Accurate buckling analysis for shear deformable FGM cylindrical shells under axial compression and thermal loads

2015 ◽  
Vol 123 ◽  
pp. 246-256 ◽  
Author(s):  
Jiabin Sun ◽  
Xinsheng Xu ◽  
C.W. Lim ◽  
Weiyu Qiao
Keyword(s):  
Axial Compression ◽  
Cylindrical Shells ◽  
Buckling Analysis ◽  
Thermal Loads ◽  
Shear Deformable

RELIABILITY ASSESSMENT OF AXIALLY COMPRESSED COMPOSITE CYLINDRICAL SHELLS WITH RANDOM IMPERFECTIONS

2011 ◽  
Vol 11 (02) ◽  
pp. 215-236 ◽  
Author(s):  
MATTEO BROGGI ◽  
ADRIANO CALVI ◽  
GERHART I. SCHUËLLER
Keyword(s):  
Mathematical Models ◽  
Axial Compression ◽  
Cylindrical Shells ◽  
Reliability Assessment ◽  
Buckling Analysis ◽  
Buckling Load ◽  
Experimental Results ◽  
Drastic Decrease ◽  
Different Types ◽  
Probability And Statistics

Cylindrical shells under axial compression are susceptible to buckling and hence require the development of enhanced underlying mathematical models in order to accurately predict the buckling load. Imperfections of the geometry of the cylinders may cause a drastic decrease of the buckling load and give rise to the need of advanced techniques in order to consider these imperfections in a buckling analysis. A deterministic buckling analysis is based on the use of the so-called knockdown factors, which specifies the reduction of the buckling load of the perfect shell in order to account for the inherent uncertainties in the geometry. In this paper, it is shown that these knockdown factors are overly conservative and that the fields of probability and statistics provide a mathematical vehicle for realistically modeling the imperfections. Furthermore, the influence of different types of imperfection on the buckling load are examined and validated with experimental results.

Effect of a Dent of Different Sizes and Angles of Inclination on Buckling Strength of a Short Stainless Steel Cylindrical Shell Subjected to Uniform Axial Compression

2007 ◽  
Vol 10 (5) ◽  
pp. 581-591 ◽  
Author(s):  
B. Prabu ◽  
N. Bujjibabu ◽  
S. Saravanan ◽  
A. Venkatraman
Keyword(s):  
Stainless Steel ◽  
Cylindrical Shell ◽  
Axial Compression ◽  
Cylindrical Shells ◽  
Buckling Analysis ◽  
Buckling Strength ◽  
Non Linear ◽  
Geometrical Imperfections ◽  
Steel Cylindrical Shell

Generally, thin cylindrical shells are susceptible for geometrical imperfections like non-circularity, non-cylindricity, dents, swellings etc. All these geometrical imperfections decrease the static buckling strength of thin cylindrical shells, but in this paper only effect of a dent on strength of a short (L / D ∼1 and R/t = 280) stainless steel cylindrical shell is considered for analysis. The dent is modeled on the FE surface of perfect cylindrical shell for different angles of inclination and sizes at half the height of cylindrical shell. The cylindrical shells with a dent are analyzed using non-linear static buckling analysis. From the results it is found that in case of shorter dents, size and angle of inclination dents do not have much effect on static buckling strength of thin cylindrical shells, where as in the case of long dents, size and angle of inclination of dents have significant effect. But both short and long dents reduce the static buckling strength drastically.

Post-buckling analysis of GPLs reinforced porous cylindrical shells under axial compression and hydrostatic pressure

2022 ◽  
Vol 172 ◽  
pp. 108834
Author(s):  
Guangxin Sun ◽  
Shengbo Zhu ◽  
Rumin Teng ◽  
Jiabin Sun ◽  
Zhenhuan Zhou ◽  
...  
Keyword(s):  
Hydrostatic Pressure ◽  
Axial Compression ◽  
Cylindrical Shells ◽  
Buckling Analysis ◽  
Post Buckling

709 Buckling Analysis of Cross-Ply Laminated Cylindrical Shells with a Rectangular Cut-Out under Axial Compression

2011 ◽  
Vol 2011 (0) ◽  
pp. 202-203
Author(s):  
Satoru TAKANEZAWA ◽  
Daisuke NAKATA ◽  
Hisao KIKUGAWA ◽  
Kazufumi UDA ◽  
Hirakazu KASUYA
Keyword(s):  
Axial Compression ◽  
Cylindrical Shells ◽  
Buckling Analysis ◽  
Laminated Cylindrical Shells

POSTBUCKLING OF SHEAR-DEFORMABLE ANISOTROPIC LAMINATED CYLINDRICAL SHELLS UNDER AXIAL COMPRESSION

2008 ◽  
Vol 08 (03) ◽  
pp. 389-414 ◽  
Author(s):  
ZHI-MIN LI ◽  
HUI-SHEN SHEN
Keyword(s):  
Cylindrical Shell ◽  
Axial Compression ◽  
Perturbation Technique ◽  
Cylindrical Shells ◽  
Anisotropic Shell ◽  
Equilibrium Path ◽  
Singular Perturbation Technique ◽  
Initial Geometric Imperfections ◽  
Shear Deformable ◽  
Laminated Cylindrical Shells

A postbuckling analysis is presented for a shear-deformable anisotropic laminated cylindrical shell of finite length subjected to axial compression. The material of each layer of the shell is assumed to be linearly elastic, anisotropic and fiber-reinforced. The governing equations are based on a higher order shear-deformable shell theory with the von Kármán–Donnell type of kinematic nonlinearity and including the extension/twist, extension/flexural and flexural/twist couplings. The nonlinear prebuckling deformations and initial geometric imperfections of the shell are both taken into account. A singular perturbation technique is employed to determine the buckling loads and postbuckling equilibrium paths. The numerical illustrations concern the postbuckling response of perfect and imperfect, moderately thick, anisotropic laminated cylindrical shells with different values of shell parameters and stacking sequence. The results confirm that there exists a compressive stress along with an associate shear stress and twisting when the anisotropic shell is subjected to axial compression. The postbuckling equilibrium path is unstable for the moderately thick cylindrical shell under axial compression and the shell structure is imperfection-sensitive.

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