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R. Nardin¹, M. Ammann¹, V. Crausaz¹, B. Van Damme², V. Michaud³, C. Plummer⁴, H. Frauenrath⁴, J. Oertli⁵ and J. Cugnoni⁶

¹Institute of mechanical design and materials technology, School of Engineering and Management, Yverdon-les-Bains, Switzerland
²Laboratory for Acoustics/Noise Control, Swiss Federal Laboratories for materials science and technology, Dubendorf, Switzerland
³Laboratory for Processing of Advanced Composites, Swiss Federal Institute of Technology in Lausanne, Switzerland
⁴Laboratory of Macromolecular and Organic Materials, Swiss Federal Institute of Technology in Lausanne, Switzerland

doi:10.4203/ccc.1.22.10

R. Nardin, M. Ammann, V. Crausaz, B. Van Damme, V. Michaud, C. Plummer, H. Frauenrath, J. Oertli, J. Cugnoni, "Open source vibro-acoustic finite element modelling of rail tracks components", in J. Pombo, (Editor), "Proceedings of the Fifth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 1, Paper 22.10, 2022, doi:10.4203/ccc.1.22.10

Keywords: finite element modelling, vibrations, acoustics, dynamic substructuring.

Abstract

Two finite element models simulating vibrations and noise emissions of rail tracks components are presented. Dynamic analyses are performed in the frequency domain and using 3D elements to quantify and compare the response of rail tracks to typical excitation conditions. Acoustic pressure fields are obtained using monopole sources superposition. One model is the digital twin of a three-sleeper lab-scale experimental setup. The other model is based on dynamic substructuring to simulate much longer tracks in a computationally efficient way. Both models provide satisfactory results in the range of interest (300Hz to 1500Hz) and were used to evaluate rail pads performances regarding noise emissions and ballast protection.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 1 PROCEEDINGS OF THE FIFTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 22.10 Open source vibro-acoustic finite element modelling of rail tracks components R. Nardin¹, M. Ammann¹, V. Crausaz¹, B. Van Damme², V. Michaud³, C. Plummer⁴, H. Frauenrath⁴, J. Oertli⁵ and J. Cugnoni⁶ ¹Institute of mechanical design and materials technology, School of Engineering and Management, Yverdon-les-Bains, Switzerland ²Laboratory for Acoustics/Noise Control, Swiss Federal Laboratories for materials science and technology, Dubendorf, Switzerland ³Laboratory for Processing of Advanced Composites, Swiss Federal Institute of Technology in Lausanne, Switzerland ⁴Laboratory of Macromolecular and Organic Materials, Swiss Federal Institute of Technology in Lausanne, Switzerland doi:10.4203/ccc.1.22.10 Full Bibliographic Reference for this paper R. Nardin, M. Ammann, V. Crausaz, B. Van Damme, V. Michaud, C. Plummer, H. Frauenrath, J. Oertli, J. Cugnoni, "Open source vibro-acoustic finite element modelling of rail tracks components", in J. Pombo, (Editor), "Proceedings of the Fifth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 1, Paper 22.10, 2022, doi:10.4203/ccc.1.22.10 Keywords: finite element modelling, vibrations, acoustics, dynamic substructuring. Abstract Two finite element models simulating vibrations and noise emissions of rail tracks components are presented. Dynamic analyses are performed in the frequency domain and using 3D elements to quantify and compare the response of rail tracks to typical excitation conditions. Acoustic pressure fields are obtained using monopole sources superposition. One model is the digital twin of a three-sleeper lab-scale experimental setup. The other model is based on dynamic substructuring to simulate much longer tracks in a computationally efficient way. Both models provide satisfactory results in the range of interest (300Hz to 1500Hz) and were used to evaluate rail pads performances regarding noise emissions and ballast protection. download the full-text of this paper (PDF, 8 pages, 793 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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