Numerical investigation of free vibration on new stepped wing model

الملخص EN

Free vibration study represents one of the most important studies for complex structure such as wing structure.

In this search, a new model for wing structure was created including changing in the airfoil shape.

The wing of airfoil Naca 2414 of aluminum 2024 alloy was used to construct the wing.

Four case studies were accomplished for different airfoil shape so that the location of the airfoil is change from location to other at the chord.

Free vibration analysis for five modes was performed to obtain the vibration characteristics such as natural frequency and mode shapes.

From the results, it was found that, in general the change in the airfoil leads to (keeping same weight so the thickness and wing length remain constant) increase the vibration characteristics.

A numerical program include the analysis was achieved and added to ANSYS milieu as a new motivation.