制御FEMシミュレーションによる三本ロール曲げ加工の最適加工条件の決定

概要

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A method for determining the optimum forming paths in metal forming processes from the finite element simulation is proposed. In this method, the forming path is automatically modified by monitoring the calculated results such as the deforming shape, the stress and strain distributions and the load in each deformation step of the finite element simulation, i. e. , a kind of feedback control. This method is applied to a three-roll bending process to obtain forming paths of rolls for bending plates into desired curvatures. The fuzzy reasosing is used to determine the motion of the top roll by taking account of the effects of the plate thickness and the difference between the desired and the calculated curvatures. It is shown that the decrease in the curvature near both ends of the bent plate is prevented by the use of the present method.
一般社団法人日本機械学会の論文
1994-11-25