Directional Effects of Load Deviations on the Buckling of Cylindrical Shells in Experiment and Design

DS 119: Proceedings of the 33rd Symposium Design for X (DFX2022)

Year: 2022
Editor: Dieter Krause, Kristin Paetzold, Sandro Wartzack
Author: Stefan Panek, Tobias S. Hartwich, Dieter Krause
Series: DfX
Institution: Institute of Product Development and Mechanical Engineering Design (PKT), Hamburg University of Technology (TUHH), Germany
Page(s): 10
DOI number: 10.35199/dfx2022.03


Exploiting the lightweight design potential of thin-walled shells requires precise buckling load predictions. Due to numerous scattering parameters affecting the buckling load, probabilistic approaches are often used to model these effects. However, developing a stochastic model requires test data while making some simplifying assumptions. In this contribution, the influence of different load deviation types on the buckling load of axially loaded cylindrical CFRP shells is investigated. It is shown that effects are direction-dependent and vary between types. The extent to which probabilistic approaches account for such effects is discussed. Finally, the results are transferred to other load cases and the importance of considering directional effects in design and testing is highlighted.

Keywords: Buckling, Cylindrical Shells, Load Imperfections, Combined Loading, Probabilistic Design


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