Multiscale simulations of mixed-mode fracture in bcc-Fe
作者： Inga Ringdalen Vatne , Erling Østby , Christian Thaulow
DOI: 10.1088/0965-0393/19/8/085006
关键词: Atom 、 Materials science 、 Boundary layer 、 Crack closure 、 Crystallography 、 Crystal twinning 、 Fracture (geology) 、 Composite material 、 Fracture mechanics 、 Crack tip opening displacement 、 Edge (geometry)
摘要: Mixed-mode fracture of bcc-Fe has been investigated using the quasicontinuum method with an embedded atom potential. A modified boundary layer approach employed to simulate a semi-infinite crack and investigate influence degree mode II III loading on tip mechanisms. The analyses have carried out four crystallographic orientations different degrees mixed-mode loading. results show that critical stress intensity factor mechanisms at are sensitive both orientation Phenomena such as propagation, twinning emission edge screw dislocations observed.
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