Damage Detection of Laminated Rubber Bearings Based on the Antiresonance Frequencies of Periodic Structure and Its Sensitivity Analysis

Table 1

The geometric and material parameters of periodic rubber–steel structure.

Parameters	Values
Static shear modulus (G)	1 × 10^6 N/m^2
Cross section diameter of the rubber layer (φ)	0.8 m
Density of the rubber material (ρ)	1000 kg/m^3
Thickness of each rubber layer (l)	0.01 m
Mass ratio of steel to rubber (θ)	2
The total number of cells (NP)	10