On the Utilization of Circle Grid Analysis in Thin-walled Forming of Tubes: Experimental and Numerical Evaluation. (2017)

• Record Type: Journal Article
• Authors: Centeno, G; Silva, M.B.; Alves, L.M.; Vallellano, C.; Martins, P.A.F.
• Is Part Of: Procedia engineering. Volume 207(2017)
• Page Start: 1773
• Page End: 1778
• Publication Date: 2017
• Subjects: Tube forming -- circle grid analysis -- experimentation -- finite element modelling; Engineering -- Congresses; Engineering -- Periodicals; Engineering; Conference proceedings; Periodicals; 620.005
• DOI: 10.1016/j.proeng.2017.10.937
• Languages: English
• ISSNs: 1877-7058

Abstract

Abstract: This paper presents an investigation on different tube forming processes by plastic deformation, including expansion, reduction and inversion of tube ends, using circle grid analysis in order to obtain strain-loading paths in different regions of the principal strain space. The experimental work was carried out on commercial AA6063-T6 tubes and includes independent material characterization by means of tensile, stack compression and instability tests. Finite element modelling of the tube forming processes by means of an in-house computer program gives support to the presentation and allows assessing the overall accuracy, validity and reliability of using circle grid analysis to investigate formability and failure in tube forming.