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Advances in Concrete Construction Volume 20, Number 4, October 2025 , pages 325-347 DOI: https://doi.org/10.12989/acc.2025.20.4.325 |
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A novel higher-order modeling of an auxetic metamaterial reinforced cylindrical shell |
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Mohanad Hatem Shadhar, Zaid A. Mohammed, Yasir W. Abduljaleel, Juan José Flores Fiallos, Lenin Santiago Orozco Cantos, Víctor Miguel Toalombo Vargas, Navin Kedia, Muhannad Riyadh Alasiri and Saiful Islam
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| Abstract | ||
| This research advances a sophisticated continuum framework for analyzing cylindrical shells enhanced by auxetic (negative Poisson's ratio) metamaterial cores. A unique kinematic description, specifically formulated to capture non-uniform strain distributions through the shell's thickness, replaces conventional shear deformation theories. The analyzed composite system integrates a metallic phase (copper) incorporating architectured, three-dimensional graphene-origami reinforcements. The effective macroscopic properties of this complex material are determined via an empirically-informed micromechanical homogenization scheme, enabling the rigorous definition of constitutive behavior within the shell's intrinsic curvilinear geometry. Governing equations describing the coupled structural response are systematically derived through an energy-based variational principle. A comprehensive numerical investigation then explores the influence of critical design parameters on the shell's mechanical performance under quasi-static transverse loading. Key variables examined include the geometric folding characteristics of the graphene-origami reinforcement, its volumetric concentration within the matrix, and the effect of uniform and non-uniform thermal field environments. Results quantitatively illustrate the significant impact of these factors on loaddisplacement characteristics, stress redistribution, and the overall structural efficiency of the auxetic-reinforced shell system. | ||
| Key Words | ||
| auxetic metamaterial; folding characteristic; graphene origami; shear deformable; three-dimensional reinforcement; variational-based formulation | ||
| Address | ||
| (1) Mohanad Hatem Shadhar, Yasir W. Abduljaleel: Department of Civil Engineering, College of Engineering, Al-Iraqia University, Baghdad, Iraq; (2) Zaid A. Mohammed: Al-Bayan University, Technical College of Engineering, Department of Medical Instrument Technical Engineering, Iraq; (3) Juan José Flores Fiallos, Lenin Santiago Orozco Cantos, Víctor Miguel Toalombo Vargas: Universidad Nacional de Chimborazo, Riobamba, Chimborazo 060106, Ecuador; (4) Navin Kedia: NIMS School of Civil Engineering, NIMS University Rajasthan, Jaipur, India; (5) Muhannad Riyadh Alasiri, Saiful Islam: Civil Engineering Department, College of Engineering, King Khalid University, Abha 61421,Saudi Arabia. | ||
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