the wind turbine tower. The concrete tower section component, together with the corresponding outer longitudinal steel bar component, inner longitudinal steel bar component, and circumferential steel bar component, constitutes a reinforced concrete tower section. Each reinforced concrete tower section constitutes a reinforced concrete tower. Each steel tower section constitutes a steel tower. The bottom of the reinforced concrete tower section is located at the top of the base component. The bottom of the steel tower is located at the top of the reinforced concrete tower. The prestressed tendon ring component is located on the steel tower. The two ends of the prestressed tendon component are located on the base component and the corresponding prestressed tendon ring, respectively. The epoxy resin structural adhesive component is located between two adjacent reinforced concrete tower sections. Step S305: Define the interactions between the assembled components; Step S306: Create an analysis step and call the load parameter information in the information database to apply loads and boundary conditions to the wind turbine hybrid tower, thereby constructing a wind turbine hybrid tower model.

[0007] Optionally, in step S303, defining the cross-sectional properties of the corresponding components includes: assigning the properties of each material to the cross-sectional properties of the corresponding components; defining the cross-sectional types of the concrete tower section component, the epoxy resin structural adhesive component, the prestressed tendon binding ring component, and the base cross-sectional component as solid and homogeneous; and defining the cross-sectional types of the outer longitudinal steel bar component, the inner longitudinal steel bar component, the circumferential steel bar component, and the prestressed tendon component as truss.

[0008] Optionally, in step S305, defining the interactions between assembled components includes: establishing interactions between the epoxy resin structural adhesive component and the adjacent reinforced concrete tower section using a Tie function; establishing interactions between the bottom reinforced concrete tower section and the base component using a Tie function; establishing interactions between the bottom steel tower section component and the prestressed tendon binding ring component using a Tie function; establishing interactions between the lower end of the prestressed tendon component and the base component using a Tie function; establishing interactions between the upper end of the prestressed tendon component and the prestressed tendon binding ring component using a Tie function; establishing interactions between the concrete tower section component and its corresponding outer longitudinal reinforcement component, inner longitudinal reinforcement component, and circumferential reinforcement component using an Embeddedregion function; defining motion coupling constraints on the top surface of the top steel tower section component, and creating a control point at the center of the top surface for applying loads.

[0009] Optionally, the load parameter information in the information database includes the load name, direction and magnitude, location of action, and distribution type of moment. When applying a load to the wind turbine tower, the gravity load is applied to all units with mass, and the concentrated bending moment at the top of the tower, the horizontal concentrated force at the top of the tower, and the mass inertia at the top of the tower are applied to the control point.

[0010] Optionally, in step S02, The parameter verification of the tower section dimensions in the information database includes: verifying whether the lower diameter of each tower section is greater than the upper diameter, verifying whether the wall thickness of each tower section is within the preset allowable wall thickness range, verifying whether the diameter-to-thickness ratio of each tower section meets the preset diameter-to-thickness ratio verification limit, and verifying whether the height and taper of each tower section meet one or more of the preset height verification limit and taper verification limit, respectively. If any verification item fails, the tower section dimension verification fails and the tower section that fails the tower section dimension verification is marked. The parameter verification of the inter-section parameters in the information database includes: verifying whether the outer diameter of the upper end of the lower tower section is equal to the outer diameter of the lower end of the upper tower section in two adjacent tower sections; verifying whether the wall thickness difference and misalignment of the two adjacent tower sections meet the preset wall thickness difference verification limit and misalignment verification limit, respectively; and verifying whether the effective contact area of ​​the two adjacent tower sections meets one or more of the preset verification contact area limit. If any verification item fails, the parameter verification of the inter-section parameters of the tower section fails, and the two adjacent tower sections that fail the parameter verification of the inter-section parameters of the tower section are marked.

[0011] Optionally, after step S03, the method further includes: when a structural adhesive component defect arrangement request or control instruction is received, searching for all epoxy resin structural adhesives in the established wind turbine hybrid tower model, and applying a specified type of defect to each epoxy resin structural adhesive to generate a wind turbine hybrid tower model with defects; the defects applied to the epoxy resin structural adhesive components include one or more of radial depth missing defects, circumferential truncation missing defects, and random area missing defects, wherein the radial depth missing defect is an annular missing defect applied to the outermost ring of the target epoxy resin structural adhesive component; the circumferential truncation missing defect is a fan-shaped area missing defect applied to the target epoxy resin structural adhesive component, wherein the center of the fan-shaped area coincides with the center of the target epoxy resin structural adhesive component; and the random area missing defect is a circular missing defect applied to a random area of ​​the target epoxy resin structural adhesive component.

