Modeling of kinematic hardening at large biaxial deformations in pearlitic rail steel
Artikel i vetenskaplig tidskrift, 2018

Using an Axial-Torsion testing machine, pearlitic R260 steel specimens are twisted until fracture under different axial loads. A well established framework for finite elastoplasticity with kinematic hardening is used to model the deformation of the specimens. In particular, we evaluate the ability of different kinematic hardening laws to predict the observed biaxial load versus displacement response. It is found that the combination of Armstrong-Frederick dynamic recovery and Burlet-Cailletaud radial evanescence saturation is efficient even for the large strains achieved in this study. The results are less conclusive on the appropriateness of replacing the Armstrong-Frederick with an Ohno-Wang type of kinematic hardening law.

large ratcheting strains

plastic-deformation

international journal of plasticity

1986

finite-element-analysis

v2

v11

carbon-steel

critical state

crostructure and processing

mechanical-properties

Mechanics

v445

Axial-Torsion

behavior

p237

international journal of plasticity

cyclic plasticity

FORMATION (NANOSPD6)6th International Conference on Nanomaterials by Severe Plastic

aboche jl

dynamic recovery

Finite strains

1995

Multiaxial

p295

high-pressure torsion

p149

Pearlitic steel

lobelle p

Biaxial

Författare

Knut Andreas Meyer

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Magnus Ekh

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Johan Ahlström

Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

International Journal of Solids and Structures

0020-7683 (ISSN)

Vol. 130 122-132

Ämneskategorier

Maskinteknik

DOI

10.1016/j.ijsolstr.2017.10.007