Artículo
Indentation and scratching of iron by a rotating tool – a molecular dynamics study
Fecha de publicación:
06/2021
Editorial:
Elsevier
Revista:
Computational Materials Science
ISSN:
0927-0256
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
When abrasive particles interact with a surface, besides translational center-of-mass motion also rotational motion of the abrasive may be involved. We perform molecular dynamics simulations of the influence of the rotational motion in a model scenario, where both translational and rotational velocities are controlled. We find that for angular velocities corresponding to slip-free rolling, the influence of rotation is small and shows up as a decrease of hardness and of friction. The effect is somewhat more pronounced for rolling motion (rotation axis parallel to surface) than for drilling motion (rotation axis perpendicular to surface). Pile-up structures are unaffected. Only if rotational speeds strongly exceed the rolling-without-slip limit, strong effects of the rotational speed are observed: the machined material amorphizes rather than to develop dislocation plasticity, the groove develops oscillatory patterns, and the material hardness is strongly reduced.
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Identificadores
Colecciones
Articulos(ICB)
Articulos de INSTITUTO INTERDISCIPLINARIO DE CIENCIAS BASICAS
Articulos de INSTITUTO INTERDISCIPLINARIO DE CIENCIAS BASICAS
Citación
Alabd Alhafez, Iyad; Ruestes, Carlos Javier; Bringa, Eduardo Marcial; Urbassek, Herbert M.; Indentation and scratching of iron by a rotating tool – a molecular dynamics study; Elsevier; Computational Materials Science; 194; 6-2021; 1-10
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