Free Vibrations and Impact Resistance of a Functionally Graded Honeycomb Sandwich Plate

Table 1

Comparison of natural frequencies (Hz).

Mode		Type A		Type B
m	n	Theoretical solution	FEM result	Theoretical solution	FEM result
1	2	275.9721	276.06	226.9837	235.35
2	1	288.9092	284.24	237.2282	239.29
2	2	451.2983	446.08	355.8742	349.01