scholarly journals Discussion: “Creep Buckling of Thin-Walled Circular Cylindrical Shells Subject to Radial Pressure and Thermal Gradients” (Pan, Y. S., 1971, ASME J. Appl. Mech., 38, pp. 209–216)

1972 ◽  
Vol 39 (1) ◽  
pp. 313-313
Author(s):  
T. H. Lin
Keyword(s):  
Cylindrical Shells ◽  
Radial Pressure ◽  
Thermal Gradients ◽  
Creep Buckling ◽  
Circular Cylindrical Shells ◽  
Thin Walled

Creep Buckling of Thin-Walled Circular Cylindrical Shells Subject to Radial Pressure and Thermal Gradients

1971 ◽  
Vol 38 (1) ◽  
pp. 209-216 ◽  
Author(s):  
Y. S. Pan
Keyword(s):  
Circular Cylindrical Shell ◽  
Cylindrical Shells ◽  
Radial Pressure ◽  
Temperature Gradients ◽  
Time Dependent ◽  
Thermal Gradients ◽  
Numerical Examples ◽  
Circular Cylindrical Shells ◽  
Thin Walled ◽  
Inelastic Strains

A method of calculating the creep deflections and predicting the creep collapse of a thin-walled circular cylindrical shell, subject to uniform external radial pressure and arbitrary temperature gradients, is shown. This method may also be applied to investigate the behavior of a shell subject to time-dependent temperature gradients and deformations due to other inelastic causes. The set of simultaneous differential equations of equilibrium in terms of creep, thermal, and other inelastic strains is presented. Applications of this method to long cylindrical shells are illustrated by two numerical examples.

Bifurcation Buckling of Circular Cylindrical Shells Subjected to Axial Compression During Creep Deformation

1993 ◽  
Vol 115 (3) ◽  
pp. 268-274 ◽  
Author(s):  
N. Miyazaki ◽  
S. Hagihara
Keyword(s):  
Creep Deformation ◽  
Cylindrical Shells ◽  
Initial Imperfection ◽  
Experimental Investigations ◽  
The Finite Element Method ◽  
Bifurcation Buckling ◽  
Creep Buckling ◽  
Circular Cylindrical Shells ◽  
Deformation Patterns ◽  
Circumferential Waves

In the present work, analytical and experimental investigations were performed on creep buckling. Special attention was focussed on bifurcation behavior during creep deformation. The finite element method was used to analyze creep buckling of circular cylindrical shells without initial imperfection. The number of circumferential waves obtained from the analyses agrees well with those of the experiments. The present experimental investigation shows that the circumferential waves are suddenly caused near a bulge. It is also found that there is no correlation between the wavelength of the circumferential waves observed at creep buckling and that of the circumferential initial imperfection. Deformation patterns at the bifurcation creep buckling obtained from the analyses are analogous to those of the experiments. It is concluded from the analyses and the experiments that the circumferential waves observed in creep buckling experiments are due to bifurcation buckling during creep deformation.

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