Mathematical modelling to simulate the transient dynamic longitudinal force in draw bars of a train-consist
✍ Scribed by J.S. Rao; E. Raghavacharyulu; N. Kumar
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 647 KB
- Volume
- 94
- Category
- Article
- ISSN
- 0022-460X
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✦ Synopsis
This paper deals with the theorY and development of a computer-oriented mathematical model to determine the transient response and coupling (draw-bar) forces of a train-consist subjected to different train handling conditions. The longitudinal motion is assumed to take place independently and the equations of motion for the system are set up in a matrix form. A transfer matrix method is adopted to determine the free vibration characteristics. The response of the system due to the transient forces is obtained by modal analysis with account taken altogether of rite modes, including the rigid body mode. The displacement response and the draw-bar forces obtained for a typical train-consist are presented in tables and figures. The computer programs developed can be used to lay down train handling and make up procedures to avoid possible dangerous conditions of draw-bar failures. For a typical train-consist, trial runs to observe the draw-bar failures under certain severe conditions of driving were conducted. Dynamometer records were made next to the locomotive of a freight train for different conditions of train handling. For a specific train-consist the results obtained from the mathematical model are compared with the field data collected and a reasonably close agreement has been observed.