Investigation of modified bi-layered tube hydroforming by pulsating pressure
In recent years, tube hydroforming has been applied in automobile and airplane industries, to decrease weight. In general, the determination of internal pressure path is a key factor in improving the formability in tube hydroforming. One of the effective methods in improving the tube hydroforming is using the pulsating internal pressure path. In this research, hydroforming of bi-layered tubes under pulsating pressure in x-shaped die is simulated by means of three dimensional finite element method. Some numerical results were compared with experimental results and show good correlation. Influence of pulsating pressure on the thickness and stress distribution have been also studied. It was shown that pulsating pressure improves the formability in hydroforming of bi-layered tubes via continues and gradual removing returnable wrinkling which is caused by a low pressure in this process. In addition, effect of some key parameters such as friction and die corner filling have been investigated.
Hydroforming Bi-layered tube Pulsating Pressure Numerical simulation
Mohsen Loh-Mousavi Amir Masoud Mirhosseini Ghasem Amirian
Department of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University,Isfahan, Iran Department of Mechanical Engineering, Yazd University, Yazd, Iran
国际会议
Fourth International Conference on Advanced Design and Manufacturing(第四届先进设计与制造国际会议)
昆明
英文
5-8
2011-09-21（万方平台首次上网日期，不代表论文的发表时间）