단조 후 소재 절삭에 따른 탄성회복 변형의 유한요소예측

Abstract

In this paper, finite element prediction of deformation of material due to springback after material removal by an axi-symmetric forging fabrication at room temperature is conducted. An elastoplastic finite element method is employed considering die plastic deformation. The predictions of a springback analysis conducted after the final stroke of an axi-symmetric cold forging process containing residual stresses are utilized to be mapped onto the final material after the material removal. It is assumed that material removal occurs at an instant, i.e., all the material to be removed disappears at once. The predictions are compared with experiments, revealing strong qualitative agreement.