A co-simulation approach based on close-loop feedback control for aluminum alloys profile extrusion

The conventional simulation for aluminum alloys profile extrusion (AAPE) is an open-loop control system in which the control parameters cannot be adjusted during the simulation process. To address this issue, we use the novel co-simulation method by coupling two kinds of code: using Abaqus code to model the extrusion process and a Python code to model the control unit. Then, a fully coupled feedback closed-loop co-simulation of AAPE is presented in this work. By using the numerical model of the closed-loop control system, the profile outlet temperature is controlled to be balanced and uniform. Moreover, a gradient-heated aluminum billet is simulated in this paper. For this special scenario, it is important to model the AAPE control system by considering the interaction of the die with the aluminum alloys components, resulting in a more accurate representation.