scholarly journals Approximating the amplitude and form of limit cycles in the weakly nonlinear regime of Liénard systems

2007 ◽  
Vol 34 (4) ◽  
pp. 1307-1317 ◽  
Author(s):  
J.L. López ◽  
R. López-Ruiz
2000 ◽  
Vol 10 (05) ◽  
pp. 971-980 ◽  
Author(s):  
R. LÓPEZ-RUIZ ◽  
J. L. LÓPEZ

Liénard systems of the form [Formula: see text], with f(x) an even continuous function, are considered. The bifurcation curves of limit cycles are calculated exactly in the weak (ε → 0) and in the strongly (ε → ∞) nonlinear regime in some examples. The number of limit cycles does not increase when ε increases from zero to infinity in all the cases analyzed.


2000 ◽  
Author(s):  
Hsien-Hung Wei ◽  
David S. Rumschitzki

Abstract Both linear and weakly nonlinear stability of a core annular flow in a corrugated tube in the limit of thin film and small corrugation are examined. Asymptotic techniques are used to derive the corrugated base flow and corresponding linear and weakly nonlinear stability equations. Interesting features show that the corrugation interaction can excite linear instability, but the nonlinearity still can suppress such instability in the weakly nonlinear regime.


2012 ◽  
Vol 2012 ◽  
pp. 1-27 ◽  
Author(s):  
Yanqin Xiong ◽  
Maoan Han

We consider a class of discontinuous Liénard systems and study the number of limit cycles bifurcated from the origin when parameters vary. We establish a method of studying cyclicity of the system at the origin. As an application, we discuss some discontinuous Liénard systems of special form and study the cyclicity near the origin.


2018 ◽  
Vol 51 (33) ◽  
pp. 127-131
Author(s):  
Thomas Lathuilière ◽  
Giorgio Valmorbida ◽  
Elena Panteley

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