中文摘要：

电力支柱瓷绝缘子超声波检测对预防和检测绝缘子裂纹和断裂起到重要作用,换能器是超声波检测的基础元件,而换能器的核心部件是压电陶瓷晶片,其性能直接影响到检测结果。该文研究针对有限元法和传统解析法在压电陶瓷晶片特性分析中的不足,采用ANSYS有限元分析软件对压电陶瓷锆钛酸铝（PZT）晶片进行特性分析,基于ANSYS的电-结构耦合场模型,对超声波换能器的矩形压电晶片进行静态、模态、谐响应和瞬态分析。通过模态分析和谐响应分析可得到晶片的一阶纵向振动和二阶弯曲振动的固有频率、振型及频率位移响应及影响因素等信息,研究结果对提高超声辐射功率及超声换能器的性能有一定的理论指导和工程应用价值。

英文摘要：

Ultrasonic testing with power pillar insulator has played an important role in preventing and detecting the crack and preventing fracture. Ultrasonic transducer is the basis of the test components, and the piezoelectric ceramic chip is the core components, its performance directly affect the test results. In order to avoid the shortage in traditional analytic method and the finite element analysis （FEA） in the analysis of piezoelectric ceramic chip, the software ANSYS analysis was used in the piezoelectric ceramic chip. Based on the electric-structure coupling model, the static, modal, harmonic response and transient state simulation was used in the rectangular piezoelectric ceramic chip of ultrasonic transducer. The natural frequencies, vibration mode, frequency displacement response of the wafer were analyzed through the ANSYS-based finite element analysis including the modal and harmonic response analysis of the piezoelectric ceramic chip. The research results would help to improve the performance of ultrasonic radiation power and ultrasonic transducer with certain theoretical guidance and engineering application value.