Analytical Expressions for Frequency and Buckling of Large Amplitude Vibration of Multilayered Composite Beams

Table 2

Comparison of the frequency ratio of the isotropic single-layer beam with clamped end conditions for different amplitude ratio.

Wmax	𝜂=25		𝜂=50		𝜂=100		𝜂=500
	Ref. [17]	Present	Ref. [17]	Present	Ref. [17]	Present	Ref. [17]	Present
1	1.0276	1.0299	1.0242	1.0260	1.0234	1.0240	1.0231	1.0233
2	1.1058	1.1068	1.0933	1.0987	1.0902	1.0910	1.0892	1.0899
3	1.2239	1.2302	1.1987	1.2131	1.1924	1.1950	1.1903	1.928
4	1.3711	1.3856	1.3313	1.3421	1.3212	1.3288	1.3179	1.3235