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Stress and buckling analysis of a double-bubble tank structure (1972)

Robinson, J. C. ; Dutton, J. H.

In: CASI

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Publication Date: 2016-06-07

Description: An analytical study of a two-lobed circular arc pressure vessel (double-bubble tank) with a local perturbation from the cylindrical shape was made. It can be concluded that NASTRAN provides a good linear buckling analysis capability for structures that cannot be handled by other analysis techniques. However, solutions are relatively expensive from a computational standpoint. Two worthwhile additions to the NASTRAN program would be the inclusion of a new beam element that adequately represents the shear transfer when modeling stiffeners on a shell and the capability, in a rigid format, to keep certain prescribed loads constant during the eigenvalue extraction process.

Keywords: STRUCTURAL MECHANICS

Type: NASTRAN: Users' Experiences; p 53-71

Format: application/pdf

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