Analysis of the ultimate strength of corroded ships involved in collision accidents and subjected to biaxial bending
Paper i proceeding, 2018

This study presents an analysis of the effects of sudden damage, and progressive deterioration due to corrosion, on the ultimate strength of a ship which has been collided by another vessel. Finite element analyses (FEA) of collision scenarios are presented where factors are varied e.g. the vessels involved in the collision, and consider-ation of corroded ship structure elements and their material characteristics in the model. The striking ship is a coastal tanker, the struck ship is either a RoPax ship, or, a coastal oil tanker vessel. The ultimate strength analy-sis of the struck vessel accounts for the shape and size of the damage opening from the FEA. The Smith method is used to calculate the ultimate strength of intact and damaged ship structures during biaxial bending. The study shows how corroded, collision-damaged ship structures suffer from a reduction in crashworthiness and ultimate strength, how this should be considered and modelled in FEA.

Ultimate strength

Corrosion modelling

Smith method

Finite element method

Ship collision


Jonas Ringsberg

Chalmers, Mekanik och maritima vetenskaper, Marin teknik

Zhiyuan Li

Chalmers, Mekanik och maritima vetenskaper, Marin teknik

Artjoms Kuznecovs

Chalmers, Mekanik och maritima vetenskaper, Marin teknik

Erland Johnson

Chalmers, Mekanik och maritima vetenskaper, Marin teknik

Progress in Maritime Technology and Engineering (Eds C. Guedes Soares & T.A. Santos)


4th International Conference on Maritime Technology and Engineering (MARTECH 2018)
Lisbon, Portugal,


Hållbar utveckling

Innovation och entreprenörskap





Teknisk mekanik


Metallurgi och metalliska material


Grundläggande vetenskaper


C3SE (Chalmers Centre for Computational Science and Engineering)