Reference : Coarsen Graining: A Renewal Concept of Efficient Adaptivity Techniques for Multiscale... |
Scientific journals : Article | |||
Engineering, computing & technology : Mechanical engineering | |||
Computational Sciences | |||
http://hdl.handle.net/10993/13939 | |||
Coarsen Graining: A Renewal Concept of Efficient Adaptivity Techniques for Multiscale Models | |
English | |
Shih-Wei, Yang ![]() | |
Pattabhi Ramaiah, Budarapu ![]() | |
Roy Mahapatra, Debiprasad [Indian Institute of Science, Bangalore > Department of Aerospace Engineering] | |
Bordas, Stéphane ![]() | |
Pierre, Kerfriden [Cardiff University > Institute of Mechanics and Advanced Materials] | |
Timon, Rabczuk ![]() | |
Undated | |
Computer Methods in Applied Mechanics & Engineering | |
Yes | |
International | |
[en] DRKP ; Meshless methods ; multiscale | |
[en] This paper presents a multiscale method for the quasi-static crack propagation. The coarse
region is modeled by the di erential reproducing kernel particle(DRKP) method. The coupling between the coarse scale and ne scale is realized through ghost atoms. The ghost atoms positions are interpolated from the coarse scale solution and enforced as boundary conditions on the ne scale. The ne scale region is adaptively enlarged as the crack propagates and the region behind the crack tip is adaptively coarsened. The centro symmetry parameter(CSP) is used to detect the crack tip location. The triangular lattice corresponds to the lattice structure of the (111) plane of an FCC crystal in the ne scale region. The Lennard-Jones potential is used to model the atom-atom interactions. The method is implemented in two dimensions. The results are compared to pure atomistic simulations and show excellent agreement. | |
Researchers ; Professionals ; Students | |
http://hdl.handle.net/10993/13939 |
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