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- W4311764544 endingPage "108029" @default.
- W4311764544 startingPage "108029" @default.
- W4311764544 abstract "Lightweight shape memory polymer (SMP) metamaterials integrated with high strength, high flexibility, and high recovery stress are highly desired in load carrying structures and devices. A grand challenge is that these desired properties have contradictory requirements, for instance between strength and flexibility, and between flexibility and recovery stress. In this study, an inverse design framework using statistical tools and machine learning models is developed to design thin-walled cellular structures with the desired properties. The discovered thin-walled cellular structures are 3D printed using a novel SMP, which exhibited excellent structural properties with record high specific recovery stress. For comparison purpose, lattice structures discovered previously are also 3D printed using the same SMP. The density normalized recovery stress of the validated lattice unit cells is 30% higher than that of the Octet lattice unit cell. The optimal thin-walled unit cells exhibit exponentially higher recovery stress than the honeycomb unit cell in the in-plane orientation and 50% higher recovery stress than other thin-walled structures (both unit cells and 4 × 4 structures). As compared to the solid SMP cylinders, the thin-walled unit cells exhibit 200% higher normalized recovery stress. The inverse design framework can be applied for structural optimization of various other designs and applications." @default.
- W4311764544 created "2022-12-28" @default.
- W4311764544 creator A5020920793 @default.
- W4311764544 creator A5022583120 @default.
- W4311764544 creator A5023874435 @default.
- W4311764544 date "2023-04-01" @default.
- W4311764544 modified "2023-10-18" @default.
- W4311764544 title "Inverse machine learning discovered metamaterials with record high recovery stress" @default.
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- W4311764544 doi "https://doi.org/10.1016/j.ijmecsci.2022.108029" @default.
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