A Finite Element Formulation and Nonlocal Theory for the Static and Free Vibration Analysis of the Sandwich Functionally Graded Nanoplates Resting on Elastic Foundation

Table 3

The convergence of fundamental frequency of the SSSS square plate .

	0		1		4		10
Mesh	Present	Q4	Present	Q4	Present	Q4	Present	Q4
	0.0764	0.1078	0.0586	0.0869	0.0506	0.0719	0.0483	0.0655
	0.0617	0.0727	0.0473	0.0572	0.0409	0.0484	0.0391	0.0451
	0.0587	0.0617	0.0449	0.0477	0.0389	0.0409	0.0372	0.0388
	0.0584	0.0603	0.0447	0.0465	0.0387	0.0400	0.0370	0.0380
	0.0580	0.0591	0.0444	0.0454	0.0384	0.0391	0.0368	0.0373
	0.0580	0.0588	0.0444	0.0451	0.0384	0.0389	0.0368	0.0372
	0.0580	0.0585	0.0444	0.0449	0.0384	0.0388	0.0368	0.0371
[51]	0.0577		0.0442		0.0381		0.0364