Coupled optimization of macroscopic structures and lattice infill
Article dans une revue avec comité de lecture
Author
DOI
10.1002/nme.6392Date
2020-05-16Journal
international Journal for Numerical Methods in Engineering,Abstract
This article is concerned with the coupled optimization of the external boundary of a structure and its infill made of some graded lattice material. The lattice material is made of a periodic cell, macroscopically modulated and oriented. The external boundary may be coated by a layer of pure material with a fixed prescribed thickness. The infill is optimized by the homogenization method while the macroscopic shape is geometrically optimized by the Hadamard method of shape sensitivity. A first original feature of the proposed approach is that the infill material follows the displacement on the exterior boundary during the geometric optimization step. A second key feature is the dehomogenization or projection step which build a smoothly varying lattice infill from the optimal homogenized properties. Several numerical examples illustrate the effectiveness of our approach in 2-d, which is especially convenient when considering design-dependent loads.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lecturePRUM, Grégoire; BOURGAIN, Maxime; SAURET, Christophe; ROUILLON, Olivier; ROUCH, Philippe; THOREUX, Patricia (Taylor & Francis, 2017)No abstract available
-
Communication avec acteBOURGAIN, Maxime; SAURET, Christophe; PRUM, Grégoire; VALDES-TAMAYO, Laura; ROUILLON, Olivier; THOREUX, Patricia; ROUCH, Philippe (MPDI, 2020)The swing is a key movement for golf. Its in-field performance could be estimated by embedded technologies, but often only vertical ground reaction forces (VGRF) are estimated. However, as the swing plane is inclined, ...
-
Article dans une revue avec comité de lecturePONT, Grégoire; PONT, Grégoire; BRENNER, Pierre; BRENNER, Pierre; CINNELLA, Paola; CINNELLA, Paola; MAUGARS, Bruno; MAUGARS, Bruno; ROBINET, Jean-Christophe; ROBINET, Jean-Christophe (Elsevier, 2017)A Godunov's type unstructured finite volume method suitable for highly compressible turbulent scale-resolving simulations around complex geometries is constructed by using a successive correction technique. First, a family ...
-
Chapitre d'ouvrage scientifiquePONT, Grégoire; CINNELLA, Paola; ROBINET, Jean-Christophe; BRENNER, Pierre (Springer International Publishing, 2015)An automatic HRL (Hybrid RANS/LES) strategy is investigated in FLUSEPA, a finite-volume solver developed by Airbus Defense and Space. A HRL turbulence model is coupled to a high-order hybrid numerical approximation method. ...
-
Communication avec acteMENASRIA, Amandine; BRENNER, Pierre; CINNELLA, Paola; PONT, Grégoire (American Institute of Aeronautics and Astronautics, 2018)Improved wall boundary treatments are investigated for a family of high-order Godunovtype finite volume schemes based on k-exact polynomial reconstructions in each cell of the primitive variables, via a successive corrections ...