Identification of Sudden Stiffness Change in the Acceleration Response of a Nonlinear Hysteretic Structure

Table 2

Specifications of IMPSCO algorithm.

Parameter	Description	Value
mm	The total number of subpopulations	3
nn	The size of a subpopulation	10
c1	Cognitive parameter	2
c2	Social parameter	2
ρ^min	Minimum of inertia weight	0.4
ρ^max	Maximum of inertia weight	0.9
Iw	Limited times for worst record	5
S	The number of the selected excellent particles	6
Imax	The maximum iteration times	200