  In a dissipative dynamic system driven by an oscillating force, a strong
nonlinear highly oscillatory friction force can create a quasi-steady tug,
which is always directed opposite to the ponderomotive force induced due to a
spatial inhomogeneity of oscillations. When the friction-induced tug exceeds
the ponderomotive force, the friction stabilizes the system oscillations near
the maxima of the oscillation spatial amplitude.
