Limitations of single scale approaches to study the complex physics involved in friction havemotivated the development of multiscalemodels.We review the state-of-the-artmultiscalemodels that have been developed up to date. These have been successfully applied to a variety of physical problems, but that were limited, in most cases, to zero Kelvin studies. We illustrate some of the technical challenges involved with simulating a frictional sliding problem, which by nature generates a large amount of heat. These challenges can be overcome by a proper usage of spatial filters, which we combine to a direct finite-temperature multiscale approach coupling molecular dynamics with finite elements. The basic building block relies on the proper definition of a scale transfer operator using the least square minimization and spatial filtering. Then, the restitution force from the generalized Langevin equation is modified to perform a two-way thermal coupling between the two models. Numerical examples are shown to illustrate the proposed coupling formulation.
CITATION STYLE
Ramisetti, S. B., Anciaux, G., & Molinari, J. F. (2015). MD/FE multiscale modeling of contact. NanoScience and Technology, 31, 289–312. https://doi.org/10.1007/978-3-319-10560-4_14
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