 Wysłany: Nie 3:44, 08 Maj 2011 Temat postu: abercrombie et fitch Vibration -based non-destruct |
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| Vibration -based non-destructive testing in Offshore Platform
portLA a 13074-MS. 199611AnsysVersion5.6. ANSYSInc. , 275TechnologyDrive, Canonurg,christian louboutin sko, PA1531712RenWei-Xin, RoeckGDe. Discussiononstructuraldamagedetectionfrommodalstrainenergychange. JournalofEngineeringMechanics · ASCE, 2002; 128 (3) :376-377NondestructiveDamageDetectioninOffshorePlatformStructureUsingVibrationMonitoringYangHezhenLiHuajunHuangWeiping (EngineeringCollege.OceanUniversityofChinaQingdao, 266071) AbstractInthispapernondestructivedamagedetection (NDD) inlarge/complexstructuresisinvestigatedbasedonvibrationmonit0ring. Anewmethodofdamagedetectionispresented,abercrombie et fitch, whichutilizesaninvariancepropertyofelementmodalstrainen-erRY. ThetheoryofNDDforframetypestructureisformulated. Thismethodiasedonassigningelementmodalstrainen-ergytotwoparts,oakley solbriller, anddefinestwodamagedetectionindexes. Oneiscompressionmodalstrainenergychangeratio (CMSECR). theotherisflexuralmodalstrainenergychangeratio (FMSECR). ThepresentmodalstrainenergyareobtainedbvincomP1etemoda1shapeandstructuralstiffnessmatrix. Structurehealthmonitoringisthusaccomplishedvlamonitoringtheelementa1CMSECRandFMSECR. Severaldamagecasesaresimulatedwithanoffshoreplatformnumericalmodel (FEM),tory burch London, andpresentedtoillustratetheutilityoftheproposedmethod. Accordingtotheresults,abercrombie en fitch, theproposedmethodisshowntobeeffectiveforthecomplexstructuraldamagedetectionandhassatisfactoryprecision. Keywords: structurevibration; nondestructivedamagedetection; offshoreplatformstructure; modalstrainenergy; stuc-turalhealthmonitoring Young and the first vibration of the male , Ph.D. , December 1977 students. Tel : (0532) 5903076; E-mail: yanghezhen ~ hotmail'comrr-T 相关的主题文章： franklin & marshall The sixth in China Packaging F Franklin and Marshall uk High-performance packagin ed hardy lippis A variety of comparison and evalua |
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