A functionally graded auxetic metamaterial beam with tunable nonlinear free vibration characteristics via graphene origami
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- @Article{ZHAO:2022:tws,
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author = "Shaoyu Zhao and Yingyan Zhang and Yihe Zhang and
Jie Yang and Sritawat Kitipornchai",
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title = "A functionally graded auxetic metamaterial beam with
tunable nonlinear free vibration characteristics via
graphene origami",
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journal = "Thin-Walled Structures",
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volume = "181",
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pages = "109997",
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year = "2022",
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ISSN = "0263-8231",
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DOI = "doi:10.1016/j.tws.2022.109997",
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URL = "https://www.sciencedirect.com/science/article/pii/S0263823122005961",
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keywords = "genetic algorithms, genetic programming, Mechanical
metamaterial, Functionally graded beam, Timoshenko beam
theory, Negative poisson's ratio, GP-assisted
micromechanical model, Nonlinear behavior",
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abstract = "Auxetic metamaterials with negative Poisson's ratio
(NPR) are attracting tremendous attention due to their
unusual and intriguing mechanical properties. This
paper proposes a novel functionally graded (FG) beam
made of graphene origami (GOri)-enabled auxetic
metamaterials (GOEAMs) and investigates its nonlinear
free vibration characteristics tuned by GOri. The beam
consists of multilayer GOEAMs with GOri content changed
across the beam thickness in a layer-wise mode such
that the auxetic property and other material properties
are varied in a graded form and can be effectively
estimated by genetic programming (GP)-assisted
micromechanical models. The Timoshenko beam theory and
von Karman type nonlinearity are adopted herein to
derive the nonlinear kinematic equations that are
numerically solved by the differential quadrature (DQ)
approach. Detailed parametric studies are performed to
discuss the influences of GOri content, distribution
pattern, GOri folding degree, and temperature on the
nonlinear frequencies of FG-GOEAM beams. Numerical
results indicate that the nonlinear free vibration
behaviors of the beam can be effectively tuned via GOri
parameter and distribution",
- }
Genetic Programming entries for
Shaoyu Zhao
Yingyan Zhang
Yihe Zhang
Jie Yang
Sritawat Kitipornchai
Citations