Experimental and numerical studies on the elasto-plastic buckling response of cylindrical shells with spigot support under axial compression

被引：13

作者：

Ravulapalli, V. ^{[1
]}

Raju, G. ^{[1
]}

Narayanamurthy, V. ^{[2
]}

机构：

[1] Indian Inst Technol, NDT&E Lab, Hyderabad 502285, India

[2] Res Ctr Imarat, Hyderabad 500069, India

来源：

THIN-WALLED STRUCTURES | 2023年 / 191卷

关键词：

Thin shells; Buckling; Digital Image Correlation (DIC); Imperfections; FEM; KNOCKDOWN FACTORS; STIFFENED SHELLS; IMPERFECTIONS; LOAD;

D O I：

10.1016/j.tws.2023.111095

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this work, an experimental and numerical methodology is proposed to study the elasto-plastic buckling response of thin cylindrical shells with spigot support under axial compression. A multi-3D digital image correlation system is used to measure the geometrical imperfections as well as the buckling response of the shell. Further, a coordinate measuring machine is employed to measure the edge loading imperfections of the shell. Next, interpolation methods are employed to transfer the measured imperfections to a finite element (FE) model. The effect of interference between the spigot and shell on the nonlinear buckling response of the shell is studied. The numerical results of FE models embedded with the measured edge and radial imperfections are compared with the experimental response. This study emphasizes the importance of including geometrical/loading imperfections for accurately estimating the buckling load of cylindrical shells used in launch vehicle applications.

引用

页数：12

共 49 条

[21]

Hilburger M.W., 2018, 2018 AIAA ASCE AHS A, P1697

[22]

Hilburger Mark W., 2020, Buckling of thin-walled circular cylinders

[23] Effects of imperfections of the buckling response of composite shells [J].

Hilburger, MW ;

Starnes, JH .

THIN-WALLED STRUCTURES, 2004, 42 (03) :369-397

[24] Cylinder buckling: The mountain pass as an organizing center [J].

Horak, Jiri ;

Lord, Gabriel J. ;

Peletier, Mark A. .

SIAM JOURNAL ON APPLIED MATHEMATICS, 2006, 66 (05) :1793-1824

[25]

Huhne C., 2005, Spacecraft structures, materials and mechanical testing 2005, V581

[26]

Koiter W.T., 1963, P KONNINKLIJKE NEDER, V66, P265

[27]

Koiter WT, 1945, THESIS DELFT U TECHN

[28] Experimental investigation of buckling of dented cylindrical shells under axial compression [J].

Krasovsky, V. ;

Evkin, A. .

THIN-WALLED STRUCTURES, 2021, 164

[29] Buckling behaviour of FRP strengthened cylindrical metallic shells with cut-outs [J].

Krishna, G. Vamsi ;

Narayanamurthy, V. ;

Viswanath, C. .

COMPOSITE STRUCTURES, 2022, 300

[30] Buckling and free vibration study of variable and constant-stiffness cylindrical shells [J].

Labans, Edgars ;

Bisagni, Chiara .

COMPOSITE STRUCTURES, 2019, 210 :446-457

← 1 2 3 4 5 →