Application of the finite element method for calculation of nonlinear vibrations of a rotating blade

Аuthors

Grishanina T. V.^*, Kwak J.

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

*e-mail: t.grishanina@mai.ru

Abstract

Mathematical model for calculation of vibrations of a rotating blade in the transverse plane is developed using the finite element method. The nonlinear and linearized equations of the blade vibrations are obtained assuming that the elastic blade axis is nonextensible. The calculation examples of the response are given for the absolutely rigid and hinged connections of the blade and the rotor hub in the case of kinematic impact on the hub.

Keywords:

blade, finite element method, nonlinear vibrations