Curving performance and nonlinear dynamic behaviour of freight cars with three-piece bogies ; Paper A: Dynamic behaviour of ore wagons in curves at Malmbanan ; Paper B: Prediciton of lateral wheel-rail contact forces for ore wagons with three-piece bogies ; Paper C: Freight car curving performance at braked conditions ; Paper D: Track impact due to dispalcement limitations in freight car secondary suspension ; Paper E: Consequences of nonlinear characteristics of a secondary suspension in a three-piece freight car bogie / Berghuvud, Ansel

By: Berghuvud, AnselLanguage: English Series: Maskinteknik. Datorstödd Maskinkonstruktion. Doktorsavhandling 2001:09Publisher: Luleå : Luleå tekniska högskola, 2001Description: 45 s + bilSubject(s): järnvägar | Malmbanan | spårdynamik | dynamik | boggier | spårgeometri | examensarbeten
Contents:
This thesis considers modelling and simulation of the dynamic interaction between freight cars and railway track. The aim of the work is to study and enhance the knowledge and understanding of the nonlinear interaction for different heavy haul freight vehicle concepts of ore wagons applied at Malmbanan/Ofotbanen in northern Sweden and Norway. The thesis comprises an introductory part and five appended papers. The modelling of the vehicles is described, and a comparison is made between different design solutions for steady state curving performance with non-worn wheel and rail profiles on designed track geometry. The influence of worn rail profiles and braking on the curving performance is studied, and calculated lateral wheel-rail contact forces are compared with measured forces. The complex dynamic behaviour of parts of the system with nonlinear characteristics is also studied.
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This thesis considers modelling and simulation of the dynamic interaction between freight cars and railway track. The aim of the work is to study and enhance the knowledge and understanding of the nonlinear interaction for different heavy haul freight vehicle concepts of ore wagons applied at Malmbanan/Ofotbanen in northern Sweden and Norway. The thesis comprises an introductory part and five appended papers. The modelling of the vehicles is described, and a comparison is made between different design solutions for steady state curving performance with non-worn wheel and rail profiles on designed track geometry. The influence of worn rail profiles and braking on the curving performance is studied, and calculated lateral wheel-rail contact forces are compared with measured forces. The complex dynamic behaviour of parts of the system with nonlinear characteristics is also studied.

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