Z. Xu et al., SEPARATRICES AND LIMIT-CYCLES OF STRONGLY NONLINEAR OSCILLATORS BY THE PERTURBATION-INCREMENTAL METHOD, Nonlinear dynamics, 11(3), 1996, pp. 213-233
The perturbation-incremental method is applied to determine the separa
trices and limit cycles of strongly nonlinear oscillators. Conditions
are derived under which a limit cycle is created or destroyed. The lat
ter case may give rise to a homoclinic orbit or a pair of heteroclinic
orbits. The limit cycles and the separatrices can be calculated to an
y desired degree of accuracy. Stability and bifurcations of limit cycl
es will also be discussed.