Design and research on impact resistance characteristics of vector hydrophone application platform

Tianji Zhao,Hongjuan Chen,V Goussev,J Yin

doi:10.1051/matecconf/201928309001

Tianji Zhao, Hongjuan Chen + Show 2 more

Open Access

https://doi.org/10.1051/matecconf/201928309001

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Abstract

On the basis of the analysis of the impact resistance of the application platform of the vector hydrophone is analysed , this paper designed single-stage and two-stage vibration isolation system based on rubber damper by using its characteristics of large viscous damping coefficient, low mass and easy installation and disassembly. By comparing the output signal of vector hydrophones in the state of rigid connection and with single-stage vibration isolation system, it can be seen that under different connection conditions, the signal amplitude of the impact response of the hydrophone are also different. The results of the experiment verified the effect of vibration isolation system on impact signal and the accuracy of theoretical analysis results.

Highlights

Vector hydrophone and its matrix are occasionally disturbed by sudden and narrow band impact during transportation and the progress of using[1]
It can be seen that the impact response amplitude of the single-stage damping system reaches the maximum at the resonant frequency ω0 under the impact; when the frequency is 2ω0, the amplitude of the system response is the same as the amplitude of the excitation; when the frequency is greater than 2ω0, the magnitude of the system response gradually decreases as the frequency increases
The opening angle of each lanyard is controlled to be as constant as possible, so that the impulse caused by the pendulum ball to the application platform of the vibrator is kept constant

Summary

Introduction

Vector hydrophone and its matrix are occasionally disturbed by sudden and narrow band impact during transportation and the progress of using[1]. During the process of sonar throwing, the sea surface will cause a great impact on sonar, as shown in Fig.. When the hydrophone array is operating at sea, it will occasionally collide with the hull during drag and drop, as shown in Fig.2(a)[2]. Once these shocks are too large, they will cause damage and damage such as the loss of mass blocks in the accelerometer and the overload of amplifying circuit. The rubber shock absorber has the characteristics of large viscous damping coefficient, small mass and easy to install and disassemble.

Research on shock resistance characteristics of vibration isolation system

Design and experiment of vibration reduction system

Conclusions