Nonlinear Dynamics of a Duffing-Like Negative Stiffness Oscillator: Modeling and Experimental Characterization

Table 2

Identified coefficients with NSI for the two reference positions.

Reference position	Coefficient		Coefficient		Coefficient
	Value		Value		Value
	7.3510^5	32	−6.4510^4	34	−4.76	49
	7.8610^5	29	5.8110^4	29	−4.39	37