Considering aeroelastic flutter, when an eigenfrequency of the wing meets with an aerodynamic frequency, the commonly mentioned solutions make sense: avoid the convergence zone by limiting speed, or by increasing the wing's eigenfrequency trough stiffness, reduced weight, or reduced span.
I'll use the analogy with the conventional spring as it makes things easier to understand for me.
So Wikipedia says: "Prediction involves making a mathematical model of the aircraft as a series of masses connected by springs and dampers which are tuned to represent the dynamic characteristics of the aircraft structure. [...] Small carefully chosen changes to mass distribution and local structural stiffness can be very effective in solving aeroelastic problems."
My 3 questions are:
1: Do I understand correctly that with this approach, the wing will act similarly to the following model, where the motion is rather chaotic?
2: This should have no certain frequency. Does this mean flutter is avoided?
3: Does this mean flutter can be avoided by redistributing mass around the wing, without increasing stiffness or reducing mass?