[Pyrgidis,_Christos_N]_Railway_transportation_syst ( F3)

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[Pyrgidis,_Christos_N]_Railway_transportation_syst ( F3)

Chapter 13Tilting trains13.1DEFINITION AND FUNCTION PRINCIPLE OF TILTING TECHNOLOGYTilting trains (Pendolino, trains à caisse inclinable, Neigezug) ar

[Pyrgidis,_Christos_N]_Railway_transportation_syst ( F3)re conventional railway trains equipped with special technology that allows the car body of all vehicles, when it negotiates a horizontal curve, to ro

tate with respect to its longitudinal axis by an angle [Pyrgidis,_Christos_N]_Railway_transportation_syst ( F3)

horizontal level is equal to the sum of the track’s cant angle plus the tilting angle

[Pyrgidis,_Christos_N]_Railway_transportation_syst ( F3)

ing technology further increases rhe lateral component of the vehicle's weight B,v resulting in a decrease of the effect of the centrifugal force F^ o

Chapter 13Tilting trains13.1DEFINITION AND FUNCTION PRINCIPLE OF TILTING TECHNOLOGYTilting trains (Pendolino, trains à caisse inclinable, Neigezug) ar

[Pyrgidis,_Christos_N]_Railway_transportation_syst ( F3)way vehicle (F'L = Eiý - B:, = FjCos(Sp +

weightB,p Bi,: lateral component of the vehicle’s weightB„, BÚ: vertical component of the vehicle’s weightOn the basis of the above, tilting technolo [Pyrgidis,_Christos_N]_Railway_transportation_syst ( F3)

gy may potentially result in the following two alternative improvements regarding rhe level of service provided to passengers:•It can ensure lower res

[Pyrgidis,_Christos_N]_Railway_transportation_syst ( F3)

idual centrifugal force F^(Eic < Fnc) on the car body’s level in curved segments of the track for the same passage speed Vp compared with conventional

Chapter 13Tilting trains13.1DEFINITION AND FUNCTION PRINCIPLE OF TILTING TECHNOLOGYTilting trains (Pendolino, trains à caisse inclinable, Neigezug) ar

[Pyrgidis,_Christos_N]_Railway_transportation_syst ( F3)ssengers. In this case, the residual centrifugal acceleration Ynt. at whcelscts’ level and rhe forces exerted on the track (guidance forces F(| in the

case of flange contact, creep forces x,j, T1Ệ) remain the same for both technologies (Table 13.1).•It can enable an increase of rhe passage speed in [Pyrgidis,_Christos_N]_Railway_transportation_syst ( F3)

curves, keeping the car-body level, rhe same value as that of the residual lateral acceleration Ỵnc adopted for conventional trains (Table 13.2). This

[Pyrgidis,_Christos_N]_Railway_transportation_syst ( F3)

increase in speed docs not affect the passenger’s ride comfort;309310 Railway Transportation SystemsFigure 13.1 Railway vehicle motion in a curved se

Chapter 13Tilting trains13.1DEFINITION AND FUNCTION PRINCIPLE OF TILTING TECHNOLOGYTilting trains (Pendolino, trains à caisse inclinable, Neigezug) ar

[Pyrgidis,_Christos_N]_Railway_transportation_syst ( F3)<í, - B; = Frf cos(5p +

. Bi,: lateral component of the vehicle's weight. B^. B‘„: vertical component of the vehicle's weight. (Adapted from Pyrgidis, c. and Demindis. N 2006 [Pyrgidis,_Christos_N]_Railway_transportation_syst ( F3)

. The effects of tilting trains on the track superstructure, lit International Congress, ‘Railway Conditioning and Monitoring' 2006, IET. 29-30 Novemb

[Pyrgidis,_Christos_N]_Railway_transportation_syst ( F3)

er 2006, Birmingham. UK. Conference Proceedings, pp. 38-43; Pyrgidís. c. 2009. Tilting trains/conventional trains -Comparison of the lateral forces ac

Chapter 13Tilting trains13.1DEFINITION AND FUNCTION PRINCIPLE OF TILTING TECHNOLOGYTilting trains (Pendolino, trains à caisse inclinable, Neigezug) ar

[Pyrgidis,_Christos_N]_Railway_transportation_syst ( F3) section - Track with cant. (Adapted from ABB (no date). The fast-Train - technology for faster passenger services on existing railway lines. Leaflet.

Manheim. Germany.)Tilting trains 311Figure 13.3 Tilting car-body railway vehicle negotiating a curved track section. Silenen, Switzerland. (Photo: A. [Pyrgidis,_Christos_N]_Railway_transportation_syst ( F3)

Klonos.)Table 13.1 Tilting and conventional car-body trains running with the same speed -effects on horizontal curvesLateral residua) accelerationCar

[Pyrgidis,_Christos_N]_Railway_transportation_syst ( F3)

-bodyBogies andtechnology Passage speed Car-body level wheelset level Guidance forceslcreep forcesConventionalVpfKY^F./X^T^car bodyTilting car bodyVpY

Chapter 13Tilting trains13.1DEFINITION AND FUNCTION PRINCIPLE OF TILTING TECHNOLOGYTilting trains (Pendolino, trains à caisse inclinable, Neigezug) ar

[Pyrgidis,_Christos_N]_Railway_transportation_syst ( F3)gnena Fcnworia. April 2009. Rome. No 4, pp 361-371.Table 13.2 Tilting trains running with higher speed than conventional car-body trains - effects on

horizontal curvesLateral residual accelerationCar-body technologyPassage speedCar-body levelBogies and whec/sct levelGuidance forceslcreep forcesConve [Pyrgidis,_Christos_N]_Railway_transportation_syst ( F3)

ntionalVpcar bodyTilting car bodyv; > v„Y- > Y~f; >F,.xịTỴ>x„T,

Chapter 13Tilting trains13.1DEFINITION AND FUNCTION PRINCIPLE OF TILTING TECHNOLOGYTilting trains (Pendolino, trains à caisse inclinable, Neigezug) ar