Reduced stiffness buckling of sandwich cylindrical shells under uniform external pressure

Ohga, Mitao; Wijenayaka, Aruna Sanjeewa; Croll, James

doi:10.1016/j.tws.2005.03.006

Cited by 30 publications

(8 citation statements)

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“…It is clear that we have 3 × N × Q algebraic equations at boundary and domain grid points. The value of the buckling pressure is obtained by solving the standard eigenvalue equation presented in the partitioned form as: (25) can be treated as a conventional eigenvalue problem to obtain the buckling pressure and the corresponding mode shapes of the system.…”

Section: The Calculation Of Buckling Loadmentioning

confidence: 99%

“…An approximate analytical solution for the buckling of the composite sandwich cylindrical shell with clamped ends under uniform external pressure has been presented by Lopatin and Morozov [19]. Ohga et al [25] have applied the reduced stiffness lower bound method to solve the buckling problem of the sandwich cylindrical shell with simply supported ends. Stability of long cylindrical sandwich shells with different facings subjected to a lateral external pressure has been carried out by Birman and Simitres [6].…”

Section: Introductionmentioning

confidence: 99%

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Buckling analysis of sandwich orthotropic cylindrical shells by considering the geometrical imperfection in face sheets

Ahmadi

Pashaei

Jafari-Talookolaei

2019

ACM

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A three dimensional analysis for the buckling behavior of a sandwich orthotropic thick cylindrical shell under uniform lateral pressure has been presented. It is assumed that both ends of the shell have the simply supported conditions and the face sheets have an axisymmetric initial geometrical imperfection in the axial direction. The governing differential equations are derived based on the second Piola-Kirchhoff stress tensor and are reduced to a homogenous linear system of equations using differential quadrature method (DQM). The buckling pressures have been calculated for the shell with isotropic core and orthotropic face sheets with 0-degree orientation with respect to the hoop direction. Moreover, buckling pressure reduction parameter has been defined and computed for different imperfection parameters of face sheets and geometrical properties of sandwich shells. The results obtained in the present work are compared with finite element solutions and results reported in the literature and very good agreements have been observed. It is shown that the imperfections have higher effects on the buckling load of thick shells than thin ones. Likewise, it is found that the present method can capture the various geometrical imperfections observed during the manufacturing process or service life.

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Section: The Calculation Of Buckling Loadmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Buckling analysis of sandwich orthotropic cylindrical shells by considering the geometrical imperfection in face sheets

Ahmadi

Pashaei

Jafari-Talookolaei

2019

ACM

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“…This geometry is reinforced with carbon nanotube, and the material properties of the nanocomposite plates are estimated through the Mori-Tanaka approach. Ohga et al [21] analyzed the reduced stiffness buckling of the sandwich cylindrical shells under uniform external pressure and solved with FE method. Polit et al [22] studied the elastic stability and bending of FG graphene-reinforced porous nanocomposite curved beams applying HSDT with thickness stretch effect.…”

Section: Introductionmentioning

confidence: 99%

Buckling analysis of rectangular sandwich plates with functionally graded graphene-reinforced face layers

Shakouri

Mohseni

2020

J Braz. Soc. Mech. Sci. Eng.

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The buckling analysis of a rectangular sandwich plate smoothly reinforced with multilayered graphene nanoplatelet is presented. The equations of equilibrium are extracted using the principle of minimum total potential energy and the first-order shear deformation theory for the thick sandwich plate. Different graphene distributions are considered through the thickness of the plate, and the rule of mixture is used to obtain the effective properties of the reinforced nanocomposite. To solve the equations, the Fourier series is employed to describe the displacement components and the boundary conditions are considered to be simply supported for all edges. The results are verified with available research, and the effects of some important parameters on the buckling load of the sandwich plate are studied.

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“…Kardomateas and Simitses [2002; studied analytically the buckling of long sandwich cylindrical shells under external pressure. Ohga et al [2005] studied, both numerically and analytically, the reduced stiffness buckling of sandwich cylindrical shells under uniform external pressure. Sato and Patel [2007] and Sato et al [2008] studied the buckling behavior of a PIP system under hydrostatic pressure and developed a simplified solution for estimating a PIP system's buckling capacity.…”

Section: Introductionmentioning

confidence: 99%

Elastic buckling capacity of bonded and unbonded sandwich pipes under external hydrostatic pressure

Arjomandi

Taheri‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬

2010

JoMMS

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Sandwich pipes can be a potentially optimal system for use in deep-water applications. In recent years, there has been considerable interest in understanding the stability characteristics of these pipes under the governing loading conditions, with the aim of generating optimal design. External hydrostatic pressure is a critical loading condition that a submerged pipeline experiences during its installation and operational period.This article presents an analytical approach for estimating the bucking capacity of sandwich pipes with various structural configurations and core materials, subject to external hydrostatic pressure. The influence of adhesion between the core layer and inner or outer pipes is also a focus of this study. Beside the exact solution, two simplified equations are developed for estimating the buckling capacity of two configurations commonly used in practice. Details of both the exact and simplified analytical formulations are presented and the required parameters are defined. The efficiency and integrity of the proposed simplified solutions are compared with a solution developed by other researchers. A comprehensive series of finite element eigenvalue buckling analyses was also conducted to evaluate the accuracy and applicability of the proposed solutions.

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Reduced stiffness buckling of sandwich cylindrical shells under uniform external pressure

Cited by 30 publications

References 1 publication

Buckling analysis of sandwich orthotropic cylindrical shells by considering the geometrical imperfection in face sheets

Buckling analysis of sandwich orthotropic cylindrical shells by considering the geometrical imperfection in face sheets

Buckling analysis of rectangular sandwich plates with functionally graded graphene-reinforced face layers

Elastic buckling capacity of bonded and unbonded sandwich pipes under external hydrostatic pressure

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