3D Mesh Generation for Thin Structures Using Blocking Face Extrusion
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Solution Overview
Problem
Existing mesh generation methods for three-dimensional objects, particularly thin surfaces, often result in inaccurate or coarse representations, requiring numerous steps and failing to capture complex domains effectively.
Innovation Solution
A method involving the identification of thin and non-thin surfaces, generation of 2D blocking faces, and extrusion to create a 3D mesh representation, using a computer-implemented process to determine thickness and generate a 3D mesh based on extruded 2D blocking faces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If prior art mesh generation methods are used for thin surfaces, then the process is simpler, but the mesh accuracy and quality deteriorate
Solution Approach 1:
The method segments the surface generation process into distinct phases: creating a first surface, generating a thin surface between two surfaces, and creating a second surface. This segmentation allows each phase to be optimized independently, improving overall mesh accuracy for thin structures while maintaining manageable process complexity through systematic division of tasks.
Solution Approach 2:
The invention transitions from traditional 2D surface meshing to a 3D volumetric approach by generating a thin surface that exists between two surfaces in three-dimensional space. This dimensional change enables accurate representation of thin-walled structures by defining the thin surface through its position between boundary surfaces, rather than attempting to mesh the thin surface directly in 2D.
2Manufacturing precision
If traditional mesh generation is used for thin structures, then fewer steps are required, but the mesh becomes too coarse or inaccurate
Solution Approach 1:
The method performs preliminary actions by first generating the first and second boundary surfaces before creating the thin surface between them. This preliminary definition of boundary conditions enables the thin surface to be accurately positioned and meshed in subsequent steps, ensuring high mesh quality for thin structures while organizing the process into logical sequential steps.
Solution Approach 2:
The invention applies local quality by treating the thin surface region differently from other regions. The thin surface is specifically generated between two boundary surfaces with controlled element distribution, allowing for higher mesh density and quality in the thin-walled regions where it is most needed, while other regions can use coarser meshing strategies.
3Productivity
If simple mesh generation methods are used, then the process is faster, but complex domains cannot be captured effectively
Solution Approach 1:
The method achieves universality by creating a multi-functional mesh generation approach that can handle various domain complexities. The thin surface generation technique between two boundary surfaces can be applied to different types of thin-walled structures (shells, panels, hollow sections) across various industries, making the process both versatile for complex domains and efficient through standardized procedures.
Data Source
AI summary
A method and apparatus of a device for obtaining a geometric representation of an object including a thin structure having a first surface and a second surface; generating one or more 2D blocking faces as a simplified representation of one of the first surface or the second surface; generating one or more 3D blocks based on an extrusion of the one or more 2D blocking faces; and determining a 3D mesh of the object based on the one or more 3D blocks.