Shear resistance of longitudinally stiffened panels — Part 2: Numerical parametric study |
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Authors: | Luka Pavlov?i? Darko Beg |
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Affiliation: | a Faculty of Civil and Geodetic Engineering, University of Ljubljana, Jamova 2, 1000 Ljubljana, Slovenia b Institute of Structural Design, University of Stuttgart, Pfaffenwaldring 7, 70569 Stuttgart, Germany |
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Abstract: | This paper presents the FE analysis of the influence of different parameters on the shear resistance of panels with different arrangements of longitudinal stiffeners. The studied parameters were the stiffener bending stiffness, the panel aspect ratio, the stiffener position, the web slenderness and the flange rigidity. Longitudinal stiffeners of trapezoidal shape were compared to open T-stiffeners. The former proved to be more efficient, since a larger panel resistance is achieved, for which in addition a smaller stiffness of trapezoidal stiffeners is needed. Different features of the new Eurocode rules were verified against the FEA results as well. Three different procedures for the determination of panel slenderness were tested and the reduction of stiffener bending stiffness, prescribed due to a better correlation with tests on open stiffeners, was verified for both closed and open stiffeners. The influence of bending moment was also considered and the verification of shear and bending interaction was discussed. Finally, the flange contribution to shear resistance was critically analysed. |
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Keywords: | Trapezoidal longitudinal stiffeners T-stiffeners Parametric study FEA Stiffener stiffness Shear and bending interaction Flange resistance Eurocode rules |
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