Targeted residual stress generation in single and two point incremental sheet forming (ISF)

Abstract The mechanical properties and the operating life of a formed component are highly dependent on residual stress state. There is always high magnitude stresses in components by incremental sheet forming (ISF) due to localized deformation mechanism. Hence, thorough understanding generation ISF necessary. This study investigates mechanism for two process variants ISF, i.e., Single Point Incremental Forming (SPIF) Two (TPIF). used control targetedly generate improve part performance. In this regard, state truncated cone geometry manufactured using SPIF disc springs TPIF was experimentally analyzed. Validated numerical models both were developed detail. such that tool contact side develops tensile non-contact undergoes compressive stresses. step-down variation fatigue strength cones SPIF. For TPIF, different strategies analyze role major parameters. pre-dominantly directions motion. process, it shown can be beneficially utilized components.