3 results about "Finite element stress analysis" patented technology

This application provides a structural optimization method and system for slicing materials specifically designed for 3D-printed eyeglass frames. The method includes: performing finite element stress analysis and extracting continuous stress field data and principal stress directions; calculating dimensionless stress parameters using the continuous stress field data to divide the model's interior into different stress zones and match them with different unit cell types; adjusting the rotation angle and aspect ratio of the unit cells in real time based on the principal stress directions and stress ratios to generate a stress-adaptive internal lattice structure; performing differential geometry analysis on the surface of the 3D eyeglass frame model to construct a comprehensive curvature threshold function and generate a support structure; searching for optimal structural parameters through Pareto front analysis; and integrating the internal lattice structure, support structure, and structural parameters to generate slicing data and plan the printing path. This application optimizes the load-bearing efficiency of the eyeglass frame structure and improves the specific strength of the material.

The present application relates to the technical field of aero-engine probability damage tolerance evaluation, and particularly relates to a triangular quadrilateral two-dimensional hybrid grid stress partitioning method for aero-engine wheel disc, comprising the following steps: obtaining finite element stress analysis result data of the wheel disc component, preprocessing, and obtaining preprocessed input data; obtaining a convex hull boundary formed by all nodes by using the Graham method, and obtaining a graph boundary based on the convex hull boundary; obtaining stress pre-grouping and element type pre-grouping of each grid element; establishing an element adjacency graph based on the adjacent relationship of each grid element; searching the element adjacency graph by using a breadth-first search algorithm, and dividing grid elements with the same stress pre-grouping and the same element type pre-grouping into the same partition; and finally obtaining partition numbers of each grid element as the wheel disc stress partitioning result; the present application can improve the calculation accuracy and efficiency of the wheel disc stress partitioning.

The application provides a robot head appearance digital adaptive customization generation method and system, the system is based on robot head three-dimensional data, designs data pretreatment, feature recognition, parameterized modeling, multi-constraint optimization, structure reinforcement, interface generation, standardized whole-process automation link of production output, each function module of the modular system is uniformly scheduled by a processor unified scheduling module, the core of the method realizes micron-level accurate adaptation of the appearance model and the head surface through multi-constraint surface adaptive iterative optimization, the durability of the appearance part is improved through finite element stress analysis and targeted structure reinforcement, the fusion of individualization and scaling is realized through whole-process standardization and parameterized modeling, and the technical problems of insufficient accurate adaptation of the appearance of the robot head and the head surface, lack of automatic customization process and poor structure reliability of the appearance part are solved.