Schneider, KonradKonradSchneiderAmbrozkiewicz, OlafOlafAmbrozkiewiczKriegesmann, BenediktBenediktKriegesmann2025-11-252025-11-252025-11-03Composite Structures 376: 119796 (2026)https://hdl.handle.net/11420/58996This paper presents an approach for the simultaneous topology optimization of an isotropic (e.g. metallic) component, the layup optimization of a composite part and the search for the optimized position of joints between the parts. Within a gradient-based optimization, a failure criterion for the composite acts as a constraint. The constraint's gradients with respect to fiber orientations, pseudo densities of the isotropic elements, and joint positions are presented. As a demonstrative example, the load introduction into an isotropic component attached to a composite plate is analyzed. The results reveal a significant influence of the considered constraint on the optimized overall design.en0263-82232025Elsevierhttps://creativecommons.org/licenses/by/4.0/Assembly optimizationJoint optimizationStrength constraintsTopology optimizationTechnology::620: Engineering::620.1: Engineering Mechanics and Materials ScienceJournal Articlehttps://doi.org/10.15480/882.1621910.1016/j.compstruct.2025.11979610.15480/882.16219Journal Article