[0012] Alternatively, the steps for applying defects to epoxy resin structural adhesive components are as follows: Determine the target epoxy resin structural adhesive component and its missing proportion, wherein the missing proportion is the ratio of the missing area to the cross-sectional area of ​​the target epoxy resin structural adhesive component, and calculate the cross-sectional area of ​​the target epoxy resin structural adhesive component by calling the geometric parameter information of the current target structural adhesive component. If the radial depth missing defect needs to be applied, calculate the depth of the corresponding outer ring missing area of ​​the epoxy resin structural adhesive component according to the missing ratio, divide the missing area, set the structural adhesive mesh unit in the missing area as the defect, and generate the corresponding set. If the circumferential truncation defect needs to be applied, the defect direction is set, the fan-shaped area of ​​the structural adhesive that is truncated along the defect direction is calculated according to the defect ratio, the defect area is divided, the structural adhesive mesh unit in the defect area is set as the defect, and the corresponding set is generated. If it is necessary to apply random area missing defects, set the number of missing areas, calculate the total missing area according to the missing ratio, first generate random area distribution angles according to the number of areas, then generate the coordinates of the area center and the area of ​​the area along the distribution angle, the sum of the area areas equals the total missing area and set the area difference ratio, set the structural glue mesh unit in each missing area as a defect, and generate the corresponding set.

[0013] Optionally, step S03 may be followed by an automatic material replacement step, including: When a material replacement request or control instruction is received, obtain the name of the target component whose material properties need to be modified and the corresponding replacement material properties; Replace the material properties of the target components in the original wind turbine hybrid tower model with the replacement material properties in the material replacement list to generate the updated wind turbine hybrid tower model.

[0014] In addition, the present invention also provides a parametric modeling device for wind turbine mixed towers, including a microprocessor and a memory connected to each other, wherein the microprocessor is programmed or configured to execute the parametric modeling method for wind turbine mixed towers.

[0015] Compared with the prior art, the present invention has the following main advantages: 1. The parametric modeling method for wind turbine hybrid towers disclosed in this invention parametrically processes the loads and boundary conditions required during the construction of the wind turbine hybrid tower, the geometric dimension information required for each structural component during model creation, and the cross-sectional material properties to be assigned to each structural component. This establishes an information database containing load parameter information, material parameter information for each structural component, and geometric parameter information for each structural component. During the modeling process, the relevant information in this database is called to model each structural component, set cross-sectional material properties, and apply loads and boundary conditions. This fully utilizes the parametric information in the database to quickly and accurately achieve automatic parametric modeling of wind turbine hybrid towers. The modeling process does not rely on manual operation, avoiding a large amount of repetitive design and greatly improving the efficiency and accuracy of modeling.

[0016] 2. Furthermore, this invention verifies the tower section dimensions and inter-section parameters in the information database before constructing the wind turbine hybrid tower model. This ensures the accuracy of the tower section dimensions in the information database, further improving the accuracy of the modeling and helping to avoid wasting computing resources. Attached Figure Description

[0017] Figure 1 This is a flowchart illustrating the parametric modeling method for wind turbine hybrid towers according to an embodiment of the present invention. Figure 2 This is a flowchart of step S3 of the parametric modeling method for wind turbine hybrid tower in an embodiment of the present invention. Detailed Implementation

[0018] The technical solution of the present invention will now be described in further detail with reference to the accompanying drawings.

[0019] like Figure 1 As shown, the parametric modeling method for wind turbine hybrid towers in this embodiment includes the following steps: Step S01, Parametric Modeling: The loads and boundary conditions required during the construction of the wind turbine hybrid tower are parametrically generated to form load parameter information. The geometric dimensions of each structural component of the wind turbine hybrid tower are parametrically generated to form geometric parameter information of each structural component. The cross-sectional material properties of each structural component that need to be assigned during the modeling of the wind turbine hybrid tower are parametrically generated to form material parameter information. An information database for the wind turbine hybrid tower structure is established. Each structural component includes a reinforced concrete tower section, a steel tower section, epoxy resin structural adhesive, prestressed tendons, prestressed tendon binding rings, and a base. The epoxy resin structural adhesive is located between adjacent reinforced concrete tower sections. The reinforced concrete tower section includes a concrete tower section and internal reinforcing bars. Step S02: Perform parameter verification on the tower section size and inter-section parameters in the information database. If the verification passes, proceed to step S03; otherwise, mark the tower section that fails the verification, check and modify the parameter information of the marked tower section in the information database, and then execute step S02 again. Step S03: Call the geometric parameter information of each structure in the information database to create each structural component of the wind turbine hybrid tower. Each structural component is configured according to the structural form of the wind turbine hybrid tower. Call the cross-sectional material properties in the information database to assign corresponding material properties to the cross-section of each structural component. Call the load parameter information in the information database to apply loads and boundary conditions to construct the wind turbine hybrid tower model.

