CN-121997637-A - Rapid modeling method and device for complex functional structural member

CN121997637ACN 121997637 ACN121997637 ACN 121997637ACN-121997637-A

Abstract

The invention provides a rapid modeling method and device for a complex functional structural member, which comprises the steps of dividing the complex functional structural member into different stress areas, selecting filling functional elements from a multidisciplinary functional element construction library according to performance requirements, environment stress load types and space geometric constraints of each stress area, adjusting key parameters of the filling functional elements according to the environment stress requirements and parameterized geometric performance mapping relation of the filling functional elements of each stress area to obtain matching functional elements, filling each matching functional element into the corresponding stress area through a rapid reconstruction algorithm, and fusing adjacent stress areas to obtain a reconstruction model of the complex functional structural member. The invention provides a rapid modeling method and device for a complex functional structural member, which are used for solving the problems that the traditional method is difficult to solve the problems of low design efficiency, poor environmental stress adaptability and difficulty in meeting the requirements of rapid replacement of mass, multiple varieties and additive manufacturing of the structural member.

Inventors

GAO GUORU
WU YAPENG
ZHANG XIYANG
WANG CAIFENG
DAI WEIYANG
AN YINING

Assignees

北京遥感设备研究所

Dates

Publication Date: 20260508
Application Date: 20251226

Claims (10)

1. A rapid modeling method for a complex functional structural member is characterized by comprising the following steps: S1, analyzing the geometric layout and performance requirements of a complex functional structural member, determining the environmental stress requirements and space geometric constraints of the complex functional structural member, and dividing the complex functional structural member into different stress areas, wherein the environmental stress requirements comprise environmental stress load types, environmental stress sizes and environmental stress transmission paths; S2, selecting filling functional elements from a multidisciplinary functional element construction library aiming at each stress area based on performance requirements, environmental stress load types and space geometric constraints, wherein the multidisciplinary functional element construction library comprises multidisciplinary functional elements, multidimensional parameters thereof and parameterized geometric performance mapping relations; S3, aiming at each stress area, adjusting key parameters of the filling functional elements based on the environmental stress requirement and the parameterized geometric performance mapping relation of the filling functional elements to obtain matching functional elements; S4, filling each matching functional element into a corresponding stress region through a rapid reconstruction algorithm, and fusing adjacent stress regions to obtain a reconstruction model of the complex functional structural member; and S5, carrying out environment stress suitability verification and precision calibration on the reconstruction model, if the environment stress suitability verification and the precision calibration pass through the reconstruction model, obtaining a final model of the complex functional structural member, otherwise, judging whether the reconstruction times exceed a preset threshold, if the reconstruction times do not exceed the preset threshold, executing S3-S5, and if the reconstruction times exceed the preset threshold, reconstructing the multidisciplinary functional element construction library, and then executing S2-S5.
2. The method of claim 1, wherein the dividing the complex functional structure into different stress regions comprises: dividing the complex functional structural member into a part needing to be filled with functional elements and a part needing not to be filled with functional elements according to the geometric layout; and dividing the part to be filled with the functional element into a high-stress region and a low-stress region according to the environmental stress load type and the space geometrical constraint.
3. The method of claim 1, wherein selecting, for each stress region, a fill function from a multidisciplinary function construction library based on its performance requirements, environmental stress load types, and space geometry constraints comprises: selecting a functional element according to the environmental stress load type; Deleting incompatible functional elements from the selected functional elements according to the space geometric constraint; And selecting the functional element with the maximum performance redundancy from the rest functional elements according to the performance requirement as the filling functional element.
4. The method of claim 1, wherein the process of constructing the multidisciplinary functional element construction library comprises: Designing and summarizing the multidisciplinary functional elements, obtaining multidisciplinary parameters of the multidisciplinary functional elements through a numerical simulation method and an experimental test method, and establishing a parameterized geometric performance mapping relation of the multidisciplinary functional elements.
5. The method of claim 1, wherein the multi-dimensional parameters include geometric parameters and mechanical property parameters.
6. The method of claim 1, wherein the parameterized geometric property map is a map of geometric parameters and mechanical property parameters.
7. The method of claim 1, wherein filling each matching functional element into its corresponding stress region by a fast reconstruction algorithm and fusing adjacent stress regions comprises: Generating a lattice of each matching functional element in a corresponding stress area through field-driven growth, wherein the volume of the lattice is larger than that of the corresponding stress area; cutting the lattice into the geometric shapes of the corresponding stress areas by taking an intersection in Boolean operation; and the overlapping length of adjacent lattices is adjusted through topological connection, so that the fusion of adjacent stress areas is realized.
8. The utility model provides a quick modeling arrangement of complicated function structure, its characterized in that includes analysis module, screening module, adjustment module, reconfigurated module and verification module, wherein: The analysis module is used for analyzing the geometric layout and performance requirements of the complex functional structural member, determining the environmental stress requirements and space geometric constraints of the complex functional structural member, and dividing the complex functional structural member into different stress areas, wherein the environmental stress requirements comprise the environmental stress load types, the environmental stress sizes and the environmental stress transmission paths; the screening module is used for selecting filling functional elements from a multidisciplinary functional element construction library aiming at each stress area based on performance requirements, environment stress load types and space geometric constraints, wherein the multidisciplinary functional element construction library comprises multidisciplinary functional elements, multidimensional parameters thereof and parameterized geometric performance mapping relations; The adjustment module is used for adjusting key parameters of the filling functional elements of the stress areas based on the environmental stress requirements and the parameterized geometric performance mapping relation of the filling functional elements to obtain matching functional elements; The reconstruction module is used for filling each matching functional element into a corresponding stress area through a rapid reconstruction algorithm, and fusing adjacent stress areas to obtain a reconstruction model of the complex functional structural member; and the verification module is used for carrying out environment stress suitability verification and precision calibration on the reconstruction model, obtaining a final model of the complex functional structural member if the final model passes through the verification module, otherwise, judging whether the reconstruction times exceeds a preset threshold value, if the reconstruction times does not exceed the preset threshold value, jumping to the adjustment module, and if the reconstruction times exceed the preset threshold value, reconstructing the multidisciplinary functional element construction library and jumping to the screening module.
9. An electronic device, comprising: a processor and a memory arranged to store computer executable instructions which when executed cause the processor to perform the steps of the method according to any of claims 1-7.
10. A storage medium, comprising: the storage medium stores thereon a process for rapid modeling of a complex functional structure, which process, when executed by a processor, implements the steps of the method according to any of claims 1-7.

