Rapid modeling method and device for complex functional structural member

Abstract

The invention provides a rapid modeling method and device for a complex functional structural member. The method comprises the steps that the complex functional structural member is divided into different stress areas; for each stress area, selecting a filling function element from a multidisciplinary function element construction library based on the performance requirement, the environmental stress load type and the space geometric constraint of the stress area; for each stress area, adjusting key parameters of the filling function element based on the environmental stress requirement and the parameterized geometric performance mapping relation of the filling function element to obtain a matched function element; and filling the corresponding stress areas with the matching function elements through a rapid reconstruction algorithm, and fusing the adjacent stress areas to obtain a reconstruction model of the complex functional structural member. The invention provides a quick modeling method and device for a complex functional structural member, and aims to solve the problems that the traditional method is difficult to solve the problems of low design efficiency and poor environmental stress adaptability and is difficult to meet the requirements of large-batch, multi-variety and quick additive manufacturing change production of the structural member.

Description

Technical Field

[0001] This invention relates to the field of aerospace additive manufacturing technology, and in particular to a method and apparatus for rapid modeling of complex functional structural components. Background Technology

[0002] In the aerospace field, additive manufacturing technology is widely used in the production of complex functional load-bearing structural components because it enables the integrated manufacturing of complex structural parts. However, current traditional modeling methods for complex functional structural components struggle to address issues such as low design efficiency and poor adaptability to environmental stresses, while also failing to meet the demands of high-volume, multi-variety production and rapid changeover in additive manufacturing. Summary of the Invention

[0003] This invention provides a method and apparatus for rapid modeling of complex functional structural components, which solves the problems of low design efficiency and poor environmental stress adaptability of traditional complex functional structural component modeling methods, and also fails to meet the needs of large-scale, multi-variety, and rapid production changeover of additive manufacturing structural components.

[0004] In a first aspect, the present invention provides a method for rapid modeling of complex functional structural components, comprising:

[0005] S1. Analyze the geometric layout and performance requirements of complex functional structural components, determine their environmental stress requirements and spatial geometric constraints, and divide the complex functional structural components into different stress regions. The environmental stress requirements include the type of environmental stress load, the magnitude of environmental stress, and the path of environmental stress transmission.

[0006] S2. For each stress region, fill functional elements are selected from the multidisciplinary functional element construction library based on its performance requirements, environmental stress load type and spatial geometric constraints. The multidisciplinary functional element construction library includes multidisciplinary functional elements and their multidimensional parameters and parameterized geometric performance mapping relationships.

[0007] S3. For each stress region, the key parameters of its filling functional element are adjusted based on its environmental stress requirements and the parameterized geometric performance mapping relationship between its filling functional element and the filling functional element to obtain its matching functional element.

[0008] S4. Fill each matching functional element into its corresponding stress region using a fast reconstruction algorithm, and merge adjacent stress regions to obtain a reconstruction model of the complex functional structural component.

[0009] S5. Perform environmental stress adaptability verification and accuracy calibration on the reconstructed model. If both pass, the final model of the complex functional structural component is obtained. Otherwise, determine whether the number of reconstructions exceeds the preset threshold. If it does not exceed the threshold, execute S3-S5. If it exceeds the threshold, reconstruct the multidisciplinary functional element construction library and then execute S2-S5.

[0010] Optionally, dividing the complex functional structural component into different stress regions includes:

[0011] Based on the geometric layout, the complex functional structural component is divided into a part that requires filling with functional elements and a part that does not require filling with functional elements.

[0012] Based on the environmental stress load type and spatial geometric constraints, the portion of the functional element to be filled is divided into a high-stress zone and a low-stress zone.

[0013] Optionally, the selection of filling functional elements from a multidisciplinary functional element construction library for each stress region, based on its performance requirements, environmental stress load type, and spatial geometric constraints, includes:

[0014] Select the functional element according to the type of environmental stress load;

[0015] Incompatible functional elements are removed from the selected functional elements based on the spatial geometric constraints.

[0016] Based on the performance requirements, the functional element with the highest performance redundancy is selected from the remaining functional elements as the filling functional element.

