Buckling analysis of a cylindrical shell, under neutron radiation environment

Arani, A. Ghorbanpour; Ahmadi, Mohamadreza; Ahmadi, Abbas; Rastgoo, Abbas; Sepyani, H.A.

doi:10.1016/j.nucengdes.2011.08.022

Cited by 3 publications

(4 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, as to be expected, the obtained values differ from the initial state. In order to avoid the problems of divergence, a new value of ν was substituted to Equation (12). Next, the improved value of e r is obtained, and new values of E and ν are defined.…”

Section: Methodsmentioning

confidence: 99%

“…Ghorbanpour Arani et al [12] investigated the buckling of a cylindrical shell in the neutron radiation environment under combined static and periodic axial forces. They illustrated how the radiation induced porosity in elastic materials changed their thermal, electrical and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

“…In studies [11][12][13][14][15][16][17], a generalized virtual modeling method using modern computer technologies to solve one-dimensional and two-dimensional nonlinear problems was proposed.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Stability Improvement of Flexible Shallow Shells Using Neutron Radiation

et al. 2020

View full text Add to dashboard Cite

Microelectromechanical systems (MEMS) are increasingly playing a significant role in the aviation industry and space exploration. Moreover, there is a need to study the neutron radiation effect on the MEMS structural members and the MEMS devices reliability in general. Experiments with MEMS structural members showed changes in their operation after exposure to neutron radiation. In this study, the neutron irradiation effect on the flexible MEMS resonators’ stability in the form of shallow rectangular shells is investigated. The theory of flexible rectangular shallow shells under the influence of both neutron irradiation and temperature field is developed. It consists of three components. First, the theory of flexible rectangular shallow shells under neutron radiation in temperature field was considered based on the Kirchhoff hypothesis and energetic Hamilton principle. Second, the theory of plasticity relaxation and cyclic loading were taken into account. Third, the Birger method of variable parameters was employed. The derived mathematical model was solved using both the finite difference method and the Bubnov–Galerkin method of higher approximations. It was established based on a few numeric examples that the irradiation direction of the MEMS structural members significantly affects the magnitude and shape of the plastic deformations’ distribution, as well as the forces magnitude in the shell middle surface, although qualitatively with the same deflection the diagrams of the main investigated functions were similar.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Stability Improvement of Flexible Shallow Shells Using Neutron Radiation

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Researchers have frequently studied thermal buckling analysis of functionally graded plates [7][8][9][10], as well as thermal buckling in structures composed of composite materials [11,12], among other related works. Moreover, in various industrial sectors such as pipeline industry [13,14], aerospace engineering [15,16], oil refineries [17,18], and nuclear engineering [19], the buckling of thin plates caused by thermal loads has garnered significant attention in the design and analysis of engineering structures.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of thermal buckling and post-buckling behavior of an EN AW 6016-T4 car roof assembled in a steel body-in-white

da Silva,

Cellard,

Geslain

et al. 2023

Mechanics & Industry

View full text Add to dashboard Cite

The automotive industry is undergoing significant changes driven by factors such as reducing carbon dioxide emissions, advancing technology, evolving regulations, and the emergence of new energy sources. Lightweight materials, particularly aluminum alloys, are being extensively researched and integrated into vehicles to reduce weight and improve performance. However, the heating process during vehicle production can cause thermal buckling in thin aluminum alloy structures, affecting their appearance and quality. While thermal buckling has been studied in other industries, research in the automotive sector, particularly for non-structural parts like car roofs, is limited. This study uses numerical simulation to predict thermal buckling and post-buckling behavior of a EN AW 6016-T4 alloy car roof assembled in a predominantly steel body-in-white. The research findings indicate that roof buckling occurs at a relatively low temperature difference of approximately 60 °C, which is lower than the maximum temperatures experienced during the painting phases in the automotive industry. Consequently, undulations in the roof's shape become apparent, underscoring the importance of design modifications to ensure visual conformity. Validation through physical testing confirms the model's accuracy, providing valuable insights for designing lightweight structures with improved performance and aesthetics.

show abstract

Analytical Solution and Buckling of Hemi-Ellipsoidal Shell Structures of Revolution under Uniformly Distributed Load

Chanto

Pulngern

Tangbanjongkij

et al. 2023

Int. J. Str. Stab. Dyn.

View full text Add to dashboard Cite

This paper focuses on the analytical procedure for determining novel exact expressions for internal forces and displacements of hemi-ellipsoidal shells formed as an axisymmetric shell of revolution under uniformly distributed load such as imposed loads. The simplest form of expressions for solutions is derived based on the linear membrane theory under symmetrical loading that is formed as a shell of revolution. The results have been validated and have a good consistency with numerical solutions from the finite-element method (FEM) which are derived based on the principle of virtual work and differential geometry. The obtained analytical exact solution is only valid for small displacements or if the response does not exceed the linearity limit. In cases of large displacements, geometrical nonlinear finite-element analysis is recommended to determine the solution. The linearity limit determination is demonstrated, and the effects of shells’ geometry, thickness, and magnitude of applied loads are presented. Additionally, the linear buckling analysis has been performed. The study found that the size ratio, thickness, and support condition have a significant effect on the critical load of the first mode, and the hemispherical shells have the highest buckling resistance due to the geometry.

show abstract

Buckling analysis of a cylindrical shell, under neutron radiation environment

Cited by 3 publications

References 31 publications

Stability Improvement of Flexible Shallow Shells Using Neutron Radiation

Stability Improvement of Flexible Shallow Shells Using Neutron Radiation

Numerical investigation of thermal buckling and post-buckling behavior of an EN AW 6016-T4 car roof assembled in a steel body-in-white

Analytical Solution and Buckling of Hemi-Ellipsoidal Shell Structures of Revolution under Uniformly Distributed Load

Contact Info

Product

Resources

About