Displacement problem maxsurf stability

Wow it really works!! How did you do that?? My new model (when I said it's resolved) is a brand new model with new size so that's why I think it's worked, but yours? It's the same one! Amazing!!

I'm going to use yours instead if I may.. Really,, thank you thank you very much!!

 

Hi Endarkwolf,
The model is yours. I just corrected it. But I have a question - is it necessary the stern to be vertical?
See the following posts:http://www.boatdesign.net/forums/de...ility-draft-trim-maxsurf-stability-55820.html
and http://www.boatdesign.net/forums/design-software/how-start-work-maxsurf-stability-55794.html
_______________________
NA Razmik Baharyan

 

Hello Rabah,

No, I made the model with only bow and hull shaped particularly. The other shape is conditional, and since I don't know the good shape for them, I just made it like that.

I'll accept any guidance to make it better..

And thanks for the post link!! It really helps!

Thank you..

 

Hi Endarkwolf,
It is called a triple-hulled vessel /trimaran/ with outlines type „Volatile seagull”. It is used at motorboats with smaller ship dimensions. It has a main displacement body in CL and two additional laterals which call "sponsons". The reference for them is the following rule - keel lines of two sponsons always are above the keel line of the main body in CL.
Major triple-hulled vessels like ferryboats and aircraft-carriers have three separate displacement bodies joint only with the Main deck.
If we shall make scaling of this model with coefficient 5 we shall receive the following motor boat dimensioned:
Loa = 4m; B = 1,2m; H = 0,75m; T = 0,36m
________________________
NA Razmik Baharyan

 

Hello again Rabah..

Oh you mean making them fully trimaran? I'm afraid I can't, as my assignment is "design one monohull ship as creatively as possible". So if I make it trimaran my professor aren't going to accept it..

Yours is a very superb design though, I hope I'll be as good as you one day haha..

 

Hi Endarkwolf,
And what you will say about this variant - see the files?
_______________________
NA Razmik Baharyan

 

Hello rabah,

Once again,, it's awesome. What the name of this type? Can I use this design as reference? I guess if it's like this my prof can still count it as single hull.

 

Hi Endarkwolf,
It in effect is a mono-hull. The additional bodies are received only for additional volume at heel because augment the righting moment, that is augment the stability.
There is no problem to use the model - I was made it for you. You can scale on what size you want.
And on your old question how I have managed to make so fast this model the answer is very simple - all over again in Rhinoceros v.4 and then I unclose the file in Maxsurf Modeler /see http://www.boatdesign.net/forums/de...odeler-ready-model-other-programs-55792.html/
________________________
NA Razmik Baharyan

 

Sorry to interfere in your conversation but my ignorance of the hydrodynamic concepts that you two are managing is huge so I wonder if a hull of the same length, breadth and depth, monocoque, would not have much less friction resistance and much less resistance by wave formation. The interference between the hull waves produced by the "tri-hull" would disappear and, probably, the power necessary to reach the same speed would be smaller.
What do you think about it?

 

Hello Rabah,,

Thank you so much, you really help me a great time.

Hello TANSL,

Yes, it would disappear. In fact making it semi trimaran and flat hull will increase the resistance. My professor and seniors still conducting a research about this topic. But since I'm still a junior I don't know that much. I'm sorry.

 

A trimaran can be good in certain cases and even necessary. But three hulls so close together can never be good.

 

Hello everyone I need some help. My project is making a model ship with maxsurf, and I encountered some problem. Whenever I start analyzing my ship it display changed displacement and other data. Here is the result..
My ship main dimension is L=116cm, b=17cm, d=13cm, t=8,112cm (it's a model ship)
Maxsurf modeller Displacement = 12268 tons
Maxsurf stabilityDisplacement = 75496 tons
My displacement is changed I don't know where i'm wrong, please help..

Thank you in advance.

 

Maxsurf Modeller

 

The software understands the input measures as meters. For e. g. 17 cm you should put in "0.17".

 

The main dimensions that you have entered, as Heimfried has already warned, are not correct. It seems that you should give them in meters.
On the other hand, the hydrostatic values that are calculated in the modeller, I don't know why, do not coincide with those calculated by the stability module. Consider only the latter.