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Figure 3.23 Normalized divergence dynamic pressure for an elastically uncoupled, swept wing with GJ/EI = 0.2 and ejl = 0.02.

positive bending deflection will be accompanied by a nose-up twist of the wing, which is normally destabilizing for cases with the elastic axis behind the aerodynamic center. Using the coupled constitutive law, the equations of equilibrium become

(GJ6 — Kw")' — —qecda — qc2cmac + Nmgd,

Let us again consider a wing that is clamped at the root and free at the tip, so that the boundary conditions that must be imposed on the solution are

y = 0:

0 0

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