Strain path dependency in incremental sheet-bulk metal forming

• DOI: 10.1007/s12289-020-01537-0
• Publication Date: 2020-01-17T11:02:52Z
• Authors: S. Wernicke; M. Hahn; G. Gerstein; F. Nürnberger; A. E. Tekkaya
• Keywords: Quasistatic process; Strain hardening exponent; Incremental sheet forming; Hardening (computing)

Abstract Incremental sheet-bulk metal forming (iSBMF) enables the manufacture of functional lightweight components featuring a load-adapted shape with high material efficiency. The flexibility incremental process allows for modification strain path through adjustment tool motion while maintaining final product geometry. These modifications generate both different hardening and damage evolution. In this paper, numerical experimental investigation paths is carried out to identify their impact on resulting load capacity gears. experiments quasistatic gears it validated that showing reduced potential leads 50% higher compared most unfavorable path. Moreover, all investigated present changes have be taken into account in modeling iSBMF processes. Therefore, new approach characterization under multiple effective plastic tested. Compared characterized monotonically flow curve, decreases deviation force prediction by around 80% without increasing calculation time.