Experiments were carried out with a new split Hopkins bar apparatus specially designed for the dynamic tensile test of sheet metals of deep drawing quality. The quasi-static and dynamic tensile tests provided stress-strain curves of sheet metals for various strain rates. The five constants in the Johnson-Cook relation of sheet metals such as SPCEN, SPCC and SPRC were determined by experiments and numerical simulation with ABAQUS/Explicit. The constants were used to calculate stress-strain curves of sheet metals with respect to strain rates by the Johnson-Cook relation.


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    Title :

    Identification of dynamic behavior of sheet metals for an auto-body with tension split Hopkinson bar


    Contributors:
    Kang, W.J. (author) / Cho, S.S. (author) / Huh, H. (author) / Chung, D.T. (author)


    Publication date :

    1998


    Size :

    6 Seiten



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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