Flow stress under cyclic deformation conditions modelling possibilities

Paulina Graca , Krzysztof Muszka, Janusz Majta

AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer,Science, Mickiewicza 30, 30-059 Kraków, Poland.

DOI:

https://doi.org/10.7494/cmms.2013.3.0460

Abstract:

This paper presents and discusses some aspects of the computer modelling of mechanical response of the high strength low alloy steels subjected to deformation processes where significant cyclic strain path changes exist. The proper choice of the work hardening model for the cyclic plastic deformation is essential for predicting the inhomogeneities occurring during metal forming. Aim of the current work is to discuss the differences between various hardening models with respect to their capabilities in capturing complex deformation models. Application of such models to simulate various simple plastometric tests, such as cyclic compression/tension and cyclic torsion are presented. Finally, based upon results obtained in both of the analyzed simulations, conclusions regarding the possibilities of potential application of the investigated tests in the identification process of hardening model parameters, trough the inverse analysis, are drawn.

Cite as:

Graca, P., Muszka, K., & Majta, J. (2013). Flow stress under cyclic deformation conditions modelling possibilities. Computer Methods in Materials Science, 13(3), 375 – 381. https://doi.org/10.7494/cmms.2013.3.0460

Article (PDF):

Keywords:

Dislocation density, Combined hardening model, Inverse analysis, Finite element method, Strain path change

References: