Analysis of the effect of stiffener profile on buckling strength in composite isogrid stiffened shell under axial loading

GH Rahimi, M Zandi, SF Rasouli - Aerospace science and technology, 2013 - Elsevier
In this paper, the buckling behavior of thin-walled GFRP cylindrical shells with triangular
lattice patterned reinforcements formed by helical and circumferential ribs under axial force …

On the free vibrations of joined grid-stiffened composite conical-cylindrical shells

M Zarei, GH Rahimi, M Hemmatnezhad - Thin-Walled Structures, 2021 - Elsevier
The present study aims to investigate the vibrational characteristics of joined stiffened
conical-cylindrical composite shells using experimental, numerical and analytical …

Experimental, numerical and analytical investigation of free vibrational behavior of GFRP-stiffened composite cylindrical shells

M Hemmatnezhad, GH Rahimi, M Tajik, F Pellicano - Composite Structures, 2015 - Elsevier
The present research aims to investigate the vibration characteristics of stiffened composite
cylindrical shells using experimental, numerical and analytical techniques. The specimens …

On the buckling resistance of grid-stiffened composite conical shells under compression

M Zarei, GH Rahimi, M Hemmatnezhad - Engineering Structures, 2021 - Elsevier
In this paper, an analytical approach has been employed to investigate the global buckling
behavior of grid-stiffened composite conical shells with cross stiffeners, on the basis of the …

Free vibrational characteristics of grid-stiffened truncated composite conical shells

M Zarei, GH Rahimi, M Hemmatnezhad - Aerospace Science and …, 2020 - Elsevier
In this paper, the free vibrational behavior of composite conical shells stiffened by bevel
stiffeners is investigated using experimental, analytical and numerical techniques. The …

The effects of helical ribs' number and grid types on the buckling of thin-walled GFRP-stiffened shells under axial loading

M Yazdani, GH Rahimi - Journal of Reinforced Plastics and …, 2010 - journals.sagepub.com
The results of an experimental study on the buckling behavior of thin-walled GFRP-stiffened
cylindrical shells are presented. The buckling behavior of stiffened shells, with lozenge and …

Global buckling analysis of laminated sandwich conical shells with reinforced lattice cores based on the first-order shear deformation theory

M Zarei, GH Rahimi, M Hemmatnezhad - International Journal of …, 2020 - Elsevier
In this paper, a new effective smeared stiffener method is presented for investigating the
global buckling behavior of the laminated sandwich conical shells with lattice cores …

On the free vibrations of grid-stiffened composite cylindrical shells

M Hemmatnezhad, GH Rahimi, R Ansari - Acta Mechanica, 2014 - Springer
A unified analytical approach is applied for investigating the vibrational behavior of grid-
stiffened composite cylindrical shells considering the flexural behavior of the ribs. A smeared …

Buckling resistance of joined composite sandwich conical–cylindrical​ shells with lattice core under lateral pressure

M Zarei, GH Rahimi - Thin-Walled Structures, 2022 - Elsevier
The main impetus of the present study is to investigate the buckling analysis of joined
composite sandwich conical–cylindrical shells with reinforced lattice core subjected to …

Optimal design of trapezoid stiffeners of composite cylindrical shells subjected to hydrostatic pressure

R Wei, K Shen, G Pan - Thin-Walled Structures, 2021 - Elsevier
Optimization of a composite cylindrical pressure hull subjected to hydrostatic pressure with
trapezoidal stiffeners is considered in this paper. The composite cylindrical shell is …