| 潘瑞,柴勇,莫喜平,刘文钊,张秀侦.单端激励的压电纵棒谐振特性分析建模*[J].,2024,43(4):719-726 |
| 单端激励的压电纵棒谐振特性分析建模* |
| Modeling and analysis of the resonant characteristics of partial excitation longitudinal piezoelectric bar |
| 投稿时间：2023-03-07 修订日期：2024-07-05 |
| 中文摘要: |
| 针对单端激励的压电纵振换能器中激励部分与被激模态之间的关系问题,使用压电纵棒分布参数模型构建等效电路，通过计算其力学阻抗的零极点，研究了激励部分的长度与所激发模态之间的关系以及被激模态的谐振特性。通过有限元方法建立具体算例，仿真分析了不同激励长度对压电纵棒谐振特性的影响规律。对比分析结果表明，理论模型与有限元仿真计算吻合较好。研究结果可为单端激励方法以及多模态纵振换能器的设计提供理论依据。 |
| 英文摘要: |
| To solve the problem of the relationship between the excited part and the excited mode in the partial excited piezoelectric longitudinal transducer, this paper uses the piezoelectric longitudinal bar distribution parameter model and constructs an equivalent circuit. The relationship between the length of the excitation section and the excited mode and the resonance characteristics of the excited mode are studied by calculating the zero-pole of its mechanical impedance. The effect of different excitation lengths on the resonance characteristics of the piezoelectric longitudinal rod is simulated and analyzed by the finite element method. Comparison of their results shows that the theoretical model is in good agreement with the finite element simulation calculations. The results can provide a theoretical basis for the design of partial excitation methods and multimodal longitudinal vibration transducers. |
| DOI：10.11684/j.issn.1000-310X.2024.04.002 |
| 中文关键词: 单端激励 纵振换能器 等效电路 多模态 有限元方法 |
| 英文关键词: Partial excitation Longitudinal transducer Equivalent circuit Multi-mode Finite element method |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目） |
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