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Frequency response function based on test Identification of Joint Parameters

lmodelimprovementUS-ingfrequencyresponsefunctions. MechanicalSystemsandSignalProcessing, 1994,8 (4) :437-4587 Yuan Yaxiang , Sun Wenyu . Optimization theory and methods ,[link widoczny dla zalogowanych], Beijing : Science Press ,1997:373-4O48LimTW. SubmatrixapproachtOstiffnessmatrixcor-rectionusingmodaltestdata. AIAAJournal, 1990; 28 (6) :1123-113O9 Chang Yun true,[link widoczny dla zalogowanych], Cao Fuxin . Elasticity and finite element method . Beijing : China Railway Press ,[link widoczny dla zalogowanych],1989:642-643IdentificationofJointParametersofStructuresUsingMeasuredFrequencyResponseFunctionsHanJunChenHuaihaiNiHongwei. BaoMing (InstituteofVibrationEngineeringResearch. NanjingUniversityofAeronautics & AstronauticsNanjing,[link widoczny dla zalogowanych], 210016) (TheFirstScientificResearchInstituteEngineerCorps, GSHQ, ChinesePLAWuxi, 214035) AbstractThefiniteelementmodelofthesemi-rigidconnectionbetweenmembersofframestructuresisestablishedinthispaper, anditisappliedtOthemodelofjointparametersidentification. Amethodforidentifyingjointpropertiesofstructuresispresentedbycombiningtheexperimentallyobtainedincompletefrequencyresponsefunctions (FRFs) withthesubstructuremathematicalmodel,[link widoczny dla zalogowanych], whichisnormallyafiniteelementidealizationexcludingundeterminedjointproperties. Ageneralmethodforseparatingvariablecoefficientmatrixisproposedusingthesubmatrixapproach. Intheprocess, thetrust - regionalgorithmisemployedtOsolvethenonlinearleastsquareproblem. Theaccuracyandfeasibilityoftheproposedmethodisde-monstratedbyanexample. Theresultindicatesthattheproposedmethodisrobustintheidentificationofthejointphysicalparameters · Keywords: joint; frequencyresponsefunctions; parametersidentification; trustregionalgorithm the first of the men and Jun Han , Ph.D. , in August 1966 students. Phone ; (025) 4893082; E-mail: hanjun2002 @ msn. com.

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