X線CTデータに基づく骨体の自動モデリング手法 : デラウニー分割を利用した有限要素モデルの生成(機械力学,計測,自動制御)

概要

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This study deals with an automated modeling method generating a finite element model of a bone from the cross-sectional images by a X-ray CT scanner. The modeling method is composed of four processes. The first provides a boxel space of a bone from the CT images. The second distributes nodal points in the space. The third generates tetrahedral elements with the nodal points using Delaunay triangulation. The fourth finishes accurately the model by removing excessive elements. We pointed out importance of layout planning of nodal points recognizing features of the bony shape. The proposed method distributes proper nodal points in the boxel space and produces the exact finite element model of the bone with desired total number of nodal points. We also discussed a method that controls size of elements according to bone density using CT values in the cross-sectional images.
一般社団法人日本機械学会の論文
2002-05-25