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Boundary conditions for a floating concrete platform

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cango85

Civil/Environmental
Joined
Dec 22, 2020
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2
Location
RU
Hi everyone,

This is my first thread ever. It feels nice to be a part of tnis forum.

My question is what would the boundary conditions be for FE analysis of a concrete platform for wave or stillwater loading?

I am currently working in a GBS project as a structural engineer. I have been doing the concrete design using the FE output. I havent been involved in the analysis task so i have some trouble understanding how a floating object resting on a fluid can be analysed.

Ship hull bending moment calculation is pretty straight forward. Basically, solving a distributed load on a simple beam. So boundary conditions would be simply restraints at both ends restraining 3 degrees of freedom to have isostatic system.

But how should you restraint a 2d planar object on fluid? Restraining 6 degrees of freedom in total?

Any book reference about structural analysis of floating objects would be appreciated.

Thanks
 
Not really. But thanks anyway.
 
Gravitional weight down, resisting buoyancy pressure distributions are up. After that add F= m A. Where accelerations are derived from vessel displacement over time as forced by your wave equation, from which forces and buoyancy distributions can be obtained for structural analysis.

 
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