Tunable Band Gap in Piezoelectric Composite Rod Based on the Inter-Coupling Effect

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2018,（5）
• 页码范围: 60-64
• 页数: 5页
• 语种: 英文
• DOI: 10.1088/0256-307X/35/5/054601

摘要

The longitudinal wave propagating in one-dimensional periodic piezoelectric composite rod with inter-coupling between different piezoelectric segments is investigated.The analytical formulae for such a structure are shown and the dispersion relation is calculated.The results show that,by introducing the inter-coupling between the different piezoelectric segments,which is accomplished by serially connecting every n piezoelectric segment into supercclls,some tunable Bragg band gaps can accordingly be opened in the low frequency region.The investigation could provide a new guideline for the tunable phononic crystal under passive control.