OS0619 重合メッシュ法によるポーラスチタン部材のミクロ応力基準強度予測(先進複合材料の強度・特性評価,オーガナイズドセッション)

概要

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To construct a design methodology for porous titanium mechanical parts, the linearity limit in the load vs. displacement curve has been predicted by the inner microscopic stress calculated by the micro-CT image-based modelling and finite element mesh superposition method. Two L-shaped specimen of porous titanium with different pore diameter, l8Ojsm and 90jim, have been tested. The strain measurement from macroscopic viewpoint by an optical instrument implied that the macroscopic strain/stress fails to predict the linearity limit. In the proposed numerical method, the homogenized macroscopic properties agreed well with the experimental results, and a consistent criterion to predict the linearity limit has been determined for the above two types of porous titanium parts.
2009-07-24