Publication Date:
2019-06-27
Description:
A micromechanics analysis for the formation and propagation of slip bands on the free surface of a polycrystal under monotonic loading is presented. For the growth of slip bands, the analysis satisfies the conditions of both equilibrium and displacement continuity, as well as the relation between slip and the resolved shear stress throughout the polycrystal. Numerical calculations show how the microstress field causes the concentration of plastic deformation in discrete sliding bands and give results which are in good qualitative agreement with known slip band observations on aluminum single crystals.
Keywords:
SOLID-STATE PHYSICS
Type:
NASA. Langley Res. Center Adv. in Eng. Sci., Vol. 1; p 67-75
Format:
text
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