The present invention relates to a method for designing a traction unit for a rail vehicle, the traction unit (103, 108) comprising at least one wheel unit (105) connected to a drive unit (107) driving the at least one wheel unit (105). The method comprises, in a press fit evaluation step, evaluating a press fit acting between a wheel and a shaft (105.1) of the wheel unit (105) for compliance with at least one press fit integrity criterion, the press fit acting between a first press fit section (105.4) of the wheel (105.2) and a second press fit section (105.5) of the shaft (105.1), an axis of rotation of the shaft (105.1) defining an axial direction of the wheel unit (105) and a torsional direction about the axis of rotation. The press fit evaluation step comprises a press fit modeling part, wherein the press fit is modeled by splitting the second press fit section (105.5) into a plurality of press fit segments (105.6) along the axial direction, linking each of the press fit segments (105.6) to an adjacent press fit segment (105.6) in the torsional direction using a first linking characteristic and in the axial direction using a second linking characteristic, and linking each of the press fit segments (105.6) to an adjacent part of the first press fit section (105.4) of the wheel (105.2) via at least one frictional third linking characteristic. The press fit evaluation step comprises a press fit simulation part, wherein the modeled press fit is subject to at least one predefined load to evaluate compliance of the press fit with the at least one press fit integrity criterion.
Method for designing a traction unit for a rail vehicle
Verfahren zum Entwurf einer Triebeinheit für ein Schienenfahrzeug
Procédé de conception d'une unité de traction pour véhicule ferroviaire
2015-09-02
Patent
Elektronische Ressource
Englisch
Method for designing a traction unit for a rail vehicle
Europäisches Patentamt | 2015
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