Longitudinal displacements of railway jointless track due to local temperature difference on its length

In the paper is shown an analysis of a CWR track’s longitudinal displacements dueto a local temperature difference on its length. The thermical forces on the railwaytrack length arise due to a local temperature difference of rail, causing the local,zonal the longitudinal displacements of rail cross-sections. Axial displacements oftrack induce in succession a longitudinal reaction of roadbed in such a degree on whicha arising displacements allow. Additionally a arising during track operating a variablelongitudinal resistance on track’s length (generated among other things by differentstate of ballast compaction, different pressure force of rail foot to divider),periodical acting force from vehicles, different value of adhesion wheels with rails andalso different stage of rail heating, cause a disturbance section of equilibrium stateof CWR track. In certain cases it assumes a shape of rails micro displacements, whichcan take a form e.g. creep displacements leading to value changes of longitudinal forceson this segment length with arising displacements. In paper analytical form ofconsidered problem is given and computational examples, diagrams and tables reflectinginfluence of analyzed parameters on obtained a CWR track’s longitudinal displacementsdue to local temperature difference on its length is inserted Keywords: CWR track;Longitudinal displacement; Local temperature difference