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https://hdl.handle.net/2142/86810
Description
Title
Periodic Delay Effects on Cutting Tool Dynamics
Author(s)
Choi, Youn-Sun
Issue Date
2003
Doctoral Committee Chair(s)
Muncaster, Robert G.
Department of Study
Mathematics
Discipline
Mathematics
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Mechanical
Language
eng
Abstract
We consider a delay equation whose delay is perturbed by a small periodic fluctuation. In Particular, it is assumed that the delay equation exhibits a Hopf bifurcation when its delay Is unperturbed. The periodically perturbed system exhibits more delicate bifurcations than a Hopf bifurcation. We show that these bifurcations are well explained by the Bogdanov-Takens bifurcations when the ration between the frequencies of the periodic solution of the Unperturbed system (Hopf bifurcation) and the external periodic perturbation is 1:2. Our anaylsis is based on center manifold reduction theory.
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