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An inverse railway wagon model and its applications

journal contribution
posted on 06.12.2017, 00:00 by Fujie XiaFujie Xia, Colin ColeColin Cole, Peter WolfsPeter Wolfs
An inverse wagon model was developed to estimate wheel–rail contact forces using only measurements of wagon body responses as inputs. The purpose of this work was to provide mathematical modelling to embed in low-cost devices that can be mounted on each freight wagon in a large wagon fleet. To minimize cost, complication, and the maintenance inconvenience of these devices, the constraint is imposed that transducers and connections are limited to locations on the wagon body. Inputs to the inverse model developed include only vertical and lateral translational accelerations and angular accelerations of roll, pitch, and yaw of the wagon body. The model combines the integration and partial modal matrix (PMM) techniques together to form an IPMM method. Besides wheel–rail contact forces some motion quantities such as the lateral and yaw displacements of wheelset are also predicted. Results from the inverse model were compared with data from full scale laboratory suspension tests for vertical suspension excitations. The inverse model was also compared with results from simulations completed in VAMPIRE for more complicated track input profiles. The model results and the applications of the model are discussed.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Volume

45

Issue

6

Start Page

583

End Page

605

Number of Pages

23

ISSN

0042-3114

Location

London

Publisher

Taylor & Francis

Language

en-aus

Peer Reviewed

Yes

Open Access

No

Era Eligible

Yes

Journal

Vehicle system dynamics : international journal of vehicle mechanics and mobility.