Characterisation of the quasi-static flow and fracture behaviour of dual-phase steel sheets in a wide range of plane stress states

• Autorzy: Behrens B. A. , Bouguecha A. , Vucetic M. , Peshekhodov I.
• Języki publikacji: EN

Abstrakty

EN

An approach to characterise the flow and fracture behaviour with the help of a modified Miyauchi shear test, a uniaxial tensile test on standard, holed, waisted specimens as well as a hydraulic bulge test is presented. The modification of the Miyauchi specimen is related to the geometry of the shear zones. The new geometry helps suppress plastic strain concentration at the edges and increase deformation in the material interior, which allows for accurate fracture characterisation. With the help of the experimental and numerical tests analyses, the flow behaviour and equivalent plastic strain at fracture were estimated for two common cold-rolled dual-phase steels in a wide range of plane stress states. With the obtained data, the applicability of the phenomenological Johnson–Cook fracture model to describe the fracture behaviour of this material type is questioned and a need for a more extensive fracture behaviour characterisation and advanced modelling is shown.

Słowa kluczowe

EN

sheet metal; dual-phase steel; shear test; fracture; FEA

PL

blachy; stal dwufazowa; złamanie; analiza metodą elementów skończonych

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2012
• Tom: Vol. 12, no. 4
• Strony: 397--406
• Opis fizyczny: Bibliogr. 26 poz., rys., tab., wykr.

Twórcy

autor

Behrens B. A.

• Leibniz Universitat Hannover, Institute of Forming Technology and Machines, Ander Universitat 2, 30823 Garbsen, Germany

autor

Bouguecha A.

• Leibniz Universitat Hannover, Institute of Forming Technology and Machines, Ander Universitat 2, 30823 Garbsen, Germany

autor

Vucetic M.

• Leibniz Universitat Hannover, Institute of Forming Technology and Machines, Ander Universitat 2, 30823 Garbsen, Germany

autor

Peshekhodov I.

• Leibniz Universitat Hannover, Institute of Forming Technology and Machines, Ander Universitat 2, 30823 Garbsen, Germany

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