Crashworthiness Design and Multiobjective Optimization for Hexagon Honeycomb Structure with Functionally Graded Thickness

Table 3

Optimal thickness value summary by different surrogate models.

Case-SEA (kJ/kg)	Surrogate model	Tmax	Tmin	n	T1	T2	T3	T4	T5
A-18.5	RBF	1.013	0.200	4.879	1.013	0.400	0.228	0.201	0.200
	RSM	1.097	0.230	6.883	1.097	0.350	0.238	0.231	0.230
	KRG	1.179	0.268	6.088	1.179	0.426	0.281	0.268	0.268
B-20	RBF	1.188	0.273	7.050	1.188	0.527	0.315	0.275	0.273
	RSM	1.098	0.235	3.570	1.098	0.544	0.308	0.241	0.235
	KRG	1.219	0.284	4.294	1.219	0.556	0.331	0.286	0.284
C-22	RBF	1.380	0.307	4.454	1.380	0.810	0.480	0.334	0.307
	RSM	1.498	0.267	2.966	1.498	0.791	0.425	0.287	0.267
	KRG	1.282	0.349	2.846	1.282	0.760	0.478	0.367	0.349
D-24	RBF	1.485	0.364	0.461	1.485	1.346	1.178	0.956	0.364
	RSM	1.499	0.676	1.786	1.499	1.168	0.915	0.745	0.676
	KRG	1.481	0.655	4.911	1.481	0.856	0.683	0.656	0.655