Mechanical Vibration Analysis of an UAV Wing Spar

Abstract

This paper presents the mechanical vibration analysis of a UAV (Unmanned aerial vehicle) wing spar. Theoretical and numerical calculations are performed by considering the spar as a cantilever beam. The model is created and modal analyses are performed by using the MATLAB software. The natural frequencies and the related mode shapes are obtained. The results of theoretical calculations linear, nonlinear and random vibration of both single and multiple degree of freedom (DOF) system are graphically presented. The study aims to illustrate vibration tendencies of the wing during flight.