均質化理論による平織GFRP積層板の弾-粘塑性変形解析 : 解析領域の検討

概要

論文の詳細を見る
In this study, a method for reducing the domain of analysis is developed for the homogenization analysis of plain-woven laminates. To this end, by assuming the in-phase and out-of-phase laminate configurations of plain fabrics in laminates, it is shown that the internal structures of the laminates have point-symmetry. Then, the point-symmetry is utilized to the boundary condition for unit cell problems, reducing the domain of analysis to 1/4 and 1/8 for the in-phase and out-of-phase laminate configurations, respectively. Using the present method, the in-plane elastic-viscoplastic deformation of plain-woven GFRP laminates is analyzed. Moreover, the in-plane uniaxial tensile tests of plain-woven GFRP laminates at a constant strain rate are performed at a room temperature. It is thus shown that the present method successfully predicts the in-plane elastic-viscoplastic behavior of plain-woven GFRP laminates. It is also shown that the laminate configurations of plain fabrics have an influence on the viscoplastic behavior of the laminates.
一般社団法人日本機械学会の論文
2005-11-25