In previous studies based on indentation processes, the application of the Upper Bound
Theorem (UBT) Modular Model by means of Triangular Rigid Zones (TRZ) has being analyzed.
These studies were carried out with plane strain conditions and rigid-perfectly plastic material.
One of the advantages of working with the modular procedure of the UBT, is the possibility of
the introduction of the different parameters that take place in the process. This factors
introduction allows the enrichment of the study, bringing the research nearest to the reality of
the processes. Therefore, in order to approach the method to a real indentation process, the
introduction and study of the material hardening is inevitable. Furthermore, thanks to the new
incremental processes that are being developed, the indentation processes are becoming
important in the current industry.