Modeling of kinematic hardening at large biaxial deformations in pearlitic rail steel

• 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.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Teknisk mekanik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Applied Mechanics (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Materialteknik -- Annan materialteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Materials Engineering -- Other Materials Engineering (hsv//eng)

Nyckelord

international journal of plasticity

p295

v445

p149

Multiaxial

lobelle p

Pearlitic steel

international journal of plasticity

Mechanics

Biaxial

aboche jl

cyclic plasticity

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

carbon-steel

1986

critical state

p237

Axial-Torsion

large ratcheting strains

mechanical-properties

high-pressure torsion

finite-element-analysis

dynamic recovery

Finite strains

v2

1995

behavior

crostructure and processing

plastic-deformation

v11

Publikations- och innehållstyp

art (ämneskategori)

ref (ämneskategori)