Simulation of geometrical imperfections and reliability estimation of cylindrical shell structures
Translated title
Simulering af geometriske imperfektioner og pålidelighedsestimering af cylindriske skalkonstruktioner
Term
4. term
Education
Publication year
2014
Submitted on
2014-06-10
Pages
80
Abstract
This thesis deals with buckling of ax- ially compressed thin cylindrical steel shells. Through state-of-the-art review, it is shown that a slightly imperfect cylin- der has a load-carrying capacity (critical buckling resistance), that is significantly reduced compared to a perfect cylinder. Therefore, three different imperfection pat- terns is analysed through the most complex of the recommended procedures in the Eu- rocode, namely the geometrically and ma- terially non-linear analysis with imperfec- tion. Furthermore, the reliability of the im- perfect models, as well as semi-empirical mathematical models from the Eurocode and DNV is estimated along with a cali- bration of partial coefficients.
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