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gnuLAB2 rib FEM structural analysis

 
We conducted a finite element model to analyze the stresses and strains of a rib membrane, for various angles of attack.

The results are not even approximate, until now. I use a discretization type by quadrangular shell elements, acting as menbrane and plate.
The loads to be applied are puntual forces on the nodes of the contour, with numeric value and direction indicated by an XFLR5 analysis.
Furthermore, I should study better the mechanical properties of ripstop nylon material.

Finally, the boundary conditions consist of four thin lines (beam element) that connect the four anchor points of the rib, with a point of the main
karabiner, in which I impose all rotational and translational movements zero. All analysis in 2D plane.


gnu airfoil FEM quad shell discretization
Fig 1. Shell F12

MMIN
Fig 2. Shell MMIN

V23
Fig. 3. V23 shell shear




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