Original scientific paper

https://doi.org/10.17559/TV-20140828211548

Monte Carlo simulation of measurement uncertainty in modified hydraulic bulging determination of flow stress curve

Petar Piljek orcid.org/0000-0003-3328-1497 ; Department of Technology, Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, 10002 Zagreb, Croatia
Biserka Runje orcid.org/0000-0002-7786-0864 ; Department of Quality, Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, 10002 Zagreb, Croatia
Zdenka Keran orcid.org/0000-0001-7894-6590 ; Department of Technology, Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, 10002 Zagreb, Croatia
Marko Škunca ; Alstom, Dubrovačka 45, 10312 Predavec, Croatia

Abstract

In this paper an estimation of measurement uncertainty in determining the flow stress curve by modified hydraulic bulging was carried out. Modified hydraulic bulging is a newer method of the stress-strain diagram acquisition. The method has been derived from the hydraulic bulge test. The flow stressstrain curves were established for an aluminium sheet on an experimental apparatus designed for both methods. The assumption of the membrane stress state was used and the flow rule was determined, which was necessary for establishing the flow stress-true strain curve. The comparison between the experimentally obtained curve and standard true stress – true strain curve from literature is showed on a diagram. The estimation of measurement uncertainty was performed using the Monte Carlo simulation.

Keywords

flow stress curve; measurement uncertainty; modified hydraulic bulging; Monte Carlo simulation

Hrčak ID:

183019

URI

https://hrcak.srce.hr/183019

Publication date:

15.6.2017.

Article data in other languages: croatian

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