Vibroacoustical Analysis of Multiple-Layered Structures with Viscoelastic Damping Cores

Table 2

Design parameters of seven-layer structure.

Length: 1 m	Thickness: 0.1 m	Number of element: 12	Number of nodes: 13
Number of layer	Height of layer	Elastic/viscoelastic properties	Material density
1st	ℎ1=1 mm	𝐸1=210 GPa	𝜌1=7800 kg/m^3
2nd	ℎ2=0.8 mm	𝐺2: Biot	𝜌2=970 kg/m^3
3rd	ℎ3=1 mm	𝐸3=210 GPa	𝜌3=7800 kg/m^3
4th	ℎ4=0.8 mm	𝐺4: Biot	𝜌4=970 kg/m^3
5th	ℎ5=1 mm	𝐸5=210 GPa	𝜌5=7800 kg/m^3
6th	ℎ6=0.8 mm	𝐺6: Biot	𝜌6=970 kg/m^3
7th	ℎ7=1 mm	𝐸7=210 GPa	𝜌7=7800 kg/m^3