Application and optimization design of non-obstructive particle damping-phononic crystal vibration isolator in viaduct structure-borne noise reduction

作     者：SHI Duo-jia ZHAO Cai-you ZHANG Xin-hao ZHENG Jun-yuan WEI Na-chao WANG Ping 师多佳;赵才友;张鑫浩;郑钧元;未娜超;王平

作者机构：Key Laboratory of High-speed Railway EngineeringMinistry of EducationSouthwest Jiaotong UniversityChengdu 610031China School of Civil EngineeringSouthwest Jiaotong UniversityChengdu 610031China 

基　　金：Project(51978585)supported by the National Natural Science Foundation,China Project(2022YFB2603404)supported by the National Key Research and Development Program,China Project(U1734207)supported by the High-speed Rail Joint Fund Key Projects of Basic Research,China Project(2023NSFSC1975)supported by the Sichuan Nature and Science Foundation Innovation Research Group Project,China 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2024年第31卷第7期

页      码：2513-2531页

摘      要：The problems associated with vibrations of viaducts and low-frequency structural noise radiation caused by train excitation continue to increase in importance.A new floating-slab track vibration isolator-non-obstructive particle damping-phononic crystal vibration isolator is proposed herein,which uses the particle damping vibration absorption technology and bandgap vibration control *** vibration reduction performance of the NOPD-PCVI was analyzed from the perspective of vibration *** paper explores the structure-borne noise reduction performance of the NOPD-PCVIs installed on different bridge structures under varying service conditions encountered in practical engineering *** load transferred to the bridge is obtained from a coupled train-FST-bridge analytical model considering the different structural parameters of *** vibration responses are obtained using the finite element method,while the structural noise radiation is simulated using the frequency-domain boundary element *** the particle swarm optimization algorithm,the parameters of the NOPD-PCVI are optimized so that its frequency bandgap matches the dominant bridge structural noise frequency *** noise reduction performance of the NOPD-PCVIs is compared to the steel-spring isolation under different service conditions.

主 题 词：non-obstructive particle damping phononic crystal vibration isolator band gap optimization floating-slab track bridge structure-borne noise control particle swarm optimization 

学科分类：07[理学] 08[工学] 070206[070206] 0802[工学-机械学] 0702[理学-物理学类] 

核心收录：

D　O　I：10.1007/s11771-024-5704-6

馆 藏 号：203132041...