Multiobjective optimisation of bogie suspension to boost speed on curves
Artikel i vetenskaplig tidskrift, 2015

To improve safety and maximum admissible speed on different operational scenarios, multiobjective optimisation of bogie suspension components of a one-car railway vehicle model is considered. Track shift force, running stability, and risk of derailment are selected as safety objective functions. To attenuate the number of design parameters for optimisation and improve the computational efficiency, a global sensitivity analysis is accomplished using the multiplicative dimensional reduction method (M-DRM). A multistep optimisation routine based on genetic algorithm and MATLAB/SIMPACK co-simulation is executed at three levels.The bogie conventional secondary and primary suspension components are chosen as the design parameters in the first two steps, respectively. In the last step semi-active suspension is in focus. The input electrical current to magnetorheological yaw dampers is optimised to guarantee an appropriate safety level. Semi-active controllers are also applied and the respective effects on bogie dynamics are explored. The safety Pareto optimised results are compared with those associated with in-service values. The global sensitivity analysis and multistep approach significantly reduced the number of design parameters and improved the computational efficiency of the optimisation. Furthermore, using the optimised values of design parameters give the possibility to run the vehicle up to 13% faster on curves while a satisfactory safety level is guaranteed. The results obtained can be used in Pareto optimisation and active bogie suspension design problems.

vehicle speed on curve

Pareto multiobjective optimisation

Railway vehicle safety

global sensitivity analysis

bogie suspension

Författare

Milad Mousavi Bideleh Seyed

Dynamik

Viktor Berbyuk

Dynamik

Vehicle System Dynamics

0042-3114 (ISSN)

Vol. 54 1 58-85

Styrkeområden

Transport

Ämneskategorier

Teknisk mekanik

Farkostteknik

DOI

10.1080/00423114.2015.1114655

Mer information

Skapat

2017-10-07