Using simulations for approval of railway vehicles: a comparison between measured and simulated track forces
Traditionally, the acceptance of railway vehicles with respect to vehicle dynamics such as safety of running has relied on the use of practical tests rather than on simulations. The track sections used in the tests are long, and the evaluation is based on statistical processing of the test data. Simulations, on the other hand, have more often been used for detailed analysis in specific shorter track segments in connection with, e.g., the vehicle design process. With new efficient track recording cars, new less time-consuming methods of handling measured track data and the development of faster computers new possibilities to use simulations also for statistical analysis arise. In this work, a comparison between track force measurements from tests with a Swedish Rc-locomotive and simulations on the same track using the statistical approach according to UIC 518 is done. In the example presented, there is a notable agreement between measurements and simulations.
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