Ullah, Md. Wali
(Khulna University of Engineering & Technology (KUET), Khulna, Bangladesh., 2013-12)
A perturbation method known as "the asymptotic averaging method" in the theory of
nonlinear oscillations was first presented by Krylov and Bogoliubov (KB) in 1947.
Primarily, the method was developed only to obtain the ...