From:
http://www.ski-consult.de/1/erneuerbare-energien/windenergieanlagen/stahlrohrturm.html
S.K.I. (Schaumann & Keindorf Ingenieurges, mbH
Schaumann & Keindorf write (in describing the services they provide customers with projects that involve wind turbines):
Buckling of shell structures
Extent of shear buckling due to torsion tubular steel towers belong to the shell structures due to their geometry and slimness. In this respect, for the towers and the stability against shell buckling must be verified with the following load cases shall be considered:
Axial pressure buckling due to axial force and bending
Circumferential pressure dents due to wind and wave loads
Extent of shear buckling due to torsion
Interaction from the above load cases
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