@article{9294f577dd9d453b951e99cbf46c2a99,
title = "Dynamic behavior of a zero-group velocity guided mode in rail structures",
abstract = "Important characteristics of a zero-group velocity (ZGV) mode in a standard rail are investigated through numerical simulation and experiment. First, the semi-analytical finite element analysis is implemented to compute dispersion curves for the rail structure and the first ZGV point is identified. Backward waves are identified through opposing senses of group and phase velocities. Next, a time-dependent finite element model is used to understand the dynamic response of the rail. Finally, experimental measurements confirm that ZGV modes in rail structures are formed through interferences between two opposite-traveling waves, which is analogous to the S1-S2b ZGV Lamb mode in plate structures.",
author = "Yuning Wu and Keping Zhang and Peng Zhang and Xuan Zhu and Popovics, {John S.}",
note = "This work was supported by Federal Railroad Administration Contract No. 693JJ621C000025. This work was also partially funded by the startup package at the University of Utah. The support and resources from the Center for High Performance Computing at the University of Utah are gratefully acknowledged. The field data collection was coordinated and supported by the Utah Transit Authority. This work was supported by Federal Railroad Administration Contract No. 693JJ621C000025. This work was also partially funded by the startup package at the University of Utah. The support and resources from the Center for High Performance Computing at the University of Utah are gratefully acknowledged. The field data collection was coordinated and supported by the Utah Transit Authority.",
year = "2023",
month = oct,
day = "1",
doi = "10.1121/10.0021186",
language = "English (US)",
volume = "3",
journal = "JASA Express Letters",
issn = "2691-1191",
publisher = "American Institute of Physics",
number = "10",
}