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Advances in Nano Research Volume 13, Number 2, August 2022 , pages 113-120 DOI: https://doi.org/10.12989/anr.2022.13.2.113 |
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Assessment of nonlinear stability of geometrically imperfect nanoparticle-reinforced beam based on numerical method |
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Yuxin Zheng, Hongwei Jin and Congying Jiang
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| Abstract | ||
| In this paper, a finite element (FE) simulation has been developed in order to examine the nonlinear stability of reinforced sandwich beams with graphene oxide powders (GOPs). In this regard, the nonlinear stability curves have been obtained asuming that the beam is under compressive loads leading to its buckling. The beam is considered to be a three-layered sandwich beam with metal core and GOP reinforced face sheets and it is rested on elastic substrate. Moreover, a higher-order refined beam theory has been considered to formulate the sandwich beam by employing the geometrically perfect and imperfect beam configurations. In the solving procedure, the utalized finite element simulation contains a novel beam element in which shear deformation has been included. The calculated stability curves of GOP-reinforced sandwich beams are shown to be dependent on different parameters such as GOP amount, face sheet thickness, geometrical imperfection and also center deflection. | ||
| Key Words | ||
| finite element method; nonlinear stability; numerical simulation; sandwich beam | ||
| Address | ||
| Yuxin Zheng, Hongwei Jin and Congying Jiang: School of Civil Engineering and Architecture, Zhejiang Guangsha Vocational and Technical University of Construction, Dongyang 322100, Zhejiang, China | ||