Structural Modal Analysis and Optimization of SUV Door Based on Response Surface Method

Table 4

FCCD of the fifth-order modal frequencies to design variables.

No.	Thickness of vehicle door panel				Response y (Hz)		(%)
	(mm)	(mm)	(mm)	(mm)	FEM	RSM
1	0.5	1.2	0.5	0.6	49.54	49.68	0.28
2	0.5	1.2	0.5	1.0	50.73	50.62	−0.21
3	0.5	1.2	0.8	0.6	49.46	49.59	0.26
4	0.5	1.2	0.8	1.0	50.68	50.59	−0.19
5	0.5	1.6	0.5	0.6	50.86	50.79	−0.13
6	0.5	1.6	0.5	1.0	51.86	51.87	0.03
7	0.5	1.6	0.8	0.6	50.78	50.70	−0.16
8	0.5	1.6	0.8	1.0	51.81	51.83	0.05
9	0.9	1.2	0.5	0.6	56.33	56.35	0.03
10	0.9	1.2	0.5	1.0	56.65	56.73	0.14
11	0.9	1.2	0.8	0.6	56.24	56.19	−0.09
12	0.9	1.2	0.8	1.0	56.55	56.62	0.13
13	0.9	1.6	0.5	0.6	58.69	58.80	0.19
14	0.9	1.6	0.5	1.0	59.48	59.32	−0.27
15	0.9	1.6	0.8	0.6	58.55	58.64	0.16
16	0.9	1.6	0.8	1.0	59.31	59.21	−0.17
17	0.7	1.4	0.6	0.8	55.34	55.37	0.06
18	0.5	1.4	0.6	0.8	50.91	50.95	0.08
19	0.9	1.4	0.6	0.8	58.04	57.99	−0.09
20	0.7	1.2	0.6	0.8	54.49	54.31	−0.33
21	0.7	1.6	0.6	0.8	55.99	56.16	0.30
22	0.7	1.4	0.5	0.8	55.38	55.36	−0.04
23	0.7	1.4	0.8	0.8	55.25	55.26	0.02
24	0.7	1.4	0.6	0.6	55.24	54.95	−0.52
25	0.7	1.4	0.6	1.0	55.43	55.70	0.49