An investigation of stess-strain state for hingeless torsion bar of helicopter rotor in geometrically nonlinear statement

Аuthors

Golovanov A. I.^1*, Mitryaikin V. I.^2**, Shuvalov V. A.^3***

1. Chebotarev Institute of Mathematics and Mechanics, Universitetskaya, 17, Kazan, 420008, Russia
2. Kazan National Research Technical University named after A.N. Tupolev, Kazan, Russia
3. Kazan Helicopters, 14, Ulitsa Tetsevskaya, Kazan, 420085, Russia

*e-mail: alexandr.golovanov@ksu.ru
**e-mail: vmitryaykin@bk.ru
***e-mail: vshuvalov@kazanheliopters.com

Abstract

A definition of the problem is suggested to analyze a stress-strain state for multilayer torsion bar of helicopter main rotor in geometrically nonlinear statement basing on finite-element method. A description of basic multilayer finite element is given as well as a design model for torsion bar of the helicopter rotor. The stress-strain state is calculated for appropriate operational loads. Numerical results obtained by means of the model are compared with experimental data and they correlate satisfactorily one with other.

Keywords:

finite element; stress-strain state; geometric nonlinearity; tracking force