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# Dynamics of Ocean Structures

## Overview

The course will give a brief overview of different types of ocean structures that are deployed in sea for exploiting oil, gas and minerals. While fundamentals of structural dynamics are discussed, detailed mathematical modeling of ocean structures and their dynamic analysis under waves, wind and current are highlighted with special emphasis to fluid-structure interaction. Introduction to stochastic dynamics of ocean structures is also discussed with lot of tutorials and sample papers that shall intuit self-learning through the course. Focus is on the explanation of fundamental concepts as addressed to graduate students..INTENDED AUDIENCE : Any interested learners.

## Syllabus

Week 1: Introduction to offshore structures Environmental loads Structural action

Week 2: Single degree-of-freedom Equation of motion Free vibration of SDOF systems

Week 3: Damped and undamped forced vibration Damped forced vibration Response build up

Week 4: Numerical examples Numerical examples- MDOF

Week 5: Eigen value problems Orthogonality of modes Numerical methods in MDOF

Week 6: Influence coefficient method Stodla method Rayleigh method Modal response of MDOF

Week 7: Rayleigh damping Caughey damping Damping by super-positioning Duhamel integral Model super position and Truncation
Missing mass correction

Week 8: Fluid structure interaction Retrofitting and Rehabilitation Earthquake forces

Week 9: Articulated towers Fluid structure interaction application in ocean structures Response control of compliant structures (MLAT) MLAT with passive damperss

Week 10:Tension leg platforms Fluid-structure interaction Dynamic analysis for springing and ringing

Week 11:Numerical integration Dynamic analysis offshore triceratops Stochastic process

Week 12:Response spectrum Return period Fatigue damage

Thanks to the support from MathWorks, enrolled students have access to MATLAB for the duration of the course.

### Taught by

Prof. Srinivasan Chandrasekaran

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