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Advances in Nano Research Volume 7, Number 3, May 2019 , pages 181-190 DOI: https://doi.org/10.12989/anr.2019.7.3.181 |
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Multiscale modeling approach for thermal buckling analysis of nanocomposite curved structure |
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Kulmani Mehar and Subrata Kumar Panda
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| Abstract | ||
| The thermal buckling temperature values of the graded carbon nanotube reinforced composite shell structure is explored using higher-order mid-plane kinematics and multiscale constituent modeling under two different thermal fields. The critical values of buckling temperature including the effect of in-plane thermal loading are computed numerically by minimizing the final energy expression through a linear isoparametric finite element technique. The governing equation of the multiscale nanocomposite is derived via the variational principle including the geometrical distortion through Green-Lagrange strain. Additionally, the model includes different grading patterns of nanotube through the panel thickness to improve the structural strength. The reliability and accuracy of the developed finite element model are varified by comparison and convergence studies. Finally, the applicability of present developed model was highlight by enlighten several numerical examples for various type shell geometries and design parameters. | ||
| Key Words | ||
| thermal buckling; FG-CNT; HSDT; thermal load; FEM; micromechanical model | ||
| Address | ||
| (1) Kulmani Mehar: Department of Mechanical Engineering, Madanapalle Institute of Technology & Science, Madanapalle, India; (2) Subrata Kumar Panda: Department of Mechanical Engineering, National Institute of Technology Rourkela, Odisha, 769008, India. | ||