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        A Finite Element Based Progressive Failure Analysis of Carbon Nanotubes/Polymer/Fiber Reinforced Laminated Composite Tapered Panels

        Mesfin Kebede Kassa,Rajeshkumar Selvaraj,Ananda Babu Arumugam 한국섬유공학회 2022 Fibers and polymers Vol.23 No.12

        This paper presents the progressive failure analysis of carbon nano tubes/polymer/fiber reinforced laminatedcurved composite panels under transverse pressure load distributed over the panel surface for various taper configurations. The ply-by-ply stresses were computed using the finite element method with displacement fields derived based on higherorder shear deformation theory (HSDT). The first ply failure was predicted based on Tsai-Wu failure criterion, and thestiffness degradation method were employed to track post-failure behavior and failure progression. The verification of thecurrent method is performed by comparing the results of the FE analysis with the numerical results available in literature andexperimental tests. Finally, various parametric analysis were performed to investigate the influence of MWCNTsconcentration, taper configurations and curved geometries on the failure characteristics. It was noticed that the failureresistance of the panel significantly enhanced with the addition of CNT filler, regardless of the considered taperconfigurations. It was also noticed that the hyperbolic and cylindrical geometries have the highest and lowest overall stiffnessand strength. It was observed that the taper configuration TC-3 results a higher LPF load among the other taperconfigurations for all the considered curved geometries. Finally, the present work could be used as a guide to study the failurecharacteristics of CNT reinforced laminated tapered curved composite panels, which finds many application in finds manyapplications in windmill, turbine and helicopter blades.

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