Influence of Core Thickness and Boundary Condition on the Modal Characteristics of Composite Structure with Metallic Damping Core

Table 5

First three-order modal shapes of the baseplate and composite structures under different boundary conditions.

Boundary condition	Structure	1^st order	2^nd order	3^rd order
C-C-F-F	Steel plate
	Composite structure
C-C-C-F	Steel plate
	Composite structure
C-C-C-C	Steel plate
	Composite structure