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

Table 1

Material parameter.

E (MPa)		σ0 (MPa)	σb (MPa)	ρ (kg·m^−3)
71000	0.345	295	328	2710

Note: E represents the modulus of elasticity, represents the Poisson ratio, σ₀ represents the yield stress, σ_b represents the tensile strength, and ρ represents the density.