Analysis of profile ring rolling for rings having V-groove of trapezoidal protrusion by the upper-bound elemental technique

사다리꼴 모양의 돌기나 V형 홈을 갖는 형상 환상압연에 대한 UBET 해석

To diversify the area of application of UBET to the analysis of ring rolling which produces rings having more complex cross-sectional configuration, an element of triangular cross-section has been introduced and the corresponding kinematically admissible velocity field has been derived while considering the material flow between neighboring elements. The theoretical perdictions in roll torque and profile formation show good agreement with the experiments. The effect of process parameters such as feed rate and taper angle of the roll groove has been discussed.