[0017] Optionally, the construction process of the multidisciplinary functional meta-construction library includes:

[0018] We designed and summarized multidisciplinary functional elements, obtained multidimensional parameters of the multidisciplinary functional elements through numerical simulation and experimental testing methods, and established parameterized geometric performance mapping relationships of the multidisciplinary functional elements.

[0019] Optionally, the multi-dimensional parameters include geometric parameters and mechanical performance parameters.

[0020] Optionally, the parameterized geometric property mapping relationship is a mapping relationship between geometric parameters and mechanical property parameters.

[0021] Optionally, the step of filling each matching functional element into its corresponding stress region using a fast reconstruction algorithm and merging adjacent stress regions includes:

[0022] The matching functional elements are generated into a lattice in their corresponding stress regions by field-driven growth, and the volume of the lattice is larger than the volume of the corresponding stress region.

[0023] The lattice is cut into the geometry of its corresponding stress region by taking the intersection in Boolean operations;

[0024] By adjusting the overlap length of adjacent lattice points through topological connections, the fusion of adjacent stress regions can be achieved.

[0025] Secondly, the present invention provides a rapid modeling device for complex functional structural components, comprising an analysis module, a screening module, an adjustment module, a reconstruction module, and a verification module, wherein:

[0026] The analysis module is used to analyze the geometric layout and performance requirements of complex functional structural components, determine their environmental stress requirements and spatial geometric constraints, and divide the complex functional structural components into different stress regions. The environmental stress requirements include the type of environmental stress load, the magnitude of environmental stress, and the path of environmental stress transmission.

[0027] The filtering module is used to select filling functional elements from the multidisciplinary functional element construction library for each stress region based on its performance requirements, environmental stress load type and spatial geometric constraints. The multidisciplinary functional element construction library includes multidisciplinary functional elements and their multidimensional parameters and parameterized geometric performance mapping relationships.

[0028] The adjustment module is used to adjust the key parameters of the filling functional element for each stress region based on its environmental stress requirements and the parameterized geometric performance mapping relationship of its filling functional element, so as to obtain its matching functional element.

[0029] The reconstruction module is used to fill each matching functional element into its corresponding stress region through a fast reconstruction algorithm, and to merge adjacent stress regions to obtain a reconstruction model of the complex functional structural component.

[0030] The verification module is used to verify the environmental stress adaptability and calibrate the accuracy of the reconstructed model. If both pass, the final model of the complex functional structural component is obtained. Otherwise, it is determined whether the number of reconstructions exceeds a preset threshold. If it does not exceed the threshold, it jumps to the adjustment module. If it exceeds the threshold, it reconstructs the multidisciplinary functional element construction library and then jumps to the screening module.

[0031] Thirdly, the present invention provides an electronic device, characterized in that it comprises:

[0032] A processor; and a memory arranged to store computer-executable instructions, which, when executed, cause the processor to perform the steps of any of the methods described above.

[0033] Fourthly, the present invention provides a storage medium comprising:

[0034] The storage medium stores a processing program for rapid modeling of complex functional structural components. When the processing program for rapid modeling of complex functional structural components is executed by the processor, it implements the steps of any of the methods described above. Attached Figure Description

[0035] Figure 1 This is a flowchart illustrating a rapid modeling method for complex functional structural components provided in Embodiment 1 of the present invention.

[0036] Figure 2 A schematic diagram of the multidisciplinary functional element construction library provided in Embodiment 1 of the present invention;

[0037] Figure 3 This is a schematic diagram of a certain type of reflector in the aerospace field provided in Embodiment 1 of the present invention;

[0038] Figure 4 This is a schematic diagram of the cross-section of the mirror reconstruction model provided in Embodiment 1 of the present invention;

[0039] Figure 5 This is a schematic diagram of the mechanical simulation results of the mirror reconstruction model provided in Embodiment 1 of the present invention;

[0040] Figure 6 This is a schematic diagram of a rapid modeling device for complex functional structural components provided in Embodiment 2 of the present invention. Detailed Implementation

[0041] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present application will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and are not to scale, and are only used to facilitate and clarify the illustration of the embodiments of the present application.

