Designs, Volume 4, Issue 4 (December 2020) – 18 articles
Cover Story (view full-size image): Metal additive manufacturing (MAM) can fabricate complex, intricately designed structures. However, the thermomechanical behavior of this manufacturing process is still not completely understood. The inherent thermal effects in MAM create residual stresses and unpredictable microstructure. Therefore, the possible designs computed via topology optimization (TO) are difficult to manufacture using MAM. We propose a novel digital design technique combining topology and lattice optimization to achieve uniform thermal distribution in the printed part. Our results indicate that lattice structures inserted in regions of topologically optimized geometries succeed in alleviating local thermal accumulations and thus improve the manufacturability of parts using MAM. View this paper.
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