Reference : Quasicontinuum-based multiscale approaches for plate-like beam lattices experiencing ...
Scientific journals : Article
Engineering, computing & technology : Materials science & engineering
Computational Sciences
http://hdl.handle.net/10993/17424
Quasicontinuum-based multiscale approaches for plate-like beam lattices experiencing in-plane and out-of-plane deformation
English
Beex, Lars mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Kerfriden, Pierre [Cardiff University > School of Engineering > > Senior Lecturer]
Rabczuk, Timon [Bauhaus University > Civil Engineering > > Prof]
Bordas, Stéphane mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
2014
Computer Methods in Applied Mechanics & Engineering
Elsevier Science
279
348-378
Yes (verified by ORBilu)
International
0045-7825
Lausanne
Switzerland
[en] Quasicontinuum method ; Multiscale ; Beam lattice ; Lattice model ; Discrete model ; Network model
[en] The quasicontinuum (QC) method is a multiscale approach that aims to reduce the computational cost of discrete lattice computations. The method incorporates small-scale local lattice phenomena (e.g. a single lattice defect) in macroscale simulations. Since the method works directly and only on the beam lattice, QC frameworks do not require the construction and calibration of an accompanying continuum model (e.g. a cosserat/micropolar description). Furthermore, no coupling procedures are required between the regions of interest in which the beam lattice is fully resolved and coarse domains in which the lattice is effectively homogenized. Hence, the method is relatively straightforward to implement and calibrate. In this contribution, four variants of the QC method are investigated for their use for planar beam lattices which can also experience out-of-plane deformation. The different frameworks are compared to the direct lattice computations for three truly multiscale test cases in which a single lattice defect is present in an otherwise perfectly regular beam lattice.
Researchers
http://hdl.handle.net/10993/17424
10.1016/j.cma.2014.06.018
http://dx.doi.org/10.1016/j.cma.2014.06.018

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