[0042] It should be noted that, in order to clearly illustrate the content of this application, several embodiments are provided to further explain the different implementations of this application. These embodiments are enumerated rather than exhaustive. Furthermore, for the sake of brevity, content mentioned in the preceding embodiments is often omitted in the following embodiments. Therefore, content not mentioned in the following embodiments can be referred to in the preceding embodiments.

[0043] Example 1

[0044] Please refer to Figure 1 , Figure 1 The image shows a rapid modeling method for complex functional structural components provided in this embodiment, including:

[0045] S1. Analyze the geometric layout and performance requirements of complex functional structural components, determine their environmental stress requirements and spatial geometric constraints, and divide the complex functional structural components into different stress regions. The environmental stress requirements include the type of environmental stress load, the magnitude of environmental stress, and the path of environmental stress transmission.

[0046] The geometric layout refers to the dimensions, quantity, and size of structural components, which can be obtained through analysis based on 3D scanning and design drawing analysis.

[0047] Performance requirements include at least one of the following: impact resistance, static load bearing capacity, fatigue resistance, temperature resistance, and lightweight properties.

[0048] Environmental stress load types include impulse response spectrum, random vibration spectrum, and acceleration magnitude and direction.

[0049] Spatial geometric constraints are the installation methods of structural components.

[0050] In this embodiment, dividing the complex functional structural component into different stress regions includes:

[0051] Based on the geometric layout, complex functional structural components are divided into parts that require filling functional elements and parts that do not require filling functional elements.

[0052] Based on the type of environmental stress load and spatial geometric constraints, the parts that need to be filled with functional elements are divided into high-stress areas and low-stress areas.

[0053] S2. For each stress region, fill functional elements are selected from the multidisciplinary functional element construction library based on its performance requirements, environmental stress load type and spatial geometric constraints. The multidisciplinary functional element construction library includes multidisciplinary functional elements and their multidimensional parameters and parameterized geometric performance mapping relationships.

[0054] A functional unit (cell) is the smallest repeating unit in a lattice-filled structure, and it has many different forms.

[0055] Multidisciplinary functional elements include mechanical functional elements, thermal functional elements, and structural support functional elements.

[0056] In this embodiment, for each stress region, the filling functional elements selected from the multidisciplinary functional element construction library based on its performance requirements, environmental stress load type, and spatial geometric constraints include:

[0057] Select functional elements based on the type of environmental stress load;

[0058] Remove incompatible functional elements from the selected functional elements based on spatial geometric constraints;

[0059] Based on performance requirements, select the functional element with the highest performance redundancy from the remaining functional elements as the filling functional element.

[0060] Performance redundancy is the amount exceeding the performance requirement index. When the remaining functional elements can meet the performance requirements, the functional element that exceeds the performance requirement index the most is selected as the filling functional element.

[0061] In one specific implementation, the type of environmental stress load can be used as the first-level screening condition, spatial geometric constraints as the second-level screening condition, and performance redundancy as the third-level screening condition.

[0062] In this embodiment, the construction process of the multidisciplinary functional element construction library includes:

[0063] We designed and summarized multidisciplinary functional elements, obtained multidimensional parameters of the multidisciplinary functional elements through numerical simulation and experimental testing methods, and established parameterized geometric performance mapping relationships of the multidisciplinary functional elements.

[0064] Numerical simulation methods include static and dynamic simulation analysis of multidisciplinary functional elements using finite element software.

[0065] Experimental testing methods include verifying the static properties of multidisciplinary functional elements by testing with a universal testing machine and verifying the dynamic properties of multidisciplinary functional elements by testing with an impact test bench or vibration table.

[0066] In this embodiment, the multidisciplinary functional element construction library also has functions such as classification retrieval, parameter retrieval, display of parameterized geometric performance mapping relationship curves, and support for parameter input and mapping relationship expansion of newly added functional elements.

