541 一方向CFRPのひずみ速度に依存する非線形挙動の引張・圧縮非対称性とその力学的モデル化(OS7-2 微視構造を有する材料の変形と破壊,OS7 微視構造を有する材料の変形と破壊)

概要

論文の詳細を見る
Off-axis compressive deformation behavior of a unidirectional CFRP laminate at high temperature and its strain-rate dependence in a quasi-static range are examined for various fiber orientations. By comparing the off-axis tensile and compressive behaviors at an equal loading rate, the effect of loading direction on the nonlinearity and rate-dependence of the off-axis deformation is elucidated. Then, formulation of a phenomenological viscoplasticity model that can describe the nonlinear rate-dependent behavior as well as its tension-compression asymmetry of unidirectional composites under off-axis loading in a unified manner is attempted. Validity of the proposed viscoplasticity model is evaluated on the basis of comparison between predicted and experimental results.
一般社団法人日本機械学会の論文
2007-10-24