Robust Die Compensation in Sheet Metal Design through the Integration of Dual Response Surface and Shape Function Optimization

Table 6

Regression coefficients of the response surface related to Q.

Main effects of control variables		Effects of noise variables		Interactions control-noise Variables
γ0	0.530	δ1	0.043	Λ11	0.093
γ1	0.151	δ2	-0.002	Λ12	0.004
γ2	0.099			Λ13	0.001
γ3	0.126			Λ21	-0.007
γ4	0.015			Λ22	-0.008
γ5	0.226			Λ23	0.003
γ6	-0.036
γ7	0.013
γ8	0.140
γ9	-0.343