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- W4383742110 abstract "This research will develop a new set of mechanical metamaterials with simultaneous ideal elastic isotropy and extreme negative Poisson's ratio through a topology optimization approach. Firstly, we propose a new method to generate a three-dimensional ground structure with geometric cubic symmetry. Secondly, a more efficient topology optimization method is developed by utilizing a small number of both integer and continuous design variables for topological description of the design based on the discrete ground structure. Thirdly, two new geometric constraints are incorporated into the mathematical formulation to ensure creation of designs that are practical. Finally, the genetic algorithm is used to solve this type of mixed-integer programming problems. Several numerical examples have been used to demonstrate the generation of a series of three-dimensional microarchitectures from a single integrated design. The microlattices can also be customized to obtain a broad range of negative Poisson's ratios across different relative densities. The effective material properties and macroscopic deformation behaviors of the designs are numerically validated using commercial software." @default.
- W4383742110 created "2023-07-11" @default.
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- W4383742110 date "2023-12-01" @default.
- W4383742110 modified "2023-09-28" @default.
- W4383742110 title "Three-dimensional metamaterials exhibiting extreme isotropy and negative Poisson's ratio" @default.
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- W4383742110 doi "https://doi.org/10.1016/j.ijmecsci.2023.108617" @default.
- W4383742110 hasPublicationYear "2023" @default.
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