Vibration Analysis of Piezoelectric Composite Plate Resting on Nonlinear Elastic Foundations Using Sinc and Discrete Singular Convolution Differential Quadrature Techniques

Table 3

Comparison between the normalized fundamental frequency using DSCDQM-DLK, bandwidth (2M + 1), and grid size N for the simply supported square isotropic plate (, , , , and ).

Fundamental frequency		DSCDQM-DLK
Bandwidth	N	3	5	7	9	11
2M + 1 = 3		55.9844	56.0849	56.0685	56.0685	56.0685
2M + 1 = 5		55.9524	56.0349	56.0320	56.0320	56.0320
2M + 1 = 7		56.1798	56.0650	56.0320	56.0320	56.0320
2M + 1 = 9		55.9384	56.2877	56.0320	56.0320	56.0320
2M + 1 = 11		55.9384	56.2877	56.0320	56.0320	56.0320