2026-04-17T14:21:50Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/4171122026-02-07T09:46:26Zcom_2072_1033col_2072_452950

Evaluating the impact of rail surface roughness post-grinding: an experimental and elastoplastic modelling approach Edjeou, Wiyao Moström, Oskar Asplund, Matthias Larsson Kråik, Per Olof Pérez Rafols, Francisco Larsson, Roland Almqvist, Andreas Universitat Politècnica de Catalunya. Departament d'Enginyeria Minera, Industrial i TIC Universitat Politècnica de Catalunya. RIIS - Grup de Recerca en Recursos i Indústries Intel·ligents i Sostenibles Àrees temàtiques de la UPC::Enginyeria mecànica Railways grinding Wear Elastoplastic contact Sub-surface stress Grinding is regularly conducted on railway tracks to prevent crack propagation and surface deterioration. However, grinding can introduce roughness on rail surfaces, potentially leading to stress and strain concentration that increase the likelihood of crack initiation. This paper proposes the utilization of surface roughness obtained by replicating the ground rail surface to assess its impact on train wheel-rail interactions. A novel approach which integrates the replicated roughness into an elastoplastic contact model, allows for a detailed assessment of its effects on contact pressure, and residual strain and stress distributions. The findings highlight the importance of considering surface roughness in predictive maintenance planning for railway infrastructure, as it can significantly influence the structural integrity and long-term performance of the track system. This research was supported by Swedish Transport Administration and the Kempe Foundation. Peer Reviewed Postprint (published version) 2025-01-01 Article Edjeou, W. [et al.]. Evaluating the impact of rail surface roughness post-grinding: an experimental and elastoplastic modelling approach. "Tribology international", 1 Gener 2025, vol. 201, núm. article 110270. 0301-679X https://ltu.diva-portal.org/smash/record.jsf?pid=diva2%3A1901864&dswid=-7741 https://hdl.handle.net/2117/417112 10.1016/j.triboint.2024.110270 eng https://www.sciencedirect.com/science/article/pii/S0301679X24010223 https://creativecommons.org/licenses/by/4.0/ Open Access Attribution 4.0 International application/pdf