Fatigue analysis of two wheel‐ mounted brake disc designs
Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Due to a need of more compact bogies, the brake discs can be mounted on the railway wheels, bolted through the wheel web. Thus, the wheels are drilled and have multiple areas of contact with the brake discs. To establish maintenance procedures that will be applied to the wheels, SNCF used the feedback from experience (as with the train AGC) which gives perfect performance in terms of safety. However, to optimize the maintenance process, numerical simulations may be preferred since they are less conservative. This report describes the numerical simulations, based on the finite element method, that were conducted to determine if the Régiolis wheel complies with the standard EN 13979-‐1 from a mechanical fatigue point of view. In addition, it provides additional insights regarding the loads and damage suffered by the wheel, which are not taken into account in the standard: the damage induced by disc braking and the fretting that may occur at the contact interfaces. This study has been used as a decision support for the first inspection intervals of the Régiolis wheels.
Place, publisher, year, edition, pages
2015. , 54 p.
TRITA-AVE, ISSN 1651-7660 ; 2015:02
railway wheel, wheel‐mounted brake disc, fatigue, fretting, Finite Element Method, Finite Element Analysis, ANSYS, OptiStruct, nCode.
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-177313OAI: oai:DiVA.org:kth-177313DiVA: diva2:872206