“…For instance, in the case when σ is identically zero, equation (1.1) becomes an equation with polynomial nonlinearity which arises in aeroelasticity modeling (see, for example, [14,15]), and the problem with (or without) damping, memory, timedelay etc. were studied extensively (see [17,21,25,26,27,33,34,37,40,55,44] and references therein for the topics on well-posedness, global existence, finite time blow-up, global attractor etc. ).…”