Coupler dynamic performance analysis of heavy haul locomotives
In this paper, a train dynamic model was developed to study the dynamic performance of heavy haul locomotives, taking into account the use of different coupler and buffer systems under conditions of severe longitudinal coupler compressive forces. The model consists of four locomotives each having 38 independent degrees of freedom and one dummy freight vehicle connected to each other by couplers and buffers. Simulation results showed that the longitudinal coupler compressive forces withstood by large rotation angle couplers with coupler shoulders were larger than those withstood by small rotation angle couplers. The results obtained for the large rotation angle coupler model showed that it had higher safety curve negotiation speeds. Due to the smaller static impedance, it was found that large capacity elastic clay (or cement) buffers cannot satisfy the requirement of heavy haul locomotives during cycle braking in long heavy downgraded tracks; the use of friction clay buffers can solve this problem.
- Record URL:
-
Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/00423114
-
Supplemental Notes:
- Abstract reprinted with permission from Taylor & Francis.
-
Authors:
- Ma, Weihua
- Luo, Shihui
- Song, Rongrong
- Publication Date: 2012-9
Language
- English
Media Info
- Media Type: Print
- Features: Figures; References; Tables;
- Pagination: pp 1435-1452
-
Serial:
- Vehicle System Dynamics
- Volume: 50
- Issue Number: 9
- Publisher: Taylor & Francis
- ISSN: 0042-3114
- EISSN: 1744-5159
- Serial URL: https://www.tandfonline.com/toc/nvsd20/current
Subject/Index Terms
- TRT Terms: Braking performance; Couplers; Heavy haul; Locomotives; Stability analysis; Vehicle dynamics; Vehicle performance
- Subject Areas: Railroads; Vehicles and Equipment; I91: Vehicle Design and Safety;
Filing Info
- Accession Number: 01453931
- Record Type: Publication
- Files: TRIS
- Created Date: Nov 15 2012 12:33PM