[0020] The parametric modeling method for wind turbine hybrid towers described in this embodiment parametrically processes the loads and boundary conditions required during the construction of the wind turbine hybrid tower, the geometric dimensions of each structural component required during model creation, and the cross-sectional material properties to be assigned to each structural component. This establishes an information database containing load parameters, material parameters of each structural component, and geometric parameters. During the modeling process, the relevant information in this database is called to model each structural component, set cross-sectional material properties, and apply loads and boundary conditions. This fully utilizes the parametric information in the database to quickly and accurately achieve automatic parametric modeling of wind turbine hybrid towers. The modeling process does not rely on manual operation, avoiding a large amount of repetitive design and greatly improving modeling efficiency and accuracy. Furthermore, by verifying the tower section dimensions and inter-section parameters in the information database before constructing the wind turbine hybrid tower model, the accuracy of the tower section dimensions in the database is ensured, further improving modeling accuracy and helping to avoid wasting computational resources. Specifically, in this embodiment, modeling can be performed using a combination of Abaqus and Python. A modeling script file, written in Python, is used that Abaqus can recognize and run, and that possesses the functionality of the aforementioned parametric modeling method for wind turbine hybrid towers. This modeling script file is capable of executing steps S01-S03 to construct a wind turbine hybrid tower model. Then, by running the modeling script in Abaqus, the corresponding wind turbine hybrid tower model can be automatically built. For example, in Abaqus, the working directory is set to the path of the modeling script file. Clicking "Run Script" in the Abaqus tab, selecting and confirming the .py main program file, and waiting for Abaqus to complete the program execution will yield the complete hybrid tower model. This method avoids extensive manual interaction on the Abaqus visual interface.

[0021] In this embodiment, the parameterized dimensional information of the reinforced concrete tower section components in the information database includes: the bottom outer diameter, top outer diameter, wall thickness, height, diameter of circumferential reinforcement, number of circumferential reinforcements, diameter of longitudinal reinforcement, number of longitudinal reinforcements, thickness of concrete cover at the top and bottom, and thickness of concrete cover at the vertical end; the parameterized dimensional information of the steel tower section components includes: the bottom outer diameter, top outer diameter, wall thickness, and height; the parameterized dimensional information of the stress tendon components includes: total length of prestressing tendons, cross-sectional area of ​​prestressing tendons, and radius of prestressing tendon arrangement; the parameterized dimensional information of the prestressing tendon binding ring (simulating anchorage) includes: inner diameter, width, and thickness; the parameterized dimensional information of the epoxy resin structural adhesive includes: outer diameter, inner diameter, and thickness; and the parameterized dimensional information of the base includes: base cross-sectional radius and base cross-sectional height.

[0022] As an optional implementation, the load parameter information in the information database includes the load name, direction and magnitude, location of action and distribution type of moment. When applying loads to the wind turbine tower, gravity loads are applied to all elements with mass, and concentrated bending moment at the top of the tower, horizontal concentrated force at the top of the tower and mass inertia at the top of the tower are applied to the control point.

[0023] It is understandable that the specific type of the above parameterized information can also be configured according to actual needs.

[0024] Preferably, the geometric parameter information of each structural component can be stored in the Python program as a list. The list stores the control parameters of the corresponding component, along with their names and comments, for easy retrieval. Taking a concrete tower section component as an example, the parameters can be stored in the following manner: Concrete_Tower_Paras = [ # Tower section geometric parameters: lower outer diameter, upper outer diameter, tower section height, lower wall thickness, upper wall thickness [9500.0, 9350.0, 3080.0, 260.0, 260.0], [9350.0, 9200.0, 3080.0, 260.0, 260.0], [9200.0, 9050.0, 3080.0, 260.0, 260.0], [9050.0, 8900.0, 3080.0, 270.0, 270.0], ... # Other Data ] As an optional implementation, in step S02, the parameter verification of the tower section dimensions in the information database includes: verifying whether the lower diameter of each tower section is greater than the upper diameter, verifying whether the wall thickness of each tower section is within the preset allowable wall thickness range, verifying whether the diameter-to-thickness ratio of each tower section meets the preset diameter-to-thickness ratio verification limit, and verifying whether the height and taper of each tower section meet one or more of the preset height verification limit and taper verification limit, respectively. If any verification item fails, the tower section dimension verification fails, and the tower section that fails the tower section dimension verification is marked.

