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FEM numerical simulation of tube backword spinning

ZHAO Teng-lun,HUANG Jian-feng,ZHANG Qing-quan,YAO Jin(School of Manufacturing Science and Engineering,Sichuan University,Chengdu 610065,China)  
By applying FEM numerical simulation technology to spinning process,the reasonable craft parameters can be achieved,the quality of the spinning products can be improved and the expense on trials can be reduced.Based on the elastic-plastic finite element theory,the metal flow in three directions(tangential,radial and axial) and the friction effect were considered generally,and a 3D elastic-plastic finite element model was constructed for the tube spinning process.With the model,the effect of various craft parameters(including the fillet radius of the roller,the diameter of the roller,the feed velocity,the decrement of the thickness per procedure,the modeling angle and exit angle) on the forming results and spring-back were studied respectively.The results show that the fillet radius of the roller,the feed velocity and the decrement of the thickness have a significant effect on the forming results and spring-back.
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