Optimization of Process Parameters of Stamping Forming of the Automotive Lower Floor Board

Table 1

Mechanical property parameters of WSS-M-1A365A12 steel sheet.

Mass density/(kg·mm^−3)	Young’s modulus/MPa	Hardening rule	Strength coefficient K/MPa	Poisson ratio	Lankford parameter
					0	45	90
7.85 × 10^−3	2.1 × 10^5	0.225	586.8	0.3	1.35	1.15	1.65