[0025] The parameter verification of the tower section parameters in the information database includes: verifying whether the outer diameter of the upper end of the lower tower section is equal to the outer diameter of the lower end of the upper tower section in two adjacent tower sections; verifying whether the wall thickness difference and misalignment of two adjacent tower sections meet the preset wall thickness difference verification limit and misalignment verification limit respectively; and verifying whether the effective contact area of ​​two adjacent tower sections meets one or more of the preset verification contact area limit. If any verification item fails, the parameter verification of the tower section parameters fails, and the two adjacent tower sections that fail the parameter verification of the tower section parameters are marked.

[0026] Furthermore, tower sections that fail the tower section size parameter verification and adjacent tower sections that fail the inter-section parameter verification will be marked, which facilitates quick location of tower sections with abnormal data and helps to quickly check and correct the size parameters of tower sections with abnormal data in the information database.

[0027] like Figure 2 As shown, in one optional implementation, step S03 includes the following specific steps: Step S301: Call the material parameter information in the information database to create concrete material, steel cylinder material, outer longitudinal steel bar material, inner longitudinal steel bar material, circumferential steel bar material and prestressed steel bar material respectively. The prestressed steel bar material is bound to the ring material and the base material. Step S302: Retrieve the geometric parameter information from the information database to generate concrete tower section components, steel tower section components, epoxy resin structural adhesive components, outer longitudinal reinforcement components, inner longitudinal reinforcement components, circumferential reinforcement components, prestressed reinforcement components, prestressed reinforcement binding ring components, and base components respectively. Step S303: Based on the properties of the material created in step S301, define the cross-sectional properties of the corresponding components and set the corresponding mesh size for each component to complete the mesh generation; Step S304: Instantiate the components and assemble each component one by one according to the structural form of the wind turbine tower. The concrete tower section component, together with the corresponding outer longitudinal steel bar component, inner longitudinal steel bar component, and circumferential steel bar component, constitutes a reinforced concrete tower section. Each reinforced concrete tower section constitutes a reinforced concrete tower. Each steel tower section constitutes a steel tower. The bottom of the reinforced concrete tower section is located at the top of the base component. The bottom of the steel tower is located at the top of the reinforced concrete tower. The prestressed tendon ring component is located on the steel tower. The two ends of the prestressed tendon component are located on the base component and the corresponding prestressed tendon ring, respectively. The epoxy resin structural adhesive component is located between two adjacent reinforced concrete tower sections. Step S305: Define the interactions between the assembled components; Step S306: Create an analysis step and call the load parameter information in the information database to apply loads and boundary conditions to the wind turbine hybrid tower, thereby constructing a wind turbine hybrid tower model.

[0028] In step S301 above, the corresponding materials can be generated by calling the established material properties in the main program of the modeling script. For example, various material types can be set, such as elastic concrete material, steel bar material, prestressed tendon material, base material, elasto-plastic steel cylinder material, and rigid prestressed tendon binding ring material.

