0 the energy condition of an object when no outside force is used on it --
1 the energy condition of an object when no outside force is used on it --
Because a quasi-static process is assumed, each of the contact states is analyzed from static equilibrium conditions.
With the static equilibrium equations, the relationship between forces and moments for maintaining each contact state is derived.
The chaotic attractor collides with the unstable fixed point (encircled by a small loop located to the lower left of the static equilibrium).
This is the case of the tokamak in static equilibrium.
An important feature of the problem is that in static equilibrium the density remains undetermined and can be prescribed arbitrarily.
In a second phase, the angular error is corrected, then in a third phase the forces / moments are close to the static equilibrium forces distribution.
This procedure is not applicable for the velocity perturbations, since we suppose a static equilibrium.
The method starts by considering an initial static equilibrium state for the structure under study, and a small incompressible perturbation with the same symmetry.
