船舶与海洋工程学报（英文版）
船舶與海洋工程學報（英文版）
선박여해양공정학보（영문판）
JOURNAL OF MARINE SCIENCE AND APPLICATION
2009年
4期
291-297
,共7页
MR阻尼器%减振%抗冲击%隔离器
MR阻尼器%減振%抗遲擊%隔離器
MR조니기%감진%항충격%격리기
magnetorheological fluid damper%vibration reduction%shock resistance%isolator
随着船舶技术的发展,现代船舶对船用隔离器系统提出了越来越高的要求,即船用隔离器系统应同时具备低频减振和高频抗冲击的能力,这是传统的船用减振器系统所无法做到的,为了解决此问题,本文提出了一种新的船用隔离器系统,该系统由钢丝绳弹簧和磁流变阻尼器相并联组成.文中对该船用隔离器系统的减振和抗冲击性能进行了模型试验研究.减振试验的激振力频率为1-15 Hz,力幅为2.94-11.76 kN;冲击试验的最大冲击输入加速度为20 g,脉宽为10 ms,减振试验和冲击试验均采用MTS液压加载系统来进行.试验结果表明,该船用隔离器系统具有较好的减振效果,使用了MR阻尼器后系统得共振峰值被明显的削弱;在冲击试验中,冲击响应的衰减速度随着MR阻尼器的阻尼增加而明显加快,但是MR阻尼器再冲击瞬间的出力特性明显与低频振动情况下不同,MR阻尼器的出力表现为受控制电流强度影响不大.
隨著船舶技術的髮展,現代船舶對船用隔離器繫統提齣瞭越來越高的要求,即船用隔離器繫統應同時具備低頻減振和高頻抗遲擊的能力,這是傳統的船用減振器繫統所無法做到的,為瞭解決此問題,本文提齣瞭一種新的船用隔離器繫統,該繫統由鋼絲繩彈簧和磁流變阻尼器相併聯組成.文中對該船用隔離器繫統的減振和抗遲擊性能進行瞭模型試驗研究.減振試驗的激振力頻率為1-15 Hz,力幅為2.94-11.76 kN;遲擊試驗的最大遲擊輸入加速度為20 g,脈寬為10 ms,減振試驗和遲擊試驗均採用MTS液壓加載繫統來進行.試驗結果錶明,該船用隔離器繫統具有較好的減振效果,使用瞭MR阻尼器後繫統得共振峰值被明顯的削弱;在遲擊試驗中,遲擊響應的衰減速度隨著MR阻尼器的阻尼增加而明顯加快,但是MR阻尼器再遲擊瞬間的齣力特性明顯與低頻振動情況下不同,MR阻尼器的齣力錶現為受控製電流彊度影響不大.
수착선박기술적발전,현대선박대선용격리기계통제출료월래월고적요구,즉선용격리기계통응동시구비저빈감진화고빈항충격적능력,저시전통적선용감진기계통소무법주도적,위료해결차문제,본문제출료일충신적선용격리기계통,해계통유강사승탄황화자류변조니기상병련조성.문중대해선용격리기계통적감진화항충격성능진행료모형시험연구.감진시험적격진력빈솔위1-15 Hz,력폭위2.94-11.76 kN;충격시험적최대충격수입가속도위20 g,맥관위10 ms,감진시험화충격시험균채용MTS액압가재계통래진행.시험결과표명,해선용격리기계통구유교호적감진효과,사용료MR조니기후계통득공진봉치피명현적삭약;재충격시험중,충격향응적쇠감속도수착MR조니기적조니증가이명현가쾌,단시MR조니기재충격순간적출력특성명현여저빈진동정황하불동,MR조니기적출력표현위수공제전류강도영향불대.
Isolator systems on ships should ideally be able to simultaneously reduce low frequency vibration response and high frequency shock response. Conventional isolator systems are unable to do so. To solve the problem, a new style isolator system was created. This isolator system consists of a steel coil spring component and a magnetorheological(MR)damper component working in parallel. Experiments on this isolator system were carried out, including tests of vibration reduction and shock resistance. The vibration load frequencies were set from 1-15 Hz, and force amplitudes from 2.94～11.76kN. The maximum shock input acceleration was 20 g, and impulse width was 10ms. Both the vibration and shock loads were applied using MTS Systems Corporation's hydraulic actuators. The experimental results indicated that the isolator system performs well on system vibration response, with resonance humps of the vibration response obviously reduced after using the MR damper. For the shock experiment, the attenuation of shock response was much faster with increased MR damping. The MR damper's effect on shock moments was very different from its performance in vibration mode. The correlation between MR force and control current was not as evident as it was during vibration loads.
