We investigate the deformation field induced by a cylindrical indentation on a
face-centered cubic single crystal of aluminum or copper. We first present
experimental measurements of the load–displacement curve and the crystal lattice
rotation field (under plane strain condition) of an aluminum single crystal subject to
indentation, together with related results for a copper crystal. Next, finite element
simulations of the lattice rotation and displacement field associated with the
cylindrical indentation are provided. The numerical and experimental results about
lattice rotation features are compared with theoretical predictions based on the single
crystal plasticity. Finally, the displacement fields obtained from the numerical
solutions and experiments are compared. Both electron backscatter diffraction
experiments using scanning electron microscopy and finite element simulations show
the existence of different slip sector boundaries in the single crystals, in
agreement with theoretical predictions of active slip systems and dislocation
structures.
Department of Mechanical
Engineering
Albert Nerken School of Engineering
The Cooper Union for the Advancement of Science and Art
51 Astor Place
New York, NY 10003
United States
Columbia Nanomechanics Research
Center
Department of Civil Engineering and Mechanics
622 Mudd Building
Columbia University
New York, NY 10027
United States
Columbia Nanomechanics Research
Center
Department of Civil Engineering and Mechanics
622 Mudd Building
Columbia University
New York, NY 10027
United States
Department of Civil Engineering and
Engineering Mechanics
Fu Foundation School of Engineering and Applied Science
Columbia University
500 West 120th Street
New York, NY 10027
United States