A New Simultaneous Identification of the Harmonic Excitations and Nonlinear Damping of Forced Damped Nonlinear Oscillations: A Parametric Approach

Table 3

Identified coefficients compared with the exact ones: (𝑡^ze_𝐽)_𝑖—the transient region, (𝑡^ze_acc)_𝑖—the steady-state region (𝑖=1,2).

	𝑐1	𝑐2	Γ1	Γ2
Exact	4	2	1	2
Identified	3.9702	2.0948	0.9988	2.0003
Error (%)	0.75	4.74	0.1	0.02