Selection of Constitutive Material Model for the Finite Element Simulation of Pressure-Assisted Single-Point Incremental Forming

Pressure-assisted single-point incremental forming (PA-SPIF) is one of the emerging techniques for sheet metals that have been subject rigorous research over past two decades. Understanding its mechanisms and capabilities growing as a result. Open gaps are still present in material constitutive modelling accurate numerical predictions finite-element simulations characteristics localised deformation behaviour SPIF different from those conventional metal forming. The current investigation focused on comparison three models analysis PA-SPIF cold-rolled, dual-phase steel DP600. Experimental trials using fluid pressures showed good agreement with simulation results discrepancies deformed blank thickness shape geometry 3–11% 10–21%, respectively. Within tested materials range parameters, fracture-forming-limit diagram (FFLD) model was identified to be superior accord experiments.