Keywords
Optimization
Barlat parameters
hardening exponent
plastic-strain ratio
constant of proportionality. Optimización
parámetros de Barlat
exponente de endurecimiento
relación de deformación plástica
constante de proporcionalidad.
Barlat parameters
hardening exponent
plastic-strain ratio
constant of proportionality. Optimización
parámetros de Barlat
exponente de endurecimiento
relación de deformación plástica
constante de proporcionalidad.
How to Cite
Diosdado De la Peña, J. A., Prieto Juárez, M. A., Fuentes Castañeda, P., Méndez Bautista, H., & Limon Leyva, P. A. (2016). Optimization of Barlat 3 parameter material model with aluminum alloy experimental curves. Acta Universitaria, 26(6), 35–43. https://doi.org/10.15174/au.2016.1134
Abstract
This paper presents computed constants of 3 parameter Barlat material model, hardening coefficient (n), strength coefficient (K) and anisotropic constants (r00, r45, and r90) obtained from tensile test data for sheet type specimens at different rolling direction (0°, 45°, and 90°). These anisotropic parameters from an aluminum alloy sheet are used to feed three parameter Barlat material model in LS-DYNA® software, to generate a file that is required to perform an optimization in LS-OPT® software. Experimental data is used to generate real strain-real stress curves, and are compared with those obtained from LS-DYNA® simulations with optimized parameters, getting a closer curve to experimental data, particularly in plastic zone.