Print Email Facebook Twitter Numerical and experimental study of wheel-rail impact vibration and noise generated at an insulated rail joint Title Numerical and experimental study of wheel-rail impact vibration and noise generated at an insulated rail joint Author Yang, Z. (TU Delft Railway Engineering) Boogaard, M.A. (TU Delft Railway Engineering) Chen, Rong Dollevoet, R.P.B.J. (TU Delft Railway Engineering) Li, Z. (TU Delft Railway Engineering) Date 2018 Abstract This paper presents an analysis of the transient contact solutions of wheel-rail frictional rolling impacts calculated by an explicit finite element model of the wheel-insulated rail joint (IRJ) dynamic interaction. The ability of the model to simulate the dynamic behavior of an IRJ has been validated against a comprehensive field measurement in a recent paper (Yang et al., 2018). In addition to the measured railhead geometry and bi-linear elastoplastic material model used in Yang et al. (2018), this study adopts a nominal railhead geometry and an elastic material model for the simulations to provide an overall understanding of the transient contact behavior of wheel-IRJ impacts. Each simulation calculates the evolution of the contact patch area, stress magnitude and direction, micro-slip distribution, and railhead nodal vibration velocity in the vicinity of the joint during the wheel-IRJ impacts. The simulations apply small computational and output time steps to capture the high-frequency dynamic effects at the wheel-IRJ impact contact. Regular wave patterns that indicate wave generation, propagation and reflection are produced by the simulations; this has rarely been reported in previous research. The simulated waves reflect continuum vibrations excited by wheel-rail frictional rolling and indicate that the simulated impact contact solutions are reliable. To reference this document use: http://resolver.tudelft.nl/uuid:14f69451-c102-4ae8-acc0-e88fad060165 DOI https://doi.org/10.1016/j.ijimpeng.2017.11.008 Embargo date 2019-11-20 ISSN 0734-743X Source International Journal of Impact Engineering, 113, 29-39 Part of collection Institutional Repository Document type journal article Rights © 2018 Z. Yang, M.A. Boogaard, Rong Chen, R.P.B.J. Dollevoet, Z. Li Files PDF AAM01.pdf 1.64 MB Close viewer /islandora/object/uuid:14f69451-c102-4ae8-acc0-e88fad060165/datastream/OBJ/view