RT - Journal Article T1 - Mechanism of Improvement of Die Corner Filling inPulsating Hydroforming of Tube in a Box-Shape Die JF - mdrsjrns YR - 2009 JO - mdrsjrns VO - 9 IS - 1 UR - http://mme.modares.ac.ir/article-15-8912-en.html SP - 121 EP - 133 K1 - Tube Hydroforming K1 - Pulsating Pressure K1 - Finite element simulation K1 - Improvement of Die Corner Filling AB - In this study, pulsating hydroforming of tube in a box die is simulated using the three dimensional finite element method to investigate the mechanism of improvement of the corner filling. In addition, the results obtained from the simulation are compared with experimental observations, and the validity of the simulation results is verified. Based on a better understanding of the mechanism of improvement of the corner filling, a new pulsating pressure path is proposed to increase the corner filling. It has been shown that the proposed pulsating pressure path is more effective in increasing the corner filling of the box shape tube hydroforming process. LA eng UL http://mme.modares.ac.ir/article-15-8912-en.html M3 ER -