Research Article

Nonlinear Resonance Interaction between Conjugate Circumferential Flexural Modes in Single-Walled Carbon Nanotubes

Figure 8

Phase portraits of the conjugate modes (1,2) (a) and (1,2,c) (b). Free-free SWCNT of Table 1. Modal expansion (34). Initial conditions (35). Time period τ(1,2) = 6.07905.
(a)
(b)