Vibroacoustical Analysis of Multiple-Layered Structures with Viscoelastic Damping Cores

Table 4

Comparison of modal results with ANSYS simulation.

Number of mode	Damping model	ANSYS 3D	FEM model of this research
		No damping	3M-ISD110-45°C; 6-term Biot
1st	Frequency	6.4803 Hz	4.5834 Hz
	Loss factor		0.7916
2nd	Frequency	14.338 Hz	13.9489 Hz
	Loss factor		0.6824
3rd	Frequency	27.989 Hz	27.7721 Hz
	Loss factor		0.5632