Research on the Cross Section Forming Quality of Three-Dimensional Multipoint Stretch Forming Parts

Table 4

Optimal parameter combination of factors A and B in each process.

Index	A	B	Combination
δh	k2 < k1 < k4 < k3	k1 < k4 < k2 < k3	A2B1
δv	k2 < k4 < k1 < k3	k1 < k2 < k3 < k4	A2B1
δp	k2 < k4 < k1 < k3	k1 < k4 < k2 < k3	A2B1
ηh	k3 < k2 < k4 < k1	k2 < k1 < k3 < k4	A3B2
ηv	k3 < k2 = k4 < k1	k2 < k3 < k4 < k1	A3B2
ηp	k3 < k2 < k4 < k1	k2 < k1 < k3 < k4	A3B2