有限元简化模型应用于超声换能器模拟分析

依据有限元方法的基本物理思想,在某些不需要计算辐射声场的准确声学参数和波束特性的工程应用方面,对流体模型进行充分简化,提出了简化模型处理的有效方法,利用该方法对超声换能器进行模拟分析,并进行了样品的制作和测试,实测结果与模型简化分析处理的结果基本一致。可以证明,用该方法进行换能器的优化设计是可行和高效的。

Simplified finite element model for simulation of ultrasonic transducer

A method of simplifying finite element model is proposed,which uses the fundamental physical theory of FEM（Finite Element Method） to simplify and analyze the fluid model in some engineering applications without the necessity of calculating precise acoustic parameters and beam characters of radiation sound field.By the ultrasonic transducer simulation with the method,a sample is developed and measured,and the result is substantially in accord with that of the simplified finite element model.Thereby it is proved to be feasible and effective for optimizing trans-ducer design.