مطالعه عددی و تجربی مبدل فرکانس پایین کششی-خمشی کلاس IV

Acoustic radiography under the sea is one of the biggest challenges in the world. Therefore, electroacoustic transducers are used to send and receive sound underwater. Among the types of electroacoustic transducers, transducers that can be used at low frequencies (less than 1 kHz), light weight (less than 250 kg), high power and can be used at great depths are very important. The design of electroacoustic transducers in this frequency range will cause a very high volume and cost, and in many cases it will be unmanufacturable, therefore, in order to meet this need, tensile-bending electroacoustic transducers are used. These types of converters have different categories and each category has a special use. In this article, a sample of class IV tension-bending converter, at low frequency, has been studied numerically and experimentally. In the following, SolidWorks design software was used to design and analyze the frequency of the converter and check the vibration modes of the converter. Finally, Comsol numerical software has been used to analyze acoustic parameters, including transmission sensitivity and frequency-resistance diagram. In order to validate the numerical analysis, a converter sample was made and all the acoustic and frequency parameters were extracted and it was observed that there is a very good agreement between the numerical results and the experimental sample.