WIT Press


Experimental Determination And Computational Modelling Of The Damage Development During Ductile Fracture Of A Free-cutting Steel

Price

Free (open access)

Paper DOI

10.2495/DM000121

Volume

26

Pages

10

Published

2000

Size

897 kb

Author(s)

R. Schiffmann, J. Heyer, W. Dahl & W. Bleck

Abstract

Ductile fracture of metallic materials is caused by micromechanical damage developing during plastic deformation and finally leading to the initiation and propagation of a crack. Usually the typical damage mechanism is micro-void growth. To characterise this process the micromechanisms of damage have to be taken into regard ("continuum damage mechanics", "local approach"). Local stress and strain properties are calculated by FEM-models to be used for the computational determination of the damage indicators. These damage properties should be able to characterise fracture or crack initiation behaviour independent of stress state (stress triaxiality) or loading history (change of stress triaxiality). Experiments on diff

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