Problem with blade displacement and frequency

Good morning to everyone,

My name is Antonio Mazzanti, student at the university of Bristol on a MScR focused on biaxial fatigue of wind turbine blades.

I am currently trying to work out the displacements and natural frequencies of the blade (the latter using a FFT script for the output displacement),and I currently getting wrong displacements of the blade if subjected under gravity only. I am currently using matlab(unfortunatelly...) loading a datasheet with all the properties and interpolating them, then I try to build the file input in a simple way (.txt files).Untitled13.m.IEA_15MW_240_RWT_Blade.txtMay I ask you an help if it is possible? Thank you for your kind attention, best regards, Antonio Mazzanti.