弾性変形モデルに対する頂点数を保存した切開方法

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This paper proposes vertex-preserving cutting methods of finite element models for interactive soft tissue simulation with visual and haptic feedback. Compared to related study, our methods describe both 3D geometry and physics of soft tissue incision while not subdividing model elements. This approach does not change the number of vertices, which avoids increase of computation time and allows fast and stable update of stiffness matrix. Some experiments on general-purpose PC confirmed that valid cutting representation is possible and the shapes of finite element elastic models are similar to those of real elastic materials. Also, the algorithms are about 5 times faster than conventional approach and real-time simulation is achieved.
2007-12-31