[0029] Specifically, in this embodiment, to facilitate the input of cross-sectional attribute parameters during parametric modeling and to increase the readability of the main program, some classes suitable for setting cross-sectional materials in the modeling of wind turbine hybrid towers can be defined for easy creation by the main program. These classes may include, for example, the following: (1) Elastic model material property class, the parameterized information includes: density, elastic modulus and Poisson's ratio, etc.; (2) Plastic model material properties, parameterized information includes: density, elastic modulus, Poisson's ratio, yield stress and plastic strain, etc. (3) Brittle cracking model material property class, the parameterized information includes: density, elastic modulus, Poisson's ratio, direct stress after cracking, direct cracking strain, shear retention factor and crack opening strain, etc. (4) Material properties of concrete plastic damage model, the parameterized information includes: density, elastic modulus, Poisson's ratio, expansion angle, eccentricity, fb0 / fc0, tensile stress and strain, compressive stress and strain, etc. The following program example demonstrates how to create a new C80 material property by calling the material parameter class: Conc_1 = elastic_model(my_model, 'C80', elastic=38e9, poisson_ratio=0.2, density=2500) #Note: # Conc_1 stores the variables for this material model; elastic_model is the elastic material model class constructed; my_model is the Abaqus model object; #name is the name of the newly created material attribute; elastic, poisson_ratio, density are the elastic modulus, Poisson's ratio, and density, which are modified when they differ from the default material parameters. As an optional implementation, in step S303, defining the cross-sectional properties of the corresponding components includes: assigning the properties of each material to the cross-sectional properties of the corresponding components; defining the cross-sectional types of the concrete tower section component, the epoxy resin structural adhesive component, the prestressed tendon binding ring component, and the base cross-sectional component as solid and homogeneous; and defining the cross-sectional types of the outer longitudinal steel bar component, the inner longitudinal steel bar component, the circumferential steel bar component, and the prestressed tendon component as truss.

[0030] As an optional implementation, in step S305, defining the interactions between the assembled components includes: establishing interactions between the epoxy resin structural adhesive component and the adjacent reinforced concrete tower section using a Tie function; establishing interactions between the bottom reinforced concrete tower section and the base component using a Tie function; establishing interactions between the bottom steel tower section component and the prestressed tendon binding ring component using a Tie function; establishing interactions between the lower end point of the prestressed tendon component and the base component using a Tie function; establishing interactions between the upper end point of the prestressed tendon component and the prestressed tendon binding ring component using a Tie function; establishing interactions between the concrete tower section component and its corresponding outer longitudinal reinforcement component, inner longitudinal reinforcement component, and circumferential reinforcement component using an Embeddedregion function; defining motion coupling constraints on the top surface of the top steel tower section component, and creating a control point at the center of the top surface for applying loads.

[0031] As an optional implementation, functions for various components and utility functions for implementing operations can be created in the modeling script file. These utility functions include functions that assign cross-sectional attributes to solids and homogeneous components, used to assign cross-sectional attributes when creating tower section components, base components, and prestressed steel reinforcement binding rings; and functions that calculate displacement vectors during instance translation, primarily used to determine the positions of various components during assembly. Of course, in other embodiments, other modeling software or modeling scripts written in other programming languages ​​that can be recognized and run by modeling software can also be used for modeling.

[0032] In the tower section assembly process, epoxy resin structural adhesive is the key adhesive for tower section assembly. Defect-free epoxy resin structural adhesive has little impact on the mechanical properties of the mixed tower structure. However, manufacturing defects in actual engineering can cause significant stress concentration effects. Existing simulation models generally adopt the ideal bonding assumption, that is, no epoxy resin is placed between adjacent concrete tower sections during the modeling process, or defect-free epoxy resin is placed. This makes it impossible to model the situation of epoxy resin structural adhesive under defective conditions, which in turn affects the accuracy of the tower structure analysis.

[0033] See Figure 1 In this embodiment, after step S03, the method further includes: when a request or control instruction for the arrangement of defects in structural adhesive components is received, all epoxy resin structural adhesive components are searched in the established wind turbine hybrid tower model, and a specified type of defect is applied to each epoxy resin structural adhesive component to generate a wind turbine hybrid tower model with defects, wherein the epoxy resin structural adhesive components are located between adjacent reinforced concrete tower sections.

[0034] This embodiment generates a wind turbine mixed tower model with defects by running a defect application script file after establishing the corresponding wind turbine mixed tower model. During the generation of the wind turbine mixed tower model with defects, Abaqus does not need to run the modeling script file again. It can fully consider the defect conditions of epoxy resin structural adhesive and generate a wind turbine mixed tower model with defects. In this way, it can quickly and accurately realize the analysis of the tower structure of epoxy resin structural adhesive under defect conditions.

[0035] As an optional implementation, defects are applied to the epoxy resin structural adhesive components, including radial depth missing defects, circumferential truncation missing defects, and random area missing defects. This allows for consideration of the diversity of defects in the epoxy resin structural adhesive components, which is beneficial for generating wind turbine hybrid tower models with different defects. Radial depth missing defects are defined as ring-shaped defects applied to the outermost ring of the target epoxy resin structural adhesive component. The circumferential cut-off defect is a fan-shaped area missing area applied to the target epoxy resin structural adhesive component, with the center of the fan-shaped area coinciding with the center of the target epoxy resin structural adhesive component. Random area missing defects are circular missing areas applied to random areas of the target epoxy resin structural adhesive component.

