Flexural vibration band gaps in thin plates with two-dimensional binary locally resonant structures

• 来源期刊: 中国物理（英文版）
• 关键词: phononic crystals flexural vibration band gaps locally resonant
• 年，卷（期）: 2006,（2）
• 页码范围: 266-271
• 页数: 6页
• 语种: 英文

摘要

The complete flexural vibration band gaps are studied in the thin plates with two-dimensional binary locally resonant structures, i.e. the composite plate consisting of soft rubber cylindrical inclusions periodically placed in a host material. Numerical simulations show that the low-frequency gaps of flexural wave exist in the thin plates. The width of the first gap decreases monotonically as the matrix density increases. The frequency response of the finite periodic thin plates is simulated by the finite element method, which provides attenuations of over 20dB in the frequency range of the band gaps. The findings will be significant in the application of phononic crystals.