Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/8664
Title: Design Of A 3D Aerospace Bracket Using Lattice Structures And Topology Optımization For Additive Manufacturing
Authors: Ates G.C.
Demirtunç M.
Göçer A.C.
Doğru A.H.
Görgülüarslan, Recep Muhammet
Gökdağ İ.
Yavaş H.
Keywords: Additive manufacturing
Aerospace
Finite element analysis
Lattice structure
Topology optimization
3D printers
Additives
Aerospace engineering
Modal analysis
Shape optimization
Stiffness
Structural optimization
Topology
Aerospace components
Density distributions
Design optimization
Finite element analyse
Lattice structures
Optimization framework
Selective laser melting
Structure design
Structure optimization
Topology optimisation
Finite element method
Issue Date: 2021
Publisher: American Society of Mechanical Engineers (ASME)
Source: Ates, G. C., Demirtunç, M., Göçer, A. C., Doğru, A. H., Gorguluarslan, R. M., Gökdağ, İ., & Yavaş, H. (2021, November). Design of a 3D Aerospace Bracket Using Lattice Structures and Topology Optimization for Additive Manufacturing. In ASME International Mechanical Engineering Congress and Exposition (Vol. 85581, p. V004T04A010). American Society of Mechanical Engineers.
Abstract: In this study, a design optimization framework is presented that utilizes the topology and lattice structure optimization approaches to design an aerospace component for additive manufacturing (AM). In this framework, the topology optimization is first utilized to find the relative density distribution in the design space of the component that maximizes its stiffness under the volume and strength constraints. The optimized density distribution is used to generate an initial lattice structure topology. A two-step size optimization is also carried out using the beam element formulation in the FEA. The diameters of the strut members in the lattice structure are aimed to be kept within the manufacturability limits of the selective laser melting (SLM) process with AlSi10Mg alloy to satisfy the volume and stress constraints while maximizing the overall stiffness. Optimized designs are determined with four different lattice types. The best design among them is analyzed to ensure an additional natural frequency constraint using modal analysis. Thus, a novel lattice structure design is achieved that satisfies the strength and vibration-specific requirements of the aerospace component for a real-world application. The developed lattice structure design of the aerospace component is achieved with a 30% reduction in weight while still satisfying the desired requirements compared to the existing design in use. The presented lattice design optimization framework is presented in a way that is not application-specific so that it can also be used for the design of different components for AM. The future work includes experimental validation of the strength and vibration performances of the SLM-fabricated design. Copyright © 2021 by ASME
Description: American Society of Mechanical Engineers (ASME)
ASME 2021 International Mechanical Engineering Congress and Exposition, IMECE 2021 -- 1 November 2021 through 5 November 2021 -- -- 176672
URI: https://doi.org/10.1115/IMECE2021-71476
https://hdl.handle.net/20.500.11851/8664
ISBN: 9780791885581
Appears in Collections:Makine Mühendisliği Bölümü / Department of Mechanical Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

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