@article{MAKHILLAJ20116120421,
    title = {A New Simulation Method for Characterization of Mechanical Properties of Nanomaterials},
    journal = {Agricultural Journal},
    volume = {6},
    number = {1},
    pages = {7-9},
    year = {2011},
    issn = {1816-9155},
    doi = {aj.2011.7.9},
    url = {https://makhillpublications.co/view-article.php?issn=1816-9155&doi=aj.2011.7.9},
    author = {H. and},
    keywords = {Simulation methods,mechanical properties,atomic scale,grain boundries,Iran},
    abstract = {A new simulation method has been developed and used to model mechanical properties of materials at many different length scales, from the nanoscale where an atomic description is appropriate, through a mesoscale where dislocation based descriptions may be useful to macroscopic length scales. In some materials, such as nanocrystalline metals, the range of length scales is compressed and a polycrystalline material may be simulated at the atomic scale. It is observed how the grain boundaries contribute actively to the deformation. At grain sizes below 5-10 nm deformation in the grain boundaries dominate over the traditional dislocation-based deformation mechanisms. This results in a reversal of the normal grain size dependence of the yield stress. It is shown that the material becomes softer when the grain size is reduced.}
    }