Parameter identification and modeling of large ratcheting strains in carbon steel

Artikel i vetenskaplig tidskrift, 2006

In this paper the parameter identification procedure of a material model for large multiaxial ratcheting strains, as proposed in Johansson et al., (2005), Int J Plasticity 21, 955-980, is demonstrated. In particular, experimental data for uniaxial and biaxial ratcheting of carbon steel are considered. The biaxial experimental data are from Jiang and Sehitoglu, (1994), Int J Plasticity 10, 579-608. The material parameters are identified by means of optimization algorithms, and a sensitivity analysis is performed.