Strain Range Dependent Cyclic Hardening of 08Ch18N10T Stainless Steel-Experiments and Simulations.

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2019
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Abstract
This paper describes and presents an experimental program of low-cycle fatigue tests of austenitic stainless steel 08Ch18N10T at room temperature. The low-cycle tests include uniaxial and torsional tests for various specimen geometries and for a vast range of strain amplitude. The experimental data was used to validate the proposed cyclic plasticity model for predicting the strain-range dependent behavior of austenitic steels. The proposed model uses a virtual back-stress variable corresponding to a cyclically stable material under strain control. This internal variable is defined by means of a memory surface introduced in the stress space. The linear isotropic hardening rule is also superposed. A modification is presented that enables the cyclic hardening response of 08Ch18N10T to be simulated correctly under torsional loading conditions. A comparison is made between the real experimental results and the numerical simulation results, demonstrating the robustness of the proposed cyclic plasticity model.
Reference Key
fumfera2019strainmaterials Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Fumfera, Jaromír;Halama, Radim;Procházka, Radek;Gál, Petr;Španiel, Miroslav;
Journal Materials (Basel, Switzerland)
Year 2019
DOI E4243
URL
Keywords
Finite Element Method experiments low-cycle fatigue austenitic steel 08ch18n10t cyclic hardening cyclic plasticity

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