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DYNAMIC STABILITY OF A COMPLETELY FREE CIRCULAR CYLINDRICAL SHELL SUBJECTED TO A FOLLOWER FORCE

✍ Scribed by S.-H. PARK; J.-H. KIM

Publisher: Elsevier Science
Year: 2000
Tongue: English
Weight: 262 KB
Volume: 231
Category: Article
ISSN: 0022-460X
DOI: 10.1006/jsvi.1999.2319

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✦ Synopsis

The dynamic stability of a completely free isotropic circular cylindrical shell under a follower force is investigated. First order shear deformation is included and the axial stress is assumed to be uniformly distributed through the thickness.

A "nite element model of the shell is formulated using a ring element in the circumferential direction and a Lagrangian element in the longitudinal direction. The dynamic stability is studied for various dimensionless lengths and thicknesses. The numerical results for the shells are compared with those of a beam model having equivalent dimensions. The analysis shows that the Rayleigh mode and the Love mode have an e!ect on instability and that the shell structure can be analyzed with a beam model within only a certain range of shell dimensions.

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