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Article

Imperfect architected materials: Mechanics and topology optimization

  • Damiano Pasini (a1) and James K. Guest (a2)

Abstract

This article examines two intertwined topics on architected materials with imperfections—their mechanics and optimum design. We first discuss the main factors that control defect sensitivity along with a range of strategies for defect characterization. The potency of both as-designed and as-manufactured defects on their macroscopic response is highlighted with an emphasis on those caused by additive manufacturing technology. As a natural extension of defect sensitivity, we describe the design approaches for architected materials with particular focus on systematic tools of topology optimization. Recent extensions to formally incorporate imperfections in the optimization formulation are discussed, where the ultimate goal is to generate architectures that are flaw-tolerant and perform robustly in the presence of imperfections. We conclude with an outlook on the field, highlighting potential areas of future research.

Copyright

COPYRIGHT: © Materials Research Society 2019 

References

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Imperfect architected materials: Mechanics and topology optimization

  • Damiano Pasini (a1) and James K. Guest (a2)

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