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Some effects of material degradation on failure mechanisms of brittle damage materials are investigated. Conditions for the localization of deformation within a shear band are established for rate ...
not initiated by plastic yielding, and almost always terminated by brittle fracture. Unlike conventional brittle glasses, metallic glasses are generally capable of limited plastic yielding by shear - band sliding ...
of damaged material with the increased porosity, which is maximum along the axial zone of the band where the material is completely broken. The damage is due to both tensile and shear mechanisms. The role ...
that failure results from ductile defects initiation , growth and propagation inside narrow shear bands wherein the plastic strain is highly localised. Materials and Structures (2016) 49:1829–1840 DOI 10.1617 ...
the brittleness of the work- jective was to understand how the crack initiation and propa- piece and thus lead to the large damage in shear band . The gation, and thermo-plastic instability and pressure from force ...
zones of yielded material around the notch, followed by crack tearing from the notch surface. With increasing specimen thickness, restriction of shear banding ensued and a stable, semi-elliptical ...
Adiabatic shear bands (ASBs) are known to be the dominant damage mechanisms in structural materials under high strain rate loading such as magnesium (Mg) alloys. Therefore, to tailor the mechanical ...
In this study, the formation of localized deformation band and failure processes of brittle –ductile materials (coarse and medium marbles) containing pre-existing flaws under various loading ...
Based on discontinuous displacement approximation of the continuum and ‘ shear band ’ kinematics, two cohesive crack models are derived within the constitutive framework of coupled damage ...
of sandstone are deformed in a triaxial deformation apparatus, resulting in deformation expressed as pale interweaving bands of granulated material with finite shear offset and associated microcracking ...
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