Wheel-rail contact modeling for damage predictions in dynamics simulation software
2015 (English)In: CM 2015 - 10th International Conference on Contact Mechanics of Wheel / Rail Systems, International Conference on Contact Mechanics of Wheel , 2015Conference paper (Refereed)Text
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 exact two-dimensional solution of rolling contact to three-dimensional contacts. The proposed contact model is compared to the Kik-Piotrowski 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.
Place, publisher, year, edition, pages
International Conference on Contact Mechanics of Wheel , 2015.
IdentifiersURN: urn:nbn:se:kth:diva-187406ScopusID: 2-s2.0-84963603461OAI: oai:DiVA.org:kth-187406DiVA: diva2:930695
10th International Conference on Contact Mechanics of Wheel / Rail Systems, CM 2015; Cheyenne Mountain Resort Colorado Springs; United States
QC 201605252016-05-252016-05-232016-05-25Bibliographically approved