Study on Limit Formability of 1000 MPa Dual Phase Steel

Study on Limit Formability of 1000 MPa Dual Phase Steel

Through the cup drawing test, the onset crack and limiting drawing ratio (LDR) of 1000 MPa dual phase (DP) steel were identified. Three yielding models: Hill, Barlat and BBC were compared in the numerical simulation. The results show that LDR of 1000 MPa DP steel is 2.07. And Barlat yield criterion...

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Veröffentlicht in:Shànghăi jiāotōng dàxué xuébào 2011-11, Vol.45 (11), p.1653-1656
Hauptverfasser: Shi, Gang, Wang, Wu-Rong, Yang, Jun, Hu, Wei, Dan, Wen-Jiao
Format: Artikel
Sprache:chi
Schlagworte:
BBC
Constraining
Criteria
Dual phase steels
Fracture mechanics
Mathematical models
Steels
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Zusammenfassung:Through the cup drawing test, the onset crack and limiting drawing ratio (LDR) of 1000 MPa dual phase (DP) steel were identified. Three yielding models: Hill, Barlat and BBC were compared in the numerical simulation. The results show that LDR of 1000 MPa DP steel is 2.07. And Barlat yield criterion is suitable for actual test. Unlike traditional sheet materials whose crack has obvious necking, the crack mode of 1000 MPa DP is a tensile shear fracture and cracks are on alternating 45 degree planes, through thickness.
ISSN:1006-2467