3D Shape Data Generation for Multi-Resolution Material Boundaries
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Solution Overview
Problem
In three-dimensional shape modeling using multiple materials with different resolutions, the selection of a modeling material with a predetermined resolution at the boundary region can lead to significant variations from the desired physical properties of the shape.
Innovation Solution
A three-dimensional shape data generating apparatus that acquires element data by dividing the shape into first and second elements corresponding to different modeling materials, with the second elements having a lower resolution and larger size, and generates shape data by setting modeling materials based on the number of first elements covered by the second elements, optimizing the structure using methods like the Solid Isotropic Material with Penalization (SIMP) method.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a modeling material with a predetermined resolution is simply selected at the boundary region between modeling materials with different resolutions, then the manufacturing process is simplified, but the physical property accuracy of the three-dimensional shape significantly varies from the desired property
Solution Approach 1:
The patent changes the resolution parameter of modeling materials dynamically based on the curvature of the three-dimensional shape. High-curvature regions use high-resolution materials while low-curvature regions use low-resolution materials, optimizing both accuracy and manufacturing efficiency. This resolves the contradiction by making resolution selection adaptive rather than fixed, improving physical property accuracy without significantly complicating the manufacturing process.
Solution Approach 2:
The patent applies different resolution qualities to different regions of the three-dimensional shape based on local curvature characteristics. Boundary regions with low curvature use lower resolution materials, while regions with high curvature use higher resolution materials. This local differentiation ensures physical property accuracy is maintained where needed while simplifying material selection in less critical areas, thereby resolving the contradiction between manufacturing simplicity and physical property accuracy.
2Adaptability or versatility
If multiple modeling materials with different resolutions are used to model three-dimensional shapes, then the adaptability to represent complex geometries is improved, but the complexity of selecting and managing multiple materials increases
Solution Approach 1:
The patent uses curvature as a parameter to automatically determine the appropriate resolution level for different regions of the three-dimensional shape. This automated parameter-based selection reduces the complexity of managing multiple materials while maintaining the adaptability to represent complex geometries accurately. The system complexity is reduced by establishing a clear relationship between curvature and material resolution selection.
Solution Approach 2:
The patent segments the three-dimensional shape into regions based on curvature characteristics, assigning different resolution levels to different segments. This segmentation approach allows the system to use multiple materials with different resolutions effectively, improving geometry representation capability while managing material complexity through systematic regional division rather than arbitrary material selection.
Data Source
AI summary
A three-dimensional shape data generating apparatus includes: an acquiring section that acquires element data generated by dividing a three-dimensional shape into first elements, the three-dimensional shape being modeled with a plurality of modeling materials having different resolutions, each first element corresponding to a resolution of a first modeling material among the plurality of modeling materials; a dividing section that divides the three-dimensional shape into second elements, each second element corresponding to a second modeling material having a resolution lower than the resolution of the first modeling material and having a size larger than the first element; and a generating section that generates three-dimensional shape data through setting modeling materials for the first and second elements, respectively, according to the number of the first elements covered by the second element.