1749 塑性体積膨張を伴うゴム粒子混合ポリマーブレンドの変形機構とそのモデル化(S16-5 複合材料(3),S16 先進材料の強度・機能評価とメゾメカニックス)

概要

論文の詳細を見る
In the present study, a constitutive model for a rubber-toughened polymer blend, which accounts for an exact macroscopic volume change behavior, is proposed. In rubber-toughened polymer blends, microscopic cavitation within the rubber particles is known to contribute greatly the fracture toughness. Such cavitation results in the volume expansion of the material. In the proposed model, a plastic potential function, which is independent of the yield function, is introduced to represent accurately the volume change behavior in the material. Material parameters in the model are determined with different kinds of experiments. Moreover, the efficiency of the proposed model is evaluated through a finite element simulation of neck propagation in a tensile specimen and its comparison to an experimental result.
社団法人日本機械学会の論文
2005-09-18