Sound Radiation and Vibration of Composite Panels Excited by Turbulent Flow: Analytical Prediction and Analysis

Table 1

Physical properties of composite panels.

Variable	Description, units	Case  1	Case  2	Case  3	Case  4
𝑎	Length, m	1.83	1.1683	0.348	1.0
𝑏	Width, m	1.22	1.1683	0.3048	0.3
𝜆	Aspect ratio (𝑎/𝑏)	1.5	1.0	1.14	3.33
ℎ1,ℎ3	Face layers thickness, mm	0.406	0.506	0.762	3.5
ℎ2	Core layer thickness, mm	6.4	19.05	0.254	0.5
𝐸1, 𝐸3	Face layers Young modulus, Pa	6.898×10^10	7.1×10^10	6.898×10^10	6.6×10^10
𝐸2	Core layer Young modulus, Pa	4.57×10^5	4.57×10^5	2.67×10^6	2.6×10^8
𝜈1,𝜈3	Face layers Poisson’s ratio	0.33	0.33	0.3	0.33
𝜈2	Core layer Poisson’s ratio	0.4	0.4	0.49	0.3
𝜌1,𝜌3	Face layers density, kg m^−3	2768	2700	2740	2680
𝜌2	Core layer density, kg m^−3	122	48.06	999	1680
𝑚	Total mass, kg	6.76	4.99	0.47	5.88