The integral term represents aerodynamic memory (e.g., from wake vorticity). For subsonic compressible flow, the provides (\mathbfQ(k)) in the frequency domain. 3. Static Aeroelasticity: Divergence Setting inertia and damping to zero leads to static equilibrium:
[ \mathbfM\ddot\mathbfu + \mathbfC\dot\mathbfu + \mathbfK\mathbfu = q_\infty \left( \mathbfA_0 \mathbfu + \mathbfA_1 \dot\mathbfu + \int_0^t \mathbfG(t-\tau)\dot\mathbfu(\tau) d\tau \right) ] theoretical and computational aeroelasticity pdf
[ \mathbfK \mathbfu = q_\infty \mathbfA_0 \mathbfu ] The integral term represents aerodynamic memory (e
[ \mathbfM\ddot\mathbfu + \mathbfC\dot\mathbfu + \mathbfK\mathbfu = \mathbff_a(t) ] theoretical and computational aeroelasticity pdf
[ \left[ -\omega^2 \mathbfM + i\omega \mathbfC + \mathbfK - q_\infty \mathbfQ(i\omega) \right] \hat\mathbfu = 0 ]