Effect of imperfections on pseudo-bistability of viscoelastic domes

Snap-through instability of viscoelastic materials is known to generate novel behavior, featured as pseudo-bistability, i.e. the capability of a system in maintaining a deformed configuration for a certain period of time after removal of an external load, followed by snapping back to its initial configuration automatically, due to the combination of time-dependent mechanical property and geometric nonlinearity of the system. This work...