Print Email Facebook Twitter Homogenization-based stiffness optimization and projection of 2D coated structures with orthotropic infill Title Homogenization-based stiffness optimization and projection of 2D coated structures with orthotropic infill Author Groen, J.P. (Technical University of Denmark) Wu, J. (TU Delft Materials and Manufacturing) Sigmund, Ole (Technical University of Denmark) Date 2019 Abstract This paper concerns compliance minimization and projection of coated structures with orthotropic infill material in 2D. The purpose of the work is two-fold. First, we introduce an efficient homogenization-based approach to perform topology optimization of coated structures with orthotropic infill material. The design space is relaxed to allow for a composite material description, which means that designs with complex microstructures can be obtained on relatively coarse meshes. Second, a method is presented to project the homogenization-based designs on a fine but realizable scale. A novel method to adaptively refine the lattice structure is presented to allow for a regular spacing of the infill. Numerical experiments show excellent behavior of the projected designs, with structural performance almost identical to the homogenization-based designs. Furthermore, a reduction in computational cost of at least an order of magnitude is achieved, compared to a related approach in which the infill is optimized using a density-based approach. Subject Coated structuresHigh-resolutionHomogenizationInfillTopology optimization To reference this document use: http://resolver.tudelft.nl/uuid:c5ff51fe-cfe1-4d24-b140-7e136406f51a DOI https://doi.org/10.1016/j.cma.2019.02.031 Embargo date 2021-03-15 ISSN 0045-7825 Source Computer Methods in Applied Mechanics and Engineering, 349, 722-742 Bibliographical note Accepted author manuscript Part of collection Institutional Repository Document type journal article Rights © 2019 J.P. Groen, J. Wu, Ole Sigmund Files PDF HbasedCoating.pdf 1.69 MB Close viewer /islandora/object/uuid:c5ff51fe-cfe1-4d24-b140-7e136406f51a/datastream/OBJ/view