Approximate Super- and Sub-harmonic Response of a Multi-DOFs System with Local Cubic Nonlinearities under Resonance

Figure 5

Comparison of the time response of the first four modes for different excitation frequency in rad/s (a) Ω=2.175, (b) Ω=2.275, (c) Ω=2.375, and (d) Ω=2.475.

(a)

(b)

(c)

(d)