4 results about "Geometric configuration" patented technology

The invention relates to a multi-piece multi-dimensional functionally graded material optimization method, device, equipment and medium, and belongs to the technical field of functionally graded materials.According to the multi-piece multi-dimensional functionally graded material optimization method, a multi-piece three-dimensional functionally graded material porous structure is constructed based on a B spline or NURBS; the constructed PHT-AIGA is adopted to carry out self-adaptive solution and iterative refinement on the geometric configuration of the porous structure of the multiple pieces of three-dimensional functionally graded materials, a numerical analysis template grid meeting an error threshold value is obtained, and the PHT-AIGA comprises geometric analysis such as a PHT spline base, a super-convergence recovery base error estimation algorithm and a Doffler marking strategy; according to the method, a multi-objective optimization function is constructed with the minimum mass and the maximum free vibration fundamental frequency as optimization objectives, iterative solution is conducted on the multi-objective optimization function, optimized design variables are obtained, and the precision and efficiency of multi-objective optimization of the multiple pieces of three-dimensional functionally graded materials are improved.

The application discloses a non-rotation type integral inertial particle separator design method, which comprises the following steps: S1, establishing an XY coordinate system and determining a plurality of key nodes on a meridian plane flow passage profile and coordinates of the key nodes; S2, setting a slope value for each key node; S3, calculating a two-degree-of-freedom adjustable curve between two key nodes which need to be connected into a line; S4, calculating the two-degree-of-freedom adjustable curve between all the key nodes which need to be connected, and sequentially connecting to form a meridian plane flow passage profile of the non-rotation type integral inertial particle separator; and S5, rotating the meridian plane flow passage profile by 360 degrees around the x-axis of the coordinate system to generate a solid of revolution, and obtaining a three-dimensional geometric configuration of the non-rotation type integral inertial particle separator. i,1 i,2 The application adopts a two-degree-of-freedom adjustable curve function, and the shape of the curve between any adjacent key nodes can be freely changed by changing free parameters O i,1 i,2 , O i,2 , so that the design and research of the parameterization of the non-rotation type integral inertial particle separator are more flexible and rapid.

This application discloses a method, apparatus, equipment, and medium for optimizing the geometric layout of an aircraft under the influence of aerodynamics and aero-thermal coupling, relating to the field of aircraft layout design technology. The method involves determining the geometric shape and parameters corresponding to the geometric configuration, calculating the geometric deformation of the configuration under steady-state conditions, determining the deformation location and deformation value of the aircraft under the influence of aerodynamics and aero-thermal coupling, characterizing the deformation value to obtain a geometric representation, sampling the geometric parameters and deformation values ​​to obtain geometric configurations under different combinations of geometric parameters and deformation, constructing an aerodynamic performance prediction model, inputting the current geometric parameters and current geometric representation into the aerodynamic performance prediction model, outputting predicted aerodynamic performance indicators, selecting the optimal predicted aerodynamic performance indicators, and using the corresponding optimal geometric parameters to determine the optimized geometric layout shape of the aircraft. This solves the uncertainty optimization problem in aircraft aerodynamic layout design and improves the robustness of aircraft aerodynamic performance.

The invention relates to the technical field of welding and industrial robot automation, and discloses a welding track planning method and device, a welding robot and a medium. The welding track planning method comprises the steps that three-dimensional geometric model data of a welding workpiece is obtained, and a welding seam path and geometric characteristics of a welding seam are determined based on the model data; establishing a welding seam local coordinate system based on the geometric features; welding bead arrangement is planned according to the local coordinate system, and space arrangement information of each welding bead is obtained; determining geometric configuration parameters of each welding bead based on the spatial arrangement information; and the geometric configuration parameters are mapped to the corresponding welding line paths, and a welding track point set forming the welding track is obtained. According to the method, reliable trajectory planning of the pure linear welding seam is achieved, the application range of the multi-layer multi-pass welding automatic trajectory planning technology is remarkably expanded, and the automation level, the repetition precision and the field implementation efficiency of the welding technology are comprehensively improved.