1-3型压电复合材料发射换能器研究

Research on a 1-3 piezocomposite projector

针对1-3型压电复合材料换能器完整模型节点数多、计算时间长,周期模型不能直接模拟换能器水中响应特性等问题,提出了应用ANSYS软件分析1-3型压电复合材料发射器的方法,并利用此方法和厚度模式理论设计了1-3型压电复合材料发射器.同时对厚度模式理论及有限元法计算结果和试验结果三者做出了对比分析.研究结果表明,所采用的有限元法计算结果与测试结果吻合较好,制作的复合材料发射换能器谐振频率为300 kHz,最大发射电压响应为178 dB,且厚度模态纯净.

Because the node quantity of a full 1-3 piezocomposite projector model is large, its computing time is longer; it is difficult for the unit cell model to directly simulate the projector response properties in the water. To address this difficulty, a method for analyzing a 1-3 piezocomposite projector by applying ANSYS software was presented. By using the method and thickness mode theory, a 1-3 piezocomposite projector was designed. In addition, the calculation results attained by applying thickness mode theory, FEM and the testing results were compared and analyzed. The research results show the following aspects ： the results of the FEM coincide well with the testing results, the resonance frequency of the designed projector is 300kHz with a peak transmitting voltage response of 178dB, and the thickness mode of the designed projector is pure.