Analytical assessment of the axisymmetric snap-through behaviour of FG_CNTRC spherical shells under uniform external pressure incorporating the CNTs agglomeration effects

2021 ◽  
Vol 136 (7) ◽  
Author(s):  
Mohammad Amin Shahmohammadi ◽  
Sayed Mohamad Mirfatah ◽  
Alireza Houshmand-Sarvestani ◽  
Hamzeh Salehipour
Keyword(s):  
External Pressure ◽  
Spherical Shells ◽  
Uniform External Pressure ◽  
Agglomeration Effects ◽  
Analytical Assessment

Instability of Cup-Cylinder Compound Shell Under Uniform External Pressure

1995 ◽  
Vol 39 (02) ◽  
pp. 160-165
Author(s):  
Raisuddin Khan ◽  
Wahhaj Uddin
Keyword(s):  
Critical Pressure ◽  
Nonlinear Differential Equations ◽  
External Pressure ◽  
Shells Of Revolution ◽  
Membrane Stress ◽  
Spherical Shells ◽  
Uniform External Pressure ◽  
Shell Buckling ◽  
Compound Shell ◽  
Method Of Solution

Instability of compound cup-end cylindrical shells under uniform external pressure is studied. Nonlinear differential equations governing the large axisymmetric deformations of shells of revolution which ensure the unique states of lowest potential energy of the shells under a given pressure are solved. The method of solution is multisegment integration, developed by Kalnins and Lestingi, for predicting the mode of buckling and the critical pressure of these compound shells. Results show that, when simple cylindrical and spherical shells which develop the same membrane stress under pressure are used as a compound cup-end cylindrical shell, buckling takes place in the cylinder portion, near the cup-cylinder junction, at loads a few times higher than the buckling load of conventional dome-cylinder shells.

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