Journal
SOLID STATE COMMUNICATIONS
Volume 271, Issue -, Pages 51-55Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ssc.2017.12.024
Keywords
Acoustic metamaterial; Magnetorheological elastomer; Locally resonant; Vibration isolator
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Funding
- Guangdong Province Natural Science Foundation of China [2015A030310412]
- Fund Project of Guangdong Institute of Science and Technology College [XJPY2016009]
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Magnetorheological elastomers (MREs) are used as cladding in three-dimensional locally resonant acoustic meta-material (LRAM) cores. The metamaterial units are combined into a vibration isolator. Two types of LRAMs, namely, cubic and spherical kernels, are constructed. The finite element method is used to analyze the elastic band structures, transmittances, and vibration modes of the incident elastic waves. Results show that the central position and width of the LRAM elastic bandgap can be controlled by the application of an external magnetic field; furthermore, they can be adjusted by changing the MRE cladding thickness. These methods contribute to the design of metamaterial MRE vibration isolators.
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