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Journal of KONES

Tytuł artykułu

Multibody dynamic stability analysis of a diesel-hydraulic locomotive

Autorzy Mahyuddin, A. I.  Febriartanto, A. N.  Akbar, A.  Handoko, Y. A. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
EN In the development stage of a rail vehicle, analyses to evaluate its dynamic stability are required. In this work, a newly designed Diesel-Hydraulic Locomotive is modelled as a multibody system consisting of several rigid bodies interconnected by elastic elements. Multibody dynamic analysis of the system is performed to obtain the dynamic response and stability evaluation. Stability on tangent and curve tracks as well as the Locomotive dynamic response is investigated. The stability on tangent track is limited by the locomotive critical speed, Vcr, evaluated for various wheel conicity and primary suspension stiffness. Operation beyond this critical speed will result in hunting which could lead to wheel-climb. Stability evaluation on the curve track is conducted through simulation of the model negotiating a curve with rail irregularity for various radii. The maximum and minimum velocities for negotiating the curve are evaluated. To evaluate the derailment safety on the curve track, the wheel-rail contact force ratio in lateral and vertical directions (L/V), and the loading-unloading ratio of the primary suspension in the vertical direction are computed, and are compared to limiting criteria. The results are found to meet the safety criteria. The guiding lateral force on the wheel entering a curve track for various primary suspension stiffnesses is also evaluated because its effect on wear rate of the wheel and rail. While lower stiffness value of the primary suspension results in favourable L/V and lower guiding force, it yields lower critical speed on tangent track. Hence, a parametric study of the primary suspension stiffness is conducted to obtain optimum value which yield acceptable critical speed and guiding force, yet still meet the safety criteria.
Słowa kluczowe
EN simulation of rail vehicle   locomotive   dynamic stability   critical speed   derailment  
Wydawca Institute of Aviation
Czasopismo Journal of KONES
Rocznik 2011
Tom Vol. 18, No. 3
Strony 219--226
Opis fizyczny Bibliogr. 16 poz., rys.
autor Mahyuddin, A. I.
autor Febriartanto, A. N.
autor Akbar, A.
autor Handoko, Y. A.
  • Institut Teknologi Bandung, Department of Mechanical Engineering Jalan Ganesa 10, Bandung 40132, Indonesia tel.: +62 22 2504243, fax: +62 22 2534099,
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