Analysis of Functionally Graded Material Plates Using Triangular Elements with Cell-Based Smoothed Discrete Shear Gap Method

Table 7

Comparison of critical buckling load 𝜆_cru=𝑁^𝑜_𝑥𝑥cr𝑏²/𝜋²𝐷_𝑚 for a simply supported FGM plate with 𝑎/ℎ= 100 and 𝑟/𝑎= 0.2. The effective material properties are computed by rule of mixtures. In order to be consistent with the literature, the properties of the metallic phase are used for normalization.

Gradient index, 𝑛	[51]	Present	% difference
0	5.2611	5.2831	−0.42
0.2	4.6564	4.6919	−0.76
1	3.6761	3.663	0.36
2	3.3672	3.3961	−0.86
5	3.1238	3.1073	0.53
10	2.9366	2.8947	1.43