プリプレグによる複合材立体構造の成形性シミュレーション

抄録

Recently composite materials including CFRP have been widespread as structures for aircraft and automobiles to reduce their weight. Each part can be formed into a desired shape by laminated prepregs, but there are various problems in the process. One of them is forming defect. In order to reduce these forming defects such as delamination, wrinkle and interlayer slip, it is necessary to predict them beforehand by analysis or experiment under appropriate conditions. In this study, we investigated the value of interlaminar stress which does not cause delamination by observation of simple forming result in PAM-FORM. And we concluded that 0.75 MPa is the critical stress between layers in this model.