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Publicações
Yang, B., Guedes Soares, C. e Wang, D-Y. (2019), “Dynamic ultimate compressive strength of simply supported rectangular plates under impact loading”, Marine Structures, Vol. 66, pp. 258-271
The dynamic ultimate compressive strength of isotropic imperfect rectangular plate with simply supported boundary conditions under intermediate-velocity impact is studied based on the non-linear finite element method (FEM). The initial imperfections were assumed following the same shapes as its first transverse vibration mode with an average level was considered in the dynamic behavior analysis. The dynamic ultimate strength of rectangular plates obtained from FEM compared very well with the results of the published literature. The influences of parameters, such as impact duration, aspect ratio, plate thickness and material yield stress were discussed to derive a reasonably accurate expression for predicting the dynamic ultimate compressive strength of rectangular plates. Results from the parametric study indicate that impact duration and aspect ratio have an important influence on the non-dimensional dynamic ultimate compressive strength of rectangular plates, while plate thickness and material yield stress have little effect. The obtained empirical formula was applied to the rectangular plates in existing ships, and the comparison of the dynamic ultimate compressive strength between the proposed formula and FE results show the applicability and good precision of the new empirical formula.
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