Summary
This paper examines the escape dynamics of a harmonically excited, one-degree-of-freedom (DoF) bistable mechanical system. The study focuses on validating the V-shaped critical force-frequency curve, influenced by concurrent escape mechanisms: the maximum mechanism (MM) and the saddle mechanism (SM). We investigate the effects of varying initial excitation phases and viscous damping on this curve. Given the minimal damping of the system, the transient dynamics, significantly impacted by the initial phase, is crucial in the escape process.
