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This paper examines a computer program developed to analyze the vibration of rotating machineries based on theories of vibration and multibody dynamics(MBD).Bending vibration problems of rotating machineries have generally been categorized as either linear or nonlinear.Linear problems can be formulated by standard methods and nonlinear problems can be formulated by MBD methods.In our study,nonlinear problems are treated by the use of a general-purpose computer program,RecurDyn(RD).In the program we developed,rotor bending vibration analysis(RotB) structural properties such as shafts,rotating rotary disks,unbalanced masses and foundation structures are modeled as multibody elements.Also,nonlinearities such as contact,non-symmetrical shaft effects,bearing characteristics,nonlinear restoring and damping characteristics in the bearings are taken into account.The computational results demonstrate the validity of RotB.
This paper examines a computer program developed to analyze the vibration of rotating machineries based on theories of vibration and multibody dynamics (MBD) .Bending vibration problems of rotating machineries have generally been categorized as either linear or nonlinear .Linear problems can be formulated by standard methods and nonlinear problems can be formulated by MBD methods.In our study, nonlinear problems are treated by the use of a general-purpose computer program, RecurDyn (RD) .In the program we developed, rotor bending vibration analysis (RotB) structural properties such as shafts, rotating rotary disks, unbalanced masses and foundation structures are modeled as multibody elements. Also, nonlinearities such as contact, non-symmetrical shaft effects, bearing characteristics, nonlinear restoring and damping characteristics in the bearings are taken into account. computational results demonstrate the validity of RotB.