円筒再絞り加工の数値シミュレーションによる再絞り比の算出法について

概要

論文の詳細を見る
A determination method for the limiting redrawing ratios and the number of operations has been proposed by analyzing the redrawing process of cylindrical shells from flat circular blanks by the use of the elementary theory of plasticity. The limiting redrawing ratios were calculated using the fracture criterion based on the plastic instability under the plane strain tension of the cup wall. Theoretical results on the variations of the redrawing ratios with the profile radius, the blank thickness, the frictional force, the blankholder load and the strain-hardening exponent were presented using a developed computer program aimed at rationalizing, planning and simulating the redrawing process. It was shown that the present method of determining the redrawing ratios was effective, by comparing the predicted values with the usual recommended values based on the experience of many years of skilled labour.
一般社団法人日本機械学会の論文
1986-08-25