Source: https://people.epfl.ch/182721
Timestamp: 2019-04-22 10:28:21+00:00

Document:
M. Hodapp; G. Anciaux; W. Curtin : Lattice Green function methods for atomistic/continuum coupling: Theory and data-sparse implementation; Computer Methods in Applied Mechanics and Engineering. 2019. DOI : 10.1016/j.cma.2019.02.006.
M. Hodapp; G. Anciaux; J.-F. Molinari; W. Curtin : Coupled atomistic/discrete dislocation method in 3D Part II: Validation of the method; Journal of the Mechanics and Physics of Solids. 2018-10-01. DOI : 10.1016/j.jmps.2018.05.003.
L. Frérot; M. Bonnet; J.-F. Molinari; G. Anciaux : A Fourier-accelerated volume integral method for elastoplastic contact. 2018.
J. Cho; J. Molinari; W. Curtin; G. Anciaux : The coupled atomistic/discrete-dislocation method in 3d. Part III: Dynamics of hybrid dislocations; JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS. 2018. DOI : 10.1016/j.jmps.2018.05.005.
G. Anciaux; T. Junge; M. Hodapp; T. Cho; J. Molinari et al. : The Coupled Atomistic/Discrete-Dislocation method in 3d part I: Concept and algorithms; JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS. 2018. DOI : 10.1016/j.jmps.2018.05.004.
A. Vakis; V. Yastrebov; J. Scheibert; L. Nicola; D. Dini et al. : Modeling and simulation in tribology across scales: An overview; TRIBOLOGY INTERNATIONAL. 2018. DOI : 10.1016/j.triboint.2018.02.005.
V. A. Yastrebov; G. Anciaux; J.-F. Molinari : On the accurate computation of the true contact-area in mechanical contact of random rough surfaces; Tribology International. 2017. DOI : 10.1016/j.triboint.2017.04.023.
V. Rey; G. Anciaux; J.-F. Molinari : Normal adhesive contact on rough surfaces: efficient algorithm for FFT-based BEM resolution; Computational Mechanics. 2017. DOI : 10.1007/s00466-017-1392-5.
V. A. Yastrebov; G. Anciaux; J.-F. Molinari : The role of the roughness spectral breadth in elastic contact of rough surfaces; Journal of the Mechanics and Physics of Solids. 2017. DOI : 10.1016/j.jmps.2017.07.016.
J. Cho; J.-F. Molinari; G. Anciaux : Mobility law of dislocations with several character angles and temperatures in FCC Aluminum; International Journal of Plasticity. 2017. DOI : 10.1016/j.ijplas.2016.12.004.
J. Cho; T. Junge; J.-F. Molinari; G. Anciaux : Toward a 3D coupled atomistic and discrete dislocation dynamics simulation: dislocation core structures and Peierls stresses with several character angles in FCC aluminum; Advanced Modeling and Simulation in Engineering Sciences. 2015. DOI : 10.1186/s40323-015-0028-6.
T. Junge; G. Anciaux; J.-F. Molinari : Dynamic stability of displacement-based atomistic/continuum coupling methods; Journal Of The Mechanics And Physics Of Solids. 2015. DOI : 10.1016/j.jmps.2015.04.004.
V. A. Yastrebov; G. Anciaux; J.-F. Molinari : From infinitesimal to full contact between rough surfaces: Evolution of the contact area; International Journal Of Solids And Structures. 2015. DOI : 10.1016/j.ijsolstr.2014.09.019.
R. Aghababaei; G. Anciaux; J.-F. Molinari : Impact of internal crystalline boundaries on lattice thermal conductivity: Importance of boundary structure and spacing; Applied Physics Letters. 2014. DOI : 10.1063/1.4901887.
V. A. Yastrebov; G. Anciaux; J.-F. Molinari : The Contact of Elastic Regular Wavy Surfaces Revisited; Tribology Letters. 2014. DOI : 10.1007/s11249-014-0395-z.
S. B. Ramisetti; G. Anciaux; J. F. Molinari : A concurrent atomistic and continuum coupling method with applications to thermo-mechanical problems; International Journal For Numerical Methods In Engineering. 2014. DOI : 10.1002/nme.4606.
D. S. Kammer; V. Yastrebov; G. Anciaux; J.-F. Molinari : The existence of a critical length scale in regularised friction; Journal of the Mechanics and Physics of Solids. 2014. DOI : 10.1016/j.jmps.2013.10.007.
