Numerical assessment of ultimate strength of severe corroded stiﬀened plates
The objective of this work is to investigate numerically (using the non-linear FEM and the approach stipulated by the Common Structural Rules) the severe nonuniform corrosion degradation eﬀect on the ultimate strength of stiﬀened plates and compare the results to the already published experimental works. Diﬀerent factors governing structural behavior of corroded stiﬀened plates are investigated, such as corrosion degradation level, material properties, initial imperfections and boundary conditions. The numerically estimated ultimate strength demonstrated to be very close to those observed during the experimental test. A sensitivity analysis with respect to the most important governing parameters of the numerical estimation of the ultimate strength is also performed and several conclusions are derived. The applied calculation procedure avoids using of a pitted surface of the corroded plates and instead of that an equivalent thickness is applying leading to a relatively fast and practical approach for ultimate trength assessment of corroded stiﬀened plates.
Krzysztof Wołoszyk, Maciej Kahsin, Yordan Garbatov. (2018). Numerical assessment of ultimate strength of severe corroded stiﬀened plates, 168, 346-354. https://doi.org/10.1016/j.engstruct.2018.04.085
Pełna treść dostępna od 2020-05-02
wyświetlono 33 razy