MULTI-GRID FINITE ELEMENTS IN CALCULATIONS OF MULTILAYER OVAL CYLINDRICAL SHELLS

2019 ◽  
Vol 20 (2) ◽  
pp. 174-182
Author(s):  
N. V. Pustovoi ◽  
◽  
A. N. Grishanov ◽  
А. D. Matveev ◽  
◽  
...  
1962 ◽  
Vol 29 (11) ◽  
pp. 1347-1357 ◽  
Author(s):  
WILLIAM P. VAFAKOS ◽  
FRANK ROMANO ◽  
JOSEPH KEMPNER

1968 ◽  
Vol 35 (1) ◽  
pp. 66-72 ◽  
Author(s):  
J. W. Hutchinson

Buckling and initial postbuckling behavior is determined for thin, elastic cylindrical shells of elliptical cross section. This study complements the buckling and advanced postbuckling calculations reported by Kempner and Chen on a similar class of shells. The initial postbuckling analysis indicates that, like compressed circular cylinders, the oval cylinders will be highly sensitive to small geometrical imperfections and may buckle at loads well below the predictions for the perfect shell. On the other hand, buckling will not necessarily result in complete collapse. A series of simple tests has been performed which provide qualitative verification of the major features of the theory.


1986 ◽  
Vol 53 (3) ◽  
pp. 675-680 ◽  
Author(s):  
David Hui ◽  
I. H. Y. Du

This paper examines the effects of axial geometric imperfections on the fundamental vibration frequencies of cross-ply simply-supported oval cylindrical shells. It is found that the presence of such imperfection with small amplitudes may significantly raise or lower the fundamental frequencies, depending on the wave numbers of the imperfection and vibration mode. The effects of oval eccentricity, bending-stretching coupling of the material, the reduced-Batdorf parameter and Young’s moduli ratio are examined. It appears that the present problem has not been examined, even in the simplified case of oval cylindrical shells made of isotropic-homogeneous material.


AIAA Journal ◽  
1976 ◽  
Vol 14 (9) ◽  
pp. 1235-1240 ◽  
Author(s):  
Y. N. Chen ◽  
Joseph Kempner

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