Rosenschon M, Suttner S, Merklein M (2015)
Publication Type: Journal article
Publication year: 2015
Publisher: Trans Tech Publications Ltd
Book Volume: 639
Pages Range: 385-392
The recent development of new lightweight sheet metal materials, like advanced highstrength steels or aluminium alloys, in combination with an increasing component complexity provides new challenges to the numerical material modelling in the FEM based process design. An auspicious approach to improve the quality of the numerical results - most notably in springback analysis - is the modelling of the so called Bauschinger effect achieved through implementation of kinematic hardening models. Within this paper the influence of the stress state and the level of prestrain on the numerical simulation result of the advanced high strength steel DP-K45/78+Z will be analysed. For this purpose, a parameter identification of the kinematic hardening law according to Chaboche and Rousselier is performed at different pre-strains on the basis of experimental data from tension-compression tests as well as cyclic shear tests. Finally, the identified parameters are validated in a comparison between numerical and experimental results of a cyclic bending test.
Rosenschon, M., Suttner, S., & Merklein, M. (2015). Validation of kinematic hardening parameters from different stress states and levels of plastic strain with the use of the cyclic bending test. Key Engineering Materials, 639, 385-392. https://dx.doi.org/10.4028/www.scientific.net/KEM.639.385
Rosenschon, Martin, Sebastian Suttner, and Marion Merklein. "Validation of kinematic hardening parameters from different stress states and levels of plastic strain with the use of the cyclic bending test." Key Engineering Materials 639 (2015): 385-392.