Prediction of failure in tube hydroforming process using a damage model |
| |
Authors: | G H Majzoobi F Freshteh Saniee A Shirazi |
| |
Affiliation: | 1.Mechanical Engineering Department,Bu-Ali Sina University,Hamadan,Iran |
| |
Abstract: | In tube hydroforming process (THP), two types of loading, internal pressure and axial feeding and in particular the combination
of them, are needed to feed the material into the cavities of the die to form the workpiece into the desired shape. If the
variation of pressure versus axial feeding is not determined properly, the workpiece may be buckled, wrinkled or burst during
THP. The appropriate variation is normally determined by experiment which is expensive and time-consuming. In this work, numerical
simulation using Johnson-Cook models for predicting the elasto-plastic response and the failure of the material are employed
to obtain the best combination of internal pressure and axial feeding. The numerical simulations are examined by a number
of experiments conducted in the present investigation. The results show very close agreement between the numerical simulations
and the experiments, suggesting that the numerical simulations using Johnson-Cook material and failure models provide a valuable
tool to examine the different parameters involved in THP. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|