Automatic Detection of Geometric Features in CAD models by Characteristics

In this paper, we detailed a novel 3D detection method for geometric features in CAD models used in CAD-to-CAE model simplification process. Model preparation is now the most time consuming part in the computer-aided engineering process chain, it is commonly labor intensive. Therefore, the overall objectives are: 1) introduce automation to speed-up the model preparation process; 2) remove redundant features to reduce model mesh size for fast mesh generation and analysis without compromising on solution accuracy. Automatic feature detection that is generic and easily extendable is a key element needed to achieve these objectives. Inside the article, we proposed detection by characteristics to complement existing geometric modeling kernels for CAD systems with defeaturing functions to detect features previously not detectable.