Multi-objective design optimisation of transition zones between different railway track forms
Paper i proceeding, 2018

The vertical dynamic interaction between vehicle and railway track is simulated in the time domain using an extended state space vector approach. The track model includes a transition zone between slab track on a bridge and ballasted track on an embankment. By considering a multi-objective optimisation problem, solved using a genetic algorithm, selected vehicle and track responses are simultaneously minimised by optimising the distributions of rail pad stiffness and sleeper spacing in the transition zone. It is shown that the magnitudes of the maximum dynamic loads in the optimised transition zone can be reduced to be similar as the magnitudes far away from the transition zone.

Transition zone

Vehicle–track interaction

Genetic algorithm

Railway track transitions

Optimisation

Slab track

Författare

Emil Aggestam

Chalmers, Mekanik och maritima vetenskaper, Dynamik

Jens Nielsen

Chalmers, Mekanik och maritima vetenskaper, Dynamik

Andreas Andersson

Trafikverket

Martin Li

Trafikverket

11th International Conference on Contact Mechanics and Wear and Rail/Wheel Systems
Delft, Netherlands,

Ämneskategorier

Maskinteknik

Styrkeområden

Transport

Mer information

Senast uppdaterat

2018-10-08