A penalty rigid-plastic finite element method for prediction of stress distributions at the tool and workpiece interfaces in metal forming

소성가공중 금형과 가공체의 접촉면에 작용하는 응력의 예측을 위한 벌칙 강소성 유한요소법

A penalty finite element method has been developed for accurately predicting stress distributions at the tool-workpiece interfaces. The basic formulation is described, with the emphasis on the algorithm to deal with the normal stress and the frictional stress at the interface. Comparison with the experimental data and the theoretical solutions found in the literature is made for the forming processes selected.