Analysis of Sandwich Plates by Generalized Differential Quadrature Method

Table 1

[0^∘/90^∘/90^∘/0^∘] square laminated plate under sinusoidal load, applied at (𝑧=ℎ/2).

𝑎/ℎ	Method	𝑤	𝜎𝑥𝑥	𝜎𝑦𝑦	𝜏𝑧𝑥
4	HSDT finite strip method [41]	1.8939	0.6806	0.6463	0.2109
	HSDT [11]	1.8937	0.6651	0.6322	0.2064
	FSDT [42]	1.7100	0.4059	0.5765	0.1398
	Elasticity [43]	1.954	0.720	0.666	0.270
	Ferreira et al. [44] (𝑁=21)	1.8864	0.6659	0.6313	0.1352
	Ferreira (layer-wise) [45] (𝑁=21)	1.9075	0.6432	0.6228	0.2166
	Present (7×7 grid)	1.9087	0.6423	0.6258	0.2173
	Present (11×11 grid)	1.9091	0.6429	0.6265	0.2173
	Present (15×15 grid)	1.9091	0.6429	0.6265	0.2173
	Present (19×19 grid)	1.9091	0.6429	0.6265	0.2173
10	HSDT finite strip method [41]	0.7149	0.5589	0.3974	0.2697
	HSDT [11]	0.7147	0.5456	0.3888	0.2640
	FSDT [42]	0.6628	0.4989	0.3615	0.1667
	Elasticity [43]	0.743	0.559	0.403	0.301
	Ferreira et al. [44] (𝑁=21)	0.7153	0.5466	0.4383	0.3347
	Ferreira (layer-wise) [45] (𝑁=21)	0.7309	0.5496	0.3956	0.2888
	Present (7×7 grid)	0.7300	0.5481	0.3963	0.2993
	Present (11×11 grid)	0.7303	0.5487	0.3966	0.2993
	Present (15×15 grid)	0.7303	0.5487	0.3966	0.2993
	Present (19×19 grid)	0.7303	0.5487	0.3966	0.2993
100	HSDT finite strip method [41]	0.4343	0.5507	0.2769	0.2948
	HSDT [11]	0.4343	0.5387	0.2708	0.2897
	FSDT [42]	0.4337	0.5382	0.2705	0.1780
	Elasticity [43]	0.4347	0.539	0.271	0.339
	Ferreira et al. [44] (𝑁=21)	0.4365	0.5413	0.3359	0.4106
	Ferreira (layer-wise) [45] (𝑁=21)	0.4374	0.5420	0.2697	0.3232
	Present (7×7 grid)	0.4345	0.5385	0.2708	0.3359
	Present (11×11 grid)	0.4348	0.5391	0.2711	0.3359
	Present (15×15 grid)	0.4348	0.5391	0.2711	0.3359
	Present (19×19 grid)	0.4348	0.5391	0.2711	0.3359