 Wysłany: Nie 3:40, 08 Maj 2011 Temat postu: ed hardy lippis The cantilever based on wavelet fi |
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The cantilever based on wavelet finite element crack identification erecentdevelopments. JournalofComputationalandAppliedMathmatics, 2001; 128:133-18513NandwadaBP,Abercrombie France, MaitiSK. Detectionofthelocationandsizeofacrackinsteppedcantileverbeamasedonmea-surementsofnaturalfrequencies. JournalofSoundandVibration,Ed Hardy mexico, 1997; 203 (3) :435-44614ChinchalkarS. Determinationofcracklocationinbeamsusingnaturalfrequencies. JournalofSoundandVibra-tion,mulberry tasker, 2001; 247 (3) :417-429Identificati0nofCracksinCantileverBeamBasedonWaveletFiniteElementMethodsLiBingChPXuefengHuQiaoHeZhengJia (SchoolofMechanicalEngineering, Xi'anJiaotongUniversityXi'an,franklin & marshall, 710049) Inthispaper, theblemiStodetermineforwardandinverseproblemsinthedetectionofcracksincantileverbeamarestudied. TheforthreenaturalfrequenciesofthecrackedbeamtOgivethelocationandsizeofthecracknverseproblemistOdeterminethelocationandsizeofthecracktOgivethefirstfewnaturalfrequenciesofthecrackedbeam. Basedonwaveletfiniteelementmethodsthemodelofacrackedcantileverbeamwithrectangularcross-sectionasanexampleisconstructedandthefirstthreenaturalfrequenciesareobtained. Thecrackismodeledasarotationalspring. AfastalgorithmispresentedtOsolvetheinverseproblem. Thenthegraphsofspringstiffnessversuscracklocationareplot-tedforeachnaturalfrequency. Thepointofintersectionofthecurvesgivesthelocationofthecrack. Thenumericalexampleindicatesthatcurrentmethodiseffectiveandaccurate. ThisstudyprovidesanewmethodfortheprognosisanddiagnosisoferacksinstrilcturesKeywords: beam; crack; identification; wavelet; finiteelementmethods Bing male first author , doctoral students in December 1976 . Phone : (029) 82667963; E-mail: bli @ mailst. xjtu. edu. cn 相关的主题文章： abercrombie günstig PS Huaguang UV ink printed ve hollister Vibration -based non-destructive testing in Offsho tory burch London Taiwan's first energy-saving air |
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