[0067] In one specific implementation, a multidisciplinary functional element construction library built based on historical successful design cases includes basic configurations of commonly used multidisciplinary functional elements such as BCC and FCC, and parameterized geometric performance mapping relationships of "bar diameter-stiffness-density". For example, the bar diameter of a BCC cell is positively correlated with the equivalent modulus and the equivalent density, while the lattice size is negatively correlated with the equivalent modulus and the equivalent density. Figure 2 As shown, the multidisciplinary functional element construction library includes various functional elements and their parameterized geometric property mapping relationships, forming a searchable functional element system. The mechanical property parameters of BCC cells in the multidisciplinary functional element construction library in the range of rod diameter 0.8mm-1.2mm and lattice size 15mm-25mm have been simulated and experimentally calibrated.

[0068] In this embodiment, the multi-dimensional parameters include geometric parameters and mechanical performance parameters.

[0069] Geometric parameters include 3D model coordinates, functional element size, and functional element radius.

[0070] Mechanical property parameters include material properties, elastic modulus, Poisson's ratio, and stress-strain curves.

[0071] In this embodiment, the parameterized geometric performance mapping relationship is the mapping relationship between geometric parameters and mechanical performance parameters.

[0072] The parameterized geometric property mapping relationship is a quantitative correlation model that enables direct linkage between geometric parameter inputs and mechanical property parameter outputs. For example, in mechanical functional elements, increasing the rod diameter can improve the elastic modulus and impact strength but increase the equivalent density, while increasing the lattice size can reduce the density but weaken the stiffness; in thermal functional elements, increasing the cell wall thickness of the honeycomb unit can improve the temperature threshold but reduce the thermal conductivity.

[0073] S3. For each stress region, adjust the key parameters of its filling functional element based on its environmental stress requirements and the parameterized geometric performance mapping relationship between its filling functional element and the filling functional element to obtain its matching functional element.

[0074] For example, in stress concentration regions, the diameter of functional elements should be increased and the lattice size should be decreased; in non-stress concentration regions, the lattice size should be increased and the diameter of functional elements should be decreased; in irregular regions, the topological morphology of functional elements needs to be adjusted to achieve gradient adaptation.

[0075] Key parameters are multi-dimensional parameters, which can be geometric parameters or mechanical performance parameters. According to the parametric geometric performance mapping relationship, when the key parameter is adjusted as a geometric parameter, the mechanical performance parameter changes accordingly, which belongs to the forward design process; when the key parameter is adjusted as a mechanical performance parameter, the geometric parameter changes accordingly, which belongs to the reverse design process.

[0076] In one possible implementation, key parameters include functional element rod / radius, functional element size, equivalent density, and equivalent elastic modulus, where functional element rod / radius and functional element size are geometric parameters, and equivalent density and equivalent elastic modulus are mechanical property parameters.

[0077] Equivalent density is different from density. Density is defined by the material, while equivalent density is defined by the macroscopic structure after the functional elements are filled in a lattice. The difference between equivalent elastic modulus and elastic modulus is similar.

[0078] For different stress regions, the functional elements used for filling may be different types of functional elements, or they may be the same type of functional elements with different key parameters.

[0079] S4. Fill each matching functional element into its corresponding stress region using a fast reconstruction algorithm, and merge adjacent stress regions to obtain a reconstruction model of the complex functional structural component.

[0080] In this embodiment, the fast reconstruction algorithm fills each matching functional element into its corresponding stress region, and the fusion of adjacent stress regions includes:

[0081] Field-driven growth is used to generate lattices for each matching functional element in its corresponding stress region, with the volume of the lattice being larger than the volume of its corresponding stress region.

[0082] By using Boolean operations to take the intersection, the lattice is cut into the geometry of its corresponding stress region, so that the lattice filling effect has better adaptability to the region geometry.

[0083] Since adjacent lattices have different functional element types and geometric parameters, the overlap length of adjacent lattices needs to be adjusted through topological connection to eliminate overlapping parts and ensure smooth connection between adjacent lattices, thereby achieving the fusion of adjacent stress regions.

[0084] In one specific implementation, the volume of the lattice is greater than the volume of its corresponding stress region:

[0085] The lattice can form a layer of size surrounded by complete matching functional elements around its corresponding stress region.

[0086] Field-driven growth, Boolean operations, and topological connectivity are the three core technologies of lattice filling.

