Journal
VEHICLE SYSTEM DYNAMICS
Volume 47, Issue 12, Pages 1493-1510Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00423110802650024
Keywords
safety; railway; derail; vehicle; dynamic; contact
Categories
Funding
- Mechanical Department of the Escola Politecnica da Universidade de Sao Paulo (EP-USP) in Sao Paulo, Brasi
- Companhia Vale do Rio Doce - VALE
Ask authors/readers for more resources
The motivation for this research is to make a comparison between dynamic results of a free railway wheelset derailment and safety limits. For this purpose, a numerical simulation of a wheelset derailment submitted to increasing lateral force is used to compare with the safety limit, using different criteria. A simplified wheelset model is used to simulate derailments with different adhesion conditions. The contact force components, including the longitudinal and spin effects, are identified in a steady-state condition on the verge of a derailment. The contact force ratios are used in a three-dimensional (3D) analytical formula to calculate the safety limits. Simulation results obtained with two contact methods were compared with the published results and the safety limit was identified with the two criteria. Results confirm Nadal's conservative aspect and show that safety 3D analytical formula presents slightly higher safety limits for lower friction coefficients and smaller limits for high friction, in comparison with the simulation results with Fastsim.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available