Analysis Mesh Data Generation for Complex CAD Shapes
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Solution Overview
Problem
Existing methods for generating analysis mesh data from CAD data with complicated shapes, such as those with bosses or ribs on curved surfaces, face difficulties in determining boundary surfaces, leading to increased time and effort in shape division.
Innovation Solution
An analysis mesh data generating device that searches for similar model CAD data, retrieves associated mesh data, calculates application positions, deletes and combines mesh data to simplify the generation process without performing shape division of the CAD data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If shape division is performed on CAD data with complicated shapes (bosses or ribs on curved surfaces), then mesh data can be generated, but determining boundary surfaces becomes difficult and time-consuming
Solution Approach 1:
The patent applies copying by retrieving and reusing existing mesh data from similar CAD models stored in the database. Instead of performing complex shape division on the current complicated CAD data, the system finds previously processed mesh data with similar geometric characteristics and copies it to the target model, thereby avoiding repetitive complex processing while maintaining mesh quality
Solution Approach 2:
The patent implements preliminary action by pre-processing and storing mesh data from various CAD models in a database before they are needed. When generating mesh data for new complicated CAD data, the system queries this pre-prepared database for similar cases, eliminating the need to perform difficult shape division operations from scratch and significantly reducing processing time
2Loss of time
If existing mesh data is applied without shape division, then generation time is shortened, but handling complicated partial shapes becomes challenging
Solution Approach 1:
The patent applies local quality by performing shape division only on specific complicated partial shapes (such as bosses or ribs on curved surfaces) rather than the entire CAD model. The system identifies these localized complex regions, applies appropriate mesh generation techniques only where needed, and combines them with retrieved existing mesh data for the remaining portions, thereby balancing processing efficiency with handling of complex geometries
Data Source
AI summary
The present invention enables easy generation of analysis mesh data from larger CAD data including complicated partial shapes without performing shape division of CAD data. An analysis mesh data generating device comprises: a storage device configured to store CAD data, model CAD data, and model mesh data associated with the model CAD data; and a control device. The control device searches for model CAD data similar to a partial shape in the CAD data from the model CAD data stored in the storage device, obtains model mesh data associated with the retrieved model CAD data from the storage device, calculates an application position of the model mesh data at analysis mesh data generated from the CAD data, deletes mesh data relate with the partial shape in the analysis mesh data, and combines the model mesh data at the calculated application position.