Course content

Natural phenomena such as water waves, wind and earthquakes can be modelled as irregular time series, and these are considered as input to systems that have the corresponding forces as output. On the next level these forces are input in a system in which the displacements of a structure is the output. The relationship from input to output is denoted 'transfer function', and from this follows the response spectrum. Further average frequency, average number of peaks of different magnitude, per time unit, and expected maximum response may be determined.

Learning outcome

Familiarize the students with statistically based methods for description of environmental loading and the resulting response, e.g. structural displacements.

Learning methods and activities

Lectures and exercises. The subject is integrated in the MSC program Coastal and Marine Civil Engineering and is taught in English. If there is a re-sit examination, the examination form may be changed from written to oral.

Compulsory assignments

• Exercises

Recommended previous knowledge

The subject is partly based on TBA4265 Marine Physical Environment and TKT4201 Structural Dynamics or equivalent.

Course materials

Textbook, compendium, papers.
A. Naess: An Introduction to Random Vibrations, Compendium available at Department of Civil and Transport Engineering.
Papers and notes by G. Moe distributed via It's learning.

Credit reductions