Print Email Facebook Twitter Simultaneous optimization of shape and topology of free-form shells based on uniform parameterization model Title Simultaneous optimization of shape and topology of free-form shells based on uniform parameterization model Author Xia, Y. (TU Delft Applied Mechanics; Harbin Institute of Technology) Wu, Yue (Harbin Institute of Technology) Hendriks, M.A.N. (TU Delft Applied Mechanics; Norwegian University of Science and Technology (NTNU)) Date 2019 Abstract In current optimization methods for free-form shells, the shape and topology are usually optimized separately. These methods are based on the assumption that the shape and topology of a shell influence each other only slightly, but this is not always correct. Moreover, different parameterization models are used in the shape optimization and topology optimization of free-form shells, which brings difficulties to carry out the integrated optimization. To solve this problem, an integrated method is proposed for simultaneously optimizing shape and topology for free-form shells. A uniform parameterization model based on NURBS solids is established to parameterize the free-form shells. In this model, only a small number of variables are used to describe both the shape and topology of the shell. In this way, the integrated optimization problem can be simplified, thus decrease the computational complexity. The integrated optimization of shape and topology is a complicated and large-scale optimization problem. Solving this problem requires a suitable optimization method. In this paper, the Method of Moving Asymptotes (MMA) is adopted. Finally, numerical examples are presented to address the importance of the optimization sequences and show the effectiveness and application of the proposed method. Subject Free-form shellIntegrated optimizationNURBSShape optimizationTopology optimizationUniform parameterization model To reference this document use: http://resolver.tudelft.nl/uuid:6fa5e07e-dd52-4aa2-abe0-ca9c238d5117 DOI https://doi.org/10.1016/j.autcon.2019.02.018 Embargo date 2019-09-01 ISSN 0926-5805 Source Automation in Construction, 102, 148-159 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2019 Y. Xia, Yue Wu, M.A.N. Hendriks Files PDF 1_s2.0_S092658051830582X_main.pdf 5.03 MB Close viewer /islandora/object/uuid:6fa5e07e-dd52-4aa2-abe0-ca9c238d5117/datastream/OBJ/view