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The development and application of inhomogeneous porous structures have greatly benefitted from the emergence of additive manufacturing (AM) techniques. At the same time, the inherent constraints of AM techniques have highlighted the importance of design for AM. In this paper, a novel method is proposed to optimize the design of AM oriented porous structures and improve their structural performance. In particular, this method optimizes porous structures using embedded voids and incorporates two novel filters, one of which satisfies the minimum feature size constraint while the other facilitates a support-free manufacturing process. The performance of the method was validated via numerical analyses and experiments, the results of which confirmed the excellent stiffness properties and adaptability to the AM constraints of the designed porous structure.
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Zhao et al. (2018) studied this question.
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