個体差の統計分析に基づく多様な形状特徴を持つ手指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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We analyzed individual differences of finger geometry in order to synthesize finite element models with geometric variations. Volume registration technique was employed to quantify the individual differences from 3-dimensional MRI images of 50 male subjects. The registration method computes a displacement field that transforms geometry of the template subject into that of the target subject, thus the displacement field is a good measure of the geometric difference between two different subjects. The result of principal component analysis for the computed displacement fields has clarified the principal features of finger geometry corresponding to dirmension, thickness, thickness of finger pad, ratio of bone length and direction of bending. We can synthesize possible variations of finger geometry by transforming a template FE model according to a displacement field computed by weighted sum of these principal features.
2009-10-25