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Initial Postbuckling Analysis of Elastoplastic Thin-Shear StructuresThe design of thin shell structures with respect to elastoplastic buckling requires an extended analysis of the influence of initial imperfections. For conservative design, the most critical defect should be assumed with the maximum allowable magnitude. This defect is closely related to the initial postbuckling behavior. An algorithm is given for the quasi-static analysis of the postbuckling behavior of structures that exhibit multiple buckling points. the algorithm based upon an energy criterion allows the computation of the critical perturbation which will be employed for the definition of the critical defect. For computational efficiency, the algorithm uses the reduced basis technique with automatic update of the modal basis. The method is applied to the axisymmetric buckling of cylindrical shells under axial compression, and conclusions are given for future research.
Document ID
Document Type
Conference Paper
E G Carnoy
(Novatome Le Pessis-Robinson, France)
G Panosyan
(Novatome Le Pessis-Robinson, France)
Date Acquired
August 12, 2013
Publication Date
October 22, 1984
Publication Information
Publication: Research in Structures and Dynamics - 1984
Publisher: National Aeronautics and Space Administration
Subject Category
Structural Mechanics
Report/Patent Number
Meeting Information
Meeting: Research in Structures and Dynamics Symposium
Location: Washington, DC
Country: US
Start Date: October 22, 1984
End Date: October 25, 1984
Sponsors: Langley Research Center, George Washington University
Accession Number
Distribution Limits
Portions of document may include copyright protected material.
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