热冲压成形钢的强度与塑性及断裂应变
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Strength, Ductility and Fracture Strain ofPress-Hardening Steels
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图2. VDA 238-100弯曲示意图与弯曲过程中的厚度方向应变的分布 |
Fig.2. Schematics of VDA 238-100 bending process (a) and strain state during bending (b) (α, t,ε represent bending angle, sheet thickness and principal strain in the circumferential direction, respectively) |
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