摘要
为了解决采用悬挂探头磁场测量法进行舰船磁场测量时磁探头受到海流作用产生的位置偏移对测量精度产生较大影响的难题,并考虑对磁探头的外形及结构进行优化设计问题,提出了一种海流作用下磁探头的偏移量计算及其外形结构优化设计方法。首先建立了悬挂探头磁场测量法的等效数学模型;然后根据流体力学方法计算出电缆以及不同外形的磁探头在海流中所受的总阻力;进而采用有限单元分割法求出各种外形的磁探头在海流中的位置偏移;分析了磁探头的偏移量随质量的变化规律,从而可以确定最优的磁探头形状与合适的探头结构。该方法可用于指导舰船消磁勤务中测磁探头的设计和制造工作。
In order to solve the influence of the position deviation of hanging magnetic probe subjected to ocean current on the ship's magnetic field measurement accuracy and design the magnetic probes with optimal shape and structure,a calculation method for the position deviation of magnetic probes and a optimal design method for the probe shape and structure are proposed.Firstly,the equivalent mathematical model of hanging probes is established.Based on the hydromechanics method,the total resistance applying on the cables and the different shapes probes in ocean current are calculated.Then,by using finite element method,the position deviations of magnetic probes are calculated.The rule of the probe deviation varying with its mass is analyzed.Therefore,the probe with optimal shape and structure can be determined.These methods can be used to guide the design and manufacture of magnetic probes in ship degaussing service.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2011年第3期370-377,共8页
Acta Armamentarii
基金
国防重点科研课题资助项目
关键词
流体力学
磁场测量
有限单元法
探头
偏移量
水动力
fluid dynamics
magnetic field measure
finite element partition
probe
position excursion
hydrodynamic