非線形均質化理論に基づく骨組要素を用いたセル構造材料のマルチスケール解析

概要

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Cellular materials consist of lattice-like microstructures are usually treated as continua which have equivalent macroscopic mechanical properties for structural analysis. Whereas the linear theory that estimates the equivalent properties for composites include cellular materials is mature, the theory and the methodology for the nonlinear analysis of cellular materials remain active fields of research. Then, in this context, we apply the homogenization method, which utilizes multiple scales and realizes macro and micro coupling multi-scale analysis, to cellular materials. Frame elements are employed in the multi-scale analysis based on the homogenization method since it is rational from computational viewpoint for discretizing the lattice-like microstructure. Finally, we show some numerical examples of the nonlinear multi-scale analysis of cellular materials in order to validate our multi-scale analysis.
社団法人日本機械学会の論文
2003-04-25