International Conference on Materials, Processing and Product Engineering: Estimation of Material Parameters in Nonlinear Hardening Plasticity Models and Strain Life Curves for CuAg Alloy

Aleksandar Stanojevic, Jelena Srnec Novak, Denis Benasciutti, Francesco De Bona, Andrea De Luca, Yuri Raffaglio

Publikation: KonferenzbeitragAbstract/ZusammenfassungBegutachtung


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.
PublikationsstatusVeröffentlicht - 3 Nov. 2015
VeranstaltungMPPE 2015 - Montanuniversität Leoben, Leoben, Österreich
Dauer: 3 Nov. 20155 Nov. 2015


KonferenzMPPE 2015


  • Constitutive Modelling
  • Parameter optimization
  • Testing methods

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