Experimental Determination And Computational Modelling Of The Damage Development During Ductile Fracture Of A Free-cutting Steel
Price
Free (open access)
Transaction
Volume
26
Pages
10
Published
2000
Size
897 kb
Paper DOI
10.2495/DM000121
Copyright
WIT Press
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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