Cyclic plastic deformation of rails in rolling/sliding contact –quasistatic FE calculations using different plasticity models
Artikel i vetenskaplig tidskrift, 2019

A quasistatic FE model for calculating plastic deformations of railway rails caused by rolling/sliding wheels is introduced. A method for transferring 3D loads to 2D rolling models is shown, and its limitations are demonstrated. The necessary mesh size and rolling length are derived for an efficient modelling of many cycles. The model uses three different material models for the rail: a Chaboche-type model, and two hyperelasto-plastic models. Main results of the model are accumulated equivalent plastic strains PEEQ and plastic longitudinal displacements ux. For similar loads, 2D models calculate severely higher PEEQ and ux values than the 3D models. Calculations are done for up to 1400 cycles and differences in the modelling of the rail material are shown.

Ratchetting

Rolling contact fatigue

Shear deformation

Finite element modelling

Författare

Martin Pletz

Montanuniversität Leoben

Knut Andreas Meyer

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

David Künstner

Voestalpine Schienen GmbH

Stephan Scheriau

Voestalpine Schienen GmbH

Werner Daves

Materials Center Leoben Forschung GmbH

Montanuniversität Leoben

Wear

0043-1648 (ISSN)

Vol. 436–437 202992

In2Track-2

Europeiska kommissionen (Horisont 2020), 2018-11-01 -- 2021-10-31.

Styrkeområden

Transport

Materialvetenskap

Ämneskategorier

Teknisk mekanik

Infrastruktur

C3SE (Chalmers Centre for Computational Science and Engineering)

DOI

10.1016/j.wear.2019.202992

Mer information

Senast uppdaterat

2019-10-18