Finite Element Calculation with Experimental Verification for a Free-Flooded Transducer Based on Fluid Cavity Structure.
Finite Element Calculation with Experimental Verification for a Free-Flooded Transducer Based on Fluid Cavity Structure.
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DOI：
10.3390/s18093128
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发表时间：
2018-09-17
期刊：
影响因子：
--
通讯作者：
Tian W
中科院分区：
文献类型：
--
作者：
He Z;Chen G;Wang Y;Zhang K;Tian W
研究了一种将纵向振动换能器的振动与铝环的流体腔耦合的自由淹没式换能器。由于换能器是基于流体腔结构，没有空气腔，它可以抵抗高静水压力时，水下工作，这是适合在深海应用。首先介绍了传感器的结构和工作原理。建立了换能器的轴对称有限元模型，并利用有限元法对换能器的发射电压响应、导纳和辐射方向性进行了仿真。根据有限元模型的尺寸，设计并制作了换能器样机，并在消声水池中对样机的电声性能进行了测试。实验结果与仿真结果一致，表明该换能器具有良好的性能。最后，通过有限元分析得到了自由淹没铝环优化设计对换能器辐射方向性的改善，并通过实验进行了验证。
A free-flooded transducer that couples the vibration of a longitudinal vibration transducer and the fluid cavity of an aluminum ring was investigated. Given the transducer is based on a fluid cavity structure and has no air cavity, it can resist high hydrostatic pressure when working underwater, which is suitable for application in the deep sea. At first, the structure and working principle of the transducer were introduced. Then, the axisymmetric finite element model of the transducer was established; and the transmitting voltage response, admittance, and radiation directivity of the transducer were simulated using the finite element method. According to the size of the finite element model, a prototype of the transducer was designed and fabricated, and the electro-acoustic performance of the prototype was measured in an anechoic water tank. The experimental results were consistent with the simulation results and showed a good performance of the transducer. Finally, the improvement of the radiation directivity of the transducer by the optimal design of the free-flooded aluminum ring was obtained using the finite element method and verified by experiments.
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影响因子：
2.4
作者：
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