Buscar
Mostrando ítems 1-10 de 59
Transient computations using the natural stress formulation for solving sharp corner flows
(Elsevier B.V., 2017-11-01)
In this short communication, we analyse the potential of the natural stress formulation (NSF) (i.e. aligning the stress basis along streamlines) for computing planar flows of an Oldroyd-B fluid around sharp corners. This ...
Application of the natural stress formulation for solving unsteady viscoelastic contraction flows
(Elsevier B.V., 2019-07-01)
We present a numerical scheme for a previously unexploited formulation of the equations for unsteady viscoelastic flow. The formulation aligns the polymer stress along particle paths/streamlines, utilising the characteristic ...
Effect of Tip Roundness on the Nanoindentation of Fe Crystals
(Springer New York, 2020-04)
Indentation tips are never atomically sharp, but rounded at their end. We use atomistic simulation to study the effect of tip roundness for the particular case of a cube-corner pyramidal indenter by comparing the results ...
Bending of stainless steel thin sheets by a raster scanned low power CO2 laser
(ELSEVIER SCIENCE SA, 2009)
Laser forming of thin metal sheet plates using a low output power CO2 laser has been successfully performed using a mirror based scanning system. Graphite coated AISI 302 stainless steel plates, 0.3 mm thick, have been ...
Effect of Tip Roundness on the Nanoindentation of Fe Crystals
(Springer/Plenum Publishers, 2020-04)
Indentation tips are never atomically sharp, but rounded at their end. We use atomistic simulation to study the effect of tip roundness for the particular case of a cube-corner pyramidal indenter by comparing the results ...
Estudo de efeitos de canto em transistores de porta tripla
(Centro Universitário da FEI, São Bernardo do Campo, 2009)
Neste trabalho são desenvolvidos estudos de efeito de canto em transistores tridimensionais do tipo SOI MOSFET com a segunda interface em depleção ou neutra, através de simulação numérica tridimensional. Foram simulados ...
Estudo de efeitos de canto em transistores de porta tripla
(Centro Universitário da FEI, São Bernardo do Campo, 2019)
Fourth-order method for solving the Navier-Stokes equations in a constricting channel
(1997-11-30)
A fourth-order numerical method for solving the Navier-Stokes equations in streamfunction/vorticity formulation on a two-dimensional non-uniform orthogonal grid has been tested on the fluid flow in a constricted symmetric ...
Automatic construction of nurbs surfaces from unorganized points
(Universidad Nacional de Colombia Sede Medellín, 2011)
Modeling with Non Uniform Rational B-Splines (NURBS) surfaces has become a standard in CAD/CAM systems due to its stability, flexibility, and local modification properties. The advantage of fitting with NURBS surfaces is ...
Generalizing the entanglement entropy of singular regions in conformal field theories
(Springer, 2019-08)
We study the structure of divergences and universal terms of the entanglement and Rényi entropies for singular regions. First, we show that for (3 + 1)-dimensional free conformal field theories (CFTs), entangling regions ...