A psychoacoustic assessment for enhancing the sound quality of vibrating composite panels

Open Access

Table 3.

The properties of the sandwich panels, designed based on the reference values given in Table 2. Also, E_equi, M, D_t/M denote, respectively, the equivalent Young modulus, total surface mass density, and stiffness-to-mass ratio.

	Geometrical parameters		Mechanical parameters			Equivalent parameters

	h_f [mm]	h_c [mm]	E_f [GPa]	G [MPa]	η	D_t [Nm]	E_equi [GPa]	M [kg/m² y]	D_t/M [Nm³/kg]
Design 1	0.2	13.5	30	71.17	0.0916	619	2.52	1.91	324
Design 2	0.2	13.5	70	71.17	0.0916	1444	5.87	1.91	756
Design 3	0.2	13.5	50.12	20	0.0916	1044	4.25	1.04	1003
Design 4	0.2	13.5	50.12	80	0.0916	1076	4.38	2.14	504
Design 5	0.2	13.5	50.12	71.17	0.02	1034	4.20	1.91	542
Design 6	0.2	13.5	50.12	71.17	0.06	1034	4.20	1.91	542
Design 7	1.1	13.5	50.12	71.17	0.0916	6469	18.25	4.95	1307
Design 8	2	13.5	50.12	71.17	0.0916	13 305	27.11	7.99	1665
Design 9	0.2	6	50.12	71.17	0.0916	212	8.82	1.22	173
Design 10	0.2	18	50.12	71.17	0.0916	1825	3.20	2.32	787

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