Vibroacoustical Analysis of Multiple-Layered Structures with Viscoelastic Damping Cores

Table 3

Comparison of results for simply supported boundary condition.

Number of mode	Damping model	Hao [19]	FEM model of this paper
		ISD110-45°C Arrhenius	ISD110-45°C; 6-term Biot
1st	Frequency	4.7443 Hz	4.5834 Hz
	Loss factor	0.6248	0.7916
2nd	Frequency	13.902 Hz	13.9489 Hz
	Loss factor	0.6008	0.6824
3rd	Frequency	27.661 Hz	27.7721 Hz
	Loss factor	0.5317	0.5632
4th	Frequency	46.1548 Hz	47.1053 Hz
	Loss factor	0.4715	0.4681
5th	Frequency	69.3118 Hz	68.82259 Hz
	Loss factor	0.421	0.4226