Course code: mt832

Course name: structural design and analysis of maritime objects 3

This concerns a

ECTS credit points: 3

Faculty of Mechanical Engineering and Marine Technology

Section of Ship Structures

Lecturer(s): Vink, ir. J.H.

Tel.:  015 - 27 85923

Catalog data:

Loading, short term, long term, material aspects, corrosion, fracture mechanics, brittle fracture, crack initiation, crack growth, fatigue, reliability, noise, vibration, excitation, acceptance criteria

Course year:

3

Course language:

Dutch

In case of Dutch: Please contact the lecturer about an English alternative, whenever needed.

Semester:

1A

Hours per week:

4 (lectures)

Other hours:

56

Assessment:

Written exam

Assessment period:

1A / 2A /

(see academic calendar)

Prerequisites (course codes):

Mt803 Structural Design and Analysis of Maritime Objects 2

Mt519 Ship motions and Manoeuvring 1

Wi2013 Kansrekening en Statistiek

Wb1113mt Dynamics A

Follow up (course codes):

Mtp304: Structural Design and Analysis of Maritime Objects 4 (Project 3-3)

Mt835 Hydro-Structural Subjects

Mt814 Ship Vibration and Noise

Mt815 Ship Construction and Strength: Special Subjects

Mt835 Dynamics 2

Detailed description of topics:

-      Due to the variable nature of the loads on maritime objects, the structural strength and stiffness has to be based upon probability considerations.

-      The nature of the loading on ship and offshore structures is considered in view of frequency, intensity and its distribution in time and space.

-      Characteristics of the main structural material for ships, i.e. steel, are described and the methods to influence them. Fabrication methods (in particular welding) have a major impact on material properties, and consequently on the safety of the structure.

-      In order to restrict the degradation of structural strength, the aspects of corrosion and corrosion prevention are dealt with.

-      As fatigue, crack growth and brittle fracture play are important failure modes for ship structures, these aspects are dealt with both in a fundamental way and using standard design procedures. The implementations of these aspects for the structural design of ships and their details are taught.

-      The basic theory of reliability analysis is introduced and explained with some examples.

-      In order to be able to integrate noise and vibration considerations in the design of maritime objects, vibration and noise are dealt with in view of their sources, the main transmission routes, the methods to reduce their effects and acceptance levels.

Course material:

Reader:

Construeren en sterkte van maritieme objecten 3. B. Boon. J.H. Vink, S. Hylarides, 2003

References from literature:

·       Strength of ships, J.R. Paulling, in Principles of Naval Architecture, E.V. Lewis (ed.),2^nd ed.

·       Design of Ships’ Structures, D.W. Chalmers, 1993

·       Ship Structural Design, O.F. Hughes, 1988

·       Basic Ship Theory, K.J. Rawson, part 1, 4^th ed.

·       Ship Design and Construction, R. Taggert (ed.), 1980

·       Load and Global Response of Ships, J.J. Jensen

·       Noise Control in Ships, J.W.E. Pettersen (ed.), J.F. Storm (ed.), 1975

·       Noise, Vibration and Shock on Board Ships, 16tn WEGEMT Graduate School, Genoa, 1992

Remarks assessment, entry requirements, etc.:

Written exam.

Optional exercises.

Learning goals:

The student must be able to:

1. Understand and use the short and long term wave loads and their distribution

2. Evaluate the application aspects of different types of steel and aluminum as ship construction material.

3. Understand the material aspects of welding.

4. Understand the aspects of corrosion and corrosion prevention for ship structures.

5. Understand the principles of fracture mechanics and its importance for the strength and reliability of ship structures.

6. Understand crack initiation, crack growth of welded steel constructions and the way in which the risk of failure is assessed.

7. Understand the fatigue behavior of welded steel constructions, understand and be able to apply the current fatigue life assessment procedures.

8. Understand and apply safety considerations in structural design and understand the importance and potential of probabilistic structural design

9. Understand noise and vibration problems for ships; assess the main sources and countermeasures. 

Computer use:

Laboratory project(s):

Design content:

The course addresses the structural design of ships and offshore objects, the evaluation of their strength and to assess the acceptability of the responses.

Percentage of design:  75%