When considering the ultimate strength of hull girders, reference is usually made to pure vertical bending and collapse analysis is carried out by progressively increasing the curvature of the beam. However, reality is much more complex. In this paper the effect of shear stress distribution on the hull girder structural components is analyzed. At first, finite element models simulating a suitable length of the hull girder are considered. Later on, smaller models of stiffened panels are extracted from hull girder models and analyzed. Shear stress distributions due to both shear forces and torsion moments acting on the hull girder appear to influence the ultimate strength.
Effect of shear stresses onto the hull girder ultimate strength of a containership
GAIOTTI, MARCO;GRASSO, NICOLA;RIZZO, CESARE MARIO
2015-01-01
Abstract
When considering the ultimate strength of hull girders, reference is usually made to pure vertical bending and collapse analysis is carried out by progressively increasing the curvature of the beam. However, reality is much more complex. In this paper the effect of shear stress distribution on the hull girder structural components is analyzed. At first, finite element models simulating a suitable length of the hull girder are considered. Later on, smaller models of stiffened panels are extracted from hull girder models and analyzed. Shear stress distributions due to both shear forces and torsion moments acting on the hull girder appear to influence the ultimate strength.
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