[0036] As an optional implementation, the step of applying defects to epoxy resin structural adhesive components is as follows: Determine the target epoxy resin structural adhesive component and its missing proportion, wherein the missing proportion is the ratio of the missing area to the cross-sectional area of ​​the target epoxy resin structural adhesive component, and calculate the cross-sectional area of ​​the target epoxy resin structural adhesive component by calling the geometric parameter information of the current target structural adhesive component. If the radial depth missing defect needs to be applied, calculate the depth of the corresponding outer ring missing area of ​​the epoxy resin structural adhesive component according to the missing ratio, divide the missing area, set the structural adhesive mesh unit in the missing area as the defect, and generate the corresponding set. If the circumferential truncation defect needs to be applied, the defect direction is set, the fan-shaped area of ​​the structural adhesive that is truncated along the defect direction is calculated according to the defect ratio, the defect area is divided, the structural adhesive mesh unit in the defect area is set as the defect, and the corresponding set is generated. If it is necessary to apply random area missing defects, set the number of missing areas, calculate the total missing area according to the missing ratio, first generate random area distribution angles according to the number of areas, then generate the coordinates of the area center and the area of ​​the area along the distribution angle, the sum of the area areas equals the total missing area and set the area difference ratio, set the structural glue mesh unit in each missing area as a defect, and generate the corresponding set.

[0037] This embodiment, by considering the application of defects to epoxy resin structural adhesive components based on the constructed parametric model of the wind turbine tower, can provide a computational model for the structural analysis of wind turbine hybrid towers under defect conditions. This avoids redundant modeling and can generate different wind turbine hybrid tower models with defects based on the different defects applied to the epoxy resin structural adhesive components. Consequently, the tower structure can be analyzed under different defect conditions, making the model analysis results as close as possible to the actual results.

[0038] As an optional implementation, step S03 is followed by an automatic material replacement step, including: When a material replacement request or control instruction is received, obtain the name of the target component whose material properties need to be modified and the corresponding replacement material properties; The material properties of the target component in the original wind turbine hybrid tower model are replaced with the replacement material properties from the material replacement list to generate an updated wind turbine hybrid tower model. Specifically, in this embodiment, the replacement material properties can be obtained from the existing material property list in the established wind turbine hybrid tower model, or new material properties can be created by calling the material property class. To avoid assigning replacement materials to the wrong component during the material replacement process, this embodiment sets a material property replacement list, inputting the name of the target component and the replacement material property into the material property replacement list one-to-one, and performing material replacement by calling the material property replacement list. Here, the original wind turbine hybrid tower model can be a wind turbine hybrid tower model constructed by calling the corresponding data in the database, or it can refer to a wind turbine hybrid tower model with defects.

[0039] Specifically, a script file written in Python can be used to enable Abaqus to recognize and run the aforementioned material replacement. By running this script file within Abaqus to complete the material replacement, Abaqus can update the speed of the wind turbine tower model without needing to run the modeling script file again during the generation of the updated wind turbine tower model. The model data of the new model formed after the material replacement is completed is stored in different model trees within the same CAE file, and the user can customize the model name. Alternatively, in other embodiments, other modeling software or other modeling scripts written in other programming languages ​​that can be recognized and run by modeling software can also be used for modeling.

[0040] In addition, this embodiment also provides a parametric modeling device for wind turbine mixed towers, including a microprocessor and a memory connected to each other, wherein the microprocessor is programmed or configured to execute the parametric modeling method for wind turbine mixed towers.

