Fast Parallel Computation Algorithm in Application to Simulation of Semi-Solid Steel Rolling and Inverse Analysis of its Properties

The contribution deals with the problem of development of a fast computation system allowing forcorrectinterpretation of results of experiments concerningmechanical properties of semi-solid steel. Accurate computer simulation of steel deformation at very high temperature requires information about plastic properties of the material. One of the most important properties of steel subjected to deformation is the stress-strain relationship - yield stress curve. Unlike low temperature tests, deformation of steel samples in temperaturesover 1400 degrees C causes strain, stress and temperature fields that are strongly inhomogeneous from the physical point of view. Correct interpretation of such experimental results requires inverse analysis based on numerical models providing accurate and fast computation. Similar requirementsapply tosimulation of the integrated casting and rolling process of semi-solid steel in a sequence of passes. This problem is the main subject of the current paper. Some globally unique example results of the analysis are presented, as well.