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#13611 - 10/13/07 12:26 AM Fluid-Structure Interaction?
Laleh Offline
Member

Registered: 10/12/07
Posts: 3
Loc: Ahvaz, IR
Hi
Has CAESAR the ability to consider FSI(Fluid-Structure Interaction) in pipe elements?

Thanks
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Laleh Fatahi

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#13613 - 10/13/07 01:02 AM Re: Fluid-Structure Interaction? [Re: Laleh]
anindya stress Offline
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Registered: 04/12/04
Posts: 493
Loc: London, UK
No.
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#13632 - 10/15/07 08:27 AM Re: Fluid-Structure Interaction? [Re: Laleh]
Dave Diehl Offline
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Registered: 12/14/99
Posts: 2382
Loc: Houston, TX, USA
I would say it depends on your definition of Fluid Structure Interaction and also the extent of automation you may expect from CAESAR II.

If the load can be represented as a harmonic point load or even a time history transient, then I think a simple "No" is too simple.
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#13633 - 10/15/07 08:42 AM Re: Fluid-Structure Interaction? [Re: Dave Diehl]
John C. Luf Offline
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Registered: 03/25/02
Posts: 1110
Loc: U.S.A.
Fluid Structure Interaction involves the sciences of unsteady fluids as well as structural analysis.

In essence "Water Hammer" is influenced by the rigidity of the conduit that it occurs in. The conduits rigidity is not solely the pressure boundary itself, but "how" the conduit is constrained in space. The more rigid the conduit the faster sound travels within the fluid the greater the water hammer effect.

Thus the merge of two completely different applied sciences. Not for the timid or un-knowledgeable... to ask this particular question in a forum for a piece of software that is involved only in structural analysis of piping systems indicates that you are out of your depth of knowledge perhaps.
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John C. Luf

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#14072 - 11/01/07 05:11 AM Re: Fluid-Structure Interaction? [Re: John C. Luf]
Laleh Offline
Member

Registered: 10/12/07
Posts: 3
Loc: Ahvaz, IR
OK,any way... thanks
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Laleh Fatahi

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