薄肉円筒しごき加工の剛塑性有限要素解析および摩擦条件の推定
1990 年 56 巻 521 号 p. 172-179
詳細
1990 年 56 巻 521 号 p. 172-179
The ironing process of thin-wall aluminum cups has been analyzed by using the rigid viscoplastic finite element method. A simple and reliable approximation procedure has been developed for integrating the effective strain that can arise in finite element analyses associated with Eulerian formulation or arbitary Eulerian-Lagrangian formulation. As an inverse solution of the analysis, the mean frictional coefficient μd, on the die surface, and μp, on the punch surface, were also obtained with the ironing punch load and the frictional force acting on the punch which were measured in the corresponding experiments. It is found that the friction values estimated by the slab method agree well with those calculated by the present approach in this case.
