Multiscale Optimization of 3D‐Printed Beam‐Based Lattice Structures through Elastically Tailored Unit Cells
نویسندگان
چکیده
Herein, a numerical multiscale tool is developed to design 3D periodic lattice structures. The work motivated by the high freedom of additive manufacturing technologies, which enable complex structures be printed. A finite‐element‐based free‐material optimization method used determine ideal orthotropic material properties macrostructure space. Subsequently, population‐based algorithm established optimized microscopic unit cells with desired structural properties. variables are coordinates skeleton nodes defined within cell space, and connectivities between them resulting in truss skeleton. For calculation mechanical individual cells, an effective Timoshenko beam‐based finite element developed. macroscale structure can constructed periodically filling domain customized representing metamaterial. demonstrated beam problems compliance constraints. These macroscopic demonstrators were also 3D‐printed. benefit regarding weight‐specific performance validated through benchmarking solutions using well‐known standard cells.
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ژورنال
عنوان ژورنال: Advanced Engineering Materials
سال: 2022
ISSN: ['1527-2648', '1438-1656']
DOI: https://doi.org/10.1002/adem.202201385