G. Anciaux; J.-F. Molinari : A molecular dynamics and finite element study of the nanoscale thermal contact conductance; International Journal of Heat and Mass Transfer. 2013. DOI : 10.1016/j.ijheatmasstransfer.2012.12.003.
P. Spijker; G. Anciaux; J.-F. Molinari : Relations between roughness, temperature and dry sliding friction at the atomic scale; Tribology International. 2013. DOI : 10.1016/j.triboint.2012.02.009.
P. Romero; G. Anciaux; A. Molinari; J.-F. Molinari : Insights into the thermo-mechanics of orthogonal nanometric machining; Computational Materials Science. 2013. DOI : 10.1016/j.commatsci.2013.01.036.
S. B. Ramisetti; G. Anciaux; J.-F. Molinari : Spatial filters for bridging molecular dynamics with finite elements at finite temperatures; Computer Methods in Applied Mechanics and Engineering. 2013. DOI : 10.1016/j.cma.2012.09.008.
G. Anciaux; S. B. Ramisetti; J.-F. Molinari : A finite temperature bridging domain method for MD-FE coupling and application to a contact problem; Computer Methods in Applied Mechanics and Engineering. 2012. DOI : 10.1016/j.cma.2011.01.012.
V. A. Yastrebov; G. Anciaux; J.-F. Molinari : Contact between representative rough surfaces; Physical Review E. 2012. DOI : 10.1103/PhysRevE.86.035601.
P. A. Romero; G. Anciaux; A. Molinari; J. F. Molinari : Friction at the tool-chip interface during orthogonal nanometric machining; Modelling And Simulation In Materials Science And Engineering. 2012. DOI : 10.1088/0965-0393/20/5/055007.
P. Spijker; G. Anciaux; J.-F. Molinari : The effect of loading on surface roughness at the atomistic level; Computational Mechanics. 2012. DOI : 10.1007/s00466-011-0574-9.
P. Spijker; G. Anciaux; J.-F. Molinari : Dry sliding contact between rough surfaces at the atomistic scale; Tribology Letters. 2011. DOI : 10.1007/s11249-011-9846-y.
S. B. Ramisetti; C. Campañá; G. Anciaux; J.-F. Molinari; M. H. Müser et al. : The autocorrelation function for island areas on self-affine surfaces; Journal of Physics: Condensed Matter. 2011. DOI : 10.1088/0953-8984/23/21/215004.
G. Anciaux; J.-F. Molinari : Sliding of rough surfaces and energy dissipation with a 3D multiscale approach; International Journal For Numerical Methods In Engineering. 2010. DOI : 10.1002/nme.2845.
G. Anciaux; J.-F. Molinari : Contact mechanics at the nanoscale, a 3D multiscale approach; International Journal For Numerical Methods In Engineering. 2009. DOI : 10.1002/nme.2590.
First, the main goal of my current research is the physical description of contact interactions. I performed numerous studies of this topic using different models from the continuum scale down to atomistic scale. Since atomic phenomena and macroscopic observations are linked, the physics of contact needs the simultaneous consideration of several scales. For instance, plasticity is a theory defined for the macroscopic scale whereas the origins should be studied at the nanoscale.
Because of the limitations of purely theoretical approaches, I employ numerical modeling to obtain results when a closed form solution is unreachable. At the macroscopic scale, I use Finite Element Method (FEM) and Boundary Element Method (BEM). Molecular Dynamics (MD) is employed at the atomic scale while for an intermediate description of crystalline plasticity Discrete Dislocation Dynamics (DDD) is an efficient model. Various coupling strategies I participate in are at the intersection of these three modeling techniques.
Finally, my computer science experience in numerical modeling and in programming allows a fast and efficient implementation of modeling ideas developed in LSMS. Also, I am the main developer of the LibMultiScale project which is a coupling framework having the possibility to allow parallel communications of MD, DDD and FEM so as to achieve concurrent coupling of scales. I am sharing the responsibility of the development of the Akantu finite element library which is a new project hosted by the LSMS. I believe that the scientific community can benefit of these two advanced 3D parallel codes dedicated to solid mechanics. My work contributes to open-source codes, so that the concepts and methods can be used, implemented and applied by researchers within LSMS, ENAC, EPFL and world-wide.

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