Abstract
AbstractThe present paper shows the development of a strategy for the calculation of the air brake forces of European freight trains. The model is built to upgrade the existing Politecnico di Torino longitudinal train dynamics (LTD) code LTDPoliTo, which was originally unable to account for air brake forces. The proposed model uses an empirical exponential function to calculate the air brake forces during the simulation, while the maximum normal force on the brake friction elements is calculated according to the indication of the vehicle braked weight percentage. Hence, the model does not require to simulate in detail the fluid dynamics in the brake pipe nor to precisely know the main parameters of the braking system mounted on each vehicle. The model parameters are tuned to minimize the difference between the braking distance computed by the LTDPoliTo code and the value prescribed by the UIC 544-1 leaflet in emergency braking operations. Simulations are run for different configurations of freight train compositions including a variable number of Shimmns wagons trailed by an E402B locomotive at the head of the train, as suggested in a reference literature paper. The results of the proposed method are in good agreement with the target braking distances calculated according to the international rules.
Publisher
Springer Science and Business Media LLC
Subject
Electrical and Electronic Engineering,Computer Science Applications,Mechanical Engineering,Transportation,Computational Mechanics
Reference24 articles.
1. Wu Q, Spiryagin M, Cole C (2016) Longitudinal train dynamics: an overview. Veh Syst Dyn 54(12):1688–1714
2. Cole C (2020) Longitudinal train dynamics and vehicle stability in train operations. In: Iwnicki S, Spiryagin M, Cole C, McSweeney T (eds) Handbook of railway vehicle dynamics. CRC Press, Boca Raton, pp 457–519
3. Cole C (1998) Improvements to wagon connection modelling for longitudinal train simulation. Presented at CORE 1998: engineering innovation for a competitive edge: conference on railway engineering, Yeppoon, Queensland, Australia
4. Massa A, Stronati L, Aboubakr AK, Shabana AA, Bosso N (2012) Numerical study of the noninertial systems: application to train coupler systems. Nonlinear Dyn 68(1):215–233
5. Wu Q, Cole C, Luo S, Spiryagin M (2014) A review of dynamics modelling of friction draft gear. Veh Syst Dyn 52(6):733–758
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