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Mechanics of Advanced Materials and Structures Volume 29, 2022 - Issue 27
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Original Articles

Topological design and magnetic tunability of a novel cross‐like holes phononic crystal with low frequency

Gang Zhanga Key Laboratory of Mechanics on Environment and Disaster in Western China, The Ministry of Education of China, Lanzhou University, Lanzhou, Gansu, P. R. China;b Department of Mechanics and Engineering Science, College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, Gansu, P. R. ChinaView further author information
&
Yuanwen Gaoa Key Laboratory of Mechanics on Environment and Disaster in Western China, The Ministry of Education of China, Lanzhou University, Lanzhou, Gansu, P. R. China;b Department of Mechanics and Engineering Science, College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, Gansu, P. R. ChinaCorrespondence[email protected]
ORCID Iconhttps://orcid.org/0000-0002-9536-0070View further author information
ORCID Icon
Pages 6144-6153 | Received 30 Jul 2021, Accepted 21 Aug 2021, Published online: 12 Sep 2021
 
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Abstract

In this paper, a novel type of cross‐like holes phononic crystal with excellent band gap characteristics, machinability and stability is optimized and designed based on genetic algorithm. The improved genetic algorithm is used to enlarge the band gap in the low frequency range, and the transmission spectrum of the structure is calculated by finite element method. In addition, the magnetorheological elastomer was introduced to optimize the spatial magnetic field distribution and study the influence of magnetic field on the band gap. This work provides useful guidance for the topological design of other types of intelligent phononic crystals.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China (11872194 and 12072136).

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