Modellering av termomekaniskt belastade räl- och hjulstål
Forskningsprojekt , 2013 – 2019

Rail and wheel materials are subjected to very high stresses and, in some cases, also to elevated temperatures. The rolling contact loading results in a multiaxial stress state with a combination of compression and shear. The temperature may increase due to frictional heat generated between wheel and rail or generated between wheel and brake blocks at tread braking. This further increases the complexity of the loading situation. Also additional material responses and deterioration phenomena may come into play. The main goal of project MU32 is to improve modelling of the cyclic behaviour of wheel and rail materials subjected to mechanical and thermal loadings. The project will be conducted in close collaboration with project MU28. In MU28 tests will be performed on pearlitic steels at elevated (and possibly varying) temperatures for uniaxial as well as compression–torsional loading. The resulting knowledge on how the material behaves in realistic loading situations can be used in the current project to formulate, calibrate and validate material models. The project will also interact with project SD10 where simulations of the contact between brake block and wheel including temperature elevation will be studied.

Deltagare

Ali Esmaeili (kontakt)

Forskare vid Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Johan Ahlström

Biträdande professor vid Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

Magnus Ekh

Professor vid Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Tore V Vernersson

Forskare vid Chalmers, Mekanik och maritima vetenskaper, Dynamik

Samarbetspartners

Abetong AB

Växjö, Sweden

Bombardier Transportation

Berlin, Germany

Faiveley Transport

Landskrona, Sweden

Green Cargo

Solna, Sweden

Lucchini RS

Brescia, Italy

SJ

Stockholm, Sweden

SNC Lavalin

Montréal, Canada

SweMaint

Göteborg, Sweden

Trafikverket

Borlänge, Sweden

Voestalpine Schienen GmbH

Leoben, Austria

voestalpine VAE

Zeltweg, Austria

Finansiering

Chalmers järnvägsmekanik (CHARMEC)

Finansierar Chalmers deltagande under 2013–2019

Europeiska kommissionen (EU)

Finansierar Chalmers deltagande under 2013–2019

Relaterade styrkeområden och infrastruktur

Hållbar utveckling

Drivkrafter

Transport

Styrkeområden

C3SE (Chalmers Centre for Computational Science and Engineering)

Infrastruktur

Materialvetenskap

Styrkeområden

Mer information

Senast uppdaterat

2020-09-02