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Abstract: The
characteristics of coupled bending-torsional- pendular coupling
vibrations of rotary shaft systems are studied to improve the safety of
rotary shaft systems. It is deduced that the general differential
equation of bending-torsional-pendular coupling vibration about rotor
with the gyroscopic moment. On the basis of this equation, the general
differential equations of coupled bending,torsional and pendular
nonlinear vibration about rotor with unbalance character and rubbing
character are deduced. The bifurcation and chaos behavior especially the
influence on bifurcation and chaos behavior of impact and rubbing fault
rotor system caused by the parameters of rotor rotating speed are
analyzed by using the numerical value analysis method. The analysis
results caw provide the theoretical bases for safely operating and
identifying the combination-resonance fault of the rotors.
Key words: Rubbing Nonlinear Coupling Vibrations
Bending-torsional-pendular
CLC No: TH113
国家自然科学基金资助项目(59835050). Received 20060212, received in revised form 20061009
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