<p>The dynamic capacity is totally different from quasi-static capacity of ship structural components, although most ultimate strength analyses at present by researchers are performed under quasi-static conditions. To investigate the dynamic ultimate strength characteristics, the dynamic ultimate strength analyses of stiffened plates subjected to impact load were studied based on a 3-D nonlinear explicit finite element model (FEM) in this paper. The impact load in the present work is characterized as a half-sine function, and other different impact loads are also adopted to compare the dynamic response and dynamic ultimate strength. A series of nonlinear finite element analyses are carried out using Budiansky-Roth(B-R) criterion. The influence of impact duration, model extent, initial imperfection, geometric dimensions, and material properties on the dynamic ultimate strength of stiffened plates are discussed. In addition, the ultimate strength of stiffened plates under uniaxial compression combined with the lateral pressure was also calculated, which shows lateral pressure has negligible effect on the dynamic ultimate strength of stiffened plates. Other important conclusions can be obtained from this paper, which are useful insights for the development in the theory of ultimate strength of ship structures and lay a good foundation for the study of dynamic ultimate strength in the future.</p>

Dynamic Ultimate Strength Characteristics of Stiffened Plates Subjected to the In-Plane Impact Load and Lateral Pressure

Paper Proceedings: https://asmedigitalcollection.asme.org/OMAE/OMAE2021/volume/85116

OMAE 2021

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