In full or partially low floor trams with independent wheels, brake disks are often coaxial and external to wheels. Brake pads are operated by brakes callipers, similarly to what happens in automotive rather than railway practice, and are often directly connected to the bogie frame. This leads to a risk of potential vibrational damage much higher than in traditional systems; in the absence of a primary suspension, poor reliability of brake calliper can result. Such a case is the object of this paper, in which failures are analysed via experimental and numerical procedures, while a redesign of the brake calliper support including elastic element is compared to the initial solution.
Failure analysis & redesign of a brake calliper support / A.Bracciali;F.Piccioli;T.De Cicco. - ELETTRONICO. - (2009), pp. 1-10. (Intervento presentato al convegno Railway Engineering 2009 tenutosi a Londra, UK nel 24-25 Giugno 2009).
Failure analysis & redesign of a brake calliper support
BRACCIALI, ANDREA
;PICCIOLI, FABIO;
2009
Abstract
In full or partially low floor trams with independent wheels, brake disks are often coaxial and external to wheels. Brake pads are operated by brakes callipers, similarly to what happens in automotive rather than railway practice, and are often directly connected to the bogie frame. This leads to a risk of potential vibrational damage much higher than in traditional systems; in the absence of a primary suspension, poor reliability of brake calliper can result. Such a case is the object of this paper, in which failures are analysed via experimental and numerical procedures, while a redesign of the brake calliper support including elastic element is compared to the initial solution.
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