Description

Rapid modeling method and device for complex functional structural member Technical Field The invention relates to the technical field of aerospace additive manufacturing, in particular to a method and a device for rapidly modeling a complex functional structural member. Background In the field of aerospace, additive manufacturing technology is widely applied to the production of complex functional load-bearing structural members because integrated manufacturing of complex structural members can be achieved. However, the conventional modeling method for the complex functional structural member is difficult to solve the problems of low design efficiency, poor adaptability to environmental stress and the like, and meanwhile, the requirements of mass production, multiple varieties and rapid production replacement of additive manufacturing of the structural member are difficult to meet. Disclosure of Invention The invention provides a rapid modeling method and device for a complex functional structural member, which are used for solving the problems that the traditional complex functional structural member modeling method is difficult to solve, such as low design efficiency and poor environmental stress adaptability, and meanwhile, the requirements of rapid replacement of mass, multiple varieties and additive manufacturing of structural members are difficult to meet. In a first aspect, the present invention provides a method for rapidly modeling a complex functional structural member, including: S1, analyzing the geometric layout and performance requirements of a complex functional structural member, determining the environmental stress requirements and space geometric constraints of the complex functional structural member, and dividing the complex functional structural member into different stress areas, wherein the environmental stress requirements comprise environmental stress load types, environmental stress sizes and environmental stress transmission paths; S2, selecting filling functional elements from a multidisciplinary functional element construction library aiming at each stress area based on performance requirements, environmental stress load types and space geometric constraints, wherein the multidisciplinary functional element construction library comprises multidisciplinary functional elements, multidimensional parameters thereof and parameterized geometric performance mapping relations; S3, aiming at each stress area, adjusting key parameters of the filling functional elements based on the environmental stress requirement and the parameterized geometric performance mapping relation of the filling functional elements to obtain matching functional elements; S4, filling each matching functional element into a corresponding stress region through a rapid reconstruction algorithm, and fusing adjacent stress regions to obtain a reconstruction model of the complex functional structural member; and S5, carrying out environment stress suitability verification and precision calibration on the reconstruction model, if the environment stress suitability verification and the precision calibration pass through the reconstruction model, obtaining a final model of the complex functional structural member, otherwise, judging whether the reconstruction times exceed a preset threshold, if the reconstruction times do not exceed the preset threshold, executing S3-S5, and if the reconstruction times exceed the preset threshold, reconstructing the multidisciplinary functional element construction library, and then executing S2-S5. Optionally, the dividing the complex functional structure into different stress areas includes: dividing the complex functional structural member into a part needing to be filled with functional elements and a part needing not to be filled with functional elements according to the geometric layout; and dividing the part to be filled with the functional element into a high-stress region and a low-stress region according to the environmental stress load type and the space geometrical constraint. Optionally, selecting, for each stress region, a fill function from a multidisciplinary function construction library based on its performance requirements, environmental stress load types, and space geometry constraints includes: selecting a functional element according to the environmental stress load type; Deleting incompatible functional elements from the selected functional elements according to the space geometric constraint; And selecting the functional element with the maximum performance redundancy from the rest functional elements according to the performance requirement as the filling functional element. Optionally, the process of constructing the multidisciplinary functional element construction library includes: Designing and summarizing the multidisciplinary functional elements, obtaining multidisciplinary parameters of the multidisciplinary functional elements through a numerical simulati