[0041] Those skilled in the art will understand that the technical solutions provided by the embodiments of this application may be in the form of a method, system, or computer program product. Therefore, this application may take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application may take the form of a computer program product embodied on one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create an implementation for the process. Figure 1 One or more processes and / or boxes Figure 1 The computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1The functions specified in one or more boxes. These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable apparatus for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0042] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A parametric modeling method for hybrid wind turbine towers, characterized in that, Includes the following steps: Step S01, Parametric Modeling: The loads and boundary conditions required during the construction of the wind turbine hybrid tower are parametrically generated to form load parameter information. The geometric dimensions of each structural component of the wind turbine hybrid tower are parametrically generated to form geometric parameter information of each structural component. The cross-sectional material properties of each structural component that need to be assigned during the modeling of the wind turbine hybrid tower are parametrically generated to form material parameter information. An information database for the wind turbine hybrid tower structure is established. Each structural component includes a reinforced concrete tower section, a steel tower section, epoxy resin structural adhesive, prestressed tendons, prestressed tendon binding rings, and a base. The epoxy resin structural adhesive is located between adjacent reinforced concrete tower sections. The reinforced concrete tower section includes a concrete tower section and internal reinforcing bars. Step S02: Perform parameter verification on the tower section size and inter-section parameters in the information database. If the verification passes, proceed to step S03; otherwise, mark the tower section that fails the verification, check and modify the parameter information of the marked tower section in the information database, and then execute step S02 again. Step S03: Call the geometric parameter information of each structural component in the information database to create each structural component of the wind turbine hybrid tower. Each structural component is configured according to the structural form of the wind turbine hybrid tower. Call the cross-sectional material properties in the information database to assign corresponding material properties to the cross-section of each structural component. Call the load parameter information in the information database to apply loads and boundary conditions to construct the wind turbine hybrid tower model.

2. The parametric modeling method for wind turbine hybrid towers according to claim 1, characterized in that, Step S03 includes: Step S301: Call the material parameter information in the information database to create concrete material, steel cylinder material, outer longitudinal steel bar material, inner longitudinal steel bar material, circumferential steel bar material and prestressed steel bar material respectively. The prestressed steel bar material is bound to the ring material and the base material. Step S302: The geometric parameter information in the information database is called to generate concrete tower section components, steel tower section components, epoxy resin structural adhesive components, outer longitudinal steel bar components, inner longitudinal steel bar components, circumferential steel bar components, prestressed steel bar components, prestressed steel bar binding ring components and base components respectively; Step S303: Based on the properties of the material created in step S301, define the cross-sectional properties of the corresponding components and set the corresponding mesh size for each component to complete the mesh generation; Step S304: Instantiate the components and assemble each component one by one according to the structural form of the wind turbine tower. The concrete tower section component, together with the corresponding outer longitudinal steel bar component, inner longitudinal steel bar component, and circumferential steel bar component, constitutes a reinforced concrete tower section. Each reinforced concrete tower section constitutes a reinforced concrete tower. Each steel tower section constitutes a steel tower. The bottom of the reinforced concrete tower section is located at the top of the base component. The bottom of the steel tower is located at the top of the reinforced concrete tower. The prestressed tendon ring component is located on the steel tower. The two ends of the prestressed tendon component are located on the base component and the corresponding prestressed tendon ring, respectively. The epoxy resin structural adhesive component is located between two adjacent reinforced concrete tower sections. Step S305: Define the interactions between the assembled components; Step S306: Create an analysis step and call the load parameter information in the information database to apply loads and boundary conditions to the wind turbine hybrid tower, thereby constructing a wind turbine hybrid tower model.

3. The parametric modeling method for wind turbine hybrid towers according to claim 2, characterized in that, In step S303, defining the cross-sectional properties of the corresponding components includes: assigning the properties of each material to the cross-sectional properties of the corresponding components; defining the cross-sectional types of the concrete tower section component, the epoxy resin structural adhesive component, the prestressed tendon binding ring component, and the base cross-sectional component as solid and homogeneous; and defining the cross-sectional types of the outer longitudinal steel bar component, the inner longitudinal steel bar component, the circumferential steel bar component, and the prestressed tendon component as truss.

4. The parametric modeling method for wind turbine hybrid towers according to claim 2, characterized in that, In step S305, defining the interactions between assembled components includes: establishing interactions between the epoxy resin structural adhesive component and the adjacent reinforced concrete tower section using a Tie function; establishing interactions between the bottom reinforced concrete tower section and the base component using a Tie function; establishing interactions between the bottom steel tower section component and the prestressed tendon binding ring component using a Tie function; establishing interactions between the lower end of the prestressed tendon component and the base component using a Tie function; establishing interactions between the upper end of the prestressed tendon component and the prestressed tendon binding ring component using a Tie function; establishing interactions between the concrete tower section component and its corresponding outer longitudinal reinforcement component, inner longitudinal reinforcement component, and circumferential reinforcement component using an Embeddedregion function; defining motion coupling constraints on the top surface of the top steel tower section component, and creating a control point at the center of the top surface for applying loads.

5. The parametric modeling method for wind turbine hybrid towers according to claim 4, characterized in that, The load parameter information in the information database includes the load name, direction and magnitude, location of action and distribution type of moment. When applying loads to the wind turbine tower, gravity loads are applied to all elements with mass, and concentrated bending moment at the top of the tower, horizontal concentrated force at the top of the tower and mass inertia at the top of the tower are applied to the control point.

