شبيه سازي اكستروژن مقطع با استفاده از روش حد فوقاني

The analysis of plastic flow plays an important role in extrusion process of aluminum sections. The knowledge of how circular initial section of billet changes to final section , will determine more details of extrusion process and has an important role in extrusion die design. In this research material flow in extrusion of "L" section has been investigated by upper bound method. The results show that the plastic flow of material occur in a path that needs minimum energy so it initially changes to an optimum intermediate section and then goes to the "L" final section.