圆弧型弹性弯管频率特性的有限元分析

Analysis of Frequency Characteristics for the Circular Arc Tube using FEM

弹性弯管在谐振式直接质量流量传感器中起着重要的作用。研究结果表明:圆弧型弯管在敏感单元中的作用较大。利用所建立的有限元模型,这里,对圆弧型弹性弯管一、二阶频率特性进行了详细研究。基于仿真计算结果,得到了圆弧型弹性弯管频率特性的一般规律。为谐振式直接质量流量传感器设计合理的弹性弯管结构提供了若干理论依据。

The elastic tube plays an important role in the resonant direct mass flow sensor. It is shown that the circular arc tube is of significant for sensing component. Based on finite element model, this paper investigates the frequency characteristics for the first and second modes of the circular arc tube. The general results of the frequency characteristics of the circular arc tube are obtained according to the simulation Some theoretical bases are provided to design and select the better sensing structure for resonant direct mass flow meter.