Optimal design of extrusion dies using hp-adaptive finite element model

摘要

We present an algorithm for optimal design of extrusion dies using an hp-adaptive finite element model and shape optimization based on an efficient response surface methodology. ^hp-adaptive finite element analysis is used to obtain accurate flow solutions. ^Starting with an initial guess for the die geometry, we iteratively solve the fluid flow and optimization problems to produce a die design that satisfies the objective function and constraints. ^Results for a 2D and 3D extrusion problem are presented to show the robustness of the approach and its effectiveness in simplifying the method of die design. ^The advantage of this approach is that, in addition to removing the guesswork from mesh generation, it eliminates the time consuming trial and error experiments in extrusion die design. ^The present research also highlights another use of the response surface methodology in multidisciplinary design optimization. ^(Author)