船电技术
船電技術
선전기술
2012年
12期
4-7
,共4页
宋金明%张乔斌%尹成彬%吴开峰
宋金明%張喬斌%尹成彬%吳開峰
송금명%장교빈%윤성빈%오개봉
浮筏%隔振器参数%驻波效应%FEM
浮筏%隔振器參數%駐波效應%FEM
부벌%격진기삼수%주파효응%FEM
floating raft%isolator parameters%standing wave effect%FEM
建立了船用浮筏的有限元模型，计算分析了隔振器刚度、阻尼对浮筏隔振性能的影响，定性分析了驻波效应对隔振效果的影响。结果表明：隔振器刚度的变化主要影响系统低频部分的隔振性能，对高频部分影响不大，增加隔振器刚度会降低浮筏的隔振性能；隔振器阻尼的增加不利于浮筏减振降噪，尤其在高频段；隔振器的高频驻波效应对浮筏的隔着效果造成严重影响，且频率越高影响越大。
建立瞭船用浮筏的有限元模型，計算分析瞭隔振器剛度、阻尼對浮筏隔振性能的影響，定性分析瞭駐波效應對隔振效果的影響。結果錶明：隔振器剛度的變化主要影響繫統低頻部分的隔振性能，對高頻部分影響不大，增加隔振器剛度會降低浮筏的隔振性能；隔振器阻尼的增加不利于浮筏減振降譟，尤其在高頻段；隔振器的高頻駐波效應對浮筏的隔著效果造成嚴重影響，且頻率越高影響越大。
건립료선용부벌적유한원모형，계산분석료격진기강도、조니대부벌격진성능적영향，정성분석료주파효응대격진효과적영향。결과표명：격진기강도적변화주요영향계통저빈부분적격진성능，대고빈부분영향불대，증가격진기강도회강저부벌적격진성능；격진기조니적증가불리우부벌감진강조，우기재고빈단；격진기적고빈주파효응대부벌적격착효과조성엄중영향，차빈솔월고영향월대。
The finite element model of marine floating raft is build. The effects of isolator parameters on vibration isolation performance of floating raft is analyzed, and the standing wave effect in high frequency is introduced and its influence on isolation performance is analyzed. The results show that the stiffness of isolator affect the performance in low frequency mostly and have little effect in high frequency, the isolation performance will decrease with the increase of isolator stiffness, The increase of isolator damping will have negative effect on isolation performance; Standing wave effect have enormous negative influence on isolation performance, the influence will be bigger with the increase of frequency.
