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1、MechanicalEngineeringandTechnology機(jī)械工程與技術(shù),2017,6(2),133-139PublishedOnlineJune2017inHans.http://www.hanspub.org/journal/methttps://doi.org/10.12677/met.2017.62019RecognitionofStructuralDampingCoefficientofThinPlateBasedontheFrequencyResponseMatrixMethodQuanjunZhu1,XiyingFan2,Meige
2、nCao3,QingpengHan4,JianxingRen4,TianchengLi41GlobalenergyInterconnectionResearchInstitute,Beijing2ResearchInstituteofEconomicsandTechnology,StateGridShanxiElectricPowerCompany,TaiyuanShanxi3ChinaelectricpowerresearchInstitute,Beijing4CollegeofEnergyandMechanicalEngineering,Shangha
3、iUniversityofElectricPower,ShanghaithththReceived:May25,2017;accepted:Jun.7,2017;published:Jun.14,2017AbstractThedistributionofsystemdampcouldbedescribedbytheinternalfrictionandstructuredampedcoefficient.Itwasimportantfordesignofreducingvibrationofthedampingstructure.Thedamp-ingco
4、efficientofcantileverthinplatewasidentifiedbythefrequencyresponsefunctionmatrixmethodinthispaper.Theprincipleandtestprocesswereintroduced.Thetestsystemwasbuilttoidentifythedampingcoefficient.Thethinplatewasanalyzedbythesystem.Thedataoftheplaterootwereallbiggerthanthatoffreedomendn
5、omatterthedampingmatrixwasinherentfrictionorthestructuraldampingcoefficient.Theinnerfrictioncoefficientoflowfrequencybandwasbigger,whilethestructuraldampingcoefficientofhighfrequencybandwasbigger.KeywordsFrequencyResponseFunction,MatrixMethod,ThinPlate,DampingCoefficient基于頻響函數(shù)矩陣法的
6、薄板結(jié)構(gòu)阻尼系數(shù)識(shí)別123444朱全軍,樊習(xí)英,曹枚根,韓清鵬,任建興,李天成1全球能源互聯(lián)網(wǎng)研究院,北京2國網(wǎng)山西省電力公司經(jīng)濟(jì)技術(shù)研究院,山西太原3中國電力科學(xué)研究院,北京4上海電力學(xué)院能源與機(jī)械工程學(xué)院,上海文章引用:朱全軍,樊習(xí)英,曹枚根,韓清鵬,任建興,李天成.基于頻響函數(shù)矩陣法的薄板結(jié)構(gòu)阻尼系數(shù)識(shí)別[J].機(jī)械工程與技術(shù),2017,6(2):133-139.https://doi.org/10.12677/met.2017.62019朱全軍等收稿日期:2017年5月25日;錄用日期:2017年6月7日;發(fā)布日期:2017年6月14日摘要機(jī)械系統(tǒng)
7、的粘性或結(jié)構(gòu)阻尼系數(shù)可以從空間上描述系統(tǒng)的阻尼分布,這對于阻尼結(jié)構(gòu)減振設(shè)計(jì)具有重要的意義。本文研究基于頻響函數(shù)矩陣法來辨識(shí)懸臂薄板結(jié)構(gòu)系統(tǒng)阻尼系數(shù)。詳細(xì)敘述了頻響函數(shù)矩陣法的原理和測試流程。在此基礎(chǔ)上組建了辨識(shí)結(jié)構(gòu)系統(tǒng)阻尼系數(shù)的測試系統(tǒng),對薄板結(jié)構(gòu)進(jìn)行了測試分析。從識(shí)別的阻尼矩陣可以看出,無論是粘性阻尼還是結(jié)構(gòu)阻尼,薄板根部的數(shù)值均大于自由端的數(shù)值。比較不同頻帶的阻尼系數(shù),可以看出在低頻段粘性阻尼系數(shù)較大,而在高頻段結(jié)構(gòu)阻尼系數(shù)較大。關(guān)鍵詞頻響函數(shù),矩陣法,薄板結(jié)構(gòu),阻尼系數(shù)Copyright?2017byauthorsandHansPublishersI
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