Memorization and other Transient Effects of ST52 Steel and its FE Description

Radim Halama; Frantisek Fojtik; Aleksandros Markopoulos

doi:10.4028/www.scientific.net/AMM.486.48

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Memorization and other Transient Effects of ST52 Steel and its FE Description
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 486Memorization and other Transient Effects of ST52...

Memorization and other Transient Effects of ST52 Steel and its FE Description

Abstract:

This contribution presents main results of experimental tests realized on smooth specimens made of ST52 steel under strain controlled uniaxial cyclic loading and compares these results with numerical simulations performed using a modified Chaboche model by finite element method. The effects of NonMasings behavior, memorization, cyclic hardening/softening and mean stress relaxation have been studied at room temperature. The experiments were realized on the reconstructed hydraulic fatigue testing machine INOVA 100 at the Laboratory of modern materials testing and defectoscopy of VŠB-TU Ostrava. Developed mixed hardening material model includes a memory surface stated in stress-space, which makes possible to significantly improve prediction of effects studied.

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Periodical:

Applied Mechanics and Materials (Volume 486)

Pages:

48-53

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.486.48

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Online since:

December 2013

Authors:

Radim Halama*, Frantisek Fojtik, Aleksandros Markopoulos

Keywords:

Cyclic Plasticity, Finite Element Method (FEM), Mean Stress Relaxation, Ratcheting

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References

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