Course content

Design in the limit state of ultimate collapse, design codes, guidelines (DnV; Norsok, Eurocode). Welding stresses in steel and aluminium structures. Effect of shape imperfections, welding stresses and soft zones on the resistance to buckling. Yield hinge theory and mechanism analysis of beams and frames. Incremetal plastic analysis. Interaction between bensding moment and axial force. Computer program for nonlinear analysis of frames and trussworks. Buckling of columns, beam-columns and franes. Buckling of plates in steel ansd lauminium subjected to uni-axial and multiple loads, including transvers pressure. Resistance of plate girders and box girders in post-buckling range. Stress analysis and buckling of stiffened shell strcutures.

Learning outcome

Obtain fundamental understanding of the governing physical efects behind buckling and plastic collapse, knowledge of theoretical methods of analysis and acquire skills in practical design of marine structures in steel and aluminium with respect to these failure modes.

Learning methods and activities

Lectures, mandatory exercises and use of computer code USFOS. Exercises and lectures are conducted in English. Portfolio assessment is the basis for the grade in the course. The portfolio includes a final written exam (85%) and exercises (15%). The results for the parts are given in %-scores, while the entire portfolio is assigned a letter grade. Postponed/repeated exams may be oral. Examination papers will be given in English only. Students are free to choose Norwegian or English for written assessments.

Compulsory assignments

• Project work
• Exercises

Recommended previous knowledge

TMR4105 Marine Technology 1, TMR4167 Marine Technology 2, TMR4247 Marine Technology 3 and TMR4170 Marine Structures BC.

Course materials

Lecture notes, exercises and text book: Ultimate load analysis of marine structures, T. H. Søreide, Tapir publishers.

Credit reductions