Wheel tread damage – a numerical study of railway wheel tread plasticity under thermomechanical loading
Artikel i vetenskaplig tidskrift, 2010

A numerical study is presented where the impact of simultaneous thermal and mechanical loading on a railway wheel tread, as imposed by braking and rolling contact, is reported. A comparison is made of two-dimensional (2D) and 3D finite-element simulations of the thermomechanical problem featuring a material model that accounts for thermal expansion and plastic deformations. It is found that 2D simulations give unrealistic predictions of plastic deformations. The 3D simulations demonstrate a significant influence of the thermal loading also in cases of rather moderate temperature increases. In particular, the combination of thermal loading and high traction is found to be very detrimental.

Författare

Tore V Vernersson

Chalmers, Tillämpad mekanik, Dynamik

Sara Caprioli

Chalmers, Tillämpad mekanik, Dynamik

Elena Kabo

Chalmers, Tillämpad mekanik, Material- och beräkningsmekanik

Håkan Hansson

Chalmers, Tillämpad mekanik, Material- och beräkningsmekanik

Anders Ekberg

Chalmers, Tillämpad mekanik, Dynamik

Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit

0954-4097 (ISSN)

Vol. 224 5 435-443

Ämneskategorier

Teknisk mekanik

Annan materialteknik

DOI

10.1243/09544097JRRT358