Numerical modeling of the behavior of the leagues 60Sn-40Pb and Ti-6Al-4V when submitted to an essay of static fluid expansion (bulge test) in superplasticity condition

• Grant number: 13/20881-1
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: February 01, 2014
• End date: January 31, 2015
• Field of knowledge: Engineering - Mechanical Engineering - Manufacturing Processes
• Principal Investigator: Gilmar Ferreira Batalha
• Grantee: Pedro Pinto Coelho Neto
• Host Institution: Escola Politécnica (EP). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

The superplastic forming process (or just SPF) consists in a method of manufacturing viable and efficient, already used by the aerospace industry, automotive and biomedical for manufacturing parts with complex shapes in a few steps. Superplasticity is the ability of some metals and alloys to display long elongations. The finite element method (FEM), when compared with experimental results showed good accuracy and convenience for the analysis of the mechanical behavior of such materials during superplastic forming process. The convenience of the MEF is due to the fact that this method have a low cost and provides a reduction in the number of experimental tests. The research will have four steps. First a detailed study of the properties of 60Sn-40Pb alloy and Ti-6Al-4V and of the SPF. Later will be implemented a computational model and then this model will be used for simulation of a static fluid expansion test (or "bulge") through the FEM method using the software ABAQUS for the simulation of the process for the two alloys studied. Finally an analysis will be made through a comparison of the results already known in the literature and those obtained in the work, confirming or not the accuracy of the simulation using the FEM method for the SPF. (AU)