Finite element prediction of deformation mechanics in incremental forming processes

摘要: This thesis presents new insights into gaps in the knowledge of conventional spinning and single point incremental forming (SPIF) processes through numerical modelling their deformation mechanics. The mechanics is investigated by constructing finite element (FE) models a cylindrical cup using both dual roller passes. A design experiments (DOE) technique used to generate an experimental plan based on all relevant process parameters, followed analysis variance (ANOVA) approach which then determine most critical parameters. results indicated that area plastic taking place changes during subsequent SPIF novel dual-level model truncated cone. first-level FE validated against data second level investigate modes sheet thickness. DOE ANOVA techniques are influence different parameters predicted through-thickness shear. Simple strategies applied reduce geometrical errors without affecting flexibility. second-level shear important component mechanism SPIF.