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1、第6卷第1期中國艦船研究V01.6No.I墊!!笙蘭星魚!!翌竺!』!竺翌型21蘭壘蟲里!竺竺塵!!!:墊!!.doi:10.3969/j.issn.1673—3185.2011.叭.010磁流變阻尼器動(dòng)態(tài)特性研究杜奎1施亮2朱若寒31海軍工程大學(xué)科研部.湖北武漢4300332海軍工程大學(xué)振動(dòng)與噪聲研究所.湖北武漢4300333通信指揮學(xué)院軍事高技術(shù)教研室.湖北武漢430010摘要:為更好地研究磁流變阻尼器應(yīng)用于艦船設(shè)備抗沖擊的控制方法,需要準(zhǔn)確、全面了解其動(dòng)態(tài)力學(xué)特性。對磁流變阻尼器的動(dòng)態(tài)特性進(jìn)行試驗(yàn)研究
2、,詳細(xì)討論速度、振幅、頻率、電流等各個(gè)閡素對阻尼力的影響。結(jié)果表明.在低速區(qū)域阻尼器的阻尼力以不可控的粘滯阻尼力為主.阻尼力隨速度的變化明顯;在高速區(qū)域,阻尼力以磁流變液屈服引起的庫侖阻尼力為主,阻尼力隨速度的變化不大.而主要決定于控制電流,但是隨著電流的增大,出現(xiàn)飽和現(xiàn)象;振幅和頻率主要影響磁流變阻尼力的粘滯阻尼力,隨頻率和振幅的增加,速度的變化范圍也明顯增大。但是在相同的速度下,頻率和振幅對阻尼力的影響不明顯。為進(jìn)一步獲得磁流變阻尼器動(dòng)態(tài)特性參數(shù)及研究艦船設(shè)備抗沖擊半主動(dòng)控制方法提供了重要依據(jù).關(guān)鍵詞:
3、磁流變阻尼器:阻尼力:動(dòng)態(tài)特性中圖分類號:TB535.1文獻(xiàn)標(biāo)志碼:A文章編號:1673—3185(2011)01—52—04AnExperimentalStudyofDynamicCharacteristicsofMagnetorheologicalDamperDuKuilShi£i耐ZhuRuo-Han31OfficeofResearchandDevelopmentofNavalUniversityofEngineering,Wuhan430033,China2VibrationandNoiseInst
4、itute,NavalUniversityofEngineering,Wuhan430033,China3MilitaryHigh—techFacultyofCommunicationandCommandAcademy,Wuhan430010,ChinaAbstract:Bettercontrolovertheshockresistanceofshipboardunitsunderlinestheimportanceofappli—cationofthemagnetorheological(MR)dampe
5、r,amorepreciseandcomprehensiveunderstandingoftheimplicationofthedy’namiccharacteristicsissubstantiallyimportant.Thispaperaimstoexaminethedy-namiccharacteristicsofMRdamperthroughanexperimentalstudy.Inthestudy,avarietyoffactorsaf-feetingthedampingforceofMRda
6、mper,includingvelocity,amplitude,frequencyandcontrollingcur-rent,werediscussed.TheexperimentalresultsdemonstratethattheuncontrollableviscousdampingforceofMRdamperconstitutesthemajorcomponentofthetotaldampingforcesandvariesdistinctlywithve—locitiesatlowvelo
7、cityzone.Athighvelocityzone,howeverCoulombdampingforceisthemajorcontri-butionbymagnetorheologicalfluid,whereitvaryindistinctlywithvelocitiesdependingonthecontrolcurrent,butsaturationwilloccurwiththeincrementofcurrent.Theamplitudeandfrequencymainlyaf-feetvi
8、scousdampingforce,andthevariationrangewillincreasedistinctlywiththeincrementoffrequen-cyandamplitude,buttheydonotaffectthedampingforcedistinctlywhenatthesamevelocity.Keywords:magnetorheologicaldamper;dampingf