Voskaniants

The paper deals with 3-D finite element analysis (FEA) of different metal forming processes in terms of Eulerian description of continuun motion. Three technological processes being characterized by high plastic strain ratio have been researched. The processes analyzed are: the piercing of solid cylindrical billet on a helical piercing mill; the high-reduction pendulum rolling of a flat bar; the lengthwise rolling of a rectangular bar billet in profiled roll pass of a heavy merchant mill. As a result of computer simulation the time-dependent stress and strain fields and deformed shape of the billets during the rolling process were obtained. Power consumption of the processes studied was estimated too. Eulerian problem formulation has allowed not only to solve a problem of high plastic deformations, but also to analyze the phenomena of intense mass transfer without finite elements grids distortion.

The paper deals with 3-D finite element analysis (FEA) of solid billet helical rolling process in terms of Eulerian description of continuun movement. The strained and stressed state of solid copper billet under 3-roll cold helical rolling process was investigated. The metal flow during the rolling process was estimated by using lengthwise and transversal rods specially implanted into the finite element model of the billet. As a result of computer simulation the time-dependent stress and strain fields and deformed shape of the billet and implanted rods were obtained. Power consumption of the process was estimated too. The analysis results were compared to the experimental ones and to the results of FEA in terms of Lagrangian finite element modelling problem definition.