Optimal Design of Pressure-resistant Spherical Shell for Co-vibrating Vector Hydrophone

doi:10.3969/j.issn.1000-1093.2021.08.019

Abstract

Abstract: For the structural pressure resistance problem of deep-water vector hydrophones, the formula of maximum stress of spherical shell under external pressure was derived, and the influences of material, radius and thickness of co-vibrating spherical vector hydrophone on its acoustic performance and pressure-resistance were analyzed. Based on this, a design method of thin pressure-resistant spherical shell with minimum average density was given. The applicability of several commonly used deep sea engineering materials was studied, and a co-vibrating spherical vector hydrophone with working depth of 3 000 m was designed and developed by using 7075T6 aluminum alloy. The finite element simulation of vector hydrophone was carried out, and the sensitivity, directivity and pressure-resistance were tested experimentally. Results show that the vector hydrophone provides well cosine directivity and has a sensitivity of -188 dB at 500 Hz and a pressure resistance of 37.5 MPa, and the design method of thin pressure-resistant spherical shell with minimum average density and the engineering prototype design scheme are reasonable and practicable.

Key words: co-vibratingvectorhydrophone, thinpressure-resistantsphericalshell, minimumaveragedensity, finiteelementsimulation

CLC Number:

TB565⁺.1

WANG Chao， WANG Wenlong， SUN Qindong， SUN Wenqi. Optimal Design of Pressure-resistant Spherical Shell for Co-vibrating Vector Hydrophone[J]. Acta Armamentarii, 2021, 42(8): 1744-1752.

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