PREDICTION OF DEFORMATION PROPERTIES OF STEEL SHEETS BY NUMERICAL SIMULATION.

Paper presents study results of localised deformation, described by FLC, at different deformation schemes. FLC are used for fracture prediction at crash and formability tests in automotive industry. In experiments were used two types of steel sheets: hot deep galvanized steel sheet DX54D and austenitic stainless steel DIN 1.4301. Limit localised deformations were researched by experimental tests using CCD video camera recording and numerical simulation. Deformation schemes were modelled on tensile test specimens by different notch radii (R5, R10, R17.5, R25). Reached forming limit curves from experiment and simulation were compared. There was shown good agreement of FLC experimentally measured and computed by numerical simulation. [ABSTRACT FROM AUTHOR]