6. The parametric modeling method for hybrid wind turbine towers according to claim 1, characterized in that, In step S02, The parameter verification of the tower section dimensions in the information database includes: verifying whether the lower diameter of each tower section is greater than the upper diameter, verifying whether the wall thickness of each tower section is within the preset allowable wall thickness range, verifying whether the diameter-to-thickness ratio of each tower section meets the preset diameter-to-thickness ratio verification limit, and verifying whether the height and taper of each tower section meet one or more of the preset height verification limit and taper verification limit, respectively. If any verification item fails, the tower section dimension verification fails and the tower section that fails the tower section dimension verification is marked. The parameter verification of the inter-section parameters in the information database includes: verifying whether the outer diameter of the upper end of the lower tower section is equal to the outer diameter of the lower end of the upper tower section in two adjacent tower sections; verifying whether the wall thickness difference and misalignment of the two adjacent tower sections meet the preset wall thickness difference verification limit and misalignment verification limit, respectively; and verifying whether the effective contact area of ​​the two adjacent tower sections meets one or more of the preset verification contact area limit. If any verification item fails, the parameter verification of the inter-section parameters of the tower section fails, and the two adjacent tower sections that fail the parameter verification of the inter-section parameters of the tower section are marked.

7. The parametric modeling method for wind turbine hybrid towers according to any one of claims 1 to 6, characterized in that, Step S03 further includes: when a structural adhesive component defect arrangement request or control instruction is received, all epoxy resin structural adhesives are searched in the established wind turbine hybrid tower model, and a specified type of defect is applied to each epoxy resin structural adhesive to generate a wind turbine hybrid tower model with defects; the defects applied to the epoxy resin structural adhesive components include one or more of radial depth missing defects, circumferential truncation missing defects, and random area missing defects. The radial depth missing defect is a ring-shaped missing defect applied to the outermost ring of the target epoxy resin structural adhesive component; the circumferential truncation missing defect is a fan-shaped area missing defect applied to the target epoxy resin structural adhesive component, the center of the fan-shaped area coinciding with the center of the target epoxy resin structural adhesive component; the random area missing defect is a circular missing defect applied to a random area of ​​the target epoxy resin structural adhesive component.

8. The parametric modeling method for wind turbine hybrid towers according to claim 7, characterized in that, The steps for applying defects to epoxy resin structural adhesive components are as follows: Determine the target epoxy resin structural adhesive component and its missing proportion, wherein the missing proportion is the ratio of the missing area to the cross-sectional area of ​​the target epoxy resin structural adhesive component, and calculate the cross-sectional area of ​​the target epoxy resin structural adhesive component by calling the geometric parameter information of the current target structural adhesive component. If the radial depth missing defect needs to be applied, calculate the depth of the corresponding outer ring missing area of ​​the epoxy resin structural adhesive component according to the missing ratio, divide the missing area, set the structural adhesive mesh unit in the missing area as the defect, and generate the corresponding set. If the circumferential truncation defect needs to be applied, the defect direction is set, the fan-shaped area of ​​the structural adhesive that is truncated along the defect direction is calculated according to the defect ratio, the defect area is divided, the structural adhesive mesh unit in the defect area is set as the defect, and the corresponding set is generated. If it is necessary to apply random area missing defects, set the number of missing areas, calculate the total missing area according to the missing ratio, first generate random area distribution angles according to the number of areas, then generate the coordinates of the area center and the area of ​​the area along the distribution angle, the sum of the area areas equals the total missing area and set the area difference ratio, set the structural glue mesh unit in each missing area as a defect, and generate the corresponding set.

9. The parametric modeling method for wind turbine hybrid towers according to any one of claims 1 to 6, characterized in that, Step S03 is followed by an automatic material replacement step, including: When a material replacement request or control instruction is received, obtain the name of the target component whose material properties need to be modified and the corresponding replacement material properties; Replace the material properties of the target components in the original wind turbine hybrid tower model with the replacement material properties in the material replacement list to generate the updated wind turbine hybrid tower model.

10. A parametric modeling device for hybrid wind turbine towers, comprising a microprocessor and a memory interconnected, characterized in that, The microprocessor is programmed or configured to execute the parametric modeling method for wind turbine hybrid towers as described in any one of claims 1 to 9.

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