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Structural Engineering and Mechanics Volume 83, Number 4, August25 2022 , pages 465-473 DOI: https://doi.org/10.12989/sem.2022.83.4.465 |
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A numerical study on nonlinear stability of higher-order sandwich beams with cellular core and nanocomposite face sheets |
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Ke Ding, Hu Jia, Jun Xu, Yi Liu, Haneen M. Al-Tamimi and Mohamed Amine Khadimallah
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| Abstract | ||
| In this research, a numerical study has been provided for examining the nonlinear stability behaviors of sandwich beams having a cellular core and two face sheets made of nanocomposites. The nonlinear stability behaviors of the sandwich beam having geometrically perfect/imperfect shapes have been studied when it is subjected to a compressive buckling load. The nanocomposite face sheets are made of epoxy reinforced by graphene oxide powders (GOPs). Also, the core has the shape of a honeycomb with regular configuration. Using finite element method based on a higher-order deformation beam element, the system of equations of motions have been solved to derive the stability curves. Several parameters such as face sheet thickness, core wall thickness, graphene oxide amount and boundary conditions have remarkable influences on stability curves of geometrically perfect/imperfect sandwich beams. | ||
| Key Words | ||
| finite element method; nonlinear stability; numerical simulation; sandwich beam | ||
| Address | ||
| Ke Ding, Hu Jia, Jun Xu, Yi Liu: Department of Civil Engineering and Architecture, Nanyang Normal University, Nanyang 473061, Henan, China; Nanyang Lingyu Machinery Co., Ltd., Nanyang 473000, Henan, China Haneen M. Al-Tamimi: Air Conditioning and Refrigeration Techniques Engineering Department, Al-Mustaqbal University College, Babylon, Iraq Mohamed Amine Khadimallah: Civil Engineering Department, College of Engineering, Prince Sattam Bin Abdulaziz University, Al-Kharj, 16273, Saudi Arabia; Laboratory of Systems and Applied Mechanics, Polytechnic School of Tunisia, University of Carthage, Tunis, Tunisia | ||