<論文>損傷力学的手法によるFRP積層板の剛性低下予測

概要

論文の詳細を見る
An analytical model for predicting matrix crack induced stiffness reduction of FRP laminates with off-axis plies is developed. The constitutive equations for a cracking ply are firstly proposed under an assumption of equivalence between a cracking ply and a work-softening material. Then they are incorporated into the classical lamination theory to describe crack evolution in FRP laminates. Energy release rate is adopted as the criterion for crack formation, and the number of cracks is predicted by dividing cumulative released energy by released energy due to single crack formation. With the predicted number of cracks, variation of laminate stiffness with crack density is evaluated. The uniaxial tension test is performed on GFRP [0/θ_n/0]laminates, and corresponding theoretical predictions were made. The agreement between predictions and experimental results is fairly well.
神戸市立工業高等専門学校の論文
2000-03-01