Wrinkling prediction of cylindrical and conical inflated cantilever beams under torsion and bending

The combined load case of bending and torsion of a cantilever inflated beam is a load case that has not been studied extensively. When a series of inflated beams is placed parallel to each other as can be the case for an inflatable wing, each beam experiences a combination of torque and bending. A t...

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Bibliographic Details
Published in:Thin-walled structures 2006-02, Vol.44 (2), p.211-215
Main Author: Veldman, S.L.
Format: Article
Language:English
Subjects:
Bending
Cantilever beams
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Physics
Solid mechanics
Static elasticity (thermoelasticity...)
Structural and continuum mechanics
Torsion
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Summary:The combined load case of bending and torsion of a cantilever inflated beam is a load case that has not been studied extensively. When a series of inflated beams is placed parallel to each other as can be the case for an inflatable wing, each beam experiences a combination of torque and bending. A theoretical model already exist for such a load case but it is limited to membrane like materials. This paper deals with beams made of materials that need to be treated like a shell. It requires a modification for the wrinkling load due to solely bending and solely torsion. Semi-empirical expressions for both cases are presented for both cylindrical and conical shaped beams.
ISSN:0263-8231
1879-3223
DOI:10.1016/j.tws.2006.01.003