Atomistic finite deformation simulations: a discussion on length scale effects in relation to mechanical stresses

Article Abstract:

Research was conducted to illustrate the usefulness of the Embedded Atom Method in the study of atomistic finite deformation simulations. Three items of interest to the field of continuum mechanics were observed, namely, a spatial size scale effect, oscillating global shear stress under simple shear conditions and a length scale bridging idea that is proposed to demonstrate the bridging of spatial length scales related to plastic energy.

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Integration of basic materials research into the design of cast components by a multi-scale methodology

Article Abstract:

Research suggests that local deformations in the design of a structural component can be studied by considering the experimental data analyzed at different levels as shown by the design of a cast automotive control arm. Data show that such knowledge will aid determining the length necessary for refining microstructures or develop new materials.

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Tetragonal phase transformation in gold nanowires

Article Abstract:

The tetragonal phase transformation in gold nanowires is examined with the help of first principle tight binding and semi-empirical embedded atom calculations. Results indicate the capabilities of surface stresses in inducing phase transformation and subsequent phase stability in nanometer scale metallic wires under appropriate conditions.

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