Email the author VARIABILITY OF THE MECHANICAL PARAMETERS OF SHEET METALS
Abstract
In this paper the variability of the mechanical parameters of a DC04 [1] steel sheet (0.85 mm thickness) has been studied. In order to analyze the density distribution functions of the mechanical parameters, a total number of 113 uniaxial tensile tests have been performed. Some linear relationships between the parameters have been established. Based on the dispersion of the stress-strain curves, the mechanical coefficients of the Swift hardening law have been determined using a new method. Using this experimental data, the forming limit band has been calculated based on the Monte Carlo technique. In order to determine the forming limit band, a fully implicit Marciniak-Kuczynski model has been used.
Key words: Sheet metal forming, Forming Limit Band, Monte Carlo Analysis.Full Text:
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