ABSTRACT
This study focuses on the prediction of the residual strength of dented steel stiffened cylinders under combined axial compression and radial pressure. Two types stiffened cylinders, namely, ring- and stringer-stiffened cylinders are investigated, which are common marine structural elements used in submarines and various types of floating offshore structures. The finite element modeling of stiffened cylinders is performed using a commercial software package ABAQUS after validating against corresponding test results. Next, rigorous parametric studies were carried out by changing the design variables. Based on the parametric study results, simple design equations to predict the extent of local denting damage and the residual strength of the damaged stiffened cylinders under combined axial compression and radial pressure are derived. The accuracy of the derived formulations is compared with available test results and numerical analysis results, showing a good agreement.
