デジタル画像相関法を用いたPA66ナイロンのネッキング発生後における応力―ひずみ曲線の評価

抄録

An appropriate stress-strain curve after necking for finite element methods was obtained from experiments and finite element methods. Piecewise linear model with 12 pieces was applied to the stress-strain curves were determined by an optimization method. Deformed shapes of specimens were compared.