材料期刊网

利用有限元软件仿真设计了轴向堆叠压电复合材料圆环阵换能器的敏感元件.该换能器具有高频、宽带、水平全向发射的特性.利用ANSYS有限元分析软件对换能器敏感元件进行了模态分析和谐响应分析，通过改变复合材料结构参数，分析得到了复合材料圆环径向厚度振动频率和带宽随其厚度、高度和平均半径的变化规律，并据此确定了制备复合材料所需的最佳尺寸参数，为复合材料制备提供了仿真依据.按由仿真得到的最优参数制作了双圆环叠堆复合材料换能器敏感元件.经测试，该换能器形成了明显的双模耦合振动，其－3 dBd 工作带宽为90 kHZ.测试结果和仿真结果吻合，实现了换能器的高频、宽带、水平全向发射声波的设计目标.

Using finite element software,the sensitive element of the axial stack piezoelectric composite ring ar-ray transducer is designed.The transducer has the characteristics of high frequency,wide band,and horizontal directional emission.Using finite element analysis software of ANSYS transducer sensitive element of modal a-nalysis and harmonic response analysis,by changing the structure of the composite material parameters,analy-sis of obtained composite ring radial thickness of the vibration frequency and the bandwidth with the thickness, height and average radius,and to determine the best parameters required composite material preparation as for preparation of composite materials based on simulation.According to the optimal parameters obtained by the simulation,the sensitive element of the double ring laminated composite transducer is fabricated.After testing, the transducer has formed a distinct mode coupling vibration,the working bandwidth of -3 dBd is 90 kHz.The test results are in good agreement with the simulation results,and the high frequency,broadband,and horizon-tal omnidirectional emission of the transducer are achieved.