简介：Thispaperexaminesacomputerprogramdevelopedtoanalyzethevibrationofrotatingmachineriesbasedontheoriesofvibrationandmultibodydynamics(MBD).Bendingvibrationproblemsofrotatingmachinerieshavegenerallybeencategorizedaseitherlinearornonlinear.LinearproblemscanbeformulatedbystandardmethodsandnonlinearproblemscanbeformulatedbyMBDmethods.Inourstudy,nonlinearproblemsaretreatedbytheuseofageneral-purposecomputerprogram,RecurDyn(RD).Intheprogramwedeveloped,rotorbendingvibrationanalysis(RotB)structuralpropertiessuchasshafts,rotatingrotarydisks,unbalancedmassesandfoundationstructuresaremodeledasmultibodyelements.Also,nonlinearitiessuchascontact,non-symmetricalshafteffects,bearingcharacteristics,nonlinearrestoringanddampingcharacteristicsinthebearingsaretakenintoaccount.ThecomputationalresultsdemonstratethevalidityofRotB.
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