A fast wheel–rail contact model for application to damage analysis in vehicle dynamics simulation

Matin Sh. Sichani, Roger Enblom, Mats Berg

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

A novel wheel–rail contact model is proposed to be implemented for multi-body dynamics simulation, in order to facilitate accurate online calculation of damage phenomena such as wear and rolling contact fatigue. The normal contact, i.e. contact patch and pressure distribution, is calculated using a fast non-elliptic algorithm called ANALYN. The tangential contact, i.e. tangential stress distribution, stick–slip division and creep force calculation, is treated using an alternative to the FASTSIM algorithm that is based on a strip theory which extends the two-dimensional solution of rolling contact to three-dimensional contacts. The proposed contact model is compared to the Hertz+FASTSIM model and evaluated using the CONTACT code in terms of contact patch and stress distribution as well as creep force curves. The results show that the proposed model can significantly improve the estimation of the contact solution both in terms of creep force estimation and contact details, such as stress distribution, needed for damage predictions.

Original languageEnglish
Pages (from-to)123-130
Number of pages8
JournalWear
Volume366-367
Early online date22 Jun 2016
DOIs
Publication statusPublished - 15 Nov 2016
Externally publishedYes

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