International Conference on Materials, Processing and Product Engineering: Estimation of Material Parameters in Nonlinear Hardening Plasticity Models and Strain Life Curves for CuAg Alloy
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2015. 68 Abstract from MPPE 2015, Leoben, Austria.
Research output: Contribution to conference › Abstract › peer-review
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TY - CONF
T1 - International Conference on Materials, Processing and Product Engineering
T2 - MPPE 2015
AU - Stanojevic, Aleksandar
AU - Srnec Novak, Jelena
AU - Benasciutti, Denis
AU - De Bona, Francesco
AU - De Luca, Andrea
AU - Raffaglio, Yuri
PY - 2015/11/3
Y1 - 2015/11/3
N2 - This work investigates the cyclic response and low-cycle fatigue behaviour of a CuAg alloy used in crystallizer for continuous casting lines. Therefore isothermal strain-based fatigue tests are first performed on CuAg specimens at different temperature levels (20 oC, 250 °C, 300 °C). The evolution of stress-strain loops recorded during the cyclic tests is used for the parameter identification of several nonlinear hardening models (nonlinear kinematic, nonlinear isotropic). Cyclic stress-strain data from experiments are compared with results from numerical simulations with the identified material parameters, showing a satisfying agreement. Critical examination of numerical results from different models is also performed. Finally, the strain-life fatigue curves estimated from experimental data are compared with approximate strain-life equations (Universal Slopes Equation, 10% Rule) which are obtained from simple tensile tests. The material parameters determined in this work can conveniently be used as inputs in a elasto-plastic finite element simulations of a crystallizer.
AB - This work investigates the cyclic response and low-cycle fatigue behaviour of a CuAg alloy used in crystallizer for continuous casting lines. Therefore isothermal strain-based fatigue tests are first performed on CuAg specimens at different temperature levels (20 oC, 250 °C, 300 °C). The evolution of stress-strain loops recorded during the cyclic tests is used for the parameter identification of several nonlinear hardening models (nonlinear kinematic, nonlinear isotropic). Cyclic stress-strain data from experiments are compared with results from numerical simulations with the identified material parameters, showing a satisfying agreement. Critical examination of numerical results from different models is also performed. Finally, the strain-life fatigue curves estimated from experimental data are compared with approximate strain-life equations (Universal Slopes Equation, 10% Rule) which are obtained from simple tensile tests. The material parameters determined in this work can conveniently be used as inputs in a elasto-plastic finite element simulations of a crystallizer.
KW - Constitutive Modelling
KW - Parameter optimization
KW - Testing methods
M3 - Abstract
SP - 68
Y2 - 3 November 2015 through 5 November 2015
ER -
