Adaptive Grid Generation for ABAQUS Structural Analysis
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Solution Overview
Problem
Complex product structures pose challenges in balancing analysis efficiency and quality when using finite element structure analysis software like ABAQUS, as they handle excessive information, necessitating a method to simplify grid models effectively.
Innovation Solution
An adaptive grid generating method and system that involves obtaining a three-dimensional grid, converting it to a two-dimensional planar grid, cleaning it using grid cleaning software, and then re-converting it back to a three-dimensional grid to simplify the model for efficient analysis in ABAQUS.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the original complex three-dimensional grid model is directly imported into ABAQUS for analysis, then the structural analysis can capture all detailed features, but the computational burden increases significantly and analysis efficiency decreases
Solution Approach 1:
The patent segments the grid processing into distinct stages: importing the original 3D grid, converting to 2D planar grid, cleaning the 2D grid, and reconstructing to 3D grid. This segmentation allows selective simplification at the 2D stage while preserving essential structural features, resolving the contradiction between maintaining analysis quality and improving computational efficiency.
Solution Approach 2:
The patent employs dimensionality change by converting the three-dimensional grid model into a two-dimensional planar grid for cleaning operations, then reconstructing it back to three-dimensional form. This dimensional transformation enables more effective grid cleaning and simplification while maintaining the essential structural characteristics needed for accurate analysis.
2Productivity
If the complex grid model is simplified to improve analysis efficiency, then computational burden is reduced, but the structural details and analysis accuracy may be compromised
Solution Approach 1:
The patent performs preliminary grid cleaning and simplification actions on the two-dimensional planar grid before the final three-dimensional reconstruction and ABAQUS analysis. This preliminary action removes unnecessary computational complexity while preserving essential structural features, ensuring both improved efficiency and maintained analysis quality in the subsequent simulation process.
Solution Approach 2:
The two-dimensional planar grid serves as an intermediary form between the original complex 3D grid and the final simplified 3D grid for analysis. This intermediary representation allows for effective grid cleaning operations while maintaining the structural information necessary for accurate structural analysis, thus resolving the contradiction between simplification and accuracy.
3Loss of energy
If extensive grid cleaning is performed to simplify the model, then computational resources are saved, but the time required for grid processing increases
Solution Approach 1:
The patent segments the grid cleaning process into a one-time preprocessing step performed on the two-dimensional planar grid, separate from the actual structural analysis phase. This segmentation concentrates the computational effort of grid cleaning into a single efficient operation before reconstruction, reducing both the computational burden during analysis and the overall processing time compared to iterative cleaning approaches.
Data Source
AI summary
An adaptive grid generating method includes obtaining a first three-dimensional grid of a target structure; importing the first three-dimensional grid into a computer-aided engineering software to obtain a first two-dimensional planar grid; importing the first two-dimensional planar grid into a grid cleaning software to obtain a second two-dimensional planar grid; and importing the second two-dimensional planar grid into the computer-aided engineering software to obtain a second three-dimensional grid.