A Study on the Hull Girder Ultimate Strength of Intact and Damaged Hull Structures

Abstract

In order to examine the effect of initial imperfections and lateral loads on the hull girder ultimate strength of intact and damaged hull structures, a series of nonlinear calculation is performed using FE analysis code, LS-DYNA. In addition, the hull girder ultimate strength of intact and damaged hull structures is calculated utilizing the simplified calculation program, which is developed by authors and based on the Smith’s method, and the reduction ratio of hull girder ultimate strength is also investigated. Furthermore, to examine the accuracy of this simplified calculation program, calculation results are compared with results obtained by FE analyses.