S0302-1-1 3次元局所ハイブリッド法による曲げ構造物の応力解析(実験力学における計測・解析法の新展開(1))

概要

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Most measurement by experiment is about a structure surface and it is dramatically difficult to measure the stress state inside a structure. Although the stress analysis of a big structure is possible by the 3-D finite element method, great time and labor are needed. In this study, we examined whether the 3-D local hybrid method could apply to the structure subjected to bending. The digital image correlation (DIC) method was adopted as measurement of the surface displacement data needed for the analyses by the 3-D local hybrid method. Although DIC can measure the in-plane displacement in sufficient accuracy, it cannot measure correctly the in-plane displacement accompanied by the out-of-plane displacement. First, the influence of the out-of-plane displacement on the measurement accuracy of DIC was evaluated and how to eliminate the influence was examined. Secondly, whether the 3-D local hybrid method could estimate an internal stress state of a cantilever was examined.
一般社団法人日本機械学会の論文
2009-09-12