Optimization of Natural Frequencies and Sound Power of Beams Using Functionally Graded Material

Table 4

The optimum design parameters of a baffled clamped FGM beam which minimize the sound radiation at 145 Hz.

	𝐿𝑊 (dB)	𝐶	𝛼	𝛾	𝛽	𝜂	𝜙
Steel	79.2	—	—	—	—	—	—
Aluminum	89.3	—	—	—	—	—	—
FGM-1	76.5	0.799	0.000	0.386	Any	—	—
FGM-2	68.4	0.999	1.000	0.512	—	1.989	1.761