Nonlinear Dynamic Identification of Beams Resting on Nonlinear Viscoelastic Foundations Based on the Time-Delayed Transfer Entropy and Improved Surrogate Data Algorithm

Figure 5

Nonlinearity index of different nonlinearity degrees.

(a) Nonlinearity degree 0

(b) Nonlinearity degree 1

(c) Nonlinearity degree 2

(d) Nonlinearity degree 3

(e) Nonlinearity degree 4

(f) Nonlinearity degree 5

(g) Nonlinearity degree 6

(h) Nonlinearity degree 7