Optimization of Automotive Suspension System by Design of Experiments: A Nonderivative Method

Table 11

ANOVA analysis: fractional factorial design.

Source	DF	Seq SS	Adj SS	Adj MS
Blocks	1	1.1552	1.1552	1.1552	133.09	0
Main effects	6	2.84555	2.84555	0.47426	54.64	0
typ (psi)	1	0.00405	0.00405	0.00405	0.47	0.502
cma (degree)	1	0.3698	0.3698	0.3698	42.61	0
ks (N/m)	1	0.125	0.125	0.125	14.4	0.001
cs (N-s/m)	1	1.02245	1.02245	1.02245	117.8	0
toe (mm)	1	0.53045	0.53045	0.53045	61.11	0
	1	0.7938	0.7938	0.7938	91.46	0
Two-way interactions	2	0.84725	0.84725	0.42363	48.81	0
typ (deg)	1	0.61605	0.61605	0.61605	70.98	0
typ	1	0.2312	0.2312	0.2312	26.64	0
Residual error	22	0.19095	0.19095	0.00868
Lack of fit	6	0.07515	0.07515	0.01253	1.73	0.178
Pure error	16	0.1158	0.1158	0.00724
Total	31	5.03895