Journal
NONLINEAR DYNAMICS
Volume 57, Issue 3, Pages 351-361Publisher
SPRINGER
DOI: 10.1007/s11071-008-9446-z
Keywords
Piecewise smooth systems; Global response characteristics; Stability analysis
Categories
Funding
- National Natural Science Foundation of China (NSFC) [10472086]
- MOE, China
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In this paper the global response characteristics of a piecewise smooth dynamical system with contact, which is specifically used to describe the rotor/stator rubbing systems, is studied analytically. A method to derive the global response characteristics of the model is proposed by studying each piece of the equations corresponding to different phases of the rotor motion, i.e., the phase without rubbing, the phase with rubbing and the phase of self-excited backward whirl. After solving the typical responses in each phase and deriving the corresponding existence boundaries in the parameter space, an overall picture of the global response characteristics of the model is obtained. As is shown, five types of the coexistences of the different rotor responses and deep insights into the interactive effect of parameters on the dynamic behavior of the model are gained.
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