期刊
MECCANICA
卷 55, 期 5, 页码 1181-1191出版社
SPRINGER
DOI: 10.1007/s11012-020-01151-z
关键词
Metamaterial beam; Wideband vibration attenuation; Locally resonant band; Bragg scattering band; Metabeam
类别
资金
- Inspire Faculty Award of Department of Science and Technology, Ministry of Science and Technology, Government of India [DST/INSPIRE/04/2018/000052]
Band gaps appear in the frequency spectra of an elastic beam having periodic spring-mass attachment, acronymed as metabeam. Two widely used beam theories, i.e. Euler-Bernoulli and Timoshenko, are non-dimensionalized in order to obtain the dimensionless periodicity parameters. In this paper, the location and width of band-gaps are investigated due to the variation of these periodicity parameters of a metabeam. Implementing transfer matrix method in conjunction with Bloch-Floquet theorem, a unified methodology has been adopted to estimate the propagation and attenuation bands in a metabeam. This paper provides a guideline towards the designing of wide-band metabeam by tunning the non-dimensional parameters.
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