[0087] Field-driven growth utilizes spatial fields (such as distance fields, stress fields, temperature fields, etc.) to control the distribution of lattice parameters, achieving a transformation from uniform filling to adaptive filling. Here, the field is the rule that assigns values ​​to each point in space.

[0088] Boolean operations are a mathematical method that combines two or more geometric shapes using logical operators (union, intersection, difference) to generate new shapes. In dot matrix filling, it is used to combine regular dot matrices with the shape of parts.

[0089] Topological connection is the way nodes are connected in a lattice structure. It describes how elements are connected to each other to form a network. It does not consider specific size and shape, but only focuses on the abstract structural characteristics of the connection relationship.

[0090] In one possible implementation, the refactored model is in the format of STP or STL.

[0091] S5. Perform environmental stress adaptability verification and accuracy calibration on the reconstructed model. If both pass, the final model of the complex functional structural component is obtained. Otherwise, determine whether the number of reconstructions exceeds the preset threshold. If it does not exceed the threshold, execute S3-S5. If it exceeds the threshold, rebuild the multidisciplinary functional element construction library and then execute S2-S5.

[0092] Environmental stress adaptability refers to the ability of a structural component to withstand and adapt to various environmental stresses (such as vibration, shock, acceleration, temperature, etc.) throughout its entire life cycle without failure or performance degradation.

[0093] Environmental stress adaptability verification: The reconstructed model is imported into the finite element simulation software to simulate the structural stress distribution, displacement deformation, acceleration response and other results under the corresponding impact response spectrum, random vibration, acceleration and other working conditions, and to determine whether it meets the preset performance indicators.

[0094] Accuracy calibration: The key dimensions of the reconstructed model (such as the connection position between functional elements and the model, the connection and fusion position between different functional elements, and the gradient change position of functional elements) are detected by 3D modeling software to determine whether the reconstructed model meets the accuracy index, so that the model accuracy meets the requirements of additive manufacturing process.

[0095] In this embodiment, the preset threshold value ranges from 3 to 5.

[0096] The above-mentioned solution, through a "multidisciplinary functional element construction library + rapid reconstruction" model, avoids full-size modeling and significantly shortens the modeling cycle of complex functional structural components. Relying on parametric geometric performance mapping relationships, it achieves precise linkage between functional element parameters and structural component performance. Furthermore, due to its much higher accuracy in predicting mechanical behavior compared to traditional methods, the success rate of the first iteration is significantly improved, reducing designers' over-reliance on experience. The callable multidisciplinary functional element construction library lays the foundation for rapid design optimization in additive manufacturing of complex functional structural components. This library can also be expanded according to different needs, making it suitable for modeling various complex functional structural components. Combined with a rapid reconstruction algorithm, suitable functional elements are filled with variable-density gradients, thereby achieving rapid and high-precision modeling of complex functional structural components.

[0097] The above-mentioned scheme has the advantages of significantly improved design and modeling efficiency, high model accuracy, good environmental stress matching, and strong versatility and scalability. It can provide advanced design methods to support the rapid response manufacturing of complex load-bearing structural components in the aerospace field, and significantly improve design efficiency and modeling accuracy.

[0098] In a specific implementation, such as Figure 3 As shown, the complex functional structural component is a certain type of reflector structure in the aerospace field. Its geometric layout is a ring structure with an outer diameter of Φ210mm and an inner diameter of Φ41mm. There are 12 external mounting holes of Φ4.5mm evenly distributed in the circumference direction, where Φ represents the diameter. Analysis of its actual environmental stress conditions shows that it needs to have the performance characteristics of high rigidity and light weight. Combining its spatial geometric characteristics (including geometric layout and geometric constraints), a hollow design can be made at a radial thickness of 50mm and filled with functional element structures.

[0099] Based on the requirements of high stiffness and lightweight of the reflector and the vibration and impact load conditions, BCC cell was selected from the multidisciplinary functional element construction library as the filling functional element. This cell can balance the performance of stiffness and lightweight, and its geometric dimensions are adapted to the radial hollow area.

