title: Determination of limit cycles for strongly nonlinear oscillators.
abstract: An innovative approach to finding limit cycles is proposed and illustrated on the van der Pol equation. The technique developed in this Letter is similar to the Ritz's method in variational theory. The present theory can be applied to not only weakly nonlinear equations, but also strongly nonlinear ones, and the obtained results are valid for the whole solution domain.
authors.affiliation: College of Science, Shanghai Donghua University, 1882 Yan'an Xilu Road, Shanghai 200051, People's Republic of China. jhhe@dhu.edu.cn
authors.forename: Ji-Huan
authors.initials: JH
authors.lastname: He