Three-point contact occurs in curving and transfer of a wheelset over switches and turnouts. In this study, an approach is presented that enforces three-point contact between a wheelset and a rail. This is accomplished by placing the wheelset over the track by setting the wheelset position parameters. Then, the location of all common normal are computed. Next, three common normal with shortest length are used to set up the non-penetrating constraint equations in track coordinate system. This led to nine algebraic equations whose Jacobean can be represented by block matrices. A Newton iterate based on these block matrices are used to compute the location of the three contact points. Several numerical examples are presented to verify the accuracy of the approach.
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2016 Joint Rail Conference
April 12–15, 2016
Columbia, South Carolina, USA
Conference Sponsors:
- Rail Transportation Division
ISBN:
978-0-7918-4967-5
PROCEEDINGS PAPER
Three-Point Contact Study of a Wheelset and Rails
Behrooz Fallahi,
Behrooz Fallahi
Northern Illinois University, DeKalb, IL
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Chao Pan
Chao Pan
Northern Illinois University, DeKalb, IL
Search for other works by this author on:
Behrooz Fallahi
Northern Illinois University, DeKalb, IL
Chao Pan
Northern Illinois University, DeKalb, IL
Paper No:
JRC2016-5722, V001T10A001; 6 pages
Published Online:
June 10, 2016
Citation
Fallahi, B, & Pan, C. "Three-Point Contact Study of a Wheelset and Rails." Proceedings of the 2016 Joint Rail Conference. 2016 Joint Rail Conference. Columbia, South Carolina, USA. April 12–15, 2016. V001T10A001. ASME. https://doi.org/10.1115/JRC2016-5722
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