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• W4387056198 abstract "ABSTRACTThe vibration caused by urban rail transit has led to numerous severe environmental issues. The floating slab track (FST) plays an important role in vibration control and noise reduction for rail transit. In this study, a novel phononic crystal vibration isolator (NPCVI) is developed based on the principle of local resonance to address the deficiencies in the low frequency vibration reduction of existing FST with steel spring vibration isolators (SSVI). The vibration equation of the NPCVI is derived and an analytical method for the dynamic interaction between vehicle, track, and tunnel is proposed. The pseudo excitation method (PEM) is introduced to solve the random vibration response of the vehicle-track-tunnel coupled system under the excitation of full-band track random irregularity. The numerical simulation results are compared with the field measurement results to verify the correctness of the solution model. The vibration reduction analysis of FST using NPCVI is conducted within a system dynamics framework, and a comparison is made between the performance of the conventional SSVI and the proposed NPCVI while a train is passing. The vibration reduction optimization effect of the NPCVI is evaluated using the vibration level (VL) of the tunnel structure. The results demonstrate that the NPCVI exhibits a superior band gap width as compared to that of the SSVI.KEYWORDS: Urban rail transitfloating slab trackvibration isolatorvibration reductionphononic crystals AcknowledgementsThis research was supported by the National Natural Science Foundation of China (No. 52178436), and sponsored by Shanghai Collaborative Innovation Research Center for Multi-network & Multi-modal Rail Transit.Authorship contribution statementXinwen Yang: Methodology, Supervision, Funding acquisition, Writing – review & editing. Yingjie Zhang: Data curation, Validation, Software. Zhao Zhang: Conceptualization, Methodology, Software, Writing – original draft. Yanyan Zhang: Data curation, Visualization, Investigation.Disclosure statementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.Additional informationFundingThe work was supported by the the National Natural Science Foundation of China [No. 52178436]." @default.
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• W4387056198 date "2023-09-26" @default.
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• W4387056198 title "Effect of novel phononic crystals vibration isolator on vibration reduction for floating slab track considering the random dynamical load of the vehicle" @default.
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• W4387056198 doi "https://doi.org/10.1080/23248378.2023.2261445" @default.
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