Biomechanics analyses for cooperative heavy working by time dependency three—dimensional measuring.

OF-L,hkA0AVE (RI) : カメラ画角や位置をコンピュータ制御し工場内での協調的な重労働動作を捕捉できる, 三次元動作計測システムを開発した. 下肢の屈曲動作計測をX線透過装置診断と比較したところ, 本システムは作業着着衣時でも良い追従性を有することが証明された. 加えて, 膝関節の有限要素モデルを作成し非線形構造解析シミュレーションを行なった. 靭帯の有無や少しの屈曲角度が荷重支持機能や周辺の最大応力値の増加に強く関与することを明らかにし,協調作業による微妙な姿勢変化が生体内の負担に大きく影響を与えていることが示唆された. 研究成果の概要(英文): In this study, the three-dimensional motion capturing system was developed using digital video cameras. This system enables the measurement of the movement and behavior in the subject wearing regular clothing such as working uniform under all measuring circumstances. Using this system, the knee flexion and extension weremeasured under two wearing clothes conditions: an actor suit and a working uniform. The reconstructed motion results have good agreement with those with X-ray medical judgments. And the load bearing function was analyzed the low-flexion posture under a static load condition using a non-linear finite element analyses of the knee joint. When the medial collateral ligament was removed the knee joint ceased the function as load bearing at applied loads. And the minimum principal stress value of the other ligaments increased compared with that in the normal knee joint.研究種目：基盤研究(C); 研究期間：2008～2010; 課題番号：20560247; 研究分野：工学; 科研費の分科・細目：機械工学・知能機械学・機械システ