Modelling of forward extrusion process for hollow elements on base of nonlinear adaptive finite element method

Abstract

Adaptive strategies are nowadays considered a standard tool in practical finite element computations. For any problem, adaptivity is an essential tool to obtain numerical solutions with a controlled accuracy. This is tool, which offer solutions that follow disruption within continuum structure with possibility of handle process and stress – strain analysis. For some problems typically in the nonlinear domain adaptive strategies are even more fundamental, without them a finite element solution simply cannot be computed. This is the case, for instance, with problems in nonlinear solid mechanics applied on extrusion technology of aluminium in die area.