Within the scope of this study, effects yield and hardening criteria used in forming simulations on part geometric dimensions were investigated. As material 0.8 mm thick DC04 is used. In results compared using Hill-48 Barlat-91 experimental flow curve, Hockett-Sherby, Ludwig Hollomon curve models. The studies carried out Simufact Sheet Metal Form software. Although all models studied because di...

Abstract In sheet metal forming simulations, the yield functions are usually calibrated based on experimental data, and validated by comparing modelled measured r-values (in more advanced models) stresses along various in-plane directions. The fitted function should ideally reproduce (or interpolate) all values used for fitting. However, this requirement does not guarantee accurate results in a...

A recent development in sheet metal forming industry is the application of tailored blanks: blanks prepared from separate pieces of sheet material, welded together prior to the forming process. The pieces of sheet material can have different properties, enabling weight reduction of components, corrosion resistance using cathodic protection or the possibility to create local weak spots, resultin...

In metastable austenitic stainless steels, strain-induced martensitic transformation during plastic deformation enhances work hardening of the material, increasing its strength and in some cases also ductility.1,2) The presence of α’-martensite, however, may increase the susceptibility of these materials to hydrogen embrittlement phenomena, for example delayed cracking.3–6) Delayed cracking can...