船海工程
船海工程
선해공정
SHIP & OCEAN ENGINEERING
2014年
2期
146-149
,共4页
方媛媛%肖英龙%张国红%李亚繁%戚朋哲
方媛媛%肖英龍%張國紅%李亞繁%慼朋哲
방원원%초영룡%장국홍%리아번%척붕철
舰船设备%辐射噪声%减振降噪
艦船設備%輻射譟聲%減振降譟
함선설비%복사조성%감진강조
warship equipment%radiation noise%vibration and noise reduction
根据船舶设计中提出的动力装置减振降噪的要求,以某船舶中经过不同方式隔振设计的多台辅机设备为研究对象,建立该舱室的有限元模型。通过数值计算分析不同隔振装置的减振性能。结果表明:用简化为弹簧和阻尼器的隔振器来模拟实际橡胶隔振器,隔振效果在高频段有一定差异,低频段影响不大。为了改进隔振效果,可以适当增大隔振体系安装平台的厚度及中间质量体的质量,并综合考虑对机组共同激励的影响。
根據船舶設計中提齣的動力裝置減振降譟的要求,以某船舶中經過不同方式隔振設計的多檯輔機設備為研究對象,建立該艙室的有限元模型。通過數值計算分析不同隔振裝置的減振性能。結果錶明:用簡化為彈簧和阻尼器的隔振器來模擬實際橡膠隔振器,隔振效果在高頻段有一定差異,低頻段影響不大。為瞭改進隔振效果,可以適噹增大隔振體繫安裝平檯的厚度及中間質量體的質量,併綜閤攷慮對機組共同激勵的影響。
근거선박설계중제출적동력장치감진강조적요구,이모선박중경과불동방식격진설계적다태보궤설비위연구대상,건립해창실적유한원모형。통과수치계산분석불동격진장치적감진성능。결과표명:용간화위탄황화조니기적격진기래모의실제상효격진기,격진효과재고빈단유일정차이,저빈단영향불대。위료개진격진효과,가이괄당증대격진체계안장평태적후도급중간질량체적질량,병종합고필대궤조공동격려적영향。
According to the requirements to reduce vibration and noise of power device in ship design , taking cabin auxiliary equipments in different ways of isolating vibration design as the object of study , the finite element model of the cabin was estab-lished to analyze vibration isolation property of different vibration isolation system numerically .The results indicated that one-di-mensional spring element simplified can properly simulate the actual rubber vibration isolator on low frequency bands , but some differences exist in the high frequency band;and increasing thickness of flat , hull and platform can improve the effect of vibration isolation obviously .The influence of all equipments excitation is considered comprehensively .