Experimental validation of the new modular application of the upper bound theorem in indentation

Abstract

Nowadays, thanks to the new manufacturing processes, indentation is becoming an essential part of the new arising processes such as the Incremental Forming Processes. This work presents the experimental validation of the analytical model developed for an indenta tion-based process. The analytical model is originated from the Upper Bound Theorem ap plication by means of its new modular distribution. The modules considered are composed of two triangular Rigid Zones each. The experimental validation is performed through a series of indentation tests with work-pieces of annealed aluminium EN AW-2030 and punches of steel AISI 304, under plane strain conditions. The results are compared with the ones ob tained from the application of this new modular distribution of the Upper Bound Theorem, showing a good approximation and suitability of the model developed for an indentation based process