[0100] Based on the parametric geometric performance mapping relationship, combined with the geometric constraints of the mirror and the environmental stress requirements, the BCC cell rod diameter is adjusted to Φ1mm and the lattice size is adjusted to 20mm. This parameter combination corresponds to an equivalent density of 0.0376285 and an equivalent modulus of 0.000286052, which can achieve a combination of high stiffness and lightweight.

[0101] A fast reconstruction algorithm is used to fill the adjusted BCC cells into the radial cutout area of ​​the mirror, and the STP format model is output, as shown in the image. Figure 4 As shown;

[0102] The model was imported into finite element software for static simulation, and the results are as follows: Figure 5 As shown, the mass of the reconstructed model was reduced from 2.85 kg to 0.57 kg, the displacement deformation was reduced by 32% compared with the original model, and the accuracy of key dimensions met the requirements of additive manufacturing. Finally, a high-precision mirror model that matches environmental stress was obtained.

[0103] Example 2

[0104] Please refer to Figure 6 , Figure 6 The image shows a rapid modeling device for complex functional structural components provided in this embodiment, including an analysis module, a filtering module, an adjustment module, a reconstruction module, and a verification module, wherein:

[0105] The analysis module is used to analyze the geometric layout and performance requirements of complex functional structural components, determine their environmental stress requirements and spatial geometric constraints, and divide the complex functional structural components into different stress regions. The environmental stress requirements include the type of environmental stress load, the magnitude of environmental stress, and the path of environmental stress transmission.

[0106] The filtering module is used to select filling functional elements from the multidisciplinary functional element construction library for each stress region based on its performance requirements, environmental stress load type and spatial geometric constraints. The multidisciplinary functional element construction library includes multidisciplinary functional elements and their multidimensional parameters and parameterized geometric performance mapping relationships.

[0107] The adjustment module is used to adjust the key parameters of the filling functional elements for each stress region based on its environmental stress requirements and the parameterized geometric performance mapping relationship between the filling functional elements and the filling functional elements, so as to obtain its matching functional elements.

[0108] The reconstruction module is used to fill each matching functional element into its corresponding stress region through a fast reconstruction algorithm, and to merge adjacent stress regions to obtain a reconstruction model of the complex functional structural component.

[0109] The verification module is used to verify the environmental stress adaptability and accuracy calibration of the reconstructed model. If both pass, the final model of the complex functional structural component is obtained. Otherwise, it is determined whether the number of reconstructions exceeds the preset threshold. If it does not exceed the threshold, it jumps to the adjustment module. If it exceeds the threshold, it reconstructs the multidisciplinary functional element construction library and then jumps to the screening module.

[0110] Example 3

[0111] This embodiment provides a device for rapid modeling of complex functional structural components. The device may specifically include:

[0112] A processor; and a memory arranged to store computer-executable instructions, which, when executed, cause the processor to perform the steps as described in the above embodiments.

[0113] Example 4

[0114] This embodiment provides a storage medium for rapid modeling of complex functional structural components. Specifically, the storage medium may include:

[0115] A processing program for rapid modeling of complex functional structural components is stored on a storage medium. When the processing program for rapid modeling of complex functional structural components is executed by a processor, it implements the steps described in the above embodiments.

[0116] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. A method for rapid modeling of complex functional structural components, characterized in that, include: S1. Analyze the geometric layout and performance requirements of complex functional structural components, determine their environmental stress requirements and spatial geometric constraints, and divide the complex functional structural components into different stress regions. The environmental stress requirements include the type of environmental stress load, the magnitude of environmental stress, and the path of environmental stress transmission. S2. For each stress region, fill functional elements are selected from the multidisciplinary functional element construction library based on its performance requirements, environmental stress load type and spatial geometric constraints. The multidisciplinary functional element construction library includes multidisciplinary functional elements and their multidimensional parameters and parameterized geometric performance mapping relationships. S3. For each stress region, the key parameters of its filling functional element are adjusted based on its environmental stress requirements and the parameterized geometric performance mapping relationship between its filling functional element and the filling functional element to obtain its matching functional element. S4. Fill each matching functional element into its corresponding stress region using a fast reconstruction algorithm, and merge adjacent stress regions to obtain a reconstruction model of the complex functional structural component. S5. Perform environmental stress adaptability verification and accuracy calibration on the reconstructed model. If both pass, the final model of the complex functional structural component is obtained. Otherwise, determine whether the number of reconstructions exceeds the preset threshold. If it does not exceed the threshold, execute S3-S5. If it exceeds the threshold, reconstruct the multidisciplinary functional element construction library and then execute S2-S5.

