Finite elements

[nemo]

Hi,
does anybody out there use finite elements programmes in naval applications? If yes, which are the most suitable for that?

[SailDesign]

Nemo,
I have to admit that I don't use any. But people I have talked to that have tried to use them for marine applications all say the same thing - "It is not a problem creating the mesh, but it is really difficult to decide on the worst-case loadings."
Steve

[Dim]

Dear Nemo,

The set of programs from SRAC:
http://www.cosmosm.com/cosmosm.htm or

I can recommend page of web-site:
http://www.bodrum-bodrum.com/vorteks...l/feacodes.htm

On my sight - one of best about software for all of us.

Dim.

[EmilSB]

Hi,
I try something like that with Nemecheck and with Posseidon.
I think both are good if you know how it works. But, also I think the best softwear in this category is the software which you know best.
Emil

[dionysis]

hi EmilSB,

While I have had limited experience with finite element software, all applications have a steep learning curve. After having an opportunity to look at Nastran, Ansys and Algor finite element packages in use, I think the best value and the easiest learning curve is Algor. Be warned, you need to learn a lot to use these packages properly; they are complex and there will be steep learning curve.

Bear in mind you wll need a way to be able to compare results so you can validate them. Get a good engineering book.

Good luck, Dionysis.

[Dim]

Will not say more precisely. In any case to work with any FEA-software, it is necessary to have specialized education.
First and most important during usage FEA-software - whether is for the person understanding that happens in PC.

Dim.

[EmilSB]

Hi,
If you want to see some stuff about finite elements see this site:
http://swath.com/maritech.htm(correction:http://www.swath.com/maritech.htm)
There you will find some pictures with result of analyse with Nastran.
Emil

[Dim]

Sorry, EmilSB,

but attribution is
http://www.swath.com/maritech.htm

Dim.

[EmilSB]

Sure Dim, I never said It's my!

[Dim]

Good pictures, EmilSB.

Dim.

[EmilSB]

Dim, a saw your gallery on this forum and your 3D Models are very good and I am woner what soft for hull form, for rendering and for detail design you use?

[Dim]

My answer - at PM, EmilSB.

Well also was lucky me with number of posts!

Dim.

[Jeff]

Sure Dim, I never said It's my!

I think Dim was simply pointing out that the site doesn't work without the www because of the way they have their server set...

P.S. thanks (to both of you) for posting the images in the gallery - I really enjoy looking at them - they're great

[Dim]

Yes, Jeff and thank you for your words.

Dim.

[Thomas Ask]

I use Algor and wrote a paper on FEA analysis of hulls for the International Institute of Marine Surveyors a few months ago. I could forward you a copy of this paper if you would like.

The problem with FEA is modeling wave behavior. I used multiple surfaces on a solid model to achieve a reasonable model.