Analytical and Experimental Vibration of Sandwich Beams Having Various Boundary Conditions

Table 2

The five low natural frequencies for a simply supported sandwich beam (rad/s).

Mode	Present method (GDQ)	Exact [11]	Model (C) [12]
1	2048.46	2048.41	2048.19
2	5189.73	5189.67	5183.37
3	8250.24	8250.19	8224.06
4	11225.32	11225.27	11159.63
5	14139.22	14139.19	14009.12