A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Nonlinear thermo-mechanical static analysis of toroidal shells made of nanocomposite/fiber reinforced composite plies surrounded by elastic medium
https://orcid.org/0000-0002-2941-0391
https://orcid.org/0000-0003-1907-9479
Abstract This article aims to evaluate the geometrical nonlinear behavior of toroidal shell segments surrounded by elastic medium under two types of axial edge-loading and external pressure, including the thermal effects. The considered shells are assumed to be made of some composite plies incorporating three constituents: carbon nanotubes (CNTs) and graphene nanoplatelets (GPLs) as nanocomposites, fibers and polymeric resin. The considered nanocomposites are assumed to be randomly oriented and functionally distributed in the resin. The governing equations are extended based the first-order shear deformation theory (FSDT) for the moderately thick shells. Also, an analytical solution using Galerkin method is proposed which yields to a closed-form load–deflection relationship. The present formulation has two important advantages which justify its novelty. It provides a robust tool for geometrical nonlinear static analysis of hybrid GPL/CNT/fiber/resin composite shallow toroidal shells with no computational efforts. Although the present method incorporates thin and moderately thick shells with a complicated thermo-mechanical specifications, it has been extended simpler than the other related formulations proposed in the previous studies. In order to validate the applicability of the extended formulation, some benchmark examples from the existing literature are considered and the corresponding equilibrium paths are compared with those are obtained by using the present method. Also, the parametric studies incorporate the effects of various geometrical, mechanical, and thermal parameters on the nonlinear equilibrium path of the proposed shells. The verification procedure and the performed parametric studies show that the proposed method and extended formulation enable a strong tool for the geometrical nonlinear analysis of such shells.
Highlights A novel composite model have been discussed. The considered nanocomposites are carbon nanotubes (CNTs) and graphene nanoplatelets (GPLs) which are both randomly oriented and functionally distributed in the resinmixed. Nonlinear behavior of toroidal shell segments surrounded by elastic medium have been analyzed. Some benchmark results about buckling and stability response have been obtained.
Nonlinear thermo-mechanical static analysis of toroidal shells made of nanocomposite/fiber reinforced composite plies surrounded by elastic medium
https://orcid.org/0000-0002-2941-0391
https://orcid.org/0000-0003-1907-9479
Abstract This article aims to evaluate the geometrical nonlinear behavior of toroidal shell segments surrounded by elastic medium under two types of axial edge-loading and external pressure, including the thermal effects. The considered shells are assumed to be made of some composite plies incorporating three constituents: carbon nanotubes (CNTs) and graphene nanoplatelets (GPLs) as nanocomposites, fibers and polymeric resin. The considered nanocomposites are assumed to be randomly oriented and functionally distributed in the resin. The governing equations are extended based the first-order shear deformation theory (FSDT) for the moderately thick shells. Also, an analytical solution using Galerkin method is proposed which yields to a closed-form load–deflection relationship. The present formulation has two important advantages which justify its novelty. It provides a robust tool for geometrical nonlinear static analysis of hybrid GPL/CNT/fiber/resin composite shallow toroidal shells with no computational efforts. Although the present method incorporates thin and moderately thick shells with a complicated thermo-mechanical specifications, it has been extended simpler than the other related formulations proposed in the previous studies. In order to validate the applicability of the extended formulation, some benchmark examples from the existing literature are considered and the corresponding equilibrium paths are compared with those are obtained by using the present method. Also, the parametric studies incorporate the effects of various geometrical, mechanical, and thermal parameters on the nonlinear equilibrium path of the proposed shells. The verification procedure and the performed parametric studies show that the proposed method and extended formulation enable a strong tool for the geometrical nonlinear analysis of such shells.
Highlights A novel composite model have been discussed. The considered nanocomposites are carbon nanotubes (CNTs) and graphene nanoplatelets (GPLs) which are both randomly oriented and functionally distributed in the resinmixed. Nonlinear behavior of toroidal shell segments surrounded by elastic medium have been analyzed. Some benchmark results about buckling and stability response have been obtained.
Nonlinear thermo-mechanical static analysis of toroidal shells made of nanocomposite/fiber reinforced composite plies surrounded by elastic medium
https://orcid.org/0000-0002-2941-0391
https://orcid.org/0000-0003-1907-9479
Abstract This article aims to evaluate the geometrical nonlinear behavior of toroidal shell segments surrounded by elastic medium under two types of axial edge-loading and external pressure, including the thermal effects. The considered shells are assumed to be made of some composite plies incorporating three constituents: carbon nanotubes (CNTs) and graphene nanoplatelets (GPLs) as nanocomposites, fibers and polymeric resin. The considered nanocomposites are assumed to be randomly oriented and functionally distributed in the resin. The governing equations are extended based the first-order shear deformation theory (FSDT) for the moderately thick shells. Also, an analytical solution using Galerkin method is proposed which yields to a closed-form load–deflection relationship. The present formulation has two important advantages which justify its novelty. It provides a robust tool for geometrical nonlinear static analysis of hybrid GPL/CNT/fiber/resin composite shallow toroidal shells with no computational efforts. Although the present method incorporates thin and moderately thick shells with a complicated thermo-mechanical specifications, it has been extended simpler than the other related formulations proposed in the previous studies. In order to validate the applicability of the extended formulation, some benchmark examples from the existing literature are considered and the corresponding equilibrium paths are compared with those are obtained by using the present method. Also, the parametric studies incorporate the effects of various geometrical, mechanical, and thermal parameters on the nonlinear equilibrium path of the proposed shells. The verification procedure and the performed parametric studies show that the proposed method and extended formulation enable a strong tool for the geometrical nonlinear analysis of such shells.
Highlights A novel composite model have been discussed. The considered nanocomposites are carbon nanotubes (CNTs) and graphene nanoplatelets (GPLs) which are both randomly oriented and functionally distributed in the resinmixed. Nonlinear behavior of toroidal shell segments surrounded by elastic medium have been analyzed. Some benchmark results about buckling and stability response have been obtained.
Nonlinear thermo-mechanical static analysis of toroidal shells made of nanocomposite/fiber reinforced composite plies surrounded by elastic medium
Shahmohammadi, Mohammad Amin (author) / Mirfatah, Sayed Mohamad (author) / Emadi, Sirous (author) / Salehipour, Hamzeh (author) / Civalek, Ömer (author)
Thin-Walled Structures ; 170
2021-10-28
Article (Journal)
Electronic Resource
English
Thermo-Mechanical Vibration of Double-Orthotropic Nanoplates Surrounded by Elastic Medium
| British Library Online Contents | 2013
| British Library Online Contents | 2016
Stability of a fiber surrounded by two shells in an elastic matrix
| British Library Online Contents | 2013
A design of laminated composite plates using graded orthotropic fiber-reinforced composite plies
| British Library Online Contents | 2015