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

Carolina Bermudo; Francisco Martín; María Jesús Martín; Lorenzo Sevilla

doi:10.1371/journal.pone.0122790

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

PLoS One. 2015 Mar 31;10(3):e0122790. doi: 10.1371/journal.pone.0122790. eCollection 2015.

Authors

Carolina Bermudo¹, Francisco Martín¹, María Jesús Martín¹, Lorenzo Sevilla¹

Affiliation

¹ Department of Civil, Material and Manufacturing Engineering, University of Malaga, Malaga, Spain.

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 indentation-based process. The analytical model is originated from the Upper Bound Theorem application 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 obtained 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.

Publication types

Research Support, Non-U.S. Gov't
Validation Study

MeSH terms

Equipment Design
Models, Theoretical*
Surface Properties

Grants and funding

This work was supported by FPU program of the Ministry of Education and University of Malaga – Andalucia Tech Campus of International Excellence. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.