Energy harvesting from railway slab-tracks with continuous slabs
Author | Hussein, Mohammed F. M. |
Author | Renno, Jamil M. |
Author | Muthalif, Asan G. A. |
Available date | 2024-05-14T03:51:40Z |
Publication Date | 2023 |
Publication Name | JVC/Journal of Vibration and Control |
Resource | Scopus |
Identifier | http://dx.doi.org/10.1177/10775463211054259 |
ISSN | 10775463 |
Abstract | This paper contributes to the literature and development of knowledge in the topic of energy harvesting by presenting the modelling and calculations of energy from vibration of railway tracks due to moving trains on floating-slab tracks with continuous slabs, considering both the quasi-static and dynamic effects. The floating-slab track is modelled as a double Euler-Bernoulli beam connected by continuous spring and damper elements. The dynamic excitation is accounted for by considering the un-sprung axles of a passing train with a number of coaches. The dynamic excitation is simulated using randomly generated unevenness from standard functions of power spectral density. The responses of rails' beam and slab are calculated for different unevenness realizations, and then used as inputs for a base-excited single-degree-of-freedom system that models the harvester. The change in the harvested energy is investigated due to the change of natural frequency of the harvester, the change of condition of track and change of train's velocity. The parameters used in this paper correspond to tracks and trains for Doha metro and unevenness information from the literature. The results show that more energy can be harvested by tuning the harvester's natural frequency to the frequency of axle-track resonance. It is found that a maximum mean-energy can be harvested from the rails of 0.35 J/kg for a train moving at 100 km/h for a track with poor condition and this is obtained at the axle-track resonance frequency. For the same track condition, a reduction of about 55% and 61% is observed for train's velocities of 70 km/h and 40 km/h, respectively. Using a track with medium and good conditions resulted in reduction of the mean harvested energy at the axle-track resonance by 73.5% and 99.9%, respectively. |
Sponsor | The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was partially supported by a Grant from Qatar Rail (Grant Numbers: QUEX-CENG-QR-21/22-1). |
Language | en |
Publisher | SAGE Publications Inc. |
Subject | Energy harvesting railway dynamics slab-tracks track condition unevenness |
Type | Article |
Pagination | 882-901 |
Issue Number | 4-Mar |
Volume Number | 29 |
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Civil and Environmental Engineering [778 items ]
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Mechanical & Industrial Engineering [1343 items ]