拖曳声纳阵隔振模块性能实验分析

Experimental Study on the Vibration Level Difference of Vibration Isolation Modules in a Towed Array Sonar

在现代反潜、海洋水文和资源勘探测量中,拖曳线列阵声纳得到了越来越广泛的应用。为了进一步提高拖曳式声纳的工作性能,必须在声阵模块前、后插入性能优良的隔振模块。本文对隔振模块在水下的隔振性能进行了测量。结果表明:隔振模块的隔振性能与其长度、所受到的拉力及激振力的频率和幅值有关。其中隔振模块的长度和激振力的频率是影响隔振效果的主要因素。随着隔振模块长度的增加,其隔振效果将变得越来越好。在长度、激振力相同的情况下,拉力小时隔振效果较好。在其他条件相同时,激励频率越大,隔振效果越好。在相同拉力和激振力作用下,隔振模块的隔振效果的起始频率随隔振模块的长度增加而减小。

The towed array sonar is used extensively in modern antisubmarine,ocean geologic and resources surveying.In order to reduce and isolate vibration from stern arrays wign and towed cabled shaking,Vibration Isolation Modules(VIM)are i ncorporated both ahead and astern of acoustic modules.In this paper,the vibratio n isolation capability of VIM in the water is studied by experimental method.Ana lysis shows that Vibration Level Difference of VIM is affected by the length,ten sion,exciting force frequency and amplitude.Among these parameters,the length an d exciting force frequency are main factors.Vibration Level Difference increases when the length of VIM become longer.In the condition of the same length and ex cited force frequency,small tension has better isolation effect.When other condi tions are same,the great excited force frequency,the better isolation effect.Wit h the same tension and excited force,VIM's isolation effect's starting frequency decrease with increasing of VIM's length.