An Experimental-Numerical Combined Method to Determine the True Constitutive Relation of Tensile Specimens after Necking

Table 2

Mechanical properties of SAE 1045 steel [3].

Sample	(MPa)	(kN)	(MPa)	(%)
Cylindrical	450.4	46.6	749.2	18.5
Rectangular	451.6	56.5	762.0	20.0

: yield strength, : maximum load, : maximum engineering stress, and : elongation at fracture.