Propagation of Lamb Waves in one Dimensional Nesting Fibonacci Superlattices Thin Plates

Abstract:

We present a comparative study on band-gap structures of Lamb waves propagating in one-dimensional periodic sequences thin plate, Fibonacci sequences thin plate, and the nesting Fibonacci superlattices thin plates with different generation numbers respectively. By comparing among TPS in different plates, it is found that Fibonacci model doesn’t present band gaps with generation numbers , , and . Band gaps occur and split in Fibonacci model when generation number increases to . But for the nesting Fibonacci superlattices with , more band gaps occur and band gaps become very flat. With generation numbers increase to , , and , more new band gaps present. It provides flexible choices for real engineering requirement.

• Periodical: Applied Mechanics and Materials (Volumes 121-126)
• Pages: 306-310
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.121-126.306
• Online since: October 2011
• Authors: Jian Gao, Xiu Fen Wu, Xing Gan Zhang
• Keywords: Band-Gap Structures, Finite Element Method (FEM), Lamb Wave, Nesting Fibonacci Superlattices

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