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Geomechanics and Engineering Volume 32, Number 6, March25 2023 , pages 615-625 DOI: https://doi.org/10.12989/gae.2023.32.6.615 |
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Thermal post-buckling behavior of GPLRMF cylindrical shells with initial geometrical imperfection |
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Yi-Wen Zhang, Gui-Lin She, Lei-Lei Gan and Yin-Ping Li
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| Abstract | ||
| Initial geometrical imperfection is an important factor affecting the structural characteristics of plate and shell structures. Studying the effect of geometrical imperfection on the structural characteristics of cylindrical shell is beneficial to explore the thermal post-buckling response characteristics of cylindrical shell. Therefore, we devote to investigating the thermal post-buckling behavior of graphene platelets reinforced mental foam (GPLRMF) cylindrical shells with geometrical imperfection. The properties of GPLRMF material with considering three types of graphene platelets (GPLs) distribution patterns are introduced firstly. Subsequently, based on Donnell nonlinear shell theory, the governing equations of cylindrical shell are derived according to Eulerian-Lagrange equations. Taking into account two different boundary conditions namely simply supported (S-S) and clamped supported (C-S), the Galerkin principle is used to solve the governing equations. Finally, the impact of initial geometrical imperfections, the GPLs distribution types, the porosity distribution types, the porosity coefficient as well as the GPLs mass fraction on the thermal post-buckling response of the cylindrical shells are analyzed. | ||
| Key Words | ||
| cylindrical shells; Galerkin' method; graphene platelet; initial geometrical imperfection; metal foams; thermal post-buckling | ||
| Address | ||
| Yi-Wen Zhang, Gui-Lin She, Lei-Lei Gan and Yin-Ping Li: College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing 400044, China | ||