2. The method according to claim 1, characterized in that, The process of dividing the complex functional structural component into different stress regions includes: Based on the geometric layout, the complex functional structural component is divided into a part that requires filling with functional elements and a part that does not require filling with functional elements. Based on the environmental stress load type and spatial geometric constraints, the portion of the functional element to be filled is divided into a high-stress zone and a low-stress zone.

3. The method according to claim 1, characterized in that, The selection of filler functional elements from a multidisciplinary functional element library for each stress region, based on its performance requirements, environmental stress load type, and spatial geometric constraints, includes: Select the functional element according to the type of environmental stress load; Incompatible functional elements are removed from the selected functional elements based on the spatial geometric constraints. Based on the performance requirements, the functional element with the highest performance redundancy is selected from the remaining functional elements as the filling functional element.

4. The method according to claim 1, characterized in that, The construction process of the multidisciplinary functional meta-construction library includes: We designed and summarized multidisciplinary functional elements, obtained multidimensional parameters of the multidisciplinary functional elements through numerical simulation and experimental testing methods, and established parameterized geometric performance mapping relationships of the multidisciplinary functional elements.

5. The method according to claim 1, characterized in that, The multidimensional parameters include geometric parameters and mechanical performance parameters.

6. The method according to claim 1, characterized in that, The parameterized geometric property mapping relationship is the mapping relationship between geometric parameters and mechanical property parameters.

7. The method according to claim 1, characterized in that, The step of filling each matching functional element into its corresponding stress region using a fast reconstruction algorithm and merging adjacent stress regions includes: The matching functional elements are generated into a lattice in their corresponding stress regions by field-driven growth, and the volume of the lattice is larger than the volume of the corresponding stress region. The lattice is cut into the geometry of its corresponding stress region by taking the intersection in Boolean operations; By adjusting the overlap length of adjacent lattice points through topological connections, the fusion of adjacent stress regions can be achieved.

8. A rapid modeling device for complex functional structural components, characterized in that, It includes an analysis module, a filtering module, an adjustment module, a reconstruction module, and a verification module, among which: The analysis module is used to analyze the geometric layout and performance requirements of complex functional structural components, determine their environmental stress requirements and spatial geometric constraints, and divide the complex functional structural components into different stress regions. The environmental stress requirements include the type of environmental stress load, the magnitude of environmental stress, and the path of environmental stress transmission. The filtering module is used to select filling functional elements from the multidisciplinary functional element construction library for each stress region based on its performance requirements, environmental stress load type and spatial geometric constraints. The multidisciplinary functional element construction library includes multidisciplinary functional elements and their multidimensional parameters and parameterized geometric performance mapping relationships. The adjustment module is used to adjust the key parameters of the filling functional element for each stress region based on its environmental stress requirements and the parameterized geometric performance mapping relationship of its filling functional element, so as to obtain its matching functional element. The reconstruction module is used to fill each matching functional element into its corresponding stress region through a fast reconstruction algorithm, and to merge adjacent stress regions to obtain a reconstruction model of the complex functional structural component. The verification module is used to verify the environmental stress adaptability and calibrate the accuracy of the reconstructed model. If both pass, the final model of the complex functional structural component is obtained. Otherwise, it is determined whether the number of reconstructions exceeds a preset threshold. If it does not exceed the threshold, it jumps to the adjustment module. If it exceeds the threshold, it reconstructs the multidisciplinary functional element construction library and then jumps to the screening module.

9. An electronic device, characterized in that, include: processor; And a memory arranged to store computer-executable instructions, which, when executed, cause the processor to perform the steps of the method as described in any one of claims 1-7.

10. A storage medium, characterized in that, include: The storage medium stores a processing program for rapid modeling of complex functional structural components, which, when executed by a processor, implements the steps of the method as described in any one of claims 1-7.

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