VIBRATION REDUCTION OF LOW FREQUENCY OF PHONONIC-LIKE CRYSTAL STRUCTURES FOR SUBWAYS

LINCHANG MIAO; LIJIAN LEI; CHAO LIJUNJIE WANGZHENDONG QIAN

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VIBRATION REDUCTION OF LOW FREQUENCY OF PHONONIC-LIKE CRYSTAL STRUCTURES FOR SUBWAYS

机译：VIBRATION REDUCTION OF LOW FREQUENCY OF PHONONIC-LIKE CRYSTAL STRUCTURES FOR SUBWAYS

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摘要

Damping vibration reduction techniques, such as using rubber products, are widely used for reducing engineering structure vibrations, but they are mainly suitable for high-frequency damping fields. However, the vibration induced by subways and earthquakes is low frequency vibration. Low frequency vibration reduction is among the major challenges for engineering applications. In this respect, searching for suitable materials for this aim is a very important task. This paper aims to develop a new phononic-like crystal structure material for decreasing subway-induced vibration. The proposed new material has the periodic structure of multicrystal cell aggregates and has the basic characteristics of opening low frequency band gaps. Based on the new phononic-like crystal periodic structure, a high-polymer concrete is constructed. The theoretical and experimental results demonstrate the slab bed track of metro railways with a phononic-like crystal structure possesses the low frequency and wide band gaps and can thus be used in underground railroad transport engineering to reduce vibration wave propagation.

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来源
《Journal of mechanics of materials and structures》 |2022年第3期|193-205|共13页
作者
LINCHANG MIAO; LIJIAN LEI; CHAO LIJUNJIE WANGZHENDONG QIAN;
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作者单位

School of Transportation, Southeast University, Nanjing, Jiangsu, China;

School of Transportation Engineering, Shandong Jianzhu University, Jinan, Shandong, China School of Transportation, Southeast University, Nanjing, Jiangsu, China;

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正文语种英语
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vibration reduction material; phononic-like crystal; low frequency band gap; generalized scattering local resonance; railroad transport engineering;

VIBRATION REDUCTION OF LOW FREQUENCY OF PHONONIC-LIKE CRYSTAL STRUCTURES FOR SUBWAYS

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