中国舰船研究2016，Vol.11Issue(6)：22-27,6.DOI:10.3969/j.issn.1673-3185.2016.06.004
潜艇艏端耐压舱壁构型对声目标强度的影响
Effect analysis for the shape of submarine bow pressure bulkhead upon the acoustic target strength
摘要
Abstract
High level of acoustic Target Strength(TS)from the bow of submarine forms great threat to submarines' acoustic stealth. According to the TS contribution curves,it's adduced that the bow pressure bulkheads are the main source of a submarine's bow target strength. There are two types of bow pressure bulkhead:ellipsoidal and planar bulkheads. And the TS of a rigid plane is much bigger than that of a ellipsoidal one. Based on Plane Element Method(PEM),the relationship of a submarine's bow TS with the bulkheads' curvature is analyzed,and logarithmic fitting is made by calculating the TS of a series of ellipsoidal pressure bulkhead with different curvatures. Then,the acoustic scattering pressure images near pressure bulkhead are obtained via indirect Boundary Element Method(BEM),and it suggests that the scattering pressure field of ellipsoidal surfaces have less directivity index compared to those of the planar bulkhead,which results in significant lower TS level(more than 10 dB). If the curvature is bigger than a certain value,the bow TS of an ellipsoidal pressure bulkhead tends to be stable.关键词
目标强度/耐压舱壁/曲率/板块元/边界元Key words
target strength/pressure bulkhead/curvature/Plane Element Method(PEM)/Boundary Element Method(BEM)分类
交通工程引用本文复制引用
胡泊,张均平..潜艇艏端耐压舱壁构型对声目标强度的影响[J].中国舰船研究,2016,11(6):22-27,6.基金项目
国家部委基金资助项目 （）
