1. Edit this text for your title
Planer for MEK 4450
Marine operasjoner
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Presenter name, location, date etc.
Kværner ASA, June 2011

2. Mathematical models Motivation Catenary theory Morisson formula
Linear harmonic oscillator

3. Why hand calculations?
To provide input to more complex numerical analyses.
To provide quick estimates in an early project phase.
To clarify if a complex numerical models gives reasonable results
To gain increased physical in the involved phenomenon's

4. Structural analysis
Beams.
Welds.
Bolts and nuts
More complex: FEM

7. Catenary shape

8. Typical ”offshore catenaries”

9. Catenary formulas. Gitt R

10. Using blackboard Chain lay- an example
Towing object with constant speed
Towing object, acceleration dominated
Morissons law
Dynamic model

11. Torpedo Anchor Installation

12. Deep Penetrating Anchor
Situation before dropping
Typical anchor behaviour : anchor chain do not interfere with anchor stability or velocity