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Author(s):	Schneider, Werner; Gettel, Marco
Title:
Abstract:	Im Beitrag wird gezeigt, dass eigenformaffine Imperfektionen beim Basisbeulfall Umfangsdruck ungeeignet für den numerischen Beulsicherheitsnachweis gemäß Eurocode sind. Dagegen stellen nach dem Konzept quasi-kollapsaffiner Imperfektionen gewonnene natürliche Längsvorbeulen eine geeignete Ausgangsbasis für die Entwicklung konsistenter geometrischer Ersatzimperfektionen dar. Für diese Imperfektionsform werden Amplituden angegeben, die zu den experimentell gesicherten Tragfähigkeiten nach dem klassischen Beulsicherheitsnachweis führen. Numerical buckling strength verification of cylindrical steel shells subjected to circumferential compression - A new approach. In the paper it is shown that eigenmode-affine imperfection patterns are problematic for a numerical buckling analysis according to Eurocode for cylindrical steel shells subjected to circumferential compression. In contrast, natural longitudinal imperfections derived from the concept of quasi-collapse-affine imperfections are suited to accomplish a consistent transition from the classical to the new numerical buckling strength verification technique through the determination of consistent imperfection amplitudes.
Source:	Stahlbau 80 (2011), No. 11
Page/s:	814-819
Language of Publication:	German

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