Vibroacoustical Analysis of Multiple-Layered Structures with Viscoelastic Damping Cores

Table 1

The Biot constants of 3M ISD-110/112 45°C.

	ISD110	ISD112
𝐺^∞	55000 (Pa)	172000 (Pa)
a1	1.809517	5.699386303
a2	14.53095	0.596843249
a3	3.221535	1.000560485
a4	52.01026	0.577694736
a5	19768.22
a6	6.561162
b1	5.410993	4268.18097
b2	1093.778	70.26089968
b3	60.36544	501.5607814
b4	4319.613	1.969150769